Switch to referenceful lock holder for Abseil compatibility

PiperOrigin-RevId: 831156684
Change-Id: I8a8b017ec2fc318a65f57e04428c030c707ee682

.github/ISSUE_TEMPLATE/00-bug_report.md

@@ -1,43 +0,0 @@
----
-name: Bug report
-about: Create a report to help us improve
-title: ''
-labels: 'bug'
-assignees: ''
----
-
-**Describe the bug**
-
-Include a clear and concise description of what the problem is, including what
-you expected to happen, and what actually happened.
-
-**Steps to reproduce the bug**
-
-It's important that we are able to reproduce the problem that you are
-experiencing. Please provide all code and relevant steps to reproduce the
-problem, including your `BUILD`/`CMakeLists.txt` file and build commands. Links
-to a GitHub branch or [godbolt.org](https://godbolt.org/) that demonstrate the
-problem are also helpful.
-
-**Does the bug persist in the most recent commit?**
-
-We recommend using the latest commit in the master branch in your projects.
-
-**What operating system and version are you using?**
-
-If you are using a Linux distribution please include the name and version of the
-distribution as well.
-
-**What compiler and version are you using?**
-
-Please include the output of `gcc -v` or `clang -v`, or the equivalent for your
-compiler.
-
-**What build system are you using?**
-
-Please include the output of `bazel --version` or `cmake --version`, or the
-equivalent for your build system.
-
-**Additional context**
-
-Add any other context about the problem here.

.github/ISSUE_TEMPLATE/00-bug_report.yml

@@ -0,0 +1,53 @@
+name: Bug Report
+description: Let us know that something does not work as expected.
+title: "[Bug]: Please title this bug report"
+body:
+  - type: textarea
+    id: what-happened
+    attributes:
+      label: Describe the issue
+      description: What happened, and what did you expect to happen?
+    validations:
+      required: true
+  - type: textarea
+    id: steps
+    attributes:
+      label: Steps to reproduce the problem
+      description: It is important that we are able to reproduce the problem that you are experiencing. Please provide all code and relevant steps to reproduce the problem, including your `BUILD`/`CMakeLists.txt` file and build commands. Links to a GitHub branch or [godbolt.org](https://godbolt.org/) that demonstrate the problem are also helpful.
+    validations:
+      required: true
+  - type: textarea
+    id: version
+    attributes:
+      label: What version of GoogleTest are you using?
+      description: Please include the output of `git rev-parse HEAD` or the GoogleTest release version number that you are using.
+    validations:
+      required: true
+  - type: textarea
+    id: os
+    attributes:
+      label: What operating system and version are you using?
+      description: If you are using a Linux distribution please include the name and version of the distribution as well.
+    validations:
+      required: true
+  - type: textarea
+    id: compiler
+    attributes:
+      label: What compiler and version are you using?
+      description: Please include the output of `gcc -v` or `clang -v`, or the equivalent for your compiler.
+    validations:
+      required: true
+  - type: textarea
+    id: buildsystem
+    attributes:
+      label: What build system are you using?
+      description: Please include the output of `bazel --version` or `cmake --version`, or the equivalent for your build system.
+    validations:
+      required: true
+  - type: textarea
+    id: additional
+    attributes:
+      label: Additional context
+      description: Add any other context about the problem here.
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/10-feature_request.md

@@ -1,24 +0,0 @@
----
-name: Feature request
-about: Propose a new feature
-title: ''
-labels: 'enhancement'
-assignees: ''
----
-
-**Does the feature exist in the most recent commit?**
-
-We recommend using the latest commit from GitHub in your projects.
-
-**Why do we need this feature?**
-
-Ideally, explain why a combination of existing features cannot be used instead.
-
-**Describe the proposal**
-
-Include a detailed description of the feature, with usage examples.
-
-**Is the feature specific to an operating system, compiler, or build system version?**
-
-If it is, please specify which versions.
-

.github/ISSUE_TEMPLATE/10-feature_request.yml

@@ -0,0 +1,33 @@
+name: Feature request
+description: Propose a new feature.
+title: "[FR]: Please title this feature request"
+labels: "enhancement"
+body:
+  - type: textarea
+    id: version
+    attributes:
+      label: Does the feature exist in the most recent commit?
+      description: We recommend using the latest commit from GitHub in your projects.
+    validations:
+      required: true
+  - type: textarea
+    id: why
+    attributes:
+      label: Why do we need this feature?
+      description: Ideally, explain why a combination of existing features cannot be used instead.
+    validations:
+      required: true
+  - type: textarea
+    id: proposal
+    attributes:
+      label: Describe the proposal.
+      description: Include a detailed description of the feature, with usage examples.
+    validations:
+      required: true
+  - type: textarea
+    id: platform
+    attributes:
+      label: Is the feature specific to an operating system, compiler, or build system version?
+      description: If it is, please specify which versions.
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/config.yml

@@ -1 +1,5 @@
 blank_issues_enabled: false
+contact_links:
+    - name: Get Help
+      url: https://github.com/google/googletest/discussions
+      about: Please ask and answer questions here.

.github/workflows/gtest-ci.yml

@@ -1,40 +0,0 @@
-name: ci
-
-on:
-  push:
-  pull_request:
-
-jobs:
-  Linux:
-    runs-on: ubuntu-latest
-    steps:
-
-    - uses: actions/checkout@v2
-      with:
-        fetch-depth: 0
-
-    - name: Tests
-      run: bazel test --test_output=errors //...
-
-  MacOs:
-    runs-on: macos-latest
-    steps:
-
-    - uses: actions/checkout@v2
-      with:
-        fetch-depth: 0
-
-    - name: Tests
-      run: bazel test --test_output=errors //...
-
-
-  Windows:
-    runs-on: windows-latest
-    steps:
-
-    - uses: actions/checkout@v2
-      with:
-        fetch-depth: 0
-
-    - name: Tests
-      run: bazel test --test_output=errors //...

.gitignore

@@ -8,6 +8,7 @@ bazel-genfiles
 bazel-googletest
 bazel-out
 bazel-testlogs
+MODULE.bazel.lock
 # python
 *.pyc
 
@@ -24,6 +25,10 @@ Win32-Release/
 x64-Debug/
 x64-Release/
 
+# VSCode files
+.cache/
+cmake-variants.yaml
+
 # Ignore autoconf / automake files
 Makefile.in
 aclocal.m4

BUILD.bazel

@@ -30,6 +30,8 @@
 #
 #   Bazel Build for Google C++ Testing Framework(Google Test)
 
+load("@rules_cc//cc:defs.bzl", "cc_library", "cc_test")
+
 package(default_visibility = ["//visibility:public"])
 
 licenses(["notice"])
@@ -56,6 +58,12 @@ config_setting(
     constraint_values = ["@platforms//os:openbsd"],
 )
 
+# NOTE: Fuchsia is not an officially supported platform.
+config_setting(
+    name = "fuchsia",
+    constraint_values = ["@platforms//os:fuchsia"],
+)
+
 config_setting(
     name = "msvc_compiler",
     flag_values = {
@@ -77,6 +85,10 @@ cc_library(
 )
 
 # Google Test including Google Mock
+
+# For an actual test, use `gtest` and also `gtest_main` if you depend on gtest's
+# main(). For a library, use `gtest_for_library` instead if the library can be
+# testonly.
 cc_library(
     name = "gtest",
     srcs = glob(
@@ -132,23 +144,41 @@ cc_library(
     }),
     deps = select({
         ":has_absl": [
-            "@com_google_absl//absl/debugging:failure_signal_handler",
-            "@com_google_absl//absl/debugging:stacktrace",
-            "@com_google_absl//absl/debugging:symbolize",
-            "@com_google_absl//absl/flags:flag",
-            "@com_google_absl//absl/flags:parse",
-            "@com_google_absl//absl/flags:reflection",
-            "@com_google_absl//absl/flags:usage",
-            "@com_google_absl//absl/strings",
-            "@com_google_absl//absl/types:any",
-            "@com_google_absl//absl/types:optional",
-            "@com_google_absl//absl/types:variant",
-            "@com_googlesource_code_re2//:re2",
+            "@abseil-cpp//absl/container:flat_hash_set",
+            "@abseil-cpp//absl/debugging:failure_signal_handler",
+            "@abseil-cpp//absl/debugging:stacktrace",
+            "@abseil-cpp//absl/debugging:symbolize",
+            "@abseil-cpp//absl/flags:flag",
+            "@abseil-cpp//absl/flags:parse",
+            "@abseil-cpp//absl/flags:reflection",
+            "@abseil-cpp//absl/flags:usage",
+            "@abseil-cpp//absl/strings",
+            "@re2",
+        ],
+        "//conditions:default": [],
+    }) + select({
+        # `gtest-death-test.cc` has `EXPECT_DEATH` that spawns a process,
+        # expects it to crash and inspects its logs with the given matcher,
+        # so that's why these libraries are needed.
+        # Otherwise, builds targeting Fuchsia would fail to compile.
+        ":fuchsia": [
+            "@fuchsia_sdk//pkg/fdio",
+            "@fuchsia_sdk//pkg/zx",
         ],
         "//conditions:default": [],
     }),
 )
 
+# `gtest`, but testonly. See guidance on `gtest` for when to use this.
+alias(
+    name = "gtest_for_library",
+    testonly = True,
+    actual = ":gtest",
+)
+
+# Implements main() for tests using gtest. Prefer to depend on `gtest` as well
+# to ensure compliance with the layering_check Bazel feature where only the
+# direct hdrs values are available.
 cc_library(
     name = "gtest_main",
     srcs = ["googlemock/src/gmock_main.cc"],

CMakeLists.txt

@@ -1,18 +1,10 @@
 # Note: CMake support is community-based. The maintainers do not use CMake
 # internally.
 
-cmake_minimum_required(VERSION 3.5)
-
-if (POLICY CMP0048)
-  cmake_policy(SET CMP0048 NEW)
-endif (POLICY CMP0048)
-
-if (POLICY CMP0077)
-  cmake_policy(SET CMP0077 NEW)
-endif (POLICY CMP0077)
+cmake_minimum_required(VERSION 3.16)
 
 project(googletest-distribution)
-set(GOOGLETEST_VERSION 1.11.0)
+set(GOOGLETEST_VERSION 1.16.0)
 
 if(NOT CYGWIN AND NOT MSYS AND NOT ${CMAKE_SYSTEM_NAME} STREQUAL QNX)
   set(CMAKE_CXX_EXTENSIONS OFF)
@@ -23,9 +15,19 @@ enable_testing()
 include(CMakeDependentOption)
 include(GNUInstallDirs)
 
-#Note that googlemock target already builds googletest
+# Note that googlemock target already builds googletest.
 option(BUILD_GMOCK "Builds the googlemock subproject" ON)
 option(INSTALL_GTEST "Enable installation of googletest. (Projects embedding googletest may want to turn this OFF.)" ON)
+option(GTEST_HAS_ABSL "Use Abseil and RE2. Requires Abseil and RE2 to be separately added to the build." OFF)
+
+if(GTEST_HAS_ABSL)
+  if(NOT TARGET absl::base)
+    find_package(absl REQUIRED)
+  endif()
+  if(NOT TARGET re2::re2)
+    find_package(re2 REQUIRED)
+  endif()
+endif()
 
 if(BUILD_GMOCK)
   add_subdirectory( googlemock )

CONTRIBUTING.md

@@ -47,11 +47,11 @@ PR is acceptable as an alternative.
 ## The Google Test and Google Mock Communities
 
 The Google Test community exists primarily through the
-[discussion group](http://groups.google.com/group/googletestframework) and the
+[discussion group](https://groups.google.com/group/googletestframework) and the
 GitHub repository. Likewise, the Google Mock community exists primarily through
-their own [discussion group](http://groups.google.com/group/googlemock). You are
-definitely encouraged to contribute to the discussion and you can also help us
-to keep the effectiveness of the group high by following and promoting the
+their own [discussion group](https://groups.google.com/group/googlemock). You
+are definitely encouraged to contribute to the discussion and you can also help
+us to keep the effectiveness of the group high by following and promoting the
 guidelines listed here.
 
 ### Please Be Friendly
@@ -80,15 +80,15 @@ fairly rigid coding style, as defined by the
 [google-styleguide](https://github.com/google/styleguide) project. All patches
 will be expected to conform to the style outlined
 [here](https://google.github.io/styleguide/cppguide.html). Use
-[.clang-format](https://github.com/google/googletest/blob/master/.clang-format)
-to check your formatting.
+[.clang-format](https://github.com/google/googletest/blob/main/.clang-format) to
+check your formatting.
 
 ## Requirements for Contributors
 
 If you plan to contribute a patch, you need to build Google Test, Google Mock,
 and their own tests from a git checkout, which has further requirements:
 
-*   [Python](https://www.python.org/) v2.3 or newer (for running some of the
+*   [Python](https://www.python.org/) v3.6 or newer (for running some of the
     tests and re-generating certain source files from templates)
 *   [CMake](https://cmake.org/) v2.8.12 or newer
 
@@ -102,30 +102,40 @@ To make sure your changes work as intended and don't break existing
 functionality, you'll want to compile and run Google Test and GoogleMock's own
 tests. For that you can use CMake:
 
-    mkdir mybuild
-    cd mybuild
-    cmake -Dgtest_build_tests=ON -Dgmock_build_tests=ON ${GTEST_REPO_DIR}
+```
+mkdir mybuild
+cd mybuild
+cmake -Dgtest_build_tests=ON -Dgmock_build_tests=ON ${GTEST_REPO_DIR}
+```
 
 To choose between building only Google Test or Google Mock, you may modify your
 cmake command to be one of each
 
-    cmake -Dgtest_build_tests=ON ${GTEST_DIR} # sets up Google Test tests
-    cmake -Dgmock_build_tests=ON ${GMOCK_DIR} # sets up Google Mock tests
+```
+cmake -Dgtest_build_tests=ON ${GTEST_DIR} # sets up Google Test tests
+cmake -Dgmock_build_tests=ON ${GMOCK_DIR} # sets up Google Mock tests
+```
 
 Make sure you have Python installed, as some of Google Test's tests are written
 in Python. If the cmake command complains about not being able to find Python
 (`Could NOT find PythonInterp (missing: PYTHON_EXECUTABLE)`), try telling it
 explicitly where your Python executable can be found:
 
-    cmake -DPYTHON_EXECUTABLE=path/to/python ...
+```
+cmake -DPYTHON_EXECUTABLE=path/to/python ...
+```
 
 Next, you can build Google Test and / or Google Mock and all desired tests. On
 \*nix, this is usually done by
 
-    make
+```
+make
+```
 
 To run the tests, do
 
-    make test
+```
+make test
+```
 
 All tests should pass.

CONTRIBUTORS

@@ -55,6 +55,7 @@ Russ Cox <rsc@google.com>
 Russ Rufer <russ@pentad.com>
 Sean Mcafee <eefacm@gmail.com>
 Sigurður Ásgeirsson <siggi@google.com>
+Soyeon Kim <sxshx818@naver.com>
 Sverre Sundsdal <sundsdal@gmail.com>
 Szymon Sobik <sobik.szymon@gmail.com>
 Takeshi Yoshino <tyoshino@google.com>

MODULE.bazel

@@ -0,0 +1,81 @@
+# Copyright 2024 Google Inc.
+# All Rights Reserved.
+#
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# https://bazel.build/external/overview#bzlmod
+
+module(
+    name = "googletest",
+    version = "head",
+    compatibility_level = 1,
+)
+
+# Only direct dependencies need to be listed below.
+# Please keep the versions in sync with the versions in the WORKSPACE file.
+
+bazel_dep(
+    name = "abseil-cpp",
+    version = "20250814.0",
+)
+bazel_dep(
+    name = "platforms",
+    version = "0.0.11",
+)
+bazel_dep(
+    name = "re2",
+    version = "2024-07-02.bcr.1",
+)
+
+bazel_dep(
+    name = "rules_cc",
+    version = "0.2.8"
+)
+
+bazel_dep(
+    name = "rules_python",
+    version = "1.3.0",
+    dev_dependency = True,
+)
+
+# https://rules-python.readthedocs.io/en/stable/toolchains.html#library-modules-with-dev-only-python-usage
+python = use_extension(
+    "@rules_python//python/extensions:python.bzl",
+    "python",
+    dev_dependency = True,
+)
+python.toolchain(
+    ignore_root_user_error = True,
+    is_default = True,
+    python_version = "3.12",
+)
+
+# See fake_fuchsia_sdk.bzl for instructions on how to override this with a real SDK, if needed.
+fuchsia_sdk = use_extension("//:fake_fuchsia_sdk.bzl", "fuchsia_sdk")
+fuchsia_sdk.create_fake()
+use_repo(fuchsia_sdk, "fuchsia_sdk")

README.md

@@ -2,29 +2,28 @@
 
 ### Announcements
 
-#### Live at Head
-
-GoogleTest now follows the
-[Abseil Live at Head philosophy](https://abseil.io/about/philosophy#upgrade-support).
-We recommend
-[updating to the latest commit in the `main` branch as often as possible](https://github.com/abseil/abseil-cpp/blob/master/FAQ.md#what-is-live-at-head-and-how-do-i-do-it).
-
 #### Documentation Updates
 
 Our documentation is now live on GitHub Pages at
 https://google.github.io/googletest/. We recommend browsing the documentation on
 GitHub Pages rather than directly in the repository.
 
-#### Release 1.11.0
+#### Release 1.17.0
 
-[Release 1.11.0](https://github.com/google/googletest/releases/tag/release-1.11.0)
-is now available.
+[Release 1.17.0](https://github.com/google/googletest/releases/tag/v1.17.0) is
+now available.
+
+The 1.17.x branch
+[requires at least C++17](https://opensource.google/documentation/policies/cplusplus-support#c_language_standard).
+
+#### Continuous Integration
+
+We use Google's internal systems for continuous integration.
 
 #### Coming Soon
 
 *   We are planning to take a dependency on
     [Abseil](https://github.com/abseil/abseil-cpp).
-*   More documentation improvements are planned.
 
 ## Welcome to **GoogleTest**, Google's C++ test framework!
 
@@ -43,64 +42,58 @@ More information about building GoogleTest can be found at
 
 ## Features
 
-*   An [xUnit](https://en.wikipedia.org/wiki/XUnit) test framework.
-*   Test discovery.
-*   A rich set of assertions.
-*   User-defined assertions.
-*   Death tests.
-*   Fatal and non-fatal failures.
-*   Value-parameterized tests.
-*   Type-parameterized tests.
-*   Various options for running the tests.
-*   XML test report generation.
+*   xUnit test framework: \
+    Googletest is based on the [xUnit](https://en.wikipedia.org/wiki/XUnit)
+    testing framework, a popular architecture for unit testing
+*   Test discovery: \
+    Googletest automatically discovers and runs your tests, eliminating the need
+    to manually register your tests
+*   Rich set of assertions: \
+    Googletest provides a variety of assertions, such as equality, inequality,
+    exceptions, and more, making it easy to test your code
+*   User-defined assertions: \
+    You can define your own assertions with Googletest, making it simple to
+    write tests that are specific to your code
+*   Death tests: \
+    Googletest supports death tests, which verify that your code exits in a
+    certain way, making it useful for testing error-handling code
+*   Fatal and non-fatal failures: \
+    You can specify whether a test failure should be treated as fatal or
+    non-fatal with Googletest, allowing tests to continue running even if a
+    failure occurs
+*   Value-parameterized tests: \
+    Googletest supports value-parameterized tests, which run multiple times with
+    different input values, making it useful for testing functions that take
+    different inputs
+*   Type-parameterized tests: \
+    Googletest also supports type-parameterized tests, which run with different
+    data types, making it useful for testing functions that work with different
+    data types
+*   Various options for running tests: \
+    Googletest provides many options for running tests including running
+    individual tests, running tests in a specific order and running tests in
+    parallel
 
 ## Supported Platforms
 
-GoogleTest requires a codebase and compiler compliant with the C++11 standard or
-newer.
-
-The GoogleTest code is officially supported on the following platforms.
-Operating systems or tools not listed below are community-supported. For
-community-supported platforms, patches that do not complicate the code may be
-considered.
-
-If you notice any problems on your platform, please file an issue on the
-[GoogleTest GitHub Issue Tracker](https://github.com/google/googletest/issues).
-Pull requests containing fixes are welcome!
-
-### Operating Systems
-
-*   Linux
-*   macOS
-*   Windows
-
-### Compilers
-
-*   gcc 5.0+
-*   clang 5.0+
-*   MSVC 2015+
-
-**macOS users:** Xcode 9.3+ provides clang 5.0+.
-
-### Build Systems
-
-*   [Bazel](https://bazel.build/)
-*   [CMake](https://cmake.org/)
-
-**Note:** Bazel is the build system used by the team internally and in tests.
-CMake is supported on a best-effort basis and by the community.
+GoogleTest follows Google's
+[Foundational C++ Support Policy](https://opensource.google/documentation/policies/cplusplus-support).
+See
+[this table](https://github.com/google/oss-policies-info/blob/main/foundational-cxx-support-matrix.md)
+for a list of currently supported versions of compilers, platforms, and build
+tools.
 
 ## Who Is Using GoogleTest?
 
 In addition to many internal projects at Google, GoogleTest is also used by the
 following notable projects:
 
-*   The [Chromium projects](http://www.chromium.org/) (behind the Chrome browser
-    and Chrome OS).
-*   The [LLVM](http://llvm.org/) compiler.
+*   The [Chromium projects](https://www.chromium.org/) (behind the Chrome
+    browser and Chrome OS).
+*   The [LLVM](https://llvm.org/) compiler.
 *   [Protocol Buffers](https://github.com/google/protobuf), Google's data
     interchange format.
-*   The [OpenCV](http://opencv.org/) computer vision library.
+*   The [OpenCV](https://opencv.org/) computer vision library.
 
 ## Related Open Source Projects
 
@@ -135,7 +128,7 @@ that generates stub code for GoogleTest.
 ## Contributing Changes
 
 Please read
-[`CONTRIBUTING.md`](https://github.com/google/googletest/blob/master/CONTRIBUTING.md)
+[`CONTRIBUTING.md`](https://github.com/google/googletest/blob/main/CONTRIBUTING.md)
 for details on how to contribute to this project.
 
 Happy testing!

WORKSPACE

@@ -1,39 +1,61 @@
-workspace(name = "com_google_googletest")
+# Copyright 2024 Google Inc.
+# All Rights Reserved.
+#
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+workspace(name = "googletest")
+
+load("//:googletest_deps.bzl", "googletest_deps")
+googletest_deps()
 
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
-http_archive(
-    name = "com_google_absl",
-    sha256 = "1a1745b5ee81392f5ea4371a4ca41e55d446eeaee122903b2eaffbd8a3b67a2b",
-    strip_prefix = "abseil-cpp-01cc6567cff77738e416a7ddc17de2d435a780ce",
-    urls = ["https://github.com/abseil/abseil-cpp/archive/01cc6567cff77738e416a7ddc17de2d435a780ce.zip"],  # 2022-06-21T19:28:27Z
-)
-
-# Note this must use a commit from the `abseil` branch of the RE2 project.
-# https://github.com/google/re2/tree/abseil
-http_archive(
-    name = "com_googlesource_code_re2",
-    sha256 = "0a890c2aa0bb05b2ce906a15efb520d0f5ad4c7d37b8db959c43772802991887",
-    strip_prefix = "re2-a427f10b9fb4622dd6d8643032600aa1b50fbd12",
-    urls = ["https://github.com/google/re2/archive/a427f10b9fb4622dd6d8643032600aa1b50fbd12.zip"],  # 2022-06-09
-)
-
 http_archive(
     name = "rules_python",
-    sha256 = "0b460f17771258341528753b1679335b629d1d25e3af28eda47d009c103a6e15",
-    strip_prefix = "rules_python-aef17ad72919d184e5edb7abf61509eb78e57eda",
-    urls = ["https://github.com/bazelbuild/rules_python/archive/aef17ad72919d184e5edb7abf61509eb78e57eda.zip"],  # 2022-06-21T23:44:47Z
-)
-
-http_archive(
-    name = "bazel_skylib",
-    urls = ["https://github.com/bazelbuild/bazel-skylib/releases/download/1.2.1/bazel-skylib-1.2.1.tar.gz"],
-    sha256 = "f7be3474d42aae265405a592bb7da8e171919d74c16f082a5457840f06054728",
+    sha256 = "2cc26bbd53854ceb76dd42a834b1002cd4ba7f8df35440cf03482e045affc244",
+    strip_prefix = "rules_python-1.3.0",
+    url = "https://github.com/bazelbuild/rules_python/releases/download/1.3.0/rules_python-1.3.0.tar.gz",
 )
+# https://github.com/bazelbuild/rules_python/releases/tag/1.1.0
+load("@rules_python//python:repositories.bzl", "py_repositories")
+py_repositories()
 
 http_archive(
     name = "platforms",
-    sha256 = "a879ea428c6d56ab0ec18224f976515948822451473a80d06c2e50af0bbe5121",
-    strip_prefix = "platforms-da5541f26b7de1dc8e04c075c99df5351742a4a2",
-    urls = ["https://github.com/bazelbuild/platforms/archive/da5541f26b7de1dc8e04c075c99df5351742a4a2.zip"],  # 2022-05-27
+    urls = [
+        "https://mirror.bazel.build/github.com/bazelbuild/platforms/releases/download/0.0.11/platforms-0.0.11.tar.gz",
+        "https://github.com/bazelbuild/platforms/releases/download/0.0.11/platforms-0.0.11.tar.gz",
+    ],
+    sha256 = "29742e87275809b5e598dc2f04d86960cc7a55b3067d97221c9abbc9926bff0f",
 )
+
+load("@bazel_features//:deps.bzl", "bazel_features_deps")
+bazel_features_deps()
+
+load("@rules_cc//cc:extensions.bzl", "compatibility_proxy_repo")
+compatibility_proxy_repo()

WORKSPACE.bzlmod

@@ -0,0 +1,35 @@
+# Copyright 2024 Google Inc.
+# All Rights Reserved.
+#
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# https://bazel.build/external/migration#workspace.bzlmod
+#
+# This file is intentionally empty. When bzlmod is enabled and this
+# file exists, the content of WORKSPACE is ignored. This prevents
+# bzlmod builds from unintentionally depending on the WORKSPACE file.

ci/linux-presubmit.sh

@@ -31,39 +31,67 @@
 
 set -euox pipefail
 
-readonly LINUX_LATEST_CONTAINER="gcr.io/google.com/absl-177019/linux_hybrid-latest:20220217"
-readonly LINUX_GCC_FLOOR_CONTAINER="gcr.io/google.com/absl-177019/linux_gcc-floor:20220621"
+readonly LINUX_LATEST_CONTAINER="gcr.io/google.com/absl-177019/linux_hybrid-latest:20250430"
+readonly LINUX_GCC_FLOOR_CONTAINER="gcr.io/google.com/absl-177019/linux_gcc-floor:20250430"
 
 if [[ -z ${GTEST_ROOT:-} ]]; then
   GTEST_ROOT="$(realpath $(dirname ${0})/..)"
 fi
 
-if [[ -z ${STD:-} ]]; then
-  STD="c++11 c++14 c++17 c++20"
+# Use Bazel Vendor mode to reduce reliance on external dependencies.
+# See https://bazel.build/external/vendor and the Dockerfile for
+# an explaination of how this works.
+if [[ ${KOKORO_GFILE_DIR:-} ]] && [[ -f "${KOKORO_GFILE_DIR}/distdir/googletest_vendor.tar.gz" ]]; then
+  DOCKER_EXTRA_ARGS="--mount type=bind,source=${KOKORO_GFILE_DIR}/distdir,target=/distdir,readonly --env=BAZEL_VENDOR_ARCHIVE=/distdir/googletest_vendor.tar.gz ${DOCKER_EXTRA_ARGS:-}"
+  BAZEL_EXTRA_ARGS="--vendor_dir=/googletest_vendor ${BAZEL_EXTRA_ARGS:-}"
 fi
 
-# Test the CMake build
-for cc in /usr/local/bin/gcc /opt/llvm/clang/bin/clang; do
-  for cmake_off_on in OFF ON; do
-    time docker run \
-      --volume="${GTEST_ROOT}:/src:ro" \
-      --tmpfs="/build:exec" \
-      --workdir="/build" \
-      --rm \
-      --env="CC=${cc}" \
-      --env="CXX_FLAGS=\"-Werror -Wdeprecated\"" \
-      ${LINUX_LATEST_CONTAINER} \
-      /bin/bash -c "
-        cmake /src \
-          -DCMAKE_CXX_STANDARD=11 \
-          -Dgtest_build_samples=ON \
-          -Dgtest_build_tests=ON \
-          -Dgmock_build_tests=ON \
-          -Dcxx_no_exception=${cmake_off_on} \
-          -Dcxx_no_rtti=${cmake_off_on} && \
-        make -j$(nproc) && \
-        ctest -j$(nproc) --output-on-failure"
-  done
+if [[ -z ${STD:-} ]]; then
+  STD="c++17 c++20 c++23"
+fi
+
+# Test CMake + GCC
+for cmake_off_on in OFF ON; do
+  time docker run \
+    --volume="${GTEST_ROOT}:/src:ro" \
+    --tmpfs="/build:exec" \
+    --workdir="/build" \
+    --rm \
+    --env="CC=/usr/local/bin/gcc" \
+    --env=CXXFLAGS="-Werror -Wdeprecated" \
+    ${LINUX_LATEST_CONTAINER} \
+    /bin/bash -c "
+      cmake /src \
+        -DCMAKE_CXX_STANDARD=17 \
+        -Dgtest_build_samples=ON \
+        -Dgtest_build_tests=ON \
+        -Dgmock_build_tests=ON \
+        -Dcxx_no_exception=${cmake_off_on} \
+        -Dcxx_no_rtti=${cmake_off_on} && \
+      make -j$(nproc) && \
+      ctest -j$(nproc) --output-on-failure"
+done
+
+# Test CMake + Clang
+for cmake_off_on in OFF ON; do
+  time docker run \
+    --volume="${GTEST_ROOT}:/src:ro" \
+    --tmpfs="/build:exec" \
+    --workdir="/build" \
+    --rm \
+    --env="CC=/opt/llvm/clang/bin/clang" \
+    --env=CXXFLAGS="-Werror -Wdeprecated --gcc-toolchain=/usr/local" \
+    ${LINUX_LATEST_CONTAINER} \
+    /bin/bash -c "
+      cmake /src \
+        -DCMAKE_CXX_STANDARD=17 \
+        -Dgtest_build_samples=ON \
+        -Dgtest_build_tests=ON \
+        -Dgmock_build_tests=ON \
+        -Dcxx_no_exception=${cmake_off_on} \
+        -Dcxx_no_rtti=${cmake_off_on} && \
+      make -j$(nproc) && \
+      ctest -j$(nproc) --output-on-failure"
 done
 
 # Do one test with an older version of GCC
@@ -72,16 +100,22 @@ time docker run \
   --workdir="/src" \
   --rm \
   --env="CC=/usr/local/bin/gcc" \
+  --env="BAZEL_CXXOPTS=-std=c++17" \
+  ${DOCKER_EXTRA_ARGS:-} \
   ${LINUX_GCC_FLOOR_CONTAINER} \
+  /bin/bash --login -c "
     /usr/local/bin/bazel test ... \
-      --copt="-Wall" \
-      --copt="-Werror" \
-      --copt="-Wuninitialized" \
-      --copt="-Wno-error=pragmas" \
-      --distdir="/bazel-distdir" \
+      --copt=\"-Wall\" \
+      --copt=\"-Werror\" \
+      --copt=\"-Wuninitialized\" \
+      --copt=\"-Wundef\" \
+      --copt=\"-Wno-error=pragmas\" \
+      --enable_bzlmod=false \
+      --features=external_include_paths \
       --keep_going \
       --show_timestamps \
-      --test_output=errors
+      --test_output=errors \
+      ${BAZEL_EXTRA_ARGS:-}"
 
 # Test GCC
 for std in ${STD}; do
@@ -92,16 +126,21 @@ for std in ${STD}; do
       --rm \
       --env="CC=/usr/local/bin/gcc" \
       --env="BAZEL_CXXOPTS=-std=${std}" \
+      ${DOCKER_EXTRA_ARGS:-} \
       ${LINUX_LATEST_CONTAINER} \
-      /usr/local/bin/bazel test ... \
-        --copt="-Wall" \
-        --copt="-Werror" \
-        --copt="-Wuninitialized" \
-        --define="absl=${absl}" \
-        --distdir="/bazel-distdir" \
-        --keep_going \
-        --show_timestamps \
-        --test_output=errors
+      /bin/bash --login -c "
+        /usr/local/bin/bazel test ... \
+          --copt=\"-Wall\" \
+          --copt=\"-Werror\" \
+          --copt=\"-Wuninitialized\" \
+          --copt=\"-Wundef\" \
+          --define=\"absl=${absl}\" \
+          --enable_bzlmod=true \
+          --features=external_include_paths \
+          --keep_going \
+          --show_timestamps \
+          --test_output=errors \
+          ${BAZEL_EXTRA_ARGS:-}"
   done
 done
 
@@ -114,17 +153,22 @@ for std in ${STD}; do
       --rm \
       --env="CC=/opt/llvm/clang/bin/clang" \
       --env="BAZEL_CXXOPTS=-std=${std}" \
+      ${DOCKER_EXTRA_ARGS:-} \
       ${LINUX_LATEST_CONTAINER} \
-      /usr/local/bin/bazel test ... \
-        --copt="--gcc-toolchain=/usr/local" \
-        --copt="-Wall" \
-        --copt="-Werror" \
-        --copt="-Wuninitialized" \
-        --define="absl=${absl}" \
-        --distdir="/bazel-distdir" \
-        --keep_going \
-        --linkopt="--gcc-toolchain=/usr/local" \
-        --show_timestamps \
-        --test_output=errors
+      /bin/bash --login -c "
+        /usr/local/bin/bazel test ... \
+          --copt=\"--gcc-toolchain=/usr/local\" \
+          --copt=\"-Wall\" \
+          --copt=\"-Werror\" \
+          --copt=\"-Wuninitialized\" \
+          --copt=\"-Wundef\" \
+          --define=\"absl=${absl}\" \
+          --enable_bzlmod=true \
+          --features=external_include_paths \
+          --keep_going \
+          --linkopt=\"--gcc-toolchain=/usr/local\" \
+          --show_timestamps \
+          --test_output=errors \
+          ${BAZEL_EXTRA_ARGS:-}"
   done
 done

ci/macos-presubmit.sh

@@ -31,6 +31,9 @@
 
 set -euox pipefail
 
+# Use Xcode 16.0
+sudo xcode-select -s /Applications/Xcode_16.0.app/Contents/Developer
+
 if [[ -z ${GTEST_ROOT:-} ]]; then
   GTEST_ROOT="$(realpath $(dirname ${0})/..)"
 fi
@@ -40,20 +43,20 @@ for cmake_off_on in OFF ON; do
   BUILD_DIR=$(mktemp -d build_dir.XXXXXXXX)
   cd ${BUILD_DIR}
   time cmake ${GTEST_ROOT} \
-    -DCMAKE_CXX_STANDARD=11 \
+    -DCMAKE_CXX_STANDARD=17 \
     -Dgtest_build_samples=ON \
     -Dgtest_build_tests=ON \
     -Dgmock_build_tests=ON \
     -Dcxx_no_exception=${cmake_off_on} \
     -Dcxx_no_rtti=${cmake_off_on}
-  time make
+  time make -j$(nproc)
   time ctest -j$(nproc) --output-on-failure
 done
 
 # Test the Bazel build
 
 # If we are running on Kokoro, check for a versioned Bazel binary.
-KOKORO_GFILE_BAZEL_BIN="bazel-3.7.0-darwin-x86_64"
+KOKORO_GFILE_BAZEL_BIN="bazel-8.2.1-darwin-x86_64"
 if [[ ${KOKORO_GFILE_DIR:-} ]] && [[ -f ${KOKORO_GFILE_DIR}/${KOKORO_GFILE_BAZEL_BIN} ]]; then
   BAZEL_BIN="${KOKORO_GFILE_DIR}/${KOKORO_GFILE_BAZEL_BIN}"
   chmod +x ${BAZEL_BIN}
@@ -61,13 +64,24 @@ else
   BAZEL_BIN="bazel"
 fi
 
+# Use Bazel Vendor mode to reduce reliance on external dependencies.
+if [[ ${KOKORO_GFILE_DIR:-} ]] && [[ -f "${KOKORO_GFILE_DIR}/distdir/googletest_vendor.tar.gz" ]]; then
+  tar -xf "${KOKORO_GFILE_DIR}/distdir/googletest_vendor.tar.gz" -C "${HOME}/"
+  BAZEL_EXTRA_ARGS="--vendor_dir=${HOME}/googletest_vendor ${BAZEL_EXTRA_ARGS:-}"
+fi
+
 cd ${GTEST_ROOT}
 for absl in 0 1; do
   ${BAZEL_BIN} test ... \
     --copt="-Wall" \
     --copt="-Werror" \
+    --copt="-Wundef" \
+    --cxxopt="-std=c++17" \
     --define="absl=${absl}" \
+    --enable_bzlmod=true \
+    --features=external_include_paths \
     --keep_going \
     --show_timestamps \
-    --test_output=errors
+    --test_output=errors \
+    ${BAZEL_EXTRA_ARGS:-}
 done

ci/windows-presubmit.bat

@@ -0,0 +1,85 @@
+SETLOCAL ENABLEDELAYEDEXPANSION
+
+SET BAZEL_EXE=%KOKORO_GFILE_DIR%\bazel-8.2.1-windows-x86_64.exe
+
+SET PATH=C:\Python34;%PATH%
+SET BAZEL_PYTHON=C:\python34\python.exe
+SET BAZEL_SH=C:\tools\msys64\usr\bin\bash.exe
+SET CMAKE_BIN="cmake.exe"
+SET CTEST_BIN="ctest.exe"
+SET CTEST_OUTPUT_ON_FAILURE=1
+SET CMAKE_BUILD_PARALLEL_LEVEL=16
+SET CTEST_PARALLEL_LEVEL=16
+
+SET GTEST_ROOT=%~dp0\..
+IF %errorlevel% neq 0 EXIT /B 1
+
+:: ----------------------------------------------------------------------------
+:: CMake
+SET CMAKE_BUILD_PATH=cmake_msvc2022
+MKDIR %CMAKE_BUILD_PATH%
+CD %CMAKE_BUILD_PATH%
+
+%CMAKE_BIN% %GTEST_ROOT% ^
+  -G "Visual Studio 17 2022" ^
+  -DCMAKE_CXX_STANDARD=17 ^
+  -DPYTHON_EXECUTABLE:FILEPATH=c:\python37\python.exe ^
+  -DPYTHON_INCLUDE_DIR:PATH=c:\python37\include ^
+  -DPYTHON_LIBRARY:FILEPATH=c:\python37\lib\site-packages\pip ^
+  -Dgtest_build_samples=ON ^
+  -Dgtest_build_tests=ON ^
+  -Dgmock_build_tests=ON
+IF %errorlevel% neq 0 EXIT /B 1
+
+%CMAKE_BIN% --build . --target ALL_BUILD --config Debug -- -maxcpucount
+IF %errorlevel% neq 0 EXIT /B 1
+
+%CTEST_BIN% -C Debug --timeout 600
+IF %errorlevel% neq 0 EXIT /B 1
+
+CD %GTEST_ROOT%
+RMDIR /S /Q %CMAKE_BUILD_PATH%
+
+:: ----------------------------------------------------------------------------
+:: Bazel
+
+:: The default home directory on Kokoro is a long path which causes errors
+:: because of Windows limitations on path length.
+:: --output_user_root=C:\tmp causes Bazel to use a shorter path.
+SET BAZEL_VS=C:\Program Files\Microsoft Visual Studio\2022\Community
+
+:: Use Bazel Vendor mode to reduce reliance on external dependencies.
+IF EXIST "%KOKORO_GFILE_DIR%\distdir\googletest_vendor.tar.gz" (
+  tar --force-local -xf "%KOKORO_GFILE_DIR%\distdir\googletest_vendor.tar.gz" -C c:
+  SET VENDOR_FLAG=--vendor_dir=c:\googletest_vendor
+) ELSE (
+  SET VENDOR_FLAG=
+)
+
+:: C++17
+%BAZEL_EXE% ^
+  --output_user_root=C:\tmp ^
+  test ... ^
+  --compilation_mode=dbg ^
+  --copt=/std:c++17 ^
+  --copt=/WX ^
+  --enable_bzlmod=true ^
+  --keep_going ^
+  --test_output=errors ^
+  --test_tag_filters=-no_test_msvc2017 ^
+  %VENDOR_FLAG%
+IF %errorlevel% neq 0 EXIT /B 1
+
+:: C++20
+%BAZEL_EXE% ^
+  --output_user_root=C:\tmp ^
+  test ... ^
+  --compilation_mode=dbg ^
+  --copt=/std:c++20 ^
+  --copt=/WX ^
+  --enable_bzlmod=true ^
+  --keep_going ^
+  --test_output=errors ^
+  --test_tag_filters=-no_test_msvc2017 ^
+  %VENDOR_FLAG%
+IF %errorlevel% neq 0 EXIT /B 1

docs/_layouts/default.html

@@ -7,15 +7,15 @@
 
 {% seo %}
     <link rel="stylesheet" href="{{ "/assets/css/style.css?v=" | append: site.github.build_revision | relative_url }}">
+    <!-- Google tag (gtag.js) -->
+    <script async src="https://www.googletagmanager.com/gtag/js?id=G-9PTP6FW1M5"></script>
     <script>
-      window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date;
-      ga('create', 'UA-197576187-1', { 'storage': 'none' });
-      ga('set', 'referrer', document.referrer.split('?')[0]);
-      ga('set', 'location', window.location.href.split('?')[0]);
-      ga('set', 'anonymizeIp', true);
-      ga('send', 'pageview');
+      window.dataLayer = window.dataLayer || [];
+      function gtag(){dataLayer.push(arguments);}
+      gtag('js', new Date());
+
+      gtag('config', 'G-9PTP6FW1M5');
     </script>
-    <script async src='https://www.google-analytics.com/analytics.js'></script>
   </head>
   <body>
     <div class="sidebar">
@@ -48,7 +48,7 @@
       <div class="footer">
         GoogleTest &middot;
         <a href="https://github.com/google/googletest">GitHub Repository</a> &middot;
-        <a href="https://github.com/google/googletest/blob/master/LICENSE">License</a> &middot;
+        <a href="https://github.com/google/googletest/blob/main/LICENSE">License</a> &middot;
         <a href="https://policies.google.com/privacy">Privacy Policy</a>
       </div>
     </div>

docs/advanced.md

@@ -1,9 +1,9 @@
-# Advanced googletest Topics
+# Advanced GoogleTest Topics
 
 ## Introduction
 
-Now that you have read the [googletest Primer](primer.md) and learned how to
-write tests using googletest, it's time to learn some new tricks. This document
+Now that you have read the [GoogleTest Primer](primer.md) and learned how to
+write tests using GoogleTest, it's time to learn some new tricks. This document
 will show you more assertions as well as how to construct complex failure
 messages, propagate fatal failures, reuse and speed up your test fixtures, and
 use various flags with your tests.
@@ -25,7 +25,7 @@ Reference.
 
 ### Predicate Assertions for Better Error Messages
 
-Even though googletest has a rich set of assertions, they can never be complete,
+Even though GoogleTest has a rich set of assertions, they can never be complete,
 as it's impossible (nor a good idea) to anticipate all scenarios a user might
 run into. Therefore, sometimes a user has to use `EXPECT_TRUE()` to check a
 complex expression, for lack of a better macro. This has the problem of not
@@ -35,7 +35,7 @@ failure message by themselves, streaming it into `EXPECT_TRUE()`. However, this
 is awkward especially when the expression has side-effects or is expensive to
 evaluate.
 
-googletest gives you three different options to solve this problem:
+GoogleTest gives you three different options to solve this problem:
 
 #### Using an Existing Boolean Function
 
@@ -286,7 +286,7 @@ For example:
 ```c++
 TEST(SkipTest, DoesSkip) {
   GTEST_SKIP() << "Skipping single test";
-  EXPECT_EQ(0, 1);  // Won't fail; it won't be executed
+  FAIL();  // Won't fail; it won't be executed
 }
 
 class SkipFixture : public ::testing::Test {
@@ -298,15 +298,15 @@ class SkipFixture : public ::testing::Test {
 
 // Tests for SkipFixture won't be executed.
 TEST_F(SkipFixture, SkipsOneTest) {
-  EXPECT_EQ(5, 7);  // Won't fail
+  FAIL();  // Won't fail; it won't be executed
 }
 ```
 
 As with assertion macros, you can stream a custom message into `GTEST_SKIP()`.
 
-## Teaching googletest How to Print Your Values
+## Teaching GoogleTest How to Print Your Values
 
-When a test assertion such as `EXPECT_EQ` fails, googletest prints the argument
+When a test assertion such as `EXPECT_EQ` fails, GoogleTest prints the argument
 values to help you debug. It does this using a user-extensible value printer.
 
 This printer knows how to print built-in C++ types, native arrays, STL
@@ -315,73 +315,143 @@ prints the raw bytes in the value and hopes that you the user can figure it out.
 
 As mentioned earlier, the printer is *extensible*. That means you can teach it
 to do a better job at printing your particular type than to dump the bytes. To
-do that, define `<<` for your type:
-
-```c++
-#include <ostream>
+do that, define an `AbslStringify()` overload as a `friend` function template
+for your type:
 
+```cpp
 namespace foo {
 
-class Bar {  // We want googletest to be able to print instances of this.
-...
-  // Create a free inline friend function.
-  friend std::ostream& operator<<(std::ostream& os, const Bar& bar) {
-    return os << bar.DebugString();  // whatever needed to print bar to os
+class Point {  // We want GoogleTest to be able to print instances of this.
+  ...
+  // Provide a friend overload.
+  template <typename Sink>
+  friend void AbslStringify(Sink& sink, const Point& point) {
+    absl::Format(&sink, "(%d, %d)", point.x, point.y);
   }
+
+  int x;
+  int y;
 };
 
 // If you can't declare the function in the class it's important that the
-// << operator is defined in the SAME namespace that defines Bar.  C++'s look-up
-// rules rely on that.
-std::ostream& operator<<(std::ostream& os, const Bar& bar) {
-  return os << bar.DebugString();  // whatever needed to print bar to os
+// AbslStringify overload is defined in the SAME namespace that defines Point.
+// C++'s look-up rules rely on that.
+enum class EnumWithStringify { kMany = 0, kChoices = 1 };
+
+template <typename Sink>
+void AbslStringify(Sink& sink, EnumWithStringify e) {
+  absl::Format(&sink, "%s", e == EnumWithStringify::kMany ? "Many" : "Choices");
 }
 
 }  // namespace foo
 ```
 
-Sometimes, this might not be an option: your team may consider it bad style to
-have a `<<` operator for `Bar`, or `Bar` may already have a `<<` operator that
-doesn't do what you want (and you cannot change it). If so, you can instead
-define a `PrintTo()` function like this:
+{: .callout .note}
+Note: `AbslStringify()` utilizes a generic "sink" buffer to construct its
+string. For more information about supported operations on `AbslStringify()`'s
+sink, see
+[the `AbslStringify()` documentation](https://abseil.io/docs/cpp/guides/abslstringify).
+
+`AbslStringify()` can also use `absl::StrFormat`'s catch-all `%v` type specifier
+within its own format strings to perform type deduction. `Point` above could be
+formatted as `"(%v, %v)"` for example, and deduce the `int` values as `%d`.
+
+Sometimes, `AbslStringify()` might not be an option: your team may wish to print
+types with extra debugging information for testing purposes only. If so, you can
+instead define a `PrintTo()` function like this:
 
 ```c++
 #include <ostream>
 
 namespace foo {
 
-class Bar {
+class Point {
   ...
-  friend void PrintTo(const Bar& bar, std::ostream* os) {
-    *os << bar.DebugString();  // whatever needed to print bar to os
+  friend void PrintTo(const Point& point, std::ostream* os) {
+    *os << "(" << point.x << "," << point.y << ")";
   }
+
+  int x;
+  int y;
 };
 
 // If you can't declare the function in the class it's important that PrintTo()
-// is defined in the SAME namespace that defines Bar.  C++'s look-up rules rely
-// on that.
-void PrintTo(const Bar& bar, std::ostream* os) {
-  *os << bar.DebugString();  // whatever needed to print bar to os
+// is defined in the SAME namespace that defines Point.  C++'s look-up rules
+// rely on that.
+void PrintTo(const Point& point, std::ostream* os) {
+    *os << "(" << point.x << "," << point.y << ")";
 }
 
 }  // namespace foo
 ```
 
-If you have defined both `<<` and `PrintTo()`, the latter will be used when
-googletest is concerned. This allows you to customize how the value appears in
-googletest's output without affecting code that relies on the behavior of its
-`<<` operator.
+If you have defined both `AbslStringify()` and `PrintTo()`, the latter will be
+used by GoogleTest. This allows you to customize how the value appears in
+GoogleTest's output without affecting code that relies on the behavior of
+`AbslStringify()`.
 
-If you want to print a value `x` using googletest's value printer yourself, just
+If you have an existing `<<` operator and would like to define an
+`AbslStringify()`, the latter will be used for GoogleTest printing.
+
+If you want to print a value `x` using GoogleTest's value printer yourself, just
 call `::testing::PrintToString(x)`, which returns an `std::string`:
 
 ```c++
-vector<pair<Bar, int> > bar_ints = GetBarIntVector();
+vector<pair<Point, int> > point_ints = GetPointIntVector();
 
-EXPECT_TRUE(IsCorrectBarIntVector(bar_ints))
-    << "bar_ints = " << testing::PrintToString(bar_ints);
+EXPECT_TRUE(IsCorrectPointIntVector(point_ints))
+    << "point_ints = " << testing::PrintToString(point_ints);
 ```
 
+For more details regarding `AbslStringify()` and its integration with other
+libraries, see
+[the documentation](https://abseil.io/docs/cpp/guides/abslstringify).
+
+## Regular Expression Syntax
+
+When built with Bazel and using Abseil, GoogleTest uses the
+[RE2](https://github.com/google/re2/wiki/Syntax) syntax. Otherwise, for POSIX
+systems (Linux, Cygwin, Mac), GoogleTest uses the
+[POSIX extended regular expression](https://pubs.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap09.html#tag_09_04)
+syntax. To learn about POSIX syntax, you may want to read this
+[Wikipedia entry](https://en.wikipedia.org/wiki/Regular_expression#POSIX_extended).
+
+On Windows, GoogleTest uses its own simple regular expression implementation. It
+lacks many features. For example, we don't support union (`"x|y"`), grouping
+(`"(xy)"`), brackets (`"[xy]"`), and repetition count (`"x{5,7}"`), among
+others. Below is what we do support (`A` denotes a literal character, period
+(`.`), or a single `\\ ` escape sequence; `x` and `y` denote regular
+expressions.):
+
+Expression | Meaning
+---------- | --------------------------------------------------------------
+`c`        | matches any literal character `c`
+`\\d`      | matches any decimal digit
+`\\D`      | matches any character that's not a decimal digit
+`\\f`      | matches `\f`
+`\\n`      | matches `\n`
+`\\r`      | matches `\r`
+`\\s`      | matches any ASCII whitespace, including `\n`
+`\\S`      | matches any character that's not a whitespace
+`\\t`      | matches `\t`
+`\\v`      | matches `\v`
+`\\w`      | matches any letter, `_`, or decimal digit
+`\\W`      | matches any character that `\\w` doesn't match
+`\\c`      | matches any literal character `c`, which must be a punctuation
+`.`        | matches any single character except `\n`
+`A?`       | matches 0 or 1 occurrences of `A`
+`A*`       | matches 0 or many occurrences of `A`
+`A+`       | matches 1 or many occurrences of `A`
+`^`        | matches the beginning of a string (not that of each line)
+`$`        | matches the end of a string (not that of each line)
+`xy`       | matches `x` followed by `y`
+
+To help you determine which capability is available on your system, GoogleTest
+defines macros to govern which regular expression it is using. The macros are:
+`GTEST_USES_SIMPLE_RE=1` or `GTEST_USES_POSIX_RE=1`. If you want your death
+tests to work in all cases, you can either `#if` on these macros or use the more
+limited syntax only.
+
 ## Death Tests
 
 In many applications, there are assertions that can cause application failure if
@@ -393,7 +463,7 @@ corruption, security holes, or worse. Hence it is vitally important to test that
 such assertion statements work as expected.
 
 Since these precondition checks cause the processes to die, we call such tests
-_death tests_. More generally, any test that checks that a program terminates
+*death tests*. More generally, any test that checks that a program terminates
 (except by throwing an exception) in an expected fashion is also a death test.
 
 Note that if a piece of code throws an exception, we don't consider it "death"
@@ -439,6 +509,12 @@ verifies that:
     exit with exit code 0, and
 *   calling `KillProcess()` kills the process with signal `SIGKILL`.
 
+{: .callout .warning}
+Warning: If your death test contains mocks and is expecting a specific exit
+code, then you must allow the mock objects to be leaked via `Mock::AllowLeak`.
+This is because the mock leak detector will exit with its own error code if it
+detects a leak.
+
 The test function body may contain other assertions and statements as well, if
 necessary.
 
@@ -451,7 +527,7 @@ Note that a death test only cares about three things:
 3.  does the stderr output match `matcher`?
 
 In particular, if `statement` generates an `ASSERT_*` or `EXPECT_*` failure, it
-will **not** cause the death test to fail, as googletest assertions don't abort
+will **not** cause the death test to fail, as GoogleTest assertions don't abort
 the process.
 
 ### Death Test Naming
@@ -480,51 +556,6 @@ TEST_F(FooDeathTest, DoesThat) {
 }
 ```
 
-### Regular Expression Syntax
-
-When built with Bazel and using Abseil, googletest uses the
-[RE2](https://github.com/google/re2/wiki/Syntax) syntax. Otherwise, for POSIX
-systems (Linux, Cygwin, Mac), googletest uses the
-[POSIX extended regular expression](http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap09.html#tag_09_04)
-syntax. To learn about POSIX syntax, you may want to read this
-[Wikipedia entry](http://en.wikipedia.org/wiki/Regular_expression#POSIX_Extended_Regular_Expressions).
-
-On Windows, googletest uses its own simple regular expression implementation. It
-lacks many features. For example, we don't support union (`"x|y"`), grouping
-(`"(xy)"`), brackets (`"[xy]"`), and repetition count (`"x{5,7}"`), among
-others. Below is what we do support (`A` denotes a literal character, period
-(`.`), or a single `\\ ` escape sequence; `x` and `y` denote regular
-expressions.):
-
-Expression | Meaning
----------- | --------------------------------------------------------------
-`c`        | matches any literal character `c`
-`\\d`      | matches any decimal digit
-`\\D`      | matches any character that's not a decimal digit
-`\\f`      | matches `\f`
-`\\n`      | matches `\n`
-`\\r`      | matches `\r`
-`\\s`      | matches any ASCII whitespace, including `\n`
-`\\S`      | matches any character that's not a whitespace
-`\\t`      | matches `\t`
-`\\v`      | matches `\v`
-`\\w`      | matches any letter, `_`, or decimal digit
-`\\W`      | matches any character that `\\w` doesn't match
-`\\c`      | matches any literal character `c`, which must be a punctuation
-`.`        | matches any single character except `\n`
-`A?`       | matches 0 or 1 occurrences of `A`
-`A*`       | matches 0 or many occurrences of `A`
-`A+`       | matches 1 or many occurrences of `A`
-`^`        | matches the beginning of a string (not that of each line)
-`$`        | matches the end of a string (not that of each line)
-`xy`       | matches `x` followed by `y`
-
-To help you determine which capability is available on your system, googletest
-defines macros to govern which regular expression it is using. The macros are:
-`GTEST_USES_SIMPLE_RE=1` or `GTEST_USES_POSIX_RE=1`. If you want your death
-tests to work in all cases, you can either `#if` on these macros or use the more
-limited syntax only.
-
 ### How It Works
 
 See [Death Assertions](reference/assertions.md#death) in the Assertions
@@ -539,7 +570,7 @@ arrange that kind of environment. For example, statically-initialized modules
 may start threads before main is ever reached. Once threads have been created,
 it may be difficult or impossible to clean them up.
 
-googletest has three features intended to raise awareness of threading issues.
+GoogleTest has three features intended to raise awareness of threading issues.
 
 1.  A warning is emitted if multiple threads are running when a death test is
     encountered.
@@ -562,7 +593,7 @@ The automated testing framework does not set the style flag. You can choose a
 particular style of death tests by setting the flag programmatically:
 
 ```c++
-GTEST_FLAG_SET(death_test_style, "threadsafe")
+GTEST_FLAG_SET(death_test_style, "threadsafe");
 ```
 
 You can do this in `main()` to set the style for all death tests in the binary,
@@ -592,7 +623,7 @@ TEST(MyDeathTest, TestTwo) {
 
 The `statement` argument of `ASSERT_EXIT()` can be any valid C++ statement. If
 it leaves the current function via a `return` statement or by throwing an
-exception, the death test is considered to have failed. Some googletest macros
+exception, the death test is considered to have failed. Some GoogleTest macros
 may return from the current function (e.g. `ASSERT_TRUE()`), so be sure to avoid
 them in `statement`.
 
@@ -704,7 +735,7 @@ Some tips on using `SCOPED_TRACE`:
 ### Propagating Fatal Failures
 
 A common pitfall when using `ASSERT_*` and `FAIL*` is not understanding that
-when they fail they only abort the _current function_, not the entire test. For
+when they fail they only abort the *current function*, not the entire test. For
 example, the following test will segfault:
 
 ```c++
@@ -726,7 +757,7 @@ TEST(FooTest, Bar) {
 }
 ```
 
-To alleviate this, googletest provides three different solutions. You could use
+To alleviate this, GoogleTest provides three different solutions. You could use
 either exceptions, the `(ASSERT|EXPECT)_NO_FATAL_FAILURE` assertions or the
 `HasFatalFailure()` function. They are described in the following two
 subsections.
@@ -760,7 +791,7 @@ in it, the test will continue after the subroutine returns. This may not be what
 you want.
 
 Often people want fatal failures to propagate like exceptions. For that
-googletest offers the following macros:
+GoogleTest offers the following macros:
 
 Fatal assertion                       | Nonfatal assertion                    | Verifies
 ------------------------------------- | ------------------------------------- | --------
@@ -852,7 +883,7 @@ will output XML like this:
 >     needs to be prefixed with `::testing::Test::` if used outside of the
 >     `TEST` body and the test fixture class.
 > *   *`key`* must be a valid XML attribute name, and cannot conflict with the
->     ones already used by googletest (`name`, `status`, `time`, `classname`,
+>     ones already used by GoogleTest (`name`, `status`, `time`, `classname`,
 >     `type_param`, and `value_param`).
 > *   Calling `RecordProperty()` outside of the lifespan of a test is allowed.
 >     If it's called outside of a test but between a test suite's
@@ -863,25 +894,25 @@ will output XML like this:
 
 ## Sharing Resources Between Tests in the Same Test Suite
 
-googletest creates a new test fixture object for each test in order to make
+GoogleTest creates a new test fixture object for each test in order to make
 tests independent and easier to debug. However, sometimes tests use resources
 that are expensive to set up, making the one-copy-per-test model prohibitively
 expensive.
 
 If the tests don't change the resource, there's no harm in their sharing a
-single resource copy. So, in addition to per-test set-up/tear-down, googletest
+single resource copy. So, in addition to per-test set-up/tear-down, GoogleTest
 also supports per-test-suite set-up/tear-down. To use it:
 
 1.  In your test fixture class (say `FooTest` ), declare as `static` some member
     variables to hold the shared resources.
 2.  Outside your test fixture class (typically just below it), define those
     member variables, optionally giving them initial values.
-3.  In the same test fixture class, define a `static void SetUpTestSuite()`
-    function (remember not to spell it as **`SetupTestSuite`** with a small
-    `u`!) to set up the shared resources and a `static void TearDownTestSuite()`
-    function to tear them down.
+3.  In the same test fixture class, define a public member function `static void
+    SetUpTestSuite()` (remember not to spell it as **`SetupTestSuite`** with a
+    small `u`!) to set up the shared resources and a `static void
+    TearDownTestSuite()` function to tear them down.
 
-That's it! googletest automatically calls `SetUpTestSuite()` before running the
+That's it! GoogleTest automatically calls `SetUpTestSuite()` before running the
 *first test* in the `FooTest` test suite (i.e. before creating the first
 `FooTest` object), and calls `TearDownTestSuite()` after running the *last test*
 in it (i.e. after deleting the last `FooTest` object). In between, the tests can
@@ -896,7 +927,8 @@ Note that `SetUpTestSuite()` may be called multiple times for a test fixture
 class that has derived classes, so you should not expect code in the function
 body to be run only once. Also, derived classes still have access to shared
 resources defined as static members, so careful consideration is needed when
-managing shared resources to avoid memory leaks.
+managing shared resources to avoid memory leaks if shared resources are not
+properly cleaned up in `TearDownTestSuite()`.
 
 Here's an example of per-test-suite set-up and tear-down:
 
@@ -907,10 +939,15 @@ class FooTest : public testing::Test {
   // Called before the first test in this test suite.
   // Can be omitted if not needed.
   static void SetUpTestSuite() {
-    // Avoid reallocating static objects if called in subclasses of FooTest.
-    if (shared_resource_ == nullptr) {
-      shared_resource_ = new ...;
-    }
+    shared_resource_ = new ...;
+
+    // If `shared_resource_` is **not deleted** in `TearDownTestSuite()`,
+    // reallocation should be prevented because `SetUpTestSuite()` may be called
+    // in subclasses of FooTest and lead to memory leak.
+    //
+    // if (shared_resource_ == nullptr) {
+    //   shared_resource_ = new ...;
+    // }
   }
 
   // Per-test-suite tear-down.
@@ -968,24 +1005,34 @@ class Environment : public ::testing::Environment {
 };
 ```
 
-Then, you register an instance of your environment class with googletest by
+Then, you register an instance of your environment class with GoogleTest by
 calling the `::testing::AddGlobalTestEnvironment()` function:
 
 ```c++
 Environment* AddGlobalTestEnvironment(Environment* env);
 ```
 
-Now, when `RUN_ALL_TESTS()` is called, it first calls the `SetUp()` method of
-each environment object, then runs the tests if none of the environments
-reported fatal failures and `GTEST_SKIP()` was not called. `RUN_ALL_TESTS()`
-always calls `TearDown()` with each environment object, regardless of whether or
-not the tests were run.
+Now, when `RUN_ALL_TESTS()` is invoked, it first calls the `SetUp()` method. The
+tests are then executed, provided that none of the environments have reported
+fatal failures and `GTEST_SKIP()` has not been invoked. Finally, `TearDown()` is
+called.
+
+Note that `SetUp()` and `TearDown()` are only invoked if there is at least one
+test to be performed. Importantly, `TearDown()` is executed even if the test is
+not run due to a fatal failure or `GTEST_SKIP()`.
+
+Calling `SetUp()` and `TearDown()` for each iteration depends on the flag
+`gtest_recreate_environments_when_repeating`. `SetUp()` and `TearDown()` are
+called for each environment object when the object is recreated for each
+iteration. However, if test environments are not recreated for each iteration,
+`SetUp()` is called only on the first iteration, and `TearDown()` is called only
+on the last iteration.
 
 It's OK to register multiple environment objects. In this suite, their `SetUp()`
 will be called in the order they are registered, and their `TearDown()` will be
 called in the reverse order.
 
-Note that googletest takes ownership of the registered environment objects.
+Note that GoogleTest takes ownership of the registered environment objects.
 Therefore **do not delete them** by yourself.
 
 You should call `AddGlobalTestEnvironment()` before `RUN_ALL_TESTS()` is called,
@@ -1037,7 +1084,7 @@ they must be declared **public** rather than **protected** in order to use
 
 ```c++
 class FooTest :
-    public testing::TestWithParam<const char*> {
+    public testing::TestWithParam<absl::string_view> {
   // You can implement all the usual fixture class members here.
   // To access the test parameter, call GetParam() from class
   // TestWithParam<T>.
@@ -1048,7 +1095,7 @@ class BaseTest : public testing::Test {
   ...
 };
 class BarTest : public BaseTest,
-                public testing::WithParamInterface<const char*> {
+                public testing::WithParamInterface<absl::string_view> {
   ...
 };
 ```
@@ -1095,6 +1142,11 @@ instantiation of the test suite. The next argument is the name of the test
 pattern, and the last is the
 [parameter generator](reference/testing.md#param-generators).
 
+The parameter generator expression is not evaluated until GoogleTest is
+initialized (via `InitGoogleTest()`). Any prior initialization done in the
+`main` function will be accessible from the parameter generator, for example,
+the results of flag parsing.
+
 You can instantiate a test pattern more than once, so to distinguish different
 instances of the pattern, the instantiation name is added as a prefix to the
 actual test suite name. Remember to pick unique prefixes for different
@@ -1114,8 +1166,8 @@ with parameter values `"cat"` and `"dog"` using the
 [`ValuesIn`](reference/testing.md#param-generators) parameter generator:
 
 ```c++
-const char* pets[] = {"cat", "dog"};
-INSTANTIATE_TEST_SUITE_P(Pets, FooTest, testing::ValuesIn(pets));
+constexpr absl::string_view kPets[] = {"cat", "dog"};
+INSTANTIATE_TEST_SUITE_P(Pets, FooTest, testing::ValuesIn(kPets));
 ```
 
 The tests from the instantiation above will have these names:
@@ -1142,8 +1194,8 @@ GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(FooTest);
 
 You can see [sample7_unittest.cc] and [sample8_unittest.cc] for more examples.
 
-[sample7_unittest.cc]: https://github.com/google/googletest/blob/master/googletest/samples/sample7_unittest.cc "Parameterized Test example"
-[sample8_unittest.cc]: https://github.com/google/googletest/blob/master/googletest/samples/sample8_unittest.cc "Parameterized Test example with multiple parameters"
+[sample7_unittest.cc]: https://github.com/google/googletest/blob/main/googletest/samples/sample7_unittest.cc "Parameterized Test example"
+[sample8_unittest.cc]: https://github.com/google/googletest/blob/main/googletest/samples/sample8_unittest.cc "Parameterized Test example with multiple parameters"
 
 ### Creating Value-Parameterized Abstract Tests
 
@@ -1294,7 +1346,7 @@ TYPED_TEST(FooTest, HasPropertyA) { ... }
 
 You can see [sample6_unittest.cc] for a complete example.
 
-[sample6_unittest.cc]: https://github.com/google/googletest/blob/master/googletest/samples/sample6_unittest.cc "Typed Test example"
+[sample6_unittest.cc]: https://github.com/google/googletest/blob/main/googletest/samples/sample6_unittest.cc "Typed Test example"
 
 ## Type-Parameterized Tests
 
@@ -1398,17 +1450,19 @@ are two cases to consider:
 To test them, we use the following special techniques:
 
 *   Both static functions and definitions/declarations in an unnamed namespace
-    are only visible within the same translation unit. To test them, you can
-    `#include` the entire `.cc` file being tested in your `*_test.cc` file.
-    (#including `.cc` files is not a good way to reuse code - you should not do
-    this in production code!)
+    are only visible within the same translation unit. To test them, move the
+    private code into the `foo::internal` namespace, where `foo` is the
+    namespace your project normally uses, and put the private declarations in a
+    `*-internal.h` file. Your production `.cc` files and your tests are allowed
+    to include this internal header, but your clients are not. This way, you can
+    fully test your internal implementation without leaking it to your clients.
 
-    However, a better approach is to move the private code into the
-    `foo::internal` namespace, where `foo` is the namespace your project
-    normally uses, and put the private declarations in a `*-internal.h` file.
-    Your production `.cc` files and your tests are allowed to include this
-    internal header, but your clients are not. This way, you can fully test your
-    internal implementation without leaking it to your clients.
+{: .callout .note}
+NOTE: It is also technically *possible* to `#include` the entire `.cc` file
+being tested in your `*_test.cc` file to test static functions and
+definitions/declarations in an unnamed namespace. However, this technique is
+**not recommended** by this documentation and it is only presented here for the
+sake of completeness.
 
 *   Private class members are only accessible from within the class or by
     friends. To access a class' private members, you can declare your test
@@ -1421,10 +1475,7 @@ To test them, we use the following special techniques:
 
     Another way to test private members is to refactor them into an
     implementation class, which is then declared in a `*-internal.h` file. Your
-    clients aren't allowed to include this header but your tests can. Such is
-    called the
-    [Pimpl](https://www.gamedev.net/articles/programming/general-and-gameplay-programming/the-c-pimpl-r1794/)
-    (Private Implementation) idiom.
+    clients aren't allowed to include this header but your tests can.
 
     Or, you can declare an individual test as a friend of your class by adding
     this line in the class body:
@@ -1490,12 +1541,12 @@ To test them, we use the following special techniques:
 
 ## "Catching" Failures
 
-If you are building a testing utility on top of googletest, you'll want to test
-your utility. What framework would you use to test it? googletest, of course.
+If you are building a testing utility on top of GoogleTest, you'll want to test
+your utility. What framework would you use to test it? GoogleTest, of course.
 
 The challenge is to verify that your testing utility reports failures correctly.
 In frameworks that report a failure by throwing an exception, you could catch
-the exception and assert on it. But googletest doesn't use exceptions, so how do
+the exception and assert on it. But GoogleTest doesn't use exceptions, so how do
 we test that a piece of code generates an expected failure?
 
 `"gtest/gtest-spi.h"` contains some constructs to do this.
@@ -1638,9 +1689,9 @@ particular, you cannot find the test suite name in `SetUpTestSuite()`,
 `TearDownTestSuite()` (where you know the test suite name implicitly), or
 functions called from them.
 
-## Extending googletest by Handling Test Events
+## Extending GoogleTest by Handling Test Events
 
-googletest provides an **event listener API** to let you receive notifications
+GoogleTest provides an **event listener API** to let you receive notifications
 about the progress of a test program and test failures. The events you can
 listen to include the start and end of the test program, a test suite, or a test
 method, among others. You may use this API to augment or replace the standard
@@ -1701,7 +1752,7 @@ Here's an example:
 ### Using Event Listeners
 
 To use the event listener you have defined, add an instance of it to the
-googletest event listener list (represented by class
+GoogleTest event listener list (represented by class
 [`TestEventListeners`](reference/testing.md#TestEventListeners) - note the "s"
 at the end of the name) in your `main()` function, before calling
 `RUN_ALL_TESTS()`:
@@ -1712,7 +1763,7 @@ int main(int argc, char** argv) {
   // Gets hold of the event listener list.
   testing::TestEventListeners& listeners =
       testing::UnitTest::GetInstance()->listeners();
-  // Adds a listener to the end.  googletest takes the ownership.
+  // Adds a listener to the end.  GoogleTest takes the ownership.
   listeners.Append(new MinimalistPrinter);
   return RUN_ALL_TESTS();
 }
@@ -1733,7 +1784,7 @@ You can do so by adding one line:
 Now, sit back and enjoy a completely different output from your tests. For more
 details, see [sample9_unittest.cc].
 
-[sample9_unittest.cc]: https://github.com/google/googletest/blob/master/googletest/samples/sample9_unittest.cc "Event listener example"
+[sample9_unittest.cc]: https://github.com/google/googletest/blob/main/googletest/samples/sample9_unittest.cc "Event listener example"
 
 You may append more than one listener to the list. When an `On*Start()` or
 `OnTestPartResult()` event is fired, the listeners will receive it in the order
@@ -1760,17 +1811,17 @@ by the former.
 
 See [sample10_unittest.cc] for an example of a failure-raising listener.
 
-[sample10_unittest.cc]: https://github.com/google/googletest/blob/master/googletest/samples/sample10_unittest.cc "Failure-raising listener example"
+[sample10_unittest.cc]: https://github.com/google/googletest/blob/main/googletest/samples/sample10_unittest.cc "Failure-raising listener example"
 
 ## Running Test Programs: Advanced Options
 
-googletest test programs are ordinary executables. Once built, you can run them
+GoogleTest test programs are ordinary executables. Once built, you can run them
 directly and affect their behavior via the following environment variables
 and/or command line flags. For the flags to work, your programs must call
 `::testing::InitGoogleTest()` before calling `RUN_ALL_TESTS()`.
 
 To see a list of supported flags and their usage, please run your test program
-with the `--help` flag. You can also use `-h`, `-?`, or `/?` for short.
+with the `--help` flag.
 
 If an option is specified both by an environment variable and by a flag, the
 latter takes precedence.
@@ -1797,10 +1848,10 @@ corresponding environment variable for this flag.
 
 #### Running a Subset of the Tests
 
-By default, a googletest program runs all tests the user has defined. Sometimes,
+By default, a GoogleTest program runs all tests the user has defined. Sometimes,
 you want to run only a subset of the tests (e.g. for debugging or quickly
 verifying a change). If you set the `GTEST_FILTER` environment variable or the
-`--gtest_filter` flag to a filter string, googletest will only run the tests
+`--gtest_filter` flag to a filter string, GoogleTest will only run the tests
 whose full names (in the form of `TestSuiteName.TestName`) match the filter.
 
 The format of a filter is a '`:`'-separated list of wildcard patterns (called
@@ -1831,7 +1882,7 @@ For example:
 
 #### Stop test execution upon first failure
 
-By default, a googletest program runs all tests the user has defined. In some
+By default, a GoogleTest program runs all tests the user has defined. In some
 cases (e.g. iterative test development & execution) it may be desirable stop
 test execution upon first failure (trading improved latency for completeness).
 If `GTEST_FAIL_FAST` environment variable or `--gtest_fail_fast` flag is set,
@@ -1848,7 +1899,7 @@ If you need to disable all tests in a test suite, you can either add `DISABLED_`
 to the front of the name of each test, or alternatively add it to the front of
 the test suite name.
 
-For example, the following tests won't be run by googletest, even though they
+For example, the following tests won't be run by GoogleTest, even though they
 will still be compiled:
 
 ```c++
@@ -1863,7 +1914,7 @@ TEST_F(DISABLED_BarTest, DoesXyz) { ... }
 
 {: .callout .note}
 NOTE: This feature should only be used for temporary pain-relief. You still have
-to fix the disabled tests at a later date. As a reminder, googletest will print
+to fix the disabled tests at a later date. As a reminder, GoogleTest will print
 a banner warning you if a test program contains any disabled tests.
 
 {: .callout .tip}
@@ -1879,6 +1930,35 @@ the `--gtest_also_run_disabled_tests` flag or set the
 You can combine this with the `--gtest_filter` flag to further select which
 disabled tests to run.
 
+### Enforcing Having At Least One Test Case
+
+A not uncommon programmer mistake is to write a test program that has no test
+case linked in. This can happen, for example, when you put test case definitions
+in a library and the library is not marked as "always link".
+
+To catch such mistakes, run the test program with the
+`--gtest_fail_if_no_test_linked` flag or set the `GTEST_FAIL_IF_NO_TEST_LINKED`
+environment variable to a value other than `0`. Now the program will fail if no
+test case is linked in.
+
+Note that *any* test case linked in makes the program valid for the purpose of
+this check. In particular, even a disabled test case suffices.
+
+### Enforcing Running At Least One Test Case
+
+In addition to enforcing that tests are defined in the binary with
+`--gtest_fail_if_no_test_linked`, it is also possible to enforce that a test
+case was actually executed to ensure that resources are not consumed by tests
+that do nothing.
+
+To catch such optimization opportunities, run the test program with the
+`--gtest_fail_if_no_test_selected` flag or set the
+`GTEST_FAIL_IF_NO_TEST_SELECTED` environment variable to a value other than `0`.
+
+A test is considered selected if it begins to run, even if it is later skipped
+via `GTEST_SKIP`. Thus, `DISABLED` tests do not count as selected and neither do
+tests that are not matched by `--gtest_filter`.
+
 ### Repeating the Tests
 
 Once in a while you'll run into a test whose result is hit-or-miss. Perhaps it
@@ -1908,8 +1988,12 @@ Repeat the tests whose name matches the filter 1000 times.
 
 If your test program contains
 [global set-up/tear-down](#global-set-up-and-tear-down) code, it will be
-repeated in each iteration as well, as the flakiness may be in it. You can also
-specify the repeat count by setting the `GTEST_REPEAT` environment variable.
+repeated in each iteration as well, as the flakiness may be in it. To avoid
+repeating global set-up/tear-down, specify
+`--gtest_recreate_environments_when_repeating=false`{.nowrap}.
+
+You can also specify the repeat count by setting the `GTEST_REPEAT` environment
+variable.
 
 ### Shuffling the Tests
 
@@ -1917,16 +2001,16 @@ You can specify the `--gtest_shuffle` flag (or set the `GTEST_SHUFFLE`
 environment variable to `1`) to run the tests in a program in a random order.
 This helps to reveal bad dependencies between tests.
 
-By default, googletest uses a random seed calculated from the current time.
+By default, GoogleTest uses a random seed calculated from the current time.
 Therefore you'll get a different order every time. The console output includes
 the random seed value, such that you can reproduce an order-related test failure
 later. To specify the random seed explicitly, use the `--gtest_random_seed=SEED`
 flag (or set the `GTEST_RANDOM_SEED` environment variable), where `SEED` is an
 integer in the range [0, 99999]. The seed value 0 is special: it tells
-googletest to do the default behavior of calculating the seed from the current
+GoogleTest to do the default behavior of calculating the seed from the current
 time.
 
-If you combine this with `--gtest_repeat=N`, googletest will pick a different
+If you combine this with `--gtest_repeat=N`, GoogleTest will pick a different
 random seed and re-shuffle the tests in each iteration.
 
 ### Distributing Test Functions to Multiple Machines
@@ -1985,7 +2069,7 @@ shards, but here's one possible scenario:
 
 #### Colored Terminal Output
 
-googletest can use colors in its terminal output to make it easier to spot the
+GoogleTest can use colors in its terminal output to make it easier to spot the
 important information:
 
 <pre>...
@@ -2010,25 +2094,25 @@ important information:
 
 You can set the `GTEST_COLOR` environment variable or the `--gtest_color`
 command line flag to `yes`, `no`, or `auto` (the default) to enable colors,
-disable colors, or let googletest decide. When the value is `auto`, googletest
+disable colors, or let GoogleTest decide. When the value is `auto`, GoogleTest
 will use colors if and only if the output goes to a terminal and (on non-Windows
 platforms) the `TERM` environment variable is set to `xterm` or `xterm-color`.
 
 #### Suppressing test passes
 
-By default, googletest prints 1 line of output for each test, indicating if it
+By default, GoogleTest prints 1 line of output for each test, indicating if it
 passed or failed. To show only test failures, run the test program with
 `--gtest_brief=1`, or set the GTEST_BRIEF environment variable to `1`.
 
 #### Suppressing the Elapsed Time
 
-By default, googletest prints the time it takes to run each test. To disable
+By default, GoogleTest prints the time it takes to run each test. To disable
 that, run the test program with the `--gtest_print_time=0` command line flag, or
 set the GTEST_PRINT_TIME environment variable to `0`.
 
 #### Suppressing UTF-8 Text Output
 
-In case of assertion failures, googletest prints expected and actual values of
+In case of assertion failures, GoogleTest prints expected and actual values of
 type `string` both as hex-encoded strings as well as in readable UTF-8 text if
 they contain valid non-ASCII UTF-8 characters. If you want to suppress the UTF-8
 text because, for example, you don't have an UTF-8 compatible output medium, run
@@ -2037,7 +2121,7 @@ environment variable to `0`.
 
 #### Generating an XML Report
 
-googletest can emit a detailed XML report to a file in addition to its normal
+GoogleTest can emit a detailed XML report to a file in addition to its normal
 textual output. The report contains the duration of each test, and thus can help
 you identify slow tests.
 
@@ -2048,15 +2132,15 @@ in which case the output can be found in the `test_detail.xml` file in the
 current directory.
 
 If you specify a directory (for example, `"xml:output/directory/"` on Linux or
-`"xml:output\directory\"` on Windows), googletest will create the XML file in
+`"xml:output\directory\"` on Windows), GoogleTest will create the XML file in
 that directory, named after the test executable (e.g. `foo_test.xml` for test
 program `foo_test` or `foo_test.exe`). If the file already exists (perhaps left
-over from a previous run), googletest will pick a different name (e.g.
+over from a previous run), GoogleTest will pick a different name (e.g.
 `foo_test_1.xml`) to avoid overwriting it.
 
 The report is based on the `junitreport` Ant task. Since that format was
 originally intended for Java, a little interpretation is required to make it
-apply to googletest tests, as shown here:
+apply to GoogleTest tests, as shown here:
 
 ```xml
 <testsuites name="AllTests" ...>
@@ -2071,8 +2155,8 @@ apply to googletest tests, as shown here:
 ```
 
 *   The root `<testsuites>` element corresponds to the entire test program.
-*   `<testsuite>` elements correspond to googletest test suites.
-*   `<testcase>` elements correspond to googletest test functions.
+*   `<testsuite>` elements correspond to GoogleTest test suites.
+*   `<testcase>` elements correspond to GoogleTest test functions.
 
 For instance, the following program
 
@@ -2105,7 +2189,7 @@ could generate this report:
 Things to note:
 
 *   The `tests` attribute of a `<testsuites>` or `<testsuite>` element tells how
-    many test functions the googletest program or test suite contains, while the
+    many test functions the GoogleTest program or test suite contains, while the
     `failures` attribute tells how many of them failed.
 
 *   The `time` attribute expresses the duration of the test, test suite, or
@@ -2117,12 +2201,12 @@ Things to note:
 *   The `file` and `line` attributes record the source file location, where the
     test was defined.
 
-*   Each `<failure>` element corresponds to a single failed googletest
+*   Each `<failure>` element corresponds to a single failed GoogleTest
     assertion.
 
 #### Generating a JSON Report
 
-googletest can also emit a JSON report as an alternative format to XML. To
+GoogleTest can also emit a JSON report as an alternative format to XML. To
 generate the JSON report, set the `GTEST_OUTPUT` environment variable or the
 `--gtest_output` flag to the string `"json:path_to_output_file"`, which will
 create the file at the given location. You can also just use the string
@@ -2133,7 +2217,7 @@ The report format conforms to the following JSON Schema:
 
 ```json
 {
-  "$schema": "http://json-schema.org/schema#",
+  "$schema": "https://json-schema.org/schema#",
   "type": "object",
   "definitions": {
     "TestCase": {
@@ -2334,7 +2418,7 @@ IMPORTANT: The exact format of the JSON document is subject to change.
 
 #### Detecting Test Premature Exit
 
-Google Test implements the _premature-exit-file_ protocol for test runners to
+Google Test implements the *premature-exit-file* protocol for test runners to
 catch any kind of unexpected exits of test programs. Upon start, Google Test
 creates the file which will be automatically deleted after all work has been
 finished. Then, the test runner can check if this file exists. In case the file
@@ -2347,7 +2431,7 @@ variable has been set.
 
 When running test programs under a debugger, it's very convenient if the
 debugger can catch an assertion failure and automatically drop into interactive
-mode. googletest's *break-on-failure* mode supports this behavior.
+mode. GoogleTest's *break-on-failure* mode supports this behavior.
 
 To enable it, set the `GTEST_BREAK_ON_FAILURE` environment variable to a value
 other than `0`. Alternatively, you can use the `--gtest_break_on_failure`
@@ -2355,9 +2439,9 @@ command line flag.
 
 #### Disabling Catching Test-Thrown Exceptions
 
-googletest can be used either with or without exceptions enabled. If a test
+GoogleTest can be used either with or without exceptions enabled. If a test
 throws a C++ exception or (on Windows) a structured exception (SEH), by default
-googletest catches it, reports it as a test failure, and continues with the next
+GoogleTest catches it, reports it as a test failure, and continues with the next
 test method. This maximizes the coverage of a test run. Also, on Windows an
 uncaught exception will cause a pop-up window, so catching the exceptions allows
 you to run the tests automatically.
@@ -2395,4 +2479,4 @@ void __tsan_on_report() {
 ```
 
 After compiling your project with one of the sanitizers enabled, if a particular
-test triggers a sanitizer error, googletest will report that it failed.
+test triggers a sanitizer error, GoogleTest will report that it failed.

docs/faq.md

@@ -3,7 +3,7 @@
 ## Why should test suite names and test names not contain underscore?
 
 {: .callout .note}
-Note: GoogleTest reserves underscore (`_`) for special purpose keywords, such as
+Note: GoogleTest reserves underscore (`_`) for special-purpose keywords, such as
 [the `DISABLED_` prefix](advanced.md#temporarily-disabling-tests), in addition
 to the following rationale.
 
@@ -33,9 +33,9 @@ contains `_`?
     `TestSuiteName_Bar__Test`, which is invalid.
 
 So clearly `TestSuiteName` and `TestName` cannot start or end with `_`
-(Actually, `TestSuiteName` can start with `_` -- as long as the `_` isn't
-followed by an upper-case letter. But that's getting complicated. So for
-simplicity we just say that it cannot start with `_`.).
+(Actually, `TestSuiteName` can start with `_`—as long as the `_` isn't followed
+by an upper-case letter. But that's getting complicated. So for simplicity we
+just say that it cannot start with `_`.).
 
 It may seem fine for `TestSuiteName` and `TestName` to contain `_` in the
 middle. However, consider this:
@@ -128,30 +128,9 @@ both approaches a try. Practice is a much better way to grasp the subtle
 differences between the two tools. Once you have some concrete experience, you
 can much more easily decide which one to use the next time.
 
-## I got some run-time errors about invalid proto descriptors when using `ProtocolMessageEquals`. Help!
-
-{: .callout .note}
-**Note:** `ProtocolMessageEquals` and `ProtocolMessageEquiv` are *deprecated*
-now. Please use `EqualsProto`, etc instead.
-
-`ProtocolMessageEquals` and `ProtocolMessageEquiv` were redefined recently and
-are now less tolerant of invalid protocol buffer definitions. In particular, if
-you have a `foo.proto` that doesn't fully qualify the type of a protocol message
-it references (e.g. `message<Bar>` where it should be `message<blah.Bar>`), you
-will now get run-time errors like:
-
-```
-... descriptor.cc:...] Invalid proto descriptor for file "path/to/foo.proto":
-... descriptor.cc:...]  blah.MyMessage.my_field: ".Bar" is not defined.
-```
-
-If you see this, your `.proto` file is broken and needs to be fixed by making
-the types fully qualified. The new definition of `ProtocolMessageEquals` and
-`ProtocolMessageEquiv` just happen to reveal your bug.
-
 ## My death test modifies some state, but the change seems lost after the death test finishes. Why?
 
-Death tests (`EXPECT_DEATH`, etc) are executed in a sub-process s.t. the
+Death tests (`EXPECT_DEATH`, etc.) are executed in a sub-process s.t. the
 expected crash won't kill the test program (i.e. the parent process). As a
 result, any in-memory side effects they incur are observable in their respective
 sub-processes, but not in the parent process. You can think of them as running
@@ -192,16 +171,16 @@ class Foo {
 };
 ```
 
-You also need to define it *outside* of the class body in `foo.cc`:
+you also need to define it *outside* of the class body in `foo.cc`:
 
 ```c++
 const int Foo::kBar;  // No initializer here.
 ```
 
 Otherwise your code is **invalid C++**, and may break in unexpected ways. In
-particular, using it in GoogleTest comparison assertions (`EXPECT_EQ`, etc) will
-generate an "undefined reference" linker error. The fact that "it used to work"
-doesn't mean it's valid. It just means that you were lucky. :-)
+particular, using it in GoogleTest comparison assertions (`EXPECT_EQ`, etc.)
+will generate an "undefined reference" linker error. The fact that "it used to
+work" doesn't mean it's valid. It just means that you were lucky. :-)
 
 If the declaration of the static data member is `constexpr` then it is
 implicitly an `inline` definition, and a separate definition in `foo.cc` is not
@@ -267,7 +246,7 @@ If necessary, you can continue to derive test fixtures from a derived fixture.
 GoogleTest has no limit on how deep the hierarchy can be.
 
 For a complete example using derived test fixtures, see
-[sample5_unittest.cc](https://github.com/google/googletest/blob/master/googletest/samples/sample5_unittest.cc).
+[sample5_unittest.cc](https://github.com/google/googletest/blob/main/googletest/samples/sample5_unittest.cc).
 
 ## My compiler complains "void value not ignored as it ought to be." What does this mean?
 
@@ -311,7 +290,7 @@ a **fresh** test fixture object, immediately call `SetUp()`, run the test body,
 call `TearDown()`, and then delete the test fixture object.
 
 When you need to write per-test set-up and tear-down logic, you have the choice
-between using the test fixture constructor/destructor or `SetUp()/TearDown()`.
+between using the test fixture constructor/destructor or `SetUp()`/`TearDown()`.
 The former is usually preferred, as it has the following benefits:
 
 *   By initializing a member variable in the constructor, we have the option to
@@ -352,7 +331,7 @@ You may still want to use `SetUp()/TearDown()` in the following cases:
     GoogleTest assertions in a destructor if your code could run on such a
     platform.
 
-## The compiler complains "no matching function to call" when I use ASSERT_PRED*. How do I fix it?
+## The compiler complains "no matching function to call" when I use `ASSERT_PRED*`. How do I fix it?
 
 See details for [`EXPECT_PRED*`](reference/assertions.md#EXPECT_PRED) in the
 Assertions Reference.
@@ -410,7 +389,7 @@ C++ is case-sensitive. Did you spell it as `Setup()`?
 Similarly, sometimes people spell `SetUpTestSuite()` as `SetupTestSuite()` and
 wonder why it's never called.
 
-## I have several test suites which share the same test fixture logic, do I have to define a new test fixture class for each of them? This seems pretty tedious.
+## I have several test suites which share the same test fixture logic; do I have to define a new test fixture class for each of them? This seems pretty tedious.
 
 You don't have to. Instead of
 
@@ -532,20 +511,7 @@ However, there are cases where you have to define your own:
     list of the constructor. (Early versions of `gcc` doesn't force you to
     initialize the const member. It's a bug that has been fixed in `gcc 4`.)
 
-## Why does ASSERT_DEATH complain about previous threads that were already joined?
-
-With the Linux pthread library, there is no turning back once you cross the line
-from a single thread to multiple threads. The first time you create a thread, a
-manager thread is created in addition, so you get 3, not 2, threads. Later when
-the thread you create joins the main thread, the thread count decrements by 1,
-but the manager thread will never be killed, so you still have 2 threads, which
-means you cannot safely run a death test.
-
-The new NPTL thread library doesn't suffer from this problem, as it doesn't
-create a manager thread. However, if you don't control which machine your test
-runs on, you shouldn't depend on this.
-
-## Why does GoogleTest require the entire test suite, instead of individual tests, to be named *DeathTest when it uses ASSERT_DEATH?
+## Why does GoogleTest require the entire test suite, instead of individual tests, to be named `*DeathTest` when it uses `ASSERT_DEATH`?
 
 GoogleTest does not interleave tests from different test suites. That is, it
 runs all tests in one test suite first, and then runs all tests in the next test
@@ -570,7 +536,7 @@ interleave tests from different test suites, we need to run all tests in the
 `FooTest` case before running any test in the `BarTest` case. This contradicts
 with the requirement to run `BarTest.DefDeathTest` before `FooTest.Uvw`.
 
-## But I don't like calling my entire test suite \*DeathTest when it contains both death tests and non-death tests. What do I do?
+## But I don't like calling my entire test suite `*DeathTest` when it contains both death tests and non-death tests. What do I do?
 
 You don't have to, but if you like, you may split up the test suite into
 `FooTest` and `FooDeathTest`, where the names make it clear that they are
@@ -607,7 +573,7 @@ defined such that we can print a value of `FooType`.
 
 In addition, if `FooType` is declared in a name space, the `<<` operator also
 needs to be defined in the *same* name space. See
-[Tip of the Week #49](http://abseil.io/tips/49) for details.
+[Tip of the Week #49](https://abseil.io/tips/49) for details.
 
 ## How do I suppress the memory leak messages on Windows?
 
@@ -628,10 +594,10 @@ mistake in production. Such cleverness also leads to
 advise against the practice, and GoogleTest doesn't provide a way to do it.
 
 In general, the recommended way to cause the code to behave differently under
-test is [Dependency Injection](http://en.wikipedia.org/wiki/Dependency_injection). You can inject
+test is [Dependency Injection](https://en.wikipedia.org/wiki/Dependency_injection). You can inject
 different functionality from the test and from the production code. Since your
 production code doesn't link in the for-test logic at all (the
-[`testonly`](http://docs.bazel.build/versions/master/be/common-definitions.html#common.testonly) attribute for BUILD targets helps to ensure
+[`testonly`](https://docs.bazel.build/versions/master/be/common-definitions.html#common.testonly) attribute for BUILD targets helps to ensure
 that), there is no danger in accidentally running it.
 
 However, if you *really*, *really*, *really* have no choice, and if you follow
@@ -654,7 +620,7 @@ the `--gtest_also_run_disabled_tests` flag.
 Yes.
 
 The rule is **all test methods in the same test suite must use the same fixture
-class.** This means that the following is **allowed** because both tests use the
+class**. This means that the following is **allowed** because both tests use the
 same fixture class (`::testing::Test`).
 
 ```c++

docs/gmock_cheat_sheet.md

@@ -20,7 +20,7 @@ class Foo {
 (note that `~Foo()` **must** be virtual) we can define its mock as
 
 ```cpp
-#include "gmock/gmock.h"
+#include <gmock/gmock.h>
 
 class MockFoo : public Foo {
  public:
@@ -130,7 +130,7 @@ TEST(BarTest, DoesThis) {
 ## Setting Default Actions {#OnCall}
 
 gMock has a **built-in default action** for any function that returns `void`,
-`bool`, a numeric value, or a pointer. In C++11, it will additionally returns
+`bool`, a numeric value, or a pointer. In C++11, it additionally returns
 the default-constructed value, if one exists for the given type.
 
 To customize the default action for functions with return type `T`, use
@@ -140,7 +140,7 @@ To customize the default action for functions with return type `T`, use
   // Sets the default action for return type std::unique_ptr<Buzz> to
   // creating a new Buzz every time.
   DefaultValue<std::unique_ptr<Buzz>>::SetFactory(
-      [] { return MakeUnique<Buzz>(AccessLevel::kInternal); });
+      [] { return std::make_unique<Buzz>(AccessLevel::kInternal); });
 
   // When this fires, the default action of MakeBuzz() will run, which
   // will return a new Buzz object.

docs/gmock_cook_book.md

@@ -177,7 +177,7 @@ class StackInterface {
 template <typename Elem>
 class MockStack : public StackInterface<Elem> {
   ...
-  MOCK_METHOD(int, GetSize, (), (override));
+  MOCK_METHOD(int, GetSize, (), (const, override));
   MOCK_METHOD(void, Push, (const Elem& x), (override));
 };
 ```
@@ -285,6 +285,10 @@ If you are concerned about the performance overhead incurred by virtual
 functions, and profiling confirms your concern, you can combine this with the
 recipe for [mocking non-virtual methods](#MockingNonVirtualMethods).
 
+Alternatively, instead of introducing a new interface, you can rewrite your code
+to accept a std::function instead of the free function, and then use
+[MockFunction](#MockFunction) to mock the std::function.
+
 ### Old-Style `MOCK_METHODn` Macros
 
 Before the generic `MOCK_METHOD` macro
@@ -693,9 +697,9 @@ TEST(AbcTest, Xyz) {
   EXPECT_CALL(foo, DoThat(_, _));
 
   int n = 0;
-  EXPECT_EQ('+', foo.DoThis(5));  // FakeFoo::DoThis() is invoked.
+  EXPECT_EQ(foo.DoThis(5), '+');  // FakeFoo::DoThis() is invoked.
   foo.DoThat("Hi", &n);  // FakeFoo::DoThat() is invoked.
-  EXPECT_EQ(2, n);
+  EXPECT_EQ(n, 2);
 }
 ```
 
@@ -896,15 +900,16 @@ using ::testing::Not;
 
 Matchers are function objects, and parametrized matchers can be composed just
 like any other function. However because their types can be long and rarely
-provide meaningful information, it can be easier to express them with C++14
-generic lambdas to avoid specifying types. For example,
+provide meaningful information, it can be easier to express them with template
+parameters and `auto`. For example,
 
 ```cpp
 using ::testing::Contains;
 using ::testing::Property;
 
-inline constexpr auto HasFoo = [](const auto& f) {
-  return Property(&MyClass::foo, Contains(f));
+template <typename SubMatcher>
+inline constexpr auto HasFoo(const SubMatcher& sub_matcher) {
+  return Property("foo", &MyClass::foo, Contains(sub_matcher));
 };
 ...
   EXPECT_THAT(x, HasFoo("blah"));
@@ -932,8 +937,8 @@ casts a matcher `m` to type `Matcher<T>`. To ensure safety, gMock checks that
     floating-point numbers), the conversion from `T` to `U` is not lossy (in
     other words, any value representable by `T` can also be represented by `U`);
     and
-3.  When `U` is a reference, `T` must also be a reference (as the underlying
-    matcher may be interested in the address of the `U` value).
+3.  When `U` is a non-const reference, `T` must also be a reference (as the
+    underlying matcher may be interested in the address of the `U` value).
 
 The code won't compile if any of these conditions isn't met.
 
@@ -1125,11 +1130,11 @@ using STL's `<functional>` header is just painful). For example, here's a
 predicate that's satisfied by any number that is >= 0, <= 100, and != 50:
 
 ```cpp
-using testing::AllOf;
-using testing::Ge;
-using testing::Le;
-using testing::Matches;
-using testing::Ne;
+using ::testing::AllOf;
+using ::testing::Ge;
+using ::testing::Le;
+using ::testing::Matches;
+using ::testing::Ne;
 ...
 Matches(AllOf(Ge(0), Le(100), Ne(50)))
 ```
@@ -1158,7 +1163,7 @@ int IsEven(int n) { return (n % 2) == 0 ? 1 : 0; }
 ```
 
 Note that the predicate function / functor doesn't have to return `bool`. It
-works as long as the return value can be used as the condition in in statement
+works as long as the return value can be used as the condition in the statement
 `if (condition) ...`.
 
 ### Matching Arguments that Are Not Copyable
@@ -1345,7 +1350,7 @@ class BarPlusBazEqMatcher {
 
 ...
   Foo foo;
-  EXPECT_CALL(foo, BarPlusBazEq(5))...;
+  EXPECT_THAT(foo, BarPlusBazEq(5))...;
 ```
 
 ### Matching Containers
@@ -1424,11 +1429,12 @@ Use `Pair` when comparing maps or other associative containers.
 {% raw %}
 
 ```cpp
-using testing::ElementsAre;
-using testing::Pair;
+using ::testing::UnorderedElementsAre;
+using ::testing::Pair;
 ...
-  std::map<string, int> m = {{"a", 1}, {"b", 2}, {"c", 3}};
-  EXPECT_THAT(m, ElementsAre(Pair("a", 1), Pair("b", 2), Pair("c", 3)));
+  absl::flat_hash_map<string, int> m = {{"a", 1}, {"b", 2}, {"c", 3}};
+  EXPECT_THAT(m, UnorderedElementsAre(
+      Pair("a", 1), Pair("b", 2), Pair("c", 3)));
 ```
 
 {% endraw %}
@@ -1445,8 +1451,8 @@ using testing::Pair;
 *   If the container is passed by pointer instead of by reference, just write
     `Pointee(ElementsAre*(...))`.
 *   The order of elements *matters* for `ElementsAre*()`. If you are using it
-    with containers whose element order are undefined (e.g. `hash_map`) you
-    should use `WhenSorted` around `ElementsAre`.
+    with containers whose element order are undefined (such as a
+    `std::unordered_map`) you should use `UnorderedElementsAre`.
 
 ### Sharing Matchers
 
@@ -1856,7 +1862,7 @@ error. So, what shall you do?
 Though you may be tempted, DO NOT use `std::ref()`:
 
 ```cpp
-using testing::Return;
+using ::testing::Return;
 
 class MockFoo : public Foo {
  public:
@@ -1868,7 +1874,7 @@ class MockFoo : public Foo {
   EXPECT_CALL(foo, GetValue())
       .WillRepeatedly(Return(std::ref(x)));  // Wrong!
   x = 42;
-  EXPECT_EQ(42, foo.GetValue());
+  EXPECT_EQ(foo.GetValue(), 42);
 ```
 
 Unfortunately, it doesn't work here. The above code will fail with error:
@@ -1890,20 +1896,20 @@ the expectation is set, and `Return(std::ref(x))` will always return 0.
 returns the value pointed to by `pointer` at the time the action is *executed*:
 
 ```cpp
-using testing::ReturnPointee;
+using ::testing::ReturnPointee;
 ...
   int x = 0;
   MockFoo foo;
   EXPECT_CALL(foo, GetValue())
       .WillRepeatedly(ReturnPointee(&x));  // Note the & here.
   x = 42;
-  EXPECT_EQ(42, foo.GetValue());  // This will succeed now.
+  EXPECT_EQ(foo.GetValue(), 42);  // This will succeed now.
 ```
 
 ### Combining Actions
 
 Want to do more than one thing when a function is called? That's fine. `DoAll()`
-allow you to do sequence of actions every time. Only the return value of the
+allows you to do a sequence of actions every time. Only the return value of the
 last action in the sequence will be used.
 
 ```cpp
@@ -1922,6 +1928,12 @@ class MockFoo : public Foo {
                       action_n));
 ```
 
+The return value of the last action **must** match the return type of the mocked
+method. In the example above, `action_n` could be `Return(true)`, or a lambda
+that returns a `bool`, but not `SaveArg`, which returns `void`. Otherwise the
+signature of `DoAll` would not match the signature expected by `WillOnce`, which
+is the signature of the mocked method, and it wouldn't compile.
+
 ### Verifying Complex Arguments {#SaveArgVerify}
 
 If you want to verify that a method is called with a particular argument but the
@@ -2259,7 +2271,7 @@ TEST_F(FooTest, Test) {
 
   EXPECT_CALL(foo, DoThis(2))
       .WillOnce(Invoke(NewPermanentCallback(SignOfSum, 5)));
-  EXPECT_EQ('+', foo.DoThis(2));  // Invokes SignOfSum(5, 2).
+  EXPECT_EQ(foo.DoThis(2), '+');  // Invokes SignOfSum(5, 2).
 }
 ```
 
@@ -2635,8 +2647,8 @@ action will exhibit different behaviors. Example:
       .WillRepeatedly(IncrementCounter(0));
   foo.DoThis();  // Returns 1.
   foo.DoThis();  // Returns 2.
-  foo.DoThat();  // Returns 1 - Blah() uses a different
-                 // counter than Bar()'s.
+  foo.DoThat();  // Returns 1 - DoThat() uses a different
+                 // counter than DoThis()'s.
 ```
 
 versus
@@ -2766,36 +2778,33 @@ returns a null `unique_ptr`, that’s what you’ll get if you don’t specify a
 action:
 
 ```cpp
+using ::testing::IsNull;
+...
   // Use the default action.
   EXPECT_CALL(mock_buzzer_, MakeBuzz("hello"));
 
   // Triggers the previous EXPECT_CALL.
-  EXPECT_EQ(nullptr, mock_buzzer_.MakeBuzz("hello"));
+  EXPECT_THAT(mock_buzzer_.MakeBuzz("hello"), IsNull());
 ```
 
 If you are not happy with the default action, you can tweak it as usual; see
 [Setting Default Actions](#OnCall).
 
-If you just need to return a pre-defined move-only value, you can use the
-`Return(ByMove(...))` action:
+If you just need to return a move-only value, you can use it in combination with
+`WillOnce`. For example:
 
 ```cpp
-  // When this fires, the unique_ptr<> specified by ByMove(...) will
-  // be returned.
-  EXPECT_CALL(mock_buzzer_, MakeBuzz("world"))
-      .WillOnce(Return(ByMove(MakeUnique<Buzz>(AccessLevel::kInternal))));
-
-  EXPECT_NE(nullptr, mock_buzzer_.MakeBuzz("world"));
+  EXPECT_CALL(mock_buzzer_, MakeBuzz("hello"))
+      .WillOnce(Return(std::make_unique<Buzz>(AccessLevel::kInternal)));
+  EXPECT_NE(nullptr, mock_buzzer_.MakeBuzz("hello"));
 ```
 
-Note that `ByMove()` is essential here - if you drop it, the code won’t compile.
-
-Quiz time! What do you think will happen if a `Return(ByMove(...))` action is
-performed more than once (e.g. you write `...
-.WillRepeatedly(Return(ByMove(...)));`)? Come think of it, after the first time
-the action runs, the source value will be consumed (since it’s a move-only
-value), so the next time around, there’s no value to move from -- you’ll get a
-run-time error that `Return(ByMove(...))` can only be run once.
+Quiz time! What do you think will happen if a `Return` action is performed more
+than once (e.g. you write `... .WillRepeatedly(Return(std::move(...)));`)? Come
+think of it, after the first time the action runs, the source value will be
+consumed (since it’s a move-only value), so the next time around, there’s no
+value to move from -- you’ll get a run-time error that `Return(std::move(...))`
+can only be run once.
 
 If you need your mock method to do more than just moving a pre-defined value,
 remember that you can always use a lambda or a callable object, which can do
@@ -2804,7 +2813,7 @@ pretty much anything you want:
 ```cpp
   EXPECT_CALL(mock_buzzer_, MakeBuzz("x"))
       .WillRepeatedly([](StringPiece text) {
-        return MakeUnique<Buzz>(AccessLevel::kInternal);
+        return std::make_unique<Buzz>(AccessLevel::kInternal);
       });
 
   EXPECT_NE(nullptr, mock_buzzer_.MakeBuzz("x"));
@@ -2812,7 +2821,7 @@ pretty much anything you want:
 ```
 
 Every time this `EXPECT_CALL` fires, a new `unique_ptr<Buzz>` will be created
-and returned. You cannot do this with `Return(ByMove(...))`.
+and returned. You cannot do this with `Return(std::make_unique<...>(...))`.
 
 That covers returning move-only values; but how do we work with methods
 accepting move-only arguments? The answer is that they work normally, although
@@ -2823,7 +2832,7 @@ can always use `Return`, or a [lambda or functor](#FunctionsAsActions):
   using ::testing::Unused;
 
   EXPECT_CALL(mock_buzzer_, ShareBuzz(NotNull(), _)).WillOnce(Return(true));
-  EXPECT_TRUE(mock_buzzer_.ShareBuzz(MakeUnique<Buzz>(AccessLevel::kInternal)),
+  EXPECT_TRUE(mock_buzzer_.ShareBuzz(std::make_unique<Buzz>(AccessLevel::kInternal)),
               0);
 
   EXPECT_CALL(mock_buzzer_, ShareBuzz(_, _)).WillOnce(
@@ -2867,7 +2876,7 @@ method:
   // When one calls ShareBuzz() on the MockBuzzer like this, the call is
   // forwarded to DoShareBuzz(), which is mocked.  Therefore this statement
   // will trigger the above EXPECT_CALL.
-  mock_buzzer_.ShareBuzz(MakeUnique<Buzz>(AccessLevel::kInternal), 0);
+  mock_buzzer_.ShareBuzz(std::make_unique<Buzz>(AccessLevel::kInternal), 0);
 ```
 
 ### Making the Compilation Faster
@@ -3192,11 +3201,11 @@ You can unlock this power by running your test with the `--gmock_verbose=info`
 flag. For example, given the test program:
 
 ```cpp
-#include "gmock/gmock.h"
+#include <gmock/gmock.h>
 
-using testing::_;
-using testing::HasSubstr;
-using testing::Return;
+using ::testing::_;
+using ::testing::HasSubstr;
+using ::testing::Return;
 
 class MockFoo {
  public:
@@ -3304,7 +3313,7 @@ For convenience, we allow the description string to be empty (`""`), in which
 case gMock will use the sequence of words in the matcher name as the
 description.
 
-For example:
+#### Basic Example
 
 ```cpp
 MATCHER(IsDivisibleBy7, "") { return (arg % 7) == 0; }
@@ -3342,6 +3351,8 @@ If the above assertions fail, they will print something like:
 where the descriptions `"is divisible by 7"` and `"not (is divisible by 7)"` are
 automatically calculated from the matcher name `IsDivisibleBy7`.
 
+#### Adding Custom Failure Messages
+
 As you may have noticed, the auto-generated descriptions (especially those for
 the negation) may not be so great. You can always override them with a `string`
 expression of your own:
@@ -3375,21 +3386,48 @@ With this definition, the above assertion will give a better message:
     Actual: 27 (the remainder is 6)
 ```
 
+#### Using EXPECT_ Statements in Matchers
+
+You can also use `EXPECT_...` statements inside custom matcher definitions. In
+many cases, this allows you to write your matcher more concisely while still
+providing an informative error message. For example:
+
+```cpp
+MATCHER(IsDivisibleBy7, "") {
+  const auto remainder = arg % 7;
+  EXPECT_EQ(remainder, 0);
+  return true;
+}
+```
+
+If you write a test that includes the line `EXPECT_THAT(27, IsDivisibleBy7());`,
+you will get an error something like the following:
+
+```shell
+Expected equality of these values:
+  remainder
+    Which is: 6
+  0
+```
+
+#### `MatchAndExplain`
+
 You should let `MatchAndExplain()` print *any additional information* that can
 help a user understand the match result. Note that it should explain why the
 match succeeds in case of a success (unless it's obvious) - this is useful when
 the matcher is used inside `Not()`. There is no need to print the argument value
 itself, as gMock already prints it for you.
 
-{: .callout .note}
-NOTE: The type of the value being matched (`arg_type`) is determined by the
-context in which you use the matcher and is supplied to you by the compiler, so
-you don't need to worry about declaring it (nor can you). This allows the
-matcher to be polymorphic. For example, `IsDivisibleBy7()` can be used to match
-any type where the value of `(arg % 7) == 0` can be implicitly converted to a
-`bool`. In the `Bar(IsDivisibleBy7())` example above, if method `Bar()` takes an
-`int`, `arg_type` will be `int`; if it takes an `unsigned long`, `arg_type` will
-be `unsigned long`; and so on.
+#### Argument Types
+
+The type of the value being matched (`arg_type`) is determined by the context in
+which you use the matcher and is supplied to you by the compiler, so you don't
+need to worry about declaring it (nor can you). This allows the matcher to be
+polymorphic. For example, `IsDivisibleBy7()` can be used to match any type where
+the value of `(arg % 7) == 0` can be implicitly converted to a `bool`. In the
+`Bar(IsDivisibleBy7())` example above, if method `Bar()` takes an `int`,
+`arg_type` will be `int`; if it takes an `unsigned long`, `arg_type` will be
+`unsigned long`; and so on.
 
 ### Writing New Parameterized Matchers Quickly
 
@@ -3530,10 +3568,15 @@ just based on the number of parameters).
 
 ### Writing New Monomorphic Matchers
 
-A matcher of argument type `T` implements the matcher interface for `T` and does
-two things: it tests whether a value of type `T` matches the matcher, and can
-describe what kind of values it matches. The latter ability is used for
-generating readable error messages when expectations are violated.
+A matcher of type `testing::Matcher<T>` implements the matcher interface for `T`
+and does two things: it tests whether a value of type `T` matches the matcher,
+and can describe what kind of values it matches. The latter ability is used for
+generating readable error messages when expectations are violated. Some matchers
+can even explain why it matches or doesn't match a certain value, which can be
+helpful when the reason isn't obvious.
+
+Because a matcher of type `testing::Matcher<T>` for a particular type `T` can
+only be used to match a value of type `T`, we call it "monomorphic."
 
 A matcher of `T` must declare a typedef like:
 
@@ -3625,8 +3668,16 @@ instead of `std::ostream*`.
 
 ### Writing New Polymorphic Matchers
 
-Expanding what we learned above to *polymorphic* matchers is now just as simple
-as adding templates in the right place.
+Unlike a monomorphic matcher, which can only be used to match a value of a
+particular type, a *polymorphic* matcher is one that can be used to match values
+of multiple types. For example, `Eq(5)` is a polymorhpic matcher as it can be
+used to match an `int`, a `double`, a `float`, and so on. You should think of a
+polymorphic matcher as a *matcher factory* as opposed to a
+`testing::Matcher<SomeType>` - itself is not an actual matcher, but can be
+implicitly converted to a `testing::Matcher<SomeType>` depending on the context.
+
+Expanding what we learned above to polymorphic matchers is now as simple as
+adding templates in the right place.
 
 ```cpp
 
@@ -3752,6 +3803,26 @@ virtual.
 Like in a monomorphic matcher, you may explain the match result by streaming
 additional information to the `listener` argument in `MatchAndExplain()`.
 
+### Implementing Composite Matchers {#CompositeMatchers}
+
+Sometimes we want to define a matcher that takes other matchers as parameters.
+For example, `DistanceFrom(target, m)` is a polymorphic matcher that takes a
+matcher `m` as a parameter. It tests that the distance from `target` to the
+value being matched satisfies sub-matcher `m`.
+
+If you are implementing such a composite matcher, you'll need to generate the
+description of the matcher based on the description(s) of its sub-matcher(s).
+You can see the implementation of `DistanceFrom()` in
+`googlemock/include/gmock/gmock-matchers.h` for an example. In particular, pay
+attention to `DistanceFromMatcherImpl`. Notice that it stores the sub-matcher as
+a `const Matcher<const Distance&> distance_matcher_` instead of a polymorphic
+matcher - this allows it to call `distance_matcher_.DescribeTo(os)` to describe
+the sub-matcher. If the sub-matcher is stored as a polymorphic matcher instead,
+it would not be possible to get its description as in general polymorphic
+matchers don't know how to describe themselves - they are matcher factories
+instead of actual matchers; only after being converted to `Matcher<SomeType>`
+can they be described.
+
 ### Writing New Cardinalities
 
 A cardinality is used in `Times()` to tell gMock how many times you expect a
@@ -3817,15 +3888,15 @@ If the built-in actions don't work for you, you can easily define your own one.
 All you need is a call operator with a signature compatible with the mocked
 function. So you can use a lambda:
 
-```
+```cpp
 MockFunction<int(int)> mock;
 EXPECT_CALL(mock, Call).WillOnce([](const int input) { return input * 7; });
-EXPECT_EQ(14, mock.AsStdFunction()(2));
+EXPECT_EQ(mock.AsStdFunction()(2), 14);
 ```
 
 Or a struct with a call operator (even a templated one):
 
-```
+```cpp
 struct MultiplyBy {
   template <typename T>
   T operator()(T arg) { return arg * multiplier; }
@@ -3840,16 +3911,16 @@ struct MultiplyBy {
 It's also fine for the callable to take no arguments, ignoring the arguments
 supplied to the mock function:
 
-```
+```cpp
 MockFunction<int(int)> mock;
 EXPECT_CALL(mock, Call).WillOnce([] { return 17; });
-EXPECT_EQ(17, mock.AsStdFunction()(0));
+EXPECT_EQ(mock.AsStdFunction()(0), 17);
 ```
 
 When used with `WillOnce`, the callable can assume it will be called at most
 once and is allowed to be a move-only type:
 
-```
+```cpp
 // An action that contains move-only types and has an &&-qualified operator,
 // demanding in the type system that it be called at most once. This can be
 // used with WillOnce, but the compiler will reject it if handed to
@@ -4293,7 +4364,7 @@ particular type than to dump the bytes.
 ### Mock std::function {#MockFunction}
 
 `std::function` is a general function type introduced in C++11. It is a
-preferred way of passing callbacks to new interfaces. Functions are copiable,
+preferred way of passing callbacks to new interfaces. Functions are copyable,
 and are not usually passed around by pointer, which makes them tricky to mock.
 But fear not - `MockFunction` can help you with that.
 

docs/gmock_for_dummies.md

@@ -90,14 +90,14 @@ gMock is bundled with googletest.
 ## A Case for Mock Turtles
 
 Let's look at an example. Suppose you are developing a graphics program that
-relies on a [LOGO](http://en.wikipedia.org/wiki/Logo_programming_language)-like
+relies on a [LOGO](https://en.wikipedia.org/wiki/Logo_programming_language)-like
 API for drawing. How would you test that it does the right thing? Well, you can
 run it and compare the screen with a golden screen snapshot, but let's admit it:
 tests like this are expensive to run and fragile (What if you just upgraded to a
 shiny new graphics card that has better anti-aliasing? Suddenly you have to
 update all your golden images.). It would be too painful if all your tests are
 like this. Fortunately, you learned about
-[Dependency Injection](http://en.wikipedia.org/wiki/Dependency_injection) and know the right thing
+[Dependency Injection](https://en.wikipedia.org/wiki/Dependency_injection) and know the right thing
 to do: instead of having your application talk to the system API directly, wrap
 the API in an interface (say, `Turtle`) and code to that interface:
 
@@ -164,7 +164,7 @@ follow:
 After the process, you should have something like:
 
 ```cpp
-#include "gmock/gmock.h"  // Brings in gMock.
+#include <gmock/gmock.h>  // Brings in gMock.
 
 class MockTurtle : public Turtle {
  public:
@@ -224,8 +224,8 @@ Here's an example:
 
 ```cpp
 #include "path/to/mock-turtle.h"
-#include "gmock/gmock.h"
-#include "gtest/gtest.h"
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
 
 using ::testing::AtLeast;                         // #1
 
@@ -261,6 +261,8 @@ happen. Therefore it's a good idea to turn on the heap checker in your tests
 when you allocate mocks on the heap. You get that automatically if you use the
 `gtest_main` library already.
 
+###### Expectation Ordering
+
 **Important note:** gMock requires expectations to be set **before** the mock
 functions are called, otherwise the behavior is **undefined**. Do not alternate
 between calls to `EXPECT_CALL()` and calls to the mock functions, and do not set

docs/pkgconfig.md

@@ -19,19 +19,15 @@ examples here we assume you want to compile the sample
 Using `pkg-config` in CMake is fairly easy:
 
 ```cmake
-cmake_minimum_required(VERSION 3.0)
-
-cmake_policy(SET CMP0048 NEW)
-project(my_gtest_pkgconfig VERSION 0.0.1 LANGUAGES CXX)
-
 find_package(PkgConfig)
 pkg_search_module(GTEST REQUIRED gtest_main)
 
-add_executable(testapp samples/sample3_unittest.cc)
-target_link_libraries(testapp ${GTEST_LDFLAGS})
-target_compile_options(testapp PUBLIC ${GTEST_CFLAGS})
+add_executable(testapp)
+target_sources(testapp PRIVATE samples/sample3_unittest.cc)
+target_link_libraries(testapp PRIVATE ${GTEST_LDFLAGS})
+target_compile_options(testapp PRIVATE ${GTEST_CFLAGS})
 
-include(CTest)
+enable_testing()
 add_test(first_and_only_test testapp)
 ```
 

docs/platforms.md

@@ -1,35 +1,8 @@
 # Supported Platforms
 
-GoogleTest requires a codebase and compiler compliant with the C++11 standard or
-newer.
-
-The GoogleTest code is officially supported on the following platforms.
-Operating systems or tools not listed below are community-supported. For
-community-supported platforms, patches that do not complicate the code may be
-considered.
-
-If you notice any problems on your platform, please file an issue on the
-[GoogleTest GitHub Issue Tracker](https://github.com/google/googletest/issues).
-Pull requests containing fixes are welcome!
-
-### Operating systems
-
-*   Linux
-*   macOS
-*   Windows
-
-### Compilers
-
-*   gcc 5.0+
-*   clang 5.0+
-*   MSVC 2015+
-
-**macOS users:** Xcode 9.3+ provides clang 5.0+.
-
-### Build systems
-
-*   [Bazel](https://bazel.build/)
-*   [CMake](https://cmake.org/)
-
-Bazel is the build system used by the team internally and in tests. CMake is
-supported on a best-effort basis and by the community.
+GoogleTest follows Google's
+[Foundational C++ Support Policy](https://opensource.google/documentation/policies/cplusplus-support).
+See
+[this table](https://github.com/google/oss-policies-info/blob/main/foundational-cxx-support-matrix.md)
+for a list of currently supported versions compilers, platforms, and build
+tools.

docs/primer.md

@@ -1,84 +1,84 @@
-# Googletest Primer
+# GoogleTest Primer
 
-## Introduction: Why googletest?
+## Introduction: Why GoogleTest?
 
-*googletest* helps you write better C++ tests.
+*GoogleTest* helps you write better C++ tests.
 
-googletest is a testing framework developed by the Testing Technology team with
+GoogleTest is a testing framework developed by the Testing Technology team with
 Google's specific requirements and constraints in mind. Whether you work on
-Linux, Windows, or a Mac, if you write C++ code, googletest can help you. And it
+Linux, Windows, or a Mac, if you write C++ code, GoogleTest can help you. And it
 supports *any* kind of tests, not just unit tests.
 
-So what makes a good test, and how does googletest fit in? We believe:
+So what makes a good test, and how does GoogleTest fit in? We believe:
 
 1.  Tests should be *independent* and *repeatable*. It's a pain to debug a test
-    that succeeds or fails as a result of other tests. googletest isolates the
+    that succeeds or fails as a result of other tests. GoogleTest isolates the
     tests by running each of them on a different object. When a test fails,
-    googletest allows you to run it in isolation for quick debugging.
+    GoogleTest allows you to run it in isolation for quick debugging.
 2.  Tests should be well *organized* and reflect the structure of the tested
-    code. googletest groups related tests into test suites that can share data
+    code. GoogleTest groups related tests into test suites that can share data
     and subroutines. This common pattern is easy to recognize and makes tests
     easy to maintain. Such consistency is especially helpful when people switch
     projects and start to work on a new code base.
 3.  Tests should be *portable* and *reusable*. Google has a lot of code that is
-    platform-neutral; its tests should also be platform-neutral. googletest
+    platform-neutral; its tests should also be platform-neutral. GoogleTest
     works on different OSes, with different compilers, with or without
-    exceptions, so googletest tests can work with a variety of configurations.
+    exceptions, so GoogleTest tests can work with a variety of configurations.
 4.  When tests fail, they should provide as much *information* about the problem
-    as possible. googletest doesn't stop at the first test failure. Instead, it
+    as possible. GoogleTest doesn't stop at the first test failure. Instead, it
     only stops the current test and continues with the next. You can also set up
     tests that report non-fatal failures after which the current test continues.
     Thus, you can detect and fix multiple bugs in a single run-edit-compile
     cycle.
 5.  The testing framework should liberate test writers from housekeeping chores
-    and let them focus on the test *content*. googletest automatically keeps
+    and let them focus on the test *content*. GoogleTest automatically keeps
     track of all tests defined, and doesn't require the user to enumerate them
     in order to run them.
-6.  Tests should be *fast*. With googletest, you can reuse shared resources
+6.  Tests should be *fast*. With GoogleTest, you can reuse shared resources
     across tests and pay for the set-up/tear-down only once, without making
     tests depend on each other.
 
-Since googletest is based on the popular xUnit architecture, you'll feel right
+Since GoogleTest is based on the popular xUnit architecture, you'll feel right
 at home if you've used JUnit or PyUnit before. If not, it will take you about 10
 minutes to learn the basics and get started. So let's go!
 
-## Beware of the nomenclature
+## Beware of the Nomenclature
 
 {: .callout .note}
-_Note:_ There might be some confusion arising from different definitions of the
-terms _Test_, _Test Case_ and _Test Suite_, so beware of misunderstanding these.
+*Note:* There might be some confusion arising from different definitions of the
+terms *Test*, *Test Case* and *Test Suite*, so beware of misunderstanding these.
 
-Historically, googletest started to use the term _Test Case_ for grouping
+Historically, GoogleTest started to use the term *Test Case* for grouping
 related tests, whereas current publications, including International Software
-Testing Qualifications Board ([ISTQB](http://www.istqb.org/)) materials and
+Testing Qualifications Board ([ISTQB](https://www.istqb.org/)) materials and
 various textbooks on software quality, use the term
-_[Test Suite][istqb test suite]_ for this.
+*[Test Suite][istqb test suite]* for this.
 
-The related term _Test_, as it is used in googletest, corresponds to the term
-_[Test Case][istqb test case]_ of ISTQB and others.
+The related term *Test*, as it is used in GoogleTest, corresponds to the term
+*[Test Case][istqb test case]* of ISTQB and others.
 
-The term _Test_ is commonly of broad enough sense, including ISTQB's definition
-of _Test Case_, so it's not much of a problem here. But the term _Test Case_ as
+The term *Test* is commonly of broad enough sense, including ISTQB's definition
+of *Test Case*, so it's not much of a problem here. But the term *Test Case* as
 was used in Google Test is of contradictory sense and thus confusing.
 
-googletest recently started replacing the term _Test Case_ with _Test Suite_.
+GoogleTest recently started replacing the term *Test Case* with *Test Suite*.
 The preferred API is *TestSuite*. The older TestCase API is being slowly
 deprecated and refactored away.
 
 So please be aware of the different definitions of the terms:
 
 
-Meaning                                                                              | googletest Term         | [ISTQB](http://www.istqb.org/) Term
+Meaning                                                                              | GoogleTest Term         | [ISTQB](https://www.istqb.org/) Term
 :----------------------------------------------------------------------------------- | :---------------------- | :----------------------------------
 Exercise a particular program path with specific input values and verify the results | [TEST()](#simple-tests) | [Test Case][istqb test case]
 
 
-[istqb test case]: http://glossary.istqb.org/en/search/test%20case
-[istqb test suite]: http://glossary.istqb.org/en/search/test%20suite
+[istqb test case]: https://glossary.istqb.org/en_US/term/test-case
+[istqb test suite]: https://glossary.istqb.org/en_US/term/test-suite
 
 ## Basic Concepts
 
-When using googletest, you start by writing *assertions*, which are statements
+When using GoogleTest, you start by writing *assertions*, which are statements
 that check whether a condition is true. An assertion's result can be *success*,
 *nonfatal failure*, or *fatal failure*. If a fatal failure occurs, it aborts the
 current function; otherwise the program continues normally.
@@ -98,11 +98,11 @@ assertion level and building up to tests and test suites.
 
 ## Assertions
 
-googletest assertions are macros that resemble function calls. You test a class
+GoogleTest assertions are macros that resemble function calls. You test a class
 or function by making assertions about its behavior. When an assertion fails,
-googletest prints the assertion's source file and line number location, along
+GoogleTest prints the assertion's source file and line number location, along
 with a failure message. You may also supply a custom failure message which will
-be appended to googletest's message.
+be appended to GoogleTest's message.
 
 The assertions come in pairs that test the same thing but have different effects
 on the current function. `ASSERT_*` versions generate fatal failures when they
@@ -149,7 +149,7 @@ To create a test:
 1.  Use the `TEST()` macro to define and name a test function. These are
     ordinary C++ functions that don't return a value.
 2.  In this function, along with any valid C++ statements you want to include,
-    use the various googletest assertions to check values.
+    use the various GoogleTest assertions to check values.
 3.  The test's result is determined by the assertions; if any assertion in the
     test fails (either fatally or non-fatally), or if the test crashes, the
     entire test fails. Otherwise, it succeeds.
@@ -190,7 +190,7 @@ TEST(FactorialTest, HandlesPositiveInput) {
 }
 ```
 
-googletest groups the test results by test suites, so logically related tests
+GoogleTest groups the test results by test suites, so logically related tests
 should be in the same test suite; in other words, the first argument to their
 `TEST()` should be the same. In the above example, we have two tests,
 `HandlesZeroInput` and `HandlesPositiveInput`, that belong to the same test
@@ -210,7 +210,7 @@ objects for several different tests.
 
 To create a fixture:
 
-1.  Derive a class from `::testing::Test` . Start its body with `protected:`, as
+1.  Derive a class from `testing::Test` . Start its body with `protected:`, as
     we'll want to access fixture members from sub-classes.
 2.  Inside the class, declare any objects you plan to use.
 3.  If necessary, write a default constructor or `SetUp()` function to prepare
@@ -227,14 +227,14 @@ When using a fixture, use `TEST_F()` instead of `TEST()` as it allows you to
 access objects and subroutines in the test fixture:
 
 ```c++
-TEST_F(TestFixtureName, TestName) {
+TEST_F(TestFixtureClassName, TestName) {
   ... test body ...
 }
 ```
 
-Like `TEST()`, the first argument is the test suite name, but for `TEST_F()`
-this must be the name of the test fixture class. You've probably guessed: `_F`
-is for fixture.
+Unlike `TEST()`, in `TEST_F()` the first argument must be the name of the test
+fixture class. (`_F` stands for "Fixture"). No test suite name is specified for
+this macro.
 
 Unfortunately, the C++ macro system does not allow us to create a single macro
 that can handle both types of tests. Using the wrong macro causes a compiler
@@ -244,12 +244,12 @@ Also, you must first define a test fixture class before using it in a
 `TEST_F()`, or you'll get the compiler error "`virtual outside class
 declaration`".
 
-For each test defined with `TEST_F()`, googletest will create a *fresh* test
+For each test defined with `TEST_F()`, GoogleTest will create a *fresh* test
 fixture at runtime, immediately initialize it via `SetUp()`, run the test, clean
 up by calling `TearDown()`, and then delete the test fixture. Note that
 different tests in the same test suite have different test fixture objects, and
-googletest always deletes a test fixture before it creates the next one.
-googletest does **not** reuse the same test fixture for multiple tests. Any
+GoogleTest always deletes a test fixture before it creates the next one.
+GoogleTest does **not** reuse the same test fixture for multiple tests. Any
 changes one test makes to the fixture do not affect other tests.
 
 As an example, let's write tests for a FIFO queue class named `Queue`, which has
@@ -271,15 +271,16 @@ First, define a fixture class. By convention, you should give it the name
 `FooTest` where `Foo` is the class being tested.
 
 ```c++
-class QueueTest : public ::testing::Test {
+class QueueTest : public testing::Test {
  protected:
-  void SetUp() override {
+  QueueTest() {
+     // q0_ remains empty
      q1_.Enqueue(1);
      q2_.Enqueue(2);
      q2_.Enqueue(3);
   }
 
-  // void TearDown() override {}
+  // ~QueueTest() override = default;
 
   Queue<int> q0_;
   Queue<int> q1_;
@@ -287,8 +288,9 @@ class QueueTest : public ::testing::Test {
 };
 ```
 
-In this case, `TearDown()` is not needed since we don't have to clean up after
-each test, other than what's already done by the destructor.
+In this case, we don't need to define a destructor or a `TearDown()` method,
+because the implicit destructor generated by the compiler will perform all of
+the necessary cleanup.
 
 Now we'll write tests using `TEST_F()` and this fixture.
 
@@ -324,19 +326,17 @@ would lead to a segfault when `n` is `NULL`.
 
 When these tests run, the following happens:
 
-1.  googletest constructs a `QueueTest` object (let's call it `t1`).
-2.  `t1.SetUp()` initializes `t1`.
-3.  The first test (`IsEmptyInitially`) runs on `t1`.
-4.  `t1.TearDown()` cleans up after the test finishes.
-5.  `t1` is destructed.
-6.  The above steps are repeated on another `QueueTest` object, this time
+1.  GoogleTest constructs a `QueueTest` object (let's call it `t1`).
+2.  The first test (`IsEmptyInitially`) runs on `t1`.
+3.  `t1` is destructed.
+4.  The above steps are repeated on another `QueueTest` object, this time
     running the `DequeueWorks` test.
 
 **Availability**: Linux, Windows, Mac.
 
 ## Invoking the Tests
 
-`TEST()` and `TEST_F()` implicitly register their tests with googletest. So,
+`TEST()` and `TEST_F()` implicitly register their tests with GoogleTest. So,
 unlike with many other C++ testing frameworks, you don't have to re-list all
 your defined tests in order to run them.
 
@@ -347,7 +347,7 @@ test suites, or even different source files.
 
 When invoked, the `RUN_ALL_TESTS()` macro:
 
-*   Saves the state of all googletest flags.
+*   Saves the state of all GoogleTest flags.
 
 *   Creates a test fixture object for the first test.
 
@@ -359,7 +359,7 @@ When invoked, the `RUN_ALL_TESTS()` macro:
 
 *   Deletes the fixture.
 
-*   Restores the state of all googletest flags.
+*   Restores the state of all GoogleTest flags.
 
 *   Repeats the above steps for the next test, until all tests have run.
 
@@ -373,14 +373,14 @@ If a fatal failure happens the subsequent steps will be skipped.
 > return the value of `RUN_ALL_TESTS()`.
 >
 > Also, you should call `RUN_ALL_TESTS()` only **once**. Calling it more than
-> once conflicts with some advanced googletest features (e.g., thread-safe
+> once conflicts with some advanced GoogleTest features (e.g., thread-safe
 > [death tests](advanced.md#death-tests)) and thus is not supported.
 
 **Availability**: Linux, Windows, Mac.
 
 ## Writing the main() Function
 
-Most users should _not_ need to write their own `main` function and instead link
+Most users should *not* need to write their own `main` function and instead link
 with `gtest_main` (as opposed to with `gtest`), which defines a suitable entry
 point. See the end of this section for details. The remainder of this section
 should only apply when you need to do something custom before the tests run that
@@ -394,14 +394,14 @@ You can start from this boilerplate:
 ```c++
 #include "this/package/foo.h"
 
-#include "gtest/gtest.h"
+#include <gtest/gtest.h>
 
 namespace my {
 namespace project {
 namespace {
 
 // The fixture for testing class Foo.
-class FooTest : public ::testing::Test {
+class FooTest : public testing::Test {
  protected:
   // You can remove any or all of the following functions if their bodies would
   // be empty.
@@ -449,14 +449,14 @@ TEST_F(FooTest, DoesXyz) {
 }  // namespace my
 
 int main(int argc, char **argv) {
-  ::testing::InitGoogleTest(&argc, argv);
+  testing::InitGoogleTest(&argc, argv);
   return RUN_ALL_TESTS();
 }
 ```
 
-The `::testing::InitGoogleTest()` function parses the command line for
-googletest flags, and removes all recognized flags. This allows the user to
-control a test program's behavior via various flags, which we'll cover in the
+The `testing::InitGoogleTest()` function parses the command line for GoogleTest
+flags, and removes all recognized flags. This allows the user to control a test
+program's behavior via various flags, which we'll cover in the
 [AdvancedGuide](advanced.md). You **must** call this function before calling
 `RUN_ALL_TESTS()`, or the flags won't be properly initialized.
 
@@ -475,7 +475,7 @@ NOTE: `ParseGUnitFlags()` is deprecated in favor of `InitGoogleTest()`.
 
 *   Google Test is designed to be thread-safe. The implementation is thread-safe
     on systems where the `pthreads` library is available. It is currently
-    _unsafe_ to use Google Test assertions from two threads concurrently on
+    *unsafe* to use Google Test assertions from two threads concurrently on
     other systems (e.g. Windows). In most tests this is not an issue as usually
     the assertions are done in the main thread. If you want to help, you can
     volunteer to implement the necessary synchronization primitives in

docs/quickstart-bazel.md

@@ -9,19 +9,18 @@ we recommend this tutorial as a starting point.
 To complete this tutorial, you'll need:
 
 *   A compatible operating system (e.g. Linux, macOS, Windows).
-*   A compatible C++ compiler that supports at least C++11.
-*   [Bazel](https://bazel.build/), the preferred build system used by the
-    GoogleTest team.
+*   A compatible C++ compiler that supports at least C++17.
+*   [Bazel](https://bazel.build/) 7.0 or higher, the preferred build system used
+    by the GoogleTest team.
 
 See [Supported Platforms](platforms.md) for more information about platforms
 compatible with GoogleTest.
 
 If you don't already have Bazel installed, see the
-[Bazel installation guide](https://docs.bazel.build/versions/main/install.html).
+[Bazel installation guide](https://bazel.build/install).
 
-{: .callout .note}
-Note: The terminal commands in this tutorial show a Unix shell prompt, but the
-commands work on the Windows command line as well.
+{: .callout .note} Note: The terminal commands in this tutorial show a Unix
+shell prompt, but the commands work on the Windows command line as well.
 
 ## Set up a Bazel workspace
 
@@ -29,7 +28,7 @@ A
 [Bazel workspace](https://docs.bazel.build/versions/main/build-ref.html#workspace)
 is a directory on your filesystem that you use to manage source files for the
 software you want to build. Each workspace directory has a text file named
-`WORKSPACE` which may be empty, or may contain references to external
+`MODULE.bazel` which may be empty, or may contain references to external
 dependencies required to build the outputs.
 
 First, create a directory for your workspace:
@@ -38,30 +37,20 @@ First, create a directory for your workspace:
 $ mkdir my_workspace && cd my_workspace
 ```
 
-Next, you’ll create the `WORKSPACE` file to specify dependencies. A common and
-recommended way to depend on GoogleTest is to use a
-[Bazel external dependency](https://docs.bazel.build/versions/main/external.html)
-via the
-[`http_archive` rule](https://docs.bazel.build/versions/main/repo/http.html#http_archive).
-To do this, in the root directory of your workspace (`my_workspace/`), create a
-file named `WORKSPACE` with the following contents:
+Next, you’ll create the `MODULE.bazel` file to specify dependencies. As of Bazel
+7.0, the recommended way to consume GoogleTest is through the
+[Bazel Central Registry](https://registry.bazel.build/modules/googletest). To do
+this, create a `MODULE.bazel` file in the root directory of your Bazel workspace
+with the following content:
 
 ```
-load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+# MODULE.bazel
 
-http_archive(
-  name = "com_google_googletest",
-  urls = ["https://github.com/google/googletest/archive/609281088cfefc76f9d0ce82e1ff6c30cc3591e5.zip"],
-  strip_prefix = "googletest-609281088cfefc76f9d0ce82e1ff6c30cc3591e5",
-)
+# Choose the most recent version available at
+# https://registry.bazel.build/modules/googletest
+bazel_dep(name = "googletest", version = "1.17.0")
 ```
 
-The above configuration declares a dependency on GoogleTest which is downloaded
-as a ZIP archive from GitHub. In the above example,
-`609281088cfefc76f9d0ce82e1ff6c30cc3591e5` is the Git commit hash of the
-GoogleTest version to use; we recommend updating the hash often to point to the
-latest version.
-
 Now you're ready to build C++ code that uses GoogleTest.
 
 ## Create and run a binary
@@ -93,23 +82,33 @@ following contents:
 
 ```
 cc_test(
-  name = "hello_test",
-  size = "small",
-  srcs = ["hello_test.cc"],
-  deps = ["@com_google_googletest//:gtest_main"],
+    name = "hello_test",
+    size = "small",
+    srcs = ["hello_test.cc"],
+    deps = [
+        "@googletest//:gtest",
+        "@googletest//:gtest_main",
+    ],
 )
 ```
 
 This `cc_test` rule declares the C++ test binary you want to build, and links to
-GoogleTest (`//:gtest_main`) using the prefix you specified in the `WORKSPACE`
-file (`@com_google_googletest`). For more information about Bazel `BUILD` files,
-see the
+the GoogleTest library (`@googletest//:gtest"`) and the GoogleTest `main()`
+function (`@googletest//:gtest_main`). For more information about Bazel `BUILD`
+files, see the
 [Bazel C++ Tutorial](https://docs.bazel.build/versions/main/tutorial/cpp.html).
 
+{: .callout .note}
+NOTE: In the example below, we assume Clang or GCC and set `--cxxopt=-std=c++17`
+to ensure that GoogleTest is compiled as C++17 instead of the compiler's default
+setting. For MSVC, the equivalent would be `--cxxopt=/std:c++17`. See
+[Supported Platforms](platforms.md) for more details on supported language
+versions.
+
 Now you can build and run your test:
 
 <pre>
-<strong>my_workspace$ bazel test --test_output=all //:hello_test</strong>
+<strong>$ bazel test --cxxopt=-std=c++17 --test_output=all //:hello_test</strong>
 INFO: Analyzed target //:hello_test (26 packages loaded, 362 targets configured).
 INFO: Found 1 test target...
 INFO: From Testing //:hello_test:

docs/quickstart-cmake.md

@@ -10,7 +10,7 @@ this tutorial as a starting point. If your project uses Bazel, see the
 To complete this tutorial, you'll need:
 
 *   A compatible operating system (e.g. Linux, macOS, Windows).
-*   A compatible C++ compiler that supports at least C++11.
+*   A compatible C++ compiler that supports at least C++17.
 *   [CMake](https://cmake.org/) and a compatible build tool for building the
     project.
     *   Compatible build tools include
@@ -52,13 +52,14 @@ To do this, in your project directory (`my_project`), create a file named
 cmake_minimum_required(VERSION 3.14)
 project(my_project)
 
-# GoogleTest requires at least C++11
-set(CMAKE_CXX_STANDARD 11)
+# GoogleTest requires at least C++17
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 include(FetchContent)
 FetchContent_Declare(
   googletest
-  URL https://github.com/google/googletest/archive/609281088cfefc76f9d0ce82e1ff6c30cc3591e5.zip
+  URL https://github.com/google/googletest/archive/03597a01ee50ed33e9dfd640b249b4be3799d395.zip
 )
 # For Windows: Prevent overriding the parent project's compiler/linker settings
 set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
@@ -66,7 +67,7 @@ FetchContent_MakeAvailable(googletest)
 ```
 
 The above configuration declares a dependency on GoogleTest which is downloaded
-from GitHub. In the above example, `609281088cfefc76f9d0ce82e1ff6c30cc3591e5` is
+from GitHub. In the above example, `03597a01ee50ed33e9dfd640b249b4be3799d395` is
 the Git commit hash of the GoogleTest version to use; we recommend updating the
 hash often to point to the latest version.
 
@@ -108,7 +109,7 @@ add_executable(
 )
 target_link_libraries(
   hello_test
-  gtest_main
+  GTest::gtest_main
 )
 
 include(GoogleTest)

docs/reference/actions.md

@@ -24,7 +24,8 @@ provided by GoogleTest. All actions are defined in the `::testing` namespace.
 | :--------------------------------- | :-------------------------------------- |
 | `Assign(&variable, value)` | Assign `value` to variable. |
 | `DeleteArg<N>()` | Delete the `N`-th (0-based) argument, which must be a pointer. |
-| `SaveArg<N>(pointer)` | Save the `N`-th (0-based) argument to `*pointer`. |
+| `SaveArg<N>(pointer)` | Save the `N`-th (0-based) argument to `*pointer` by copy-assignment. |
+| `SaveArgByMove<N>(pointer)` | Save the `N`-th (0-based) argument to `*pointer` by move-assignment. |
 | `SaveArgPointee<N>(pointer)` | Save the value pointed to by the `N`-th (0-based) argument to `*pointer`. |
 | `SetArgReferee<N>(value)` | Assign `value` to the variable referenced by the `N`-th (0-based) argument. |
 | `SetArgPointee<N>(value)` | Assign `value` to the variable pointed by the `N`-th (0-based) argument. |
@@ -47,8 +48,8 @@ functor, or lambda.
 | `InvokeWithoutArgs(object_pointer, &class::method)` | Invoke the method on the object, which takes no arguments. |
 | `InvokeArgument<N>(arg1, arg2, ..., argk)` | Invoke the mock function's `N`-th (0-based) argument, which must be a function or a functor, with the `k` arguments. |
 
-The return value of the invoked function is used as the return value of the
-action.
+The return value of the invoked function (except `InvokeArgument`) is used as
+the return value of the action.
 
 When defining a callable to be used with `Invoke*()`, you can declare any unused
 parameters as `Unused`:

docs/reference/assertions.md

@@ -1,7 +1,7 @@
 # Assertions Reference
 
 This page lists the assertion macros provided by GoogleTest for verifying code
-behavior. To use them, include the header `gtest/gtest.h`.
+behavior. To use them, add `#include <gtest/gtest.h>`.
 
 The majority of the macros listed below come as a pair with an `EXPECT_` variant
 and an `ASSERT_` variant. Upon failure, `EXPECT_` macros generate nonfatal
@@ -88,7 +88,7 @@ For example, the following code verifies that the string `value1` starts with
 10:
 
 ```cpp
-#include "gmock/gmock.h"
+#include <gmock/gmock.h>
 
 using ::testing::AllOf;
 using ::testing::Gt;
@@ -276,7 +276,8 @@ Units in the Last Place (ULPs). To learn more about ULPs, see the article
 `ASSERT_FLOAT_EQ(`*`val1`*`,`*`val2`*`)`
 
 Verifies that the two `float` values *`val1`* and *`val2`* are approximately
-equal, to within 4 ULPs from each other.
+equal, to within 4 ULPs from each other. Infinity and the largest finite float
+value are considered to be one ULP apart.
 
 ### EXPECT_DOUBLE_EQ {#EXPECT_DOUBLE_EQ}
 
@@ -284,7 +285,8 @@ equal, to within 4 ULPs from each other.
 `ASSERT_DOUBLE_EQ(`*`val1`*`,`*`val2`*`)`
 
 Verifies that the two `double` values *`val1`* and *`val2`* are approximately
-equal, to within 4 ULPs from each other.
+equal, to within 4 ULPs from each other. Infinity and the largest finite double
+value are considered to be one ULP apart.
 
 ### EXPECT_NEAR {#EXPECT_NEAR}
 
@@ -294,6 +296,11 @@ equal, to within 4 ULPs from each other.
 Verifies that the difference between *`val1`* and *`val2`* does not exceed the
 absolute error bound *`abs_error`*.
 
+If *`val`* and *`val2`* are both infinity of the same sign, the difference is
+considered to be 0. Otherwise, if either value is infinity, the difference is
+considered to be infinity. All non-NaN values (including infinity) are
+considered to not exceed an *`abs_error`* of infinity.
+
 ## Exception Assertions {#exceptions}
 
 The following assertions verify that a piece of code throws, or does not throw,
@@ -515,7 +522,7 @@ Verifies that *`expression`* is a success `HRESULT`.
 ### EXPECT_HRESULT_FAILED {#EXPECT_HRESULT_FAILED}
 
 `EXPECT_HRESULT_FAILED(`*`expression`*`)` \
-`EXPECT_HRESULT_FAILED(`*`expression`*`)`
+`ASSERT_HRESULT_FAILED(`*`expression`*`)`
 
 Verifies that *`expression`* is a failure `HRESULT`.
 

docs/reference/matchers.md

@@ -42,11 +42,14 @@ Matcher                     | Description
 | `Lt(value)`            | `argument < value`                                  |
 | `Ne(value)`            | `argument != value`                                 |
 | `IsFalse()`            | `argument` evaluates to `false` in a Boolean context. |
+| `DistanceFrom(target, m)` | The distance between `argument` and `target` (computed by `abs(argument - target)`) matches `m`. |
+| `DistanceFrom(target, get_distance, m)` | The distance between `argument` and `target` (computed by `get_distance(argument, target)`) matches `m`. |
 | `IsTrue()`             | `argument` evaluates to `true` in a Boolean context. |
 | `IsNull()`             | `argument` is a `NULL` pointer (raw or smart).      |
 | `NotNull()`            | `argument` is a non-null pointer (raw or smart).    |
 | `Optional(m)`          | `argument` is `optional<>` that contains a value matching `m`. (For testing whether an `optional<>` is set, check for equality with `nullopt`. You may need to use `Eq(nullopt)` if the inner type doesn't have `==`.)|
 | `VariantWith<T>(m)`    | `argument` is `variant<>` that holds the alternative of type T with a value matching `m`. |
+| `AnyWith<T>(m)`        | `argument` is `any<>` that holds a value of type T with a value matching `m`. |
 | `Ref(variable)`        | `argument` is a reference to `variable`.            |
 | `TypedEq<type>(value)` | `argument` has type `type` and is equal to `value`. You may need to use this instead of `Eq(value)` when the mock function is overloaded. |
 
@@ -102,13 +105,40 @@ The `argument` can be either a C string or a C++ string object:
 | `StrCaseNe(string)`      | `argument` is not equal to `string`, ignoring case. |
 | `StrEq(string)`          | `argument` is equal to `string`.                  |
 | `StrNe(string)`          | `argument` is not equal to `string`.              |
-| `WhenBase64Unescaped(m)` | `argument` is a base-64 escaped string whose unescaped string matches `m`. |
+| `WhenBase64Unescaped(m)` | `argument` is a base-64 escaped string whose unescaped string matches `m`.  The web-safe format from [RFC 4648](https://www.rfc-editor.org/rfc/rfc4648#section-5) is supported. |
 
 `ContainsRegex()` and `MatchesRegex()` take ownership of the `RE` object. They
 use the regular expression syntax defined
 [here](../advanced.md#regular-expression-syntax). All of these matchers, except
 `ContainsRegex()` and `MatchesRegex()` work for wide strings as well.
 
+## Exception Matchers
+
+| Matcher                                   | Description                      |
+| :---------------------------------------- | :------------------------------- |
+| `Throws<E>()` | The `argument` is a callable object that, when called, throws an exception of the expected type `E`. |
+| `Throws<E>(m)` | The `argument` is a callable object that, when called, throws an exception of type `E` that satisfies the matcher `m`. |
+| `ThrowsMessage<E>(m)` | The `argument` is a callable object that, when called, throws an exception of type `E` with a message that satisfies the matcher `m`. |
+
+Examples:
+
+```cpp
+auto argument = [] { throw std::runtime_error("error msg"); };
+
+// Checks if the lambda throws a `std::runtime_error`.
+EXPECT_THAT(argument, Throws<std::runtime_error>());
+
+// Checks if the lambda throws a `std::runtime_error` with a specific message
+// that matches "error msg".
+EXPECT_THAT(argument,
+            Throws<std::runtime_error>(Property(&std::runtime_error::what,
+                                                Eq("error msg"))));
+
+// Checks if the lambda throws a `std::runtime_error` with a message that
+// contains "msg".
+EXPECT_THAT(argument, ThrowsMessage<std::runtime_error>(HasSubstr("msg")));
+```
+
 ## Container Matchers
 
 Most STL-style containers support `==`, so you can use `Eq(expected_container)`
@@ -171,6 +201,11 @@ messages, you can use:
 | `Property(&class::property, m)` | `argument.property()` (or `argument->property()` when `argument` is a plain pointer) matches matcher `m`, where `argument` is an object of type _class_. The method `property()` must take no argument and be declared as `const`. |
 | `Property(property_name, &class::property, m)` | The same as the two-parameter version, but provides a better error message.
 
+{: .callout .warning}
+Warning: Don't use `Property()` against member functions that you do not own,
+because taking addresses of functions is fragile and generally not part of the
+contract of the function.
+
 **Notes:**
 
 *   You can use `FieldsAre()` to match any type that supports structured
@@ -189,10 +224,6 @@ messages, you can use:
     EXPECT_THAT(s, FieldsAre(42, "aloha"));
     ```
 
-*   Don't use `Property()` against member functions that you do not own, because
-    taking addresses of functions is fragile and generally not part of the
-    contract of the function.
-
 ## Matching the Result of a Function, Functor, or Callback
 
 | Matcher          | Description                                       |
@@ -288,3 +319,15 @@ which must be a permanent callback.
       return ExplainMatchResult(matcher, arg.nested().property(), result_listener);
     }
     ```
+
+5.  You can use `DescribeMatcher<>` to describe another matcher. For example:
+
+    ```cpp
+    MATCHER_P(XAndYThat, matcher,
+              "X that " + DescribeMatcher<int>(matcher, negation) +
+                  (negation ? " or" : " and") + " Y that " +
+                  DescribeMatcher<double>(matcher, negation)) {
+      return ExplainMatchResult(matcher, arg.x(), result_listener) &&
+             ExplainMatchResult(matcher, arg.y(), result_listener);
+    }
+    ```

docs/reference/mocking.md

@@ -1,8 +1,7 @@
 # Mocking Reference
 
 This page lists the facilities provided by GoogleTest for creating and working
-with mock objects. To use them, include the header
-`gmock/gmock.h`.
+with mock objects. To use them, add `#include <gmock/gmock.h>`.
 
 ## Macros {#macros}
 

docs/reference/testing.md

@@ -3,7 +3,7 @@
 <!--* toc_depth: 3 *-->
 
 This page lists the facilities provided by GoogleTest for writing test programs.
-To use them, include the header `gtest/gtest.h`.
+To use them, add `#include <gtest/gtest.h>`.
 
 ## Macros
 
@@ -94,7 +94,8 @@ Instantiates the value-parameterized test suite *`TestSuiteName`* (defined with
 The argument *`InstantiationName`* is a unique name for the instantiation of the
 test suite, to distinguish between multiple instantiations. In test output, the
 instantiation name is added as a prefix to the test suite name
-*`TestSuiteName`*.
+*`TestSuiteName`*. If *`InstantiationName`* is empty
+(`INSTANTIATE_TEST_SUITE_P(, ...)`), no prefix is added.
 
 The argument *`param_generator`* is one of the following GoogleTest-provided
 functions that generate the test parameters, all defined in the `::testing`
@@ -109,6 +110,7 @@ namespace:
 | `ValuesIn(container)` or `ValuesIn(begin,end)` | Yields values from a C-style array, an STL-style container, or an iterator range `[begin, end)`. |
 | `Bool()`                     | Yields sequence `{false, true}`.            |
 | `Combine(g1, g2, ..., gN)`   | Yields as `std::tuple` *n*-tuples all combinations (Cartesian product) of the values generated by the given *n* generators `g1`, `g2`, ..., `gN`. |
+| `ConvertGenerator<T>(g)` or `ConvertGenerator(g, func)`    | Yields values generated by generator `g`, `static_cast` from `T`. (Note: `T` might not be what you expect. See [*Using ConvertGenerator*](#using-convertgenerator) below.) The second overload uses `func` to perform the conversion. |
 
 The optional last argument *`name_generator`* is a function or functor that
 generates custom test name suffixes based on the test parameters. The function
@@ -121,8 +123,8 @@ custom function can be used for more control:
 ```cpp
 INSTANTIATE_TEST_SUITE_P(
     MyInstantiation, MyTestSuite,
-    ::testing::Values(...),
-    [](const ::testing::TestParamInfo<MyTestSuite::ParamType>& info) {
+    testing::Values(...),
+    [](const testing::TestParamInfo<MyTestSuite::ParamType>& info) {
       // Can use info.param here to generate the test suffix
       std::string name = ...
       return name;
@@ -135,9 +137,107 @@ For more information, see
 See also
 [`GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST`](#GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST).
 
+###### Using `ConvertGenerator`
+
+The functions listed in the table above appear to return generators that create
+values of the desired types, but this is not generally the case. Rather, they
+typically return factory objects that convert to the the desired generators.
+This affords some flexibility in allowing you to specify values of types that
+are different from, yet implicitly convertible to, the actual parameter type
+required by your fixture class.
+
+For example, you can do the following with a fixture that requires an `int`
+parameter:
+
+```cpp
+INSTANTIATE_TEST_SUITE_P(MyInstantiation, MyTestSuite,
+    testing::Values(1, 1.2));  // Yes, Values() supports heterogeneous argument types.
+```
+
+It might seem obvious that `1.2` &mdash; a `double` &mdash; will be converted to
+an `int` but in actuality it requires some template gymnastics involving the
+indirection described in the previous paragraph.
+
+What if your parameter type is not implicitly convertible from the generated
+type but is *explicitly* convertible? There will be no automatic conversion, but
+you can force it by applying `ConvertGenerator<T>`. The compiler can
+automatically deduce the target type (your fixture's parameter type), but
+because of the aforementioned indirection it cannot decide what the generated
+type should be. You need to tell it, by providing the type `T` explicitly. Thus
+`T` should not be your fixture's parameter type, but rather an intermediate type
+that is supported by the factory object, and which can be `static_cast` to the
+fixture's parameter type:
+
+```cpp
+// The fixture's parameter type.
+class MyParam {
+ public:
+  // Explicit converting ctor.
+  explicit MyParam(const std::tuple<int, bool>& t);
+  ...
+};
+
+INSTANTIATE_TEST_SUITE_P(MyInstantiation, MyTestSuite,
+    ConvertGenerator<std::tuple<int, bool>>(Combine(Values(0.1, 1.2), Bool())));
+```
+
+In this example `Combine` supports the generation of `std::tuple<int, bool>>`
+objects (even though the provided values for the first tuple element are
+`double`s) and those `tuple`s get converted into `MyParam` objects by virtue of
+the call to `ConvertGenerator`.
+
+For parameter types that are not convertible from the generated types you can
+provide a callable that does the conversion. The callable accepts an object of
+the generated type and returns an object of the fixture's parameter type. The
+generated type can often be deduced by the compiler from the callable's call
+signature so you do not usually need specify it explicitly (but see a caveat
+below).
+
+```cpp
+// The fixture's parameter type.
+class MyParam {
+ public:
+  MyParam(int, bool);
+  ...
+};
+
+INSTANTIATE_TEST_SUITE_P(MyInstantiation, MyTestSuite,
+    ConvertGenerator(Combine(Values(1, 1.2), Bool()),
+        [](const std::tuple<int, bool>& t){
+          const auto [i, b] = t;
+          return MyParam(i, b);
+        }));
+```
+
+The callable may be anything that can be used to initialize a `std::function`
+with the appropriate call signature. Note the callable's return object gets
+`static_cast` to the fixture's parameter type, so it does not have to be of that
+exact type, only convertible to it.
+
+**Caveat:** Consider the following example.
+
+```cpp
+INSTANTIATE_TEST_SUITE_P(MyInstantiation, MyTestSuite,
+    ConvertGenerator(Values(std::string("s")), [](std::string_view s) { ... }));
+```
+
+The `string` argument gets copied into the factory object returned by `Values`.
+Then, because the generated type deduced from the lambda is `string_view`, the
+factory object spawns a generator that holds a `string_view` referencing that
+`string`. Unfortunately, by the time this generator gets invoked, the factory
+object is gone and the `string_view` is dangling.
+
+To overcome this problem you can specify the generated type explicitly:
+`ConvertGenerator<std::string>(Values(std::string("s")), [](std::string_view s)
+{ ... })`. Alternatively, you can change the lambda's signature to take a
+`std::string` or a `const std::string&` (the latter will not leave you with a
+dangling reference because the type deduction strips off the reference and the
+`const`).
+
 ### TYPED_TEST_SUITE {#TYPED_TEST_SUITE}
 
 `TYPED_TEST_SUITE(`*`TestFixtureName`*`,`*`Types`*`)`
+`TYPED_TEST_SUITE(`*`TestFixtureName`*`,`*`Types`*`,`*`NameGenerator`*`)`
 
 Defines a typed test suite based on the test fixture *`TestFixtureName`*. The
 test suite name is *`TestFixtureName`*.
@@ -147,7 +247,7 @@ type, for example:
 
 ```cpp
 template <typename T>
-class MyFixture : public ::testing::Test {
+class MyFixture : public testing::Test {
  public:
   ...
   using List = std::list<T>;
@@ -167,6 +267,22 @@ TYPED_TEST_SUITE(MyFixture, MyTypes);
 The type alias (`using` or `typedef`) is necessary for the `TYPED_TEST_SUITE`
 macro to parse correctly.
 
+The optional third argument *`NameGenerator`* allows specifying a class that
+exposes a templated static function `GetName(int)`. For example:
+
+```cpp
+class NameGenerator {
+ public:
+  template <typename T>
+  static std::string GetName(int) {
+    if constexpr (std::is_same_v<T, char>) return "char";
+    if constexpr (std::is_same_v<T, int>) return "int";
+    if constexpr (std::is_same_v<T, unsigned int>) return "unsignedInt";
+  }
+};
+TYPED_TEST_SUITE(MyFixture, MyTypes, NameGenerator);
+```
+
 See also [`TYPED_TEST`](#TYPED_TEST) and
 [Typed Tests](../advanced.md#typed-tests) for more information.
 
@@ -276,7 +392,8 @@ must be registered with
 The argument *`InstantiationName`* is a unique name for the instantiation of the
 test suite, to distinguish between multiple instantiations. In test output, the
 instantiation name is added as a prefix to the test suite name
-*`TestSuiteName`*.
+*`TestSuiteName`*. If *`InstantiationName`* is empty
+(`INSTANTIATE_TYPED_TEST_SUITE_P(, ...)`), no prefix is added.
 
 The argument *`Types`* is a [`Types`](#Types) object representing the list of
 types to run the tests on, for example:
@@ -323,7 +440,7 @@ Then the test code should look like:
 ```cpp
 namespace my_namespace {
 
-class MyClassTest : public ::testing::Test {
+class MyClassTest : public testing::Test {
   ...
 };
 
@@ -386,7 +503,7 @@ GoogleTest defines the following classes and types to help with writing tests.
 
 ### AssertionResult {#AssertionResult}
 
-`::testing::AssertionResult`
+`testing::AssertionResult`
 
 A class for indicating whether an assertion was successful.
 
@@ -400,14 +517,14 @@ To create an instance of this class, use one of the factory functions
 
 ### AssertionException {#AssertionException}
 
-`::testing::AssertionException`
+`testing::AssertionException`
 
 Exception which can be thrown from
 [`TestEventListener::OnTestPartResult`](#TestEventListener::OnTestPartResult).
 
 ### EmptyTestEventListener {#EmptyTestEventListener}
 
-`::testing::EmptyTestEventListener`
+`testing::EmptyTestEventListener`
 
 Provides an empty implementation of all methods in the
 [`TestEventListener`](#TestEventListener) interface, such that a subclass only
@@ -415,7 +532,7 @@ needs to override the methods it cares about.
 
 ### Environment {#Environment}
 
-`::testing::Environment`
+`testing::Environment`
 
 Represents a global test environment. See
 [Global Set-Up and Tear-Down](../advanced.md#global-set-up-and-tear-down).
@@ -436,7 +553,7 @@ Override this to define how to tear down the environment.
 
 ### ScopedTrace {#ScopedTrace}
 
-`::testing::ScopedTrace`
+`testing::ScopedTrace`
 
 An instance of this class causes a trace to be included in every test failure
 message generated by code in the scope of the lifetime of the `ScopedTrace`
@@ -452,7 +569,7 @@ ScopedTrace(const char* file, int line, const T& message)
 Example usage:
 
 ```cpp
-::testing::ScopedTrace trace("file.cc", 123, "message");
+testing::ScopedTrace trace("file.cc", 123, "message");
 ```
 
 The resulting trace includes the given source file path and line number, and the
@@ -463,7 +580,7 @@ See also [`SCOPED_TRACE`](#SCOPED_TRACE).
 
 ### Test {#Test}
 
-`::testing::Test`
+`testing::Test`
 
 The abstract class that all tests inherit from. `Test` is not copyable.
 
@@ -551,7 +668,7 @@ after running each individual test.
 
 ### TestWithParam {#TestWithParam}
 
-`::testing::TestWithParam<T>`
+`testing::TestWithParam<T>`
 
 A convenience class which inherits from both [`Test`](#Test) and
 [`WithParamInterface<T>`](#WithParamInterface).
@@ -671,7 +788,7 @@ during execution of `SetUpTestSuite` and `TearDownTestSuite`.
 
 ### TestInfo {#TestInfo}
 
-`::testing::TestInfo`
+`testing::TestInfo`
 
 Stores information about a test.
 
@@ -750,7 +867,7 @@ Returns the result of the test. See [`TestResult`](#TestResult).
 
 ### TestParamInfo {#TestParamInfo}
 
-`::testing::TestParamInfo<T>`
+`testing::TestParamInfo<T>`
 
 Describes a parameter to a value-parameterized test. The type `T` is the type of
 the parameter.
@@ -760,7 +877,7 @@ and its integer index respectively.
 
 ### UnitTest {#UnitTest}
 
-`::testing::UnitTest`
+`testing::UnitTest`
 
 This class contains information about the test program.
 
@@ -928,7 +1045,7 @@ GoogleTest. See [`TestEventListeners`](#TestEventListeners).
 
 ### TestEventListener {#TestEventListener}
 
-`::testing::TestEventListener`
+`testing::TestEventListener`
 
 The interface for tracing execution of tests. The methods below are listed in
 the order the corresponding events are fired.
@@ -1026,7 +1143,7 @@ Fired after all test activities have ended.
 
 ### TestEventListeners {#TestEventListeners}
 
-`::testing::TestEventListeners`
+`testing::TestEventListeners`
 
 Lets users add listeners to track events in GoogleTest.
 
@@ -1071,7 +1188,7 @@ the caller and makes this function return `NULL` the next time.
 
 ### TestPartResult {#TestPartResult}
 
-`::testing::TestPartResult`
+`testing::TestPartResult`
 
 A copyable object representing the result of a test part (i.e. an assertion or
 an explicit `FAIL()`, `ADD_FAILURE()`, or `SUCCESS()`).
@@ -1153,7 +1270,7 @@ Returns true if and only if the test part failed.
 
 ### TestProperty {#TestProperty}
 
-`::testing::TestProperty`
+`testing::TestProperty`
 
 A copyable object representing a user-specified test property which can be
 output as a key/value string pair.
@@ -1180,7 +1297,7 @@ Sets a new value, overriding the previous one.
 
 ### TestResult {#TestResult}
 
-`::testing::TestResult`
+`testing::TestResult`
 
 Contains information about the result of a single test.
 
@@ -1261,20 +1378,20 @@ range, aborts the program.
 
 ### TimeInMillis {#TimeInMillis}
 
-`::testing::TimeInMillis`
+`testing::TimeInMillis`
 
 An integer type representing time in milliseconds.
 
 ### Types {#Types}
 
-`::testing::Types<T...>`
+`testing::Types<T...>`
 
 Represents a list of types for use in typed tests and type-parameterized tests.
 
 The template argument `T...` can be any number of types, for example:
 
 ```
-::testing::Types<char, int, unsigned int>
+testing::Types<char, int, unsigned int>
 ```
 
 See [Typed Tests](../advanced.md#typed-tests) and
@@ -1283,7 +1400,7 @@ information.
 
 ### WithParamInterface {#WithParamInterface}
 
-`::testing::WithParamInterface<T>`
+`testing::WithParamInterface<T>`
 
 The pure interface class that all value-parameterized tests inherit from.
 
@@ -1309,14 +1426,16 @@ tests.
 
 ### InitGoogleTest {#InitGoogleTest}
 
-`void ::testing::InitGoogleTest(int* argc, char** argv)` \
-`void ::testing::InitGoogleTest(int* argc, wchar_t** argv)` \
-`void ::testing::InitGoogleTest()`
+`void testing::InitGoogleTest(int* argc, char** argv)` \
+`void testing::InitGoogleTest(int* argc, wchar_t** argv)` \
+`void testing::InitGoogleTest()`
 
 Initializes GoogleTest. This must be called before calling
 [`RUN_ALL_TESTS()`](#RUN_ALL_TESTS). In particular, it parses the command line
 for the flags that GoogleTest recognizes. Whenever a GoogleTest flag is seen, it
-is removed from `argv`, and `*argc` is decremented.
+is removed from `argv`, and `*argc` is decremented. Keep in mind that `argv`
+must terminate with a `NULL` pointer (i.e. `argv[argc]` is `NULL`), which is
+already the case with the default `argv` passed to `main`.
 
 No value is returned. Instead, the GoogleTest flag variables are updated.
 
@@ -1328,7 +1447,7 @@ platforms where there is no `argc`/`argv`.
 
 ### AddGlobalTestEnvironment {#AddGlobalTestEnvironment}
 
-`Environment* ::testing::AddGlobalTestEnvironment(Environment* env)`
+`Environment* testing::AddGlobalTestEnvironment(Environment* env)`
 
 Adds a test environment to the test program. Must be called before
 [`RUN_ALL_TESTS()`](#RUN_ALL_TESTS) is called. See
@@ -1341,7 +1460,7 @@ See also [`Environment`](#Environment).
 
 ```cpp
 template <typename Factory>
-TestInfo* ::testing::RegisterTest(const char* test_suite_name, const char* test_name,
+TestInfo* testing::RegisterTest(const char* test_suite_name, const char* test_name,
                                   const char* type_param, const char* value_param,
                                   const char* file, int line, Factory factory)
 ```
@@ -1380,27 +1499,27 @@ an all-caps name.
 
 ### AssertionSuccess {#AssertionSuccess}
 
-`AssertionResult ::testing::AssertionSuccess()`
+`AssertionResult testing::AssertionSuccess()`
 
 Creates a successful assertion result. See
 [`AssertionResult`](#AssertionResult).
 
 ### AssertionFailure {#AssertionFailure}
 
-`AssertionResult ::testing::AssertionFailure()`
+`AssertionResult testing::AssertionFailure()`
 
 Creates a failed assertion result. Use the `<<` operator to store a failure
 message:
 
 ```cpp
-::testing::AssertionFailure() << "My failure message";
+testing::AssertionFailure() << "My failure message";
 ```
 
 See [`AssertionResult`](#AssertionResult).
 
 ### StaticAssertTypeEq {#StaticAssertTypeEq}
 
-`::testing::StaticAssertTypeEq<T1, T2>()`
+`testing::StaticAssertTypeEq<T1, T2>()`
 
 Compile-time assertion for type equality. Compiles if and only if `T1` and `T2`
 are the same type. The value it returns is irrelevant.
@@ -1409,7 +1528,7 @@ See [Type Assertions](../advanced.md#type-assertions) for more information.
 
 ### PrintToString {#PrintToString}
 
-`std::string ::testing::PrintToString(x)`
+`std::string testing::PrintToString(x)`
 
 Prints any value `x` using GoogleTest's value printer.
 
@@ -1419,7 +1538,7 @@ for more information.
 
 ### PrintToStringParamName {#PrintToStringParamName}
 
-`std::string ::testing::PrintToStringParamName(TestParamInfo<T>& info)`
+`std::string testing::PrintToStringParamName(TestParamInfo<T>& info)`
 
 A built-in parameterized test name generator which returns the result of
 [`PrintToString`](#PrintToString) called on `info.param`. Does not work when the

docs/samples.md

@@ -1,7 +1,7 @@
 # Googletest Samples
 
 If you're like us, you'd like to look at
-[googletest samples.](https://github.com/google/googletest/tree/master/googletest/samples)
+[googletest samples.](https://github.com/google/googletest/blob/main/googletest/samples)
 The sample directory has a number of well-commented samples showing how to use a
 variety of googletest features.
 

fake_fuchsia_sdk.bzl

@@ -0,0 +1,61 @@
+"""Provides a fake @fuchsia_sdk implementation that's used when the real one isn't available.
+
+GoogleTest can be used with the [Fuchsia](https://fuchsia.dev/) SDK. However,
+because the Fuchsia SDK does not yet support bzlmod, GoogleTest's `MODULE.bazel`
+file by default provides a "fake" Fuchsia SDK.
+
+To override this and use the real Fuchsia SDK, you can add the following to your
+project's `MODULE.bazel` file:
+
+    fake_fuchsia_sdk_extension =
+    use_extension("@com_google_googletest//:fake_fuchsia_sdk.bzl", "fuchsia_sdk")
+    override_repo(fake_fuchsia_sdk_extension, "fuchsia_sdk")
+
+NOTE: The `override_repo` built-in is only available in Bazel 8.0 and higher.
+
+See https://github.com/google/googletest/issues/4472 for more details of why the
+fake Fuchsia SDK is needed.
+"""
+
+def _fake_fuchsia_sdk_impl(repo_ctx):
+    for stub_target in repo_ctx.attr._stub_build_targets:
+        stub_package = stub_target
+        stub_target_name = stub_target.split("/")[-1]
+        repo_ctx.file("%s/BUILD.bazel" % stub_package, """
+filegroup(
+    name = "%s",
+)
+""" % stub_target_name)
+
+fake_fuchsia_sdk = repository_rule(
+    doc = "Used to create a fake @fuchsia_sdk repository with stub build targets.",
+    implementation = _fake_fuchsia_sdk_impl,
+    attrs = {
+        "_stub_build_targets": attr.string_list(
+            doc = "The stub build targets to initialize.",
+            default = [
+                "pkg/fdio",
+                "pkg/syslog",
+                "pkg/zx",
+            ],
+        ),
+    },
+)
+
+_create_fake = tag_class()
+
+def _fuchsia_sdk_impl(module_ctx):
+    create_fake_sdk = False
+    for mod in module_ctx.modules:
+        for _ in mod.tags.create_fake:
+            create_fake_sdk = True
+
+    if create_fake_sdk:
+        fake_fuchsia_sdk(name = "fuchsia_sdk")
+
+    return module_ctx.extension_metadata(reproducible = True)
+
+fuchsia_sdk = module_extension(
+    implementation = _fuchsia_sdk_impl,
+    tag_classes = {"create_fake": _create_fake},
+)

googlemock/CMakeLists.txt

@@ -5,7 +5,7 @@
 # CMake build script for Google Mock.
 #
 # To run the tests for Google Mock itself on Linux, use 'make test' or
-# ctest.  You can select which tests to run using 'ctest -R regex'.
+# ctest. You can select which tests to run using 'ctest -R regex'.
 # For more options, run 'ctest --help'.
 
 option(gmock_build_tests "Build all of Google Mock's own tests." OFF)
@@ -36,8 +36,7 @@ endif()
 # as ${gmock_SOURCE_DIR} and to the root binary directory as
 # ${gmock_BINARY_DIR}.
 # Language "C" is required for find_package(Threads).
-cmake_minimum_required(VERSION 3.5)
-cmake_policy(SET CMP0048 NEW)
+cmake_minimum_required(VERSION 3.13)
 project(gmock VERSION ${GOOGLETEST_VERSION} LANGUAGES CXX C)
 
 if (COMMAND set_up_hermetic_build)
@@ -45,7 +44,7 @@ if (COMMAND set_up_hermetic_build)
 endif()
 
 # Instructs CMake to process Google Test's CMakeLists.txt and add its
-# targets to the current scope.  We are placing Google Test's binary
+# targets to the current scope. We are placing Google Test's binary
 # directory in a subdirectory of our own as VC compilation may break
 # if they are the same (the default).
 add_subdirectory("${gtest_dir}" "${gmock_BINARY_DIR}/${gtest_dir}")
@@ -61,25 +60,26 @@ else()
 endif()
 
 # Although Google Test's CMakeLists.txt calls this function, the
-# changes there don't affect the current scope.  Therefore we have to
+# changes there don't affect the current scope. Therefore we have to
 # call it again here.
-config_compiler_and_linker()  # from ${gtest_dir}/cmake/internal_utils.cmake
+config_compiler_and_linker() # from ${gtest_dir}/cmake/internal_utils.cmake
 
 # Adds Google Mock's and Google Test's header directories to the search path.
+# Get Google Test's include dirs from the target, gtest_SOURCE_DIR is broken
+# when using fetch-content with the name "GTest".
+get_target_property(gtest_include_dirs gtest INCLUDE_DIRECTORIES)
 set(gmock_build_include_dirs
   "${gmock_SOURCE_DIR}/include"
   "${gmock_SOURCE_DIR}"
-  "${gtest_SOURCE_DIR}/include"
-  # This directory is needed to build directly from Google Test sources.
-  "${gtest_SOURCE_DIR}")
+  "${gtest_include_dirs}")
 include_directories(${gmock_build_include_dirs})
 
 ########################################################################
 #
-# Defines the gmock & gmock_main libraries.  User tests should link
+# Defines the gmock & gmock_main libraries. User tests should link
 # with one of them.
 
-# Google Mock libraries.  We build them using more strict warnings than what
+# Google Mock libraries. We build them using more strict warnings than what
 # are used for other targets, to ensure that Google Mock can be compiled by
 # a user aggressive about warnings.
 if (MSVC)
@@ -101,22 +101,18 @@ else()
   target_link_libraries(gmock_main PUBLIC gmock)
   set_target_properties(gmock_main PROPERTIES VERSION ${GOOGLETEST_VERSION})
 endif()
-# If the CMake version supports it, attach header directory information
-# to the targets for when we are part of a parent build (ie being pulled
-# in via add_subdirectory() rather than being a standalone build).
-if (DEFINED CMAKE_VERSION AND NOT "${CMAKE_VERSION}" VERSION_LESS "2.8.11")
-  string(REPLACE ";" "$<SEMICOLON>" dirs "${gmock_build_include_dirs}")
-  target_include_directories(gmock SYSTEM INTERFACE
-    "$<BUILD_INTERFACE:${dirs}>"
-    "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/${CMAKE_INSTALL_INCLUDEDIR}>")
-  target_include_directories(gmock_main SYSTEM INTERFACE
-    "$<BUILD_INTERFACE:${dirs}>"
-    "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/${CMAKE_INSTALL_INCLUDEDIR}>")
-endif()
+
+string(REPLACE ";" "$<SEMICOLON>" dirs "${gmock_build_include_dirs}")
+target_include_directories(gmock SYSTEM INTERFACE
+  "$<BUILD_INTERFACE:${dirs}>"
+  "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/${CMAKE_INSTALL_INCLUDEDIR}>")
+target_include_directories(gmock_main SYSTEM INTERFACE
+  "$<BUILD_INTERFACE:${dirs}>"
+  "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/${CMAKE_INSTALL_INCLUDEDIR}>")
 
 ########################################################################
 #
-# Install rules
+# Install rules.
 install_project(gmock gmock_main)
 
 ########################################################################
@@ -126,8 +122,8 @@ install_project(gmock gmock_main)
 # You can skip this section if you aren't interested in testing
 # Google Mock itself.
 #
-# The tests are not built by default.  To build them, set the
-# gmock_build_tests option to ON.  You can do it by running ccmake
+# The tests are not built by default. To build them, set the
+# gmock_build_tests option to ON. You can do it by running ccmake
 # or specifying the -Dgmock_build_tests=ON flag when running cmake.
 
 if (gmock_build_tests)
@@ -136,11 +132,7 @@ if (gmock_build_tests)
   enable_testing()
 
   if (MINGW OR CYGWIN)
-    if (CMAKE_VERSION VERSION_LESS "2.8.12")
-      add_compile_options("-Wa,-mbig-obj")
-    else()
-      add_definitions("-Wa,-mbig-obj")
-    endif()
+    add_compile_options("-Wa,-mbig-obj")
   endif()
 
   ############################################################
@@ -196,7 +188,7 @@ if (gmock_build_tests)
   cxx_shared_library(shared_gmock_main "${cxx_default}"
     "${gtest_dir}/src/gtest-all.cc" src/gmock-all.cc src/gmock_main.cc)
 
-  # Tests that a binary can be built with Google Mock as a shared library.  On
+  # Tests that a binary can be built with Google Mock as a shared library. On
   # some system configurations, it may not possible to run the binary without
   # knowing more details about the system configurations. We do not try to run
   # this binary. To get a more robust shared library coverage, configure with

googlemock/README.md

@@ -8,8 +8,8 @@ derive better designs of your system and write better tests.
 It is inspired by:
 
 *   [jMock](http://www.jmock.org/)
-*   [EasyMock](http://www.easymock.org/)
-*   [Hamcrest](http://code.google.com/p/hamcrest/)
+*   [EasyMock](https://easymock.org/)
+*   [Hamcrest](https://code.google.com/p/hamcrest/)
 
 It is designed with C++'s specifics in mind.
 
@@ -36,5 +36,5 @@ Details and examples can be found here:
 *   [gMock Cheat Sheet](https://google.github.io/googletest/gmock_cheat_sheet.html)
 
 GoogleMock is a part of
-[GoogleTest C++ testing framework](http://github.com/google/googletest/) and a
+[GoogleTest C++ testing framework](https://github.com/google/googletest/) and a
 subject to the same requirements.

googlemock/include/gmock/gmock-actions.h

@@ -122,7 +122,7 @@
 // MORE INFORMATION:
 //
 // To learn more about using these macros, please search for 'ACTION' on
-// https://github.com/google/googletest/blob/master/docs/gmock_cook_book.md
+// https://github.com/google/googletest/blob/main/docs/gmock_cook_book.md
 
 // IWYU pragma: private, include "gmock/gmock.h"
 // IWYU pragma: friend gmock/.*
@@ -135,6 +135,7 @@
 #endif
 
 #include <algorithm>
+#include <exception>
 #include <functional>
 #include <memory>
 #include <string>
@@ -146,10 +147,7 @@
 #include "gmock/internal/gmock-port.h"
 #include "gmock/internal/gmock-pp.h"
 
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4100)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4100)
 
 namespace testing {
 
@@ -178,9 +176,15 @@ struct BuiltInDefaultValueGetter<T, false> {
   static T Get() {
     Assert(false, __FILE__, __LINE__,
            "Default action undefined for the function return type.");
-    return internal::Invalid<T>();
+#if defined(__GNUC__) || defined(__clang__)
+    __builtin_unreachable();
+#elif defined(_MSC_VER)
+    __assume(0);
+#else
+    return Invalid<T>();
     // The above statement will never be reached, but is required in
     // order for this function to compile.
+#endif
   }
 };
 
@@ -614,7 +618,7 @@ class DefaultValue {
  private:
   class ValueProducer {
    public:
-    virtual ~ValueProducer() {}
+    virtual ~ValueProducer() = default;
     virtual T Produce() = 0;
   };
 
@@ -702,8 +706,8 @@ class ActionInterface {
   typedef typename internal::Function<F>::Result Result;
   typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
 
-  ActionInterface() {}
-  virtual ~ActionInterface() {}
+  ActionInterface() = default;
+  virtual ~ActionInterface() = default;
 
   // Performs the action.  This method is not const, as in general an
   // action can have side effects and be stateful.  For example, a
@@ -752,7 +756,7 @@ class Action<R(Args...)> {
 
   // Constructs a null Action.  Needed for storing Action objects in
   // STL containers.
-  Action() {}
+  Action() = default;
 
   // Construct an Action from a specified callable.
   // This cannot take std::function directly, because then Action would not be
@@ -831,6 +835,10 @@ class Action<R(Args...)> {
     Result operator()(const InArgs&...) const {
       return function_impl();
     }
+    template <typename... InArgs>
+    Result operator()(const InArgs&...) {
+      return function_impl();
+    }
 
     FunctionImpl function_impl;
   };
@@ -1276,7 +1284,7 @@ class AssignAction {
   const T2 value_;
 };
 
-#if !GTEST_OS_WINDOWS_MOBILE
+#ifndef GTEST_OS_WINDOWS_MOBILE
 
 // Implements the SetErrnoAndReturn action to simulate return from
 // various system calls and libc functions.
@@ -1420,17 +1428,19 @@ struct WithArgsAction {
   // providing a call operator because even with a particular set of arguments
   // they don't have a fixed return type.
 
-  template <typename R, typename... Args,
-            typename std::enable_if<
-                std::is_convertible<
-                    InnerAction,
-                    // Unfortunately we can't use the InnerSignature alias here;
-                    // MSVC complains about the I parameter pack not being
-                    // expanded (error C3520) despite it being expanded in the
-                    // type alias.
-                    OnceAction<R(typename std::tuple_element<
-                                 I, std::tuple<Args...>>::type...)>>::value,
-                int>::type = 0>
+  template <
+      typename R, typename... Args,
+      typename std::enable_if<
+          std::is_convertible<InnerAction,
+                              // Unfortunately we can't use the InnerSignature
+                              // alias here; MSVC complains about the I
+                              // parameter pack not being expanded (error C3520)
+                              // despite it being expanded in the type alias.
+                              // TupleElement is also an MSVC workaround.
+                              // See its definition for details.
+                              OnceAction<R(internal::TupleElement<
+                                           I, std::tuple<Args...>>...)>>::value,
+          int>::type = 0>
   operator OnceAction<R(Args...)>() && {  // NOLINT
     struct OA {
       OnceAction<InnerSignature<R, Args...>> inner_action;
@@ -1445,17 +1455,43 @@ struct WithArgsAction {
     return OA{std::move(inner_action)};
   }
 
-  template <typename R, typename... Args,
-            typename std::enable_if<
-                std::is_convertible<
-                    const InnerAction&,
-                    // Unfortunately we can't use the InnerSignature alias here;
-                    // MSVC complains about the I parameter pack not being
-                    // expanded (error C3520) despite it being expanded in the
-                    // type alias.
-                    Action<R(typename std::tuple_element<
-                             I, std::tuple<Args...>>::type...)>>::value,
-                int>::type = 0>
+  // As above, but in the case where we want to create a OnceAction from a const
+  // WithArgsAction. This is fine as long as the inner action doesn't need to
+  // move any of its state to create a OnceAction.
+  template <
+      typename R, typename... Args,
+      typename std::enable_if<
+          std::is_convertible<const InnerAction&,
+                              OnceAction<R(internal::TupleElement<
+                                           I, std::tuple<Args...>>...)>>::value,
+          int>::type = 0>
+  operator OnceAction<R(Args...)>() const& {  // NOLINT
+    struct OA {
+      OnceAction<InnerSignature<R, Args...>> inner_action;
+
+      R operator()(Args&&... args) && {
+        return std::move(inner_action)
+            .Call(std::get<I>(
+                std::forward_as_tuple(std::forward<Args>(args)...))...);
+      }
+    };
+
+    return OA{inner_action};
+  }
+
+  template <
+      typename R, typename... Args,
+      typename std::enable_if<
+          std::is_convertible<const InnerAction&,
+                              // Unfortunately we can't use the InnerSignature
+                              // alias here; MSVC complains about the I
+                              // parameter pack not being expanded (error C3520)
+                              // despite it being expanded in the type alias.
+                              // TupleElement is also an MSVC workaround.
+                              // See its definition for details.
+                              Action<R(internal::TupleElement<
+                                       I, std::tuple<Args...>>...)>>::value,
+          int>::type = 0>
   operator Action<R(Args...)>() const {  // NOLINT
     Action<InnerSignature<R, Args...>> converted(inner_action);
 
@@ -1485,6 +1521,7 @@ class DoAllAction<FinalAction> {
   // providing a call operator because even with a particular set of arguments
   // they don't have a fixed return type.
 
+  // We support conversion to OnceAction whenever the sub-action does.
   template <typename R, typename... Args,
             typename std::enable_if<
                 std::is_convertible<FinalAction, OnceAction<R(Args...)>>::value,
@@ -1493,6 +1530,21 @@ class DoAllAction<FinalAction> {
     return std::move(final_action_);
   }
 
+  // We also support conversion to OnceAction whenever the sub-action supports
+  // conversion to Action (since any Action can also be a OnceAction).
+  template <
+      typename R, typename... Args,
+      typename std::enable_if<
+          conjunction<
+              negation<
+                  std::is_convertible<FinalAction, OnceAction<R(Args...)>>>,
+              std::is_convertible<FinalAction, Action<R(Args...)>>>::value,
+          int>::type = 0>
+  operator OnceAction<R(Args...)>() && {  // NOLINT
+    return Action<R(Args...)>(std::move(final_action_));
+  }
+
+  // We support conversion to Action whenever the sub-action does.
   template <
       typename R, typename... Args,
       typename std::enable_if<
@@ -1572,16 +1624,16 @@ class DoAllAction<InitialAction, OtherActions...>
       : Base({}, std::forward<U>(other_actions)...),
         initial_action_(std::forward<T>(initial_action)) {}
 
-  template <typename R, typename... Args,
-            typename std::enable_if<
-                conjunction<
-                    // Both the initial action and the rest must support
-                    // conversion to OnceAction.
-                    std::is_convertible<
-                        InitialAction,
-                        OnceAction<void(InitialActionArgType<Args>...)>>,
-                    std::is_convertible<Base, OnceAction<R(Args...)>>>::value,
-                int>::type = 0>
+  // We support conversion to OnceAction whenever both the initial action and
+  // the rest support conversion to OnceAction.
+  template <
+      typename R, typename... Args,
+      typename std::enable_if<
+          conjunction<std::is_convertible<
+                          InitialAction,
+                          OnceAction<void(InitialActionArgType<Args>...)>>,
+                      std::is_convertible<Base, OnceAction<R(Args...)>>>::value,
+          int>::type = 0>
   operator OnceAction<R(Args...)>() && {  // NOLINT
     // Return an action that first calls the initial action with arguments
     // filtered through InitialActionArgType, then forwards arguments directly
@@ -1604,12 +1656,34 @@ class DoAllAction<InitialAction, OtherActions...>
     };
   }
 
+  // We also support conversion to OnceAction whenever the initial action
+  // supports conversion to Action (since any Action can also be a OnceAction).
+  //
+  // The remaining sub-actions must also be compatible, but we don't need to
+  // special case them because the base class deals with them.
+  template <
+      typename R, typename... Args,
+      typename std::enable_if<
+          conjunction<
+              negation<std::is_convertible<
+                  InitialAction,
+                  OnceAction<void(InitialActionArgType<Args>...)>>>,
+              std::is_convertible<InitialAction,
+                                  Action<void(InitialActionArgType<Args>...)>>,
+              std::is_convertible<Base, OnceAction<R(Args...)>>>::value,
+          int>::type = 0>
+  operator OnceAction<R(Args...)>() && {  // NOLINT
+    return DoAll(
+        Action<void(InitialActionArgType<Args>...)>(std::move(initial_action_)),
+        std::move(static_cast<Base&>(*this)));
+  }
+
+  // We support conversion to Action whenever both the initial action and the
+  // rest support conversion to Action.
   template <
       typename R, typename... Args,
       typename std::enable_if<
           conjunction<
-              // Both the initial action and the rest must support conversion to
-              // Action.
               std::is_convertible<const InitialAction&,
                                   Action<void(InitialActionArgType<Args>...)>>,
               std::is_convertible<const Base&, Action<R(Args...)>>>::value,
@@ -1673,6 +1747,16 @@ struct SaveArgAction {
   }
 };
 
+template <size_t k, typename Ptr>
+struct SaveArgByMoveAction {
+  Ptr pointer;
+
+  template <typename... Args>
+  void operator()(Args&&... args) const {
+    *pointer = std::move(std::get<k>(std::tie(args...)));
+  }
+};
+
 template <size_t k, typename Ptr>
 struct SaveArgPointeeAction {
   Ptr pointer;
@@ -1712,11 +1796,24 @@ struct SetArrayArgumentAction {
 };
 
 template <size_t k>
-struct DeleteArgAction {
+class DeleteArgAction {
+ public:
   template <typename... Args>
   void operator()(const Args&... args) const {
-    delete std::get<k>(std::tie(args...));
+    DoDelete(std::get<k>(std::tie(args...)));
   }
+
+ private:
+  template <typename T>
+  static void DoDelete(T* ptr) {
+    delete ptr;
+  }
+
+  template <typename T>
+  [[deprecated(
+      "DeleteArg<N> used for a non-pointer argument, it was likely migrated "
+      "to a smart pointer type. This action should be removed.")]]
+  static void DoDelete(T&) {}
 };
 
 template <typename Ptr>
@@ -1739,6 +1836,13 @@ struct ThrowAction {
     return [copy](Args...) -> R { throw copy; };
   }
 };
+struct RethrowAction {
+  std::exception_ptr exception;
+  template <typename R, typename... Args>
+  operator Action<R(Args...)>() const {  // NOLINT
+    return [ex = exception](Args...) -> R { std::rethrow_exception(ex); };
+  }
+};
 #endif  // GTEST_HAS_EXCEPTIONS
 
 }  // namespace internal
@@ -1775,6 +1879,13 @@ struct ThrowAction {
 //   EXPECT_CALL(mock, Bar(5, _, _)).WillOnce(Invoke(DistanceToOrigin));
 typedef internal::IgnoredValue Unused;
 
+// Deprecated single-argument DoAll.
+template <typename Action>
+GTEST_INTERNAL_DEPRECATE_AND_INLINE("Avoid using DoAll() for single actions")
+typename std::decay<Action>::type DoAll(Action&& action) {
+  return std::forward<Action>(action);
+}
+
 // Creates an action that does actions a1, a2, ..., sequentially in
 // each invocation. All but the last action will have a readonly view of the
 // arguments.
@@ -1925,7 +2036,7 @@ PolymorphicAction<internal::AssignAction<T1, T2>> Assign(T1* ptr, T2 val) {
   return MakePolymorphicAction(internal::AssignAction<T1, T2>(ptr, val));
 }
 
-#if !GTEST_OS_WINDOWS_MOBILE
+#ifndef GTEST_OS_WINDOWS_MOBILE
 
 // Creates an action that sets errno and returns the appropriate error.
 template <typename T>
@@ -1940,10 +2051,11 @@ PolymorphicAction<internal::SetErrnoAndReturnAction<T>> SetErrnoAndReturn(
 // Various overloads for Invoke().
 
 // Legacy function.
-// Actions can now be implicitly constructed from callables. No need to create
-// wrapper objects.
 // This function exists for backwards compatibility.
 template <typename FunctionImpl>
+GTEST_INTERNAL_DEPRECATE_AND_INLINE(
+    "Actions can now be implicitly constructed from callables. No need to "
+    "create wrapper objects using Invoke().")
 typename std::decay<FunctionImpl>::type Invoke(FunctionImpl&& function_impl) {
   return std::forward<FunctionImpl>(function_impl);
 }
@@ -2016,6 +2128,13 @@ internal::SaveArgAction<k, Ptr> SaveArg(Ptr pointer) {
   return {pointer};
 }
 
+// Action SaveArgByMove<k>(pointer) moves the k-th (0-based) argument of the
+// mock function into *pointer.
+template <size_t k, typename Ptr>
+internal::SaveArgByMoveAction<k, Ptr> SaveArgByMove(Ptr pointer) {
+  return {pointer};
+}
+
 // Action SaveArgPointee<k>(pointer) saves the value pointed to
 // by the k-th (0-based) argument of the mock function to *pointer.
 template <size_t k, typename Ptr>
@@ -2055,13 +2174,23 @@ internal::ReturnPointeeAction<Ptr> ReturnPointee(Ptr pointer) {
   return {pointer};
 }
 
-// Action Throw(exception) can be used in a mock function of any type
-// to throw the given exception.  Any copyable value can be thrown.
 #if GTEST_HAS_EXCEPTIONS
+// Action Throw(exception) can be used in a mock function of any type
+// to throw the given exception.  Any copyable value can be thrown,
+// except for std::exception_ptr, which is likely a mistake if
+// thrown directly.
 template <typename T>
-internal::ThrowAction<typename std::decay<T>::type> Throw(T&& exception) {
+typename std::enable_if<
+    !std::is_base_of<std::exception_ptr, typename std::decay<T>::type>::value,
+    internal::ThrowAction<typename std::decay<T>::type>>::type
+Throw(T&& exception) {
   return {std::forward<T>(exception)};
 }
+// Action Rethrow(exception_ptr) can be used in a mock function of any type
+// to rethrow any exception_ptr. Note that the same object is thrown each time.
+inline internal::RethrowAction Rethrow(std::exception_ptr exception) {
+  return {std::move(exception)};
+}
 #endif  // GTEST_HAS_EXCEPTIONS
 
 namespace internal {
@@ -2110,13 +2239,13 @@ struct ActionImpl<R(Args...), Impl> : ImplBase<Impl>::type {
   R operator()(Args&&... arg) const {
     static constexpr size_t kMaxArgs =
         sizeof...(Args) <= 10 ? sizeof...(Args) : 10;
-    return Apply(MakeIndexSequence<kMaxArgs>{},
-                 MakeIndexSequence<10 - kMaxArgs>{},
+    return Apply(std::make_index_sequence<kMaxArgs>{},
+                 std::make_index_sequence<10 - kMaxArgs>{},
                  args_type{std::forward<Args>(arg)...});
   }
 
   template <std::size_t... arg_id, std::size_t... excess_id>
-  R Apply(IndexSequence<arg_id...>, IndexSequence<excess_id...>,
+  R Apply(std::index_sequence<arg_id...>, std::index_sequence<excess_id...>,
           const args_type& args) const {
     // Impl need not be specific to the signature of action being implemented;
     // only the implementing function body needs to have all of the specific
@@ -2149,9 +2278,9 @@ template <typename F, typename Impl>
 }
 
 #define GMOCK_INTERNAL_ARG_UNUSED(i, data, el) \
-  , const arg##i##_type& arg##i GTEST_ATTRIBUTE_UNUSED_
-#define GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_                 \
-  const args_type& args GTEST_ATTRIBUTE_UNUSED_ GMOCK_PP_REPEAT( \
+  , [[maybe_unused]] const arg##i##_type& arg##i
+#define GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_          \
+  [[maybe_unused]] const args_type& args GMOCK_PP_REPEAT( \
       GMOCK_INTERNAL_ARG_UNUSED, , 10)
 
 #define GMOCK_INTERNAL_ARG(i, data, el) , const arg##i##_type& arg##i
@@ -2216,8 +2345,8 @@ template <typename F, typename Impl>
     std::shared_ptr<const gmock_Impl> impl_;                                   \
   };                                                                           \
   template <GMOCK_ACTION_TYPENAME_PARAMS_(params)>                             \
-  inline full_name<GMOCK_ACTION_TYPE_PARAMS_(params)> name(                    \
-      GMOCK_ACTION_TYPE_GVALUE_PARAMS_(params)) GTEST_MUST_USE_RESULT_;        \
+  [[nodiscard]] inline full_name<GMOCK_ACTION_TYPE_PARAMS_(params)> name(      \
+      GMOCK_ACTION_TYPE_GVALUE_PARAMS_(params));                               \
   template <GMOCK_ACTION_TYPENAME_PARAMS_(params)>                             \
   inline full_name<GMOCK_ACTION_TYPE_PARAMS_(params)> name(                    \
       GMOCK_ACTION_TYPE_GVALUE_PARAMS_(params)) {                              \
@@ -2252,7 +2381,7 @@ template <typename F, typename Impl>
       return_type gmock_PerformImpl(GMOCK_ACTION_ARG_TYPES_AND_NAMES_) const; \
     };                                                                        \
   };                                                                          \
-  inline name##Action name() GTEST_MUST_USE_RESULT_;                          \
+  [[nodiscard]] inline name##Action name();                                   \
   inline name##Action name() { return name##Action(); }                       \
   template <typename function_type, typename return_type, typename args_type, \
             GMOCK_ACTION_TEMPLATE_ARGS_NAMES_>                                \
@@ -2291,8 +2420,6 @@ template <typename F, typename Impl>
 
 }  // namespace testing
 
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4100
 
 #endif  // GOOGLEMOCK_INCLUDE_GMOCK_GMOCK_ACTIONS_H_

googlemock/include/gmock/gmock-cardinalities.h

@@ -65,7 +65,7 @@ namespace testing {
 // The implementation of a cardinality.
 class CardinalityInterface {
  public:
-  virtual ~CardinalityInterface() {}
+  virtual ~CardinalityInterface() = default;
 
   // Conservative estimate on the lower/upper bound of the number of
   // calls allowed.
@@ -92,7 +92,7 @@ class GTEST_API_ Cardinality {
  public:
   // Constructs a null cardinality.  Needed for storing Cardinality
   // objects in STL containers.
-  Cardinality() {}
+  Cardinality() = default;
 
   // Constructs a Cardinality from its implementation.
   explicit Cardinality(const CardinalityInterface* impl) : impl_(impl) {}

googlemock/include/gmock/gmock-function-mocker.h

@@ -34,9 +34,10 @@
 // IWYU pragma: private, include "gmock/gmock.h"
 // IWYU pragma: friend gmock/.*
 
-#ifndef GOOGLEMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_FUNCTION_MOCKER_H_  // NOLINT
-#define GOOGLEMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_FUNCTION_MOCKER_H_  // NOLINT
+#ifndef GOOGLEMOCK_INCLUDE_GMOCK_GMOCK_FUNCTION_MOCKER_H_
+#define GOOGLEMOCK_INCLUDE_GMOCK_GMOCK_FUNCTION_MOCKER_H_
 
+#include <cstddef>
 #include <type_traits>  // IWYU pragma: keep
 #include <utility>      // IWYU pragma: keep
 
@@ -69,22 +70,22 @@ constexpr bool PrefixOf(const char* a, const char* b) {
   return *a == 0 || (*a == *b && internal::PrefixOf(a + 1, b + 1));
 }
 
-template <int N, int M>
+template <size_t N, size_t M>
 constexpr bool StartsWith(const char (&prefix)[N], const char (&str)[M]) {
   return N <= M && internal::PrefixOf(prefix, str);
 }
 
-template <int N, int M>
+template <size_t N, size_t M>
 constexpr bool EndsWith(const char (&suffix)[N], const char (&str)[M]) {
   return N <= M && internal::PrefixOf(suffix, str + M - N);
 }
 
-template <int N, int M>
+template <size_t N, size_t M>
 constexpr bool Equals(const char (&a)[N], const char (&b)[M]) {
   return N == M && internal::PrefixOf(a, b);
 }
 
-template <int N>
+template <size_t N>
 constexpr bool ValidateSpec(const char (&spec)[N]) {
   return internal::Equals("const", spec) ||
          internal::Equals("override", spec) ||
@@ -108,8 +109,11 @@ constexpr bool ValidateSpec(const char (&spec)[N]) {
 using internal::FunctionMocker;
 }  // namespace testing
 
-#define MOCK_METHOD(...) \
-  GMOCK_PP_VARIADIC_CALL(GMOCK_INTERNAL_MOCK_METHOD_ARG_, __VA_ARGS__)
+#define MOCK_METHOD(...)                                               \
+  GMOCK_INTERNAL_WARNING_PUSH()                                        \
+  GMOCK_INTERNAL_WARNING_CLANG(ignored, "-Wunused-member-function")    \
+  GMOCK_PP_VARIADIC_CALL(GMOCK_INTERNAL_MOCK_METHOD_ARG_, __VA_ARGS__) \
+  GMOCK_INTERNAL_WARNING_POP()
 
 #define GMOCK_INTERNAL_MOCK_METHOD_ARG_1(...) \
   GMOCK_INTERNAL_WRONG_ARITY(__VA_ARGS__)
@@ -177,8 +181,9 @@ using internal::FunctionMocker;
       _Signature)>::Result                                                     \
   GMOCK_INTERNAL_EXPAND(_CallType)                                             \
       _MethodName(GMOCK_PP_REPEAT(GMOCK_INTERNAL_PARAMETER, _Signature, _N))   \
-          GMOCK_PP_IF(_Constness, const, ) _RefSpec _NoexceptSpec              \
-          GMOCK_PP_IF(_Override, override, ) GMOCK_PP_IF(_Final, final, ) {    \
+          GMOCK_PP_IF(_Constness, const, )                                     \
+              _RefSpec _NoexceptSpec GMOCK_PP_IF(_Override, override, )        \
+                  GMOCK_PP_IF(_Final, final, ) {                               \
     GMOCK_MOCKER_(_N, _Constness, _MethodName)                                 \
         .SetOwnerAndName(this, #_MethodName);                                  \
     return GMOCK_MOCKER_(_N, _Constness, _MethodName)                          \
@@ -511,4 +516,4 @@ using internal::FunctionMocker;
 #define GMOCK_MOCKER_(arity, constness, Method) \
   GTEST_CONCAT_TOKEN_(gmock##constness##arity##_##Method##_, __LINE__)
 
-#endif  // GOOGLEMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_FUNCTION_MOCKER_H_
+#endif  // GOOGLEMOCK_INCLUDE_GMOCK_GMOCK_FUNCTION_MOCKER_H_

googlemock/include/gmock/gmock-more-actions.h

@@ -521,14 +521,14 @@
         GMOCK_INTERNAL_DECL_##value_params)                                    \
         GMOCK_PP_IF(GMOCK_PP_IS_EMPTY(GMOCK_INTERNAL_COUNT_##value_params),    \
                     = default;                                                 \
-                    ,                                                          \
-                    : impl_(std::make_shared<gmock_Impl>(                      \
-                        GMOCK_INTERNAL_LIST_##value_params)){})                \
+                    , : impl_(std::make_shared<gmock_Impl>(                    \
+                          GMOCK_INTERNAL_LIST_##value_params)){})              \
             GMOCK_ACTION_CLASS_(name, value_params)(const GMOCK_ACTION_CLASS_( \
                 name, value_params) &) noexcept GMOCK_INTERNAL_DEFN_COPY_      \
-        ##value_params GMOCK_ACTION_CLASS_(name, value_params)(                \
-            GMOCK_ACTION_CLASS_(name, value_params) &&) noexcept               \
-        GMOCK_INTERNAL_DEFN_COPY_##value_params template <typename F>          \
+        ##value_params                                                         \
+        GMOCK_ACTION_CLASS_(name, value_params)(GMOCK_ACTION_CLASS_(           \
+            name, value_params) &&) noexcept GMOCK_INTERNAL_DEFN_COPY_         \
+        ##value_params template <typename F>                                   \
         operator ::testing::Action<F>() const {                                \
       return GMOCK_PP_IF(                                                      \
           GMOCK_PP_IS_EMPTY(GMOCK_INTERNAL_COUNT_##value_params),              \
@@ -550,10 +550,10 @@
   };                                                                           \
   template <GMOCK_INTERNAL_DECL_##template_params                              \
                 GMOCK_INTERNAL_DECL_TYPE_##value_params>                       \
-  GMOCK_ACTION_CLASS_(                                                         \
+  [[nodiscard]] GMOCK_ACTION_CLASS_(                                           \
       name, value_params)<GMOCK_INTERNAL_LIST_##template_params                \
                               GMOCK_INTERNAL_LIST_TYPE_##value_params>         \
-      name(GMOCK_INTERNAL_DECL_##value_params) GTEST_MUST_USE_RESULT_;         \
+      name(GMOCK_INTERNAL_DECL_##value_params);                                \
   template <GMOCK_INTERNAL_DECL_##template_params                              \
                 GMOCK_INTERNAL_DECL_TYPE_##value_params>                       \
   inline GMOCK_ACTION_CLASS_(                                                  \
@@ -582,10 +582,7 @@ namespace testing {
 // the macro definition, as the warnings are generated when the macro
 // is expanded and macro expansion cannot contain #pragma.  Therefore
 // we suppress them here.
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4100)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4100)
 
 namespace internal {
 
@@ -594,21 +591,23 @@ namespace internal {
 // Overloads for other custom-callables are provided in the
 // internal/custom/gmock-generated-actions.h header.
 template <typename F, typename... Args>
-auto InvokeArgument(F f, Args... args) -> decltype(f(args...)) {
-  return f(args...);
+auto InvokeArgument(F &&f,
+                    Args... args) -> decltype(std::forward<F>(f)(args...)) {
+  return std::forward<F>(f)(args...);
 }
 
 template <std::size_t index, typename... Params>
 struct InvokeArgumentAction {
   template <typename... Args,
             typename = typename std::enable_if<(index < sizeof...(Args))>::type>
-  auto operator()(Args&&... args) const -> decltype(internal::InvokeArgument(
-      std::get<index>(std::forward_as_tuple(std::forward<Args>(args)...)),
-      std::declval<const Params&>()...)) {
-    internal::FlatTuple<Args&&...> args_tuple(FlatTupleConstructTag{},
-                                              std::forward<Args>(args)...);
-    return params.Apply([&](const Params&... unpacked_params) {
-      auto&& callable = args_tuple.template Get<index>();
+  auto operator()(Args &&...args) const
+      -> decltype(internal::InvokeArgument(
+          std::get<index>(std::forward_as_tuple(std::forward<Args>(args)...)),
+          std::declval<const Params &>()...)) {
+    internal::FlatTuple<Args &&...> args_tuple(FlatTupleConstructTag{},
+                                               std::forward<Args>(args)...);
+    return params.Apply([&](const Params &...unpacked_params) {
+      auto &&callable = std::move(args_tuple.template Get<index>());
       return internal::InvokeArgument(
           std::forward<decltype(callable)>(callable), unpacked_params...);
     });
@@ -648,14 +647,12 @@ struct InvokeArgumentAction {
 //   later.
 template <std::size_t index, typename... Params>
 internal::InvokeArgumentAction<index, typename std::decay<Params>::type...>
-InvokeArgument(Params&&... params) {
+InvokeArgument(Params &&...params) {
   return {internal::FlatTuple<typename std::decay<Params>::type...>(
       internal::FlatTupleConstructTag{}, std::forward<Params>(params)...)};
 }
 
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4100
 
 }  // namespace testing
 

googlemock/include/gmock/gmock-more-matchers.h

@@ -40,30 +40,58 @@
 #ifndef GOOGLEMOCK_INCLUDE_GMOCK_GMOCK_MORE_MATCHERS_H_
 #define GOOGLEMOCK_INCLUDE_GMOCK_GMOCK_MORE_MATCHERS_H_
 
+#include <ostream>
+#include <string>
+
 #include "gmock/gmock-matchers.h"
 
 namespace testing {
 
 // Silence C4100 (unreferenced formal
 // parameter) for MSVC
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4100)
-#if (_MSC_VER == 1900)
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4100)
+#if defined(_MSC_VER) && (_MSC_VER == 1900)
 // and silence C4800 (C4800: 'int *const ': forcing value
 // to bool 'true' or 'false') for MSVC 14
-#pragma warning(disable : 4800)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4800)
 #endif
 
-// Defines a matcher that matches an empty container. The container must
-// support both size() and empty(), which all STL-like containers provide.
-MATCHER(IsEmpty, negation ? "isn't empty" : "is empty") {
-  if (arg.empty()) {
-    return true;
+namespace internal {
+
+// Implements the polymorphic IsEmpty matcher, which
+// can be used as a Matcher<T> as long as T is either a container that defines
+// empty() and size() (e.g. std::vector or std::string), or a C-style string.
+class IsEmptyMatcher {
+ public:
+  // Matches anything that defines empty() and size().
+  template <typename MatcheeContainerType>
+  bool MatchAndExplain(const MatcheeContainerType& c,
+                       MatchResultListener* listener) const {
+    if (c.empty()) {
+      return true;
+    }
+    *listener << "whose size is " << c.size();
+    return false;
   }
-  *result_listener << "whose size is " << arg.size();
-  return false;
+
+  // Matches C-style strings.
+  bool MatchAndExplain(const char* s, MatchResultListener* listener) const {
+    return MatchAndExplain(std::string(s), listener);
+  }
+
+  // Describes what this matcher matches.
+  void DescribeTo(std::ostream* os) const { *os << "is empty"; }
+
+  void DescribeNegationTo(std::ostream* os) const { *os << "isn't empty"; }
+};
+
+}  // namespace internal
+
+// Creates a polymorphic matcher that matches an empty container or C-style
+// string. The container must support both size() and empty(), which all
+// STL-like containers provide.
+inline PolymorphicMatcher<internal::IsEmptyMatcher> IsEmpty() {
+  return MakePolymorphicMatcher(internal::IsEmptyMatcher());
 }
 
 // Define a matcher that matches a value that evaluates in boolean
@@ -82,9 +110,10 @@ MATCHER(IsFalse, negation ? "is true" : "is false") {
   return !static_cast<bool>(arg);
 }
 
-#ifdef _MSC_VER
-#pragma warning(pop)
+#if defined(_MSC_VER) && (_MSC_VER == 1900)
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4800
 #endif
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4100
 
 }  // namespace testing
 

googlemock/include/gmock/gmock-nice-strict.h

@@ -98,7 +98,7 @@ constexpr bool HasStrictnessModifier() {
 // deregistration. This guarantees that MockClass's constructor and destructor
 // run with the same level of strictness as its instance methods.
 
-#if GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MINGW && \
+#if defined(GTEST_OS_WINDOWS) && !defined(GTEST_OS_WINDOWS_MINGW) && \
     (defined(_MSC_VER) || defined(__clang__))
 // We need to mark these classes with this declspec to ensure that
 // the empty base class optimization is performed.

googlemock/include/gmock/gmock-spec-builders.h

@@ -65,6 +65,7 @@
 #include <functional>
 #include <map>
 #include <memory>
+#include <ostream>
 #include <set>
 #include <sstream>
 #include <string>
@@ -203,6 +204,9 @@ class GTEST_API_ UntypedFunctionMockerBase {
 
   using UntypedExpectations = std::vector<std::shared_ptr<ExpectationBase>>;
 
+  struct UninterestingCallCleanupHandler;
+  struct FailureCleanupHandler;
+
   // Returns an Expectation object that references and co-owns exp,
   // which must be an expectation on this mock function.
   Expectation GetHandleOf(ExpectationBase* exp);
@@ -562,7 +566,7 @@ class ExpectationSet {
   typedef Expectation::Set::value_type value_type;
 
   // Constructs an empty set.
-  ExpectationSet() {}
+  ExpectationSet() = default;
 
   // This single-argument ctor must not be explicit, in order to support the
   //   ExpectationSet es = EXPECT_CALL(...);
@@ -656,7 +660,7 @@ class GTEST_API_ InSequence {
 
   InSequence(const InSequence&) = delete;
   InSequence& operator=(const InSequence&) = delete;
-} GTEST_ATTRIBUTE_UNUSED_;
+};
 
 namespace internal {
 
@@ -706,6 +710,12 @@ class GTEST_API_ ExpectationBase {
   // describes it to the ostream.
   virtual void MaybeDescribeExtraMatcherTo(::std::ostream* os) = 0;
 
+  // Do not rely on this for correctness.
+  // This is only for making human-readable test output easier to understand.
+  void UntypedDescription(std::string description) {
+    description_ = std::move(description);
+  }
+
  protected:
   friend class ::testing::Expectation;
   friend class UntypedFunctionMockerBase;
@@ -772,6 +782,10 @@ class GTEST_API_ ExpectationBase {
     retired_ = true;
   }
 
+  // Returns a human-readable description of this expectation.
+  // Do not rely on this for correctness. It is only for human readability.
+  const std::string& GetDescription() const { return description_; }
+
   // Returns true if and only if this expectation is satisfied.
   bool IsSatisfied() const GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
     g_gmock_mutex.AssertHeld();
@@ -831,6 +845,7 @@ class GTEST_API_ ExpectationBase {
   const char* file_;               // The file that contains the expectation.
   int line_;                       // The line number of the expectation.
   const std::string source_text_;  // The EXPECT_CALL(...) source text.
+  std::string description_;        // User-readable name for the expectation.
   // True if and only if the cardinality is specified explicitly.
   bool cardinality_specified_;
   Cardinality cardinality_;  // The cardinality of the expectation.
@@ -853,7 +868,7 @@ class GTEST_API_ ExpectationBase {
   Clause last_clause_;
   mutable bool action_count_checked_;  // Under mutex_.
   mutable Mutex mutex_;                // Protects action_count_checked_.
-};                                     // class ExpectationBase
+};  // class ExpectationBase
 
 template <typename F>
 class TypedExpectation;
@@ -909,6 +924,13 @@ class TypedExpectation<R(Args...)> : public ExpectationBase {
     return *this;
   }
 
+  // Do not rely on this for correctness.
+  // This is only for making human-readable test output easier to understand.
+  TypedExpectation& Description(std::string name) {
+    ExpectationBase::UntypedDescription(std::move(name));
+    return *this;
+  }
+
   // Implements the .Times() clause.
   TypedExpectation& Times(const Cardinality& a_cardinality) {
     ExpectationBase::UntypedTimes(a_cardinality);
@@ -1199,10 +1221,15 @@ class TypedExpectation<R(Args...)> : public ExpectationBase {
                                          ::std::ostream* why)
       GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
     g_gmock_mutex.AssertHeld();
+    const ::std::string& expectation_description = GetDescription();
     if (IsSaturated()) {
       // We have an excessive call.
       IncrementCallCount();
-      *what << "Mock function called more times than expected - ";
+      *what << "Mock function ";
+      if (!expectation_description.empty()) {
+        *what << "\"" << expectation_description << "\" ";
+      }
+      *what << "called more times than expected - ";
       mocker->DescribeDefaultActionTo(args, what);
       DescribeCallCountTo(why);
 
@@ -1217,7 +1244,11 @@ class TypedExpectation<R(Args...)> : public ExpectationBase {
     }
 
     // Must be done after IncrementCount()!
-    *what << "Mock function call matches " << source_text() << "...\n";
+    *what << "Mock function ";
+    if (!expectation_description.empty()) {
+      *what << "\"" << expectation_description << "\" ";
+    }
+    *what << "call matches " << source_text() << "...\n";
     return &(GetCurrentAction(mocker, args));
   }
 
@@ -1261,10 +1292,10 @@ class MockSpec {
       : function_mocker_(function_mocker), matchers_(matchers) {}
 
   // Adds a new default action spec to the function mocker and returns
-  // the newly created spec.
-  internal::OnCallSpec<F>& InternalDefaultActionSetAt(const char* file,
-                                                      int line, const char* obj,
-                                                      const char* call) {
+  // the newly created spec. .WillByDefault() must be called on the returned
+  // object.
+  [[nodiscard]] internal::OnCallSpec<F>& InternalDefaultActionSetAt(
+      const char* file, int line, const char* obj, const char* call) {
     LogWithLocation(internal::kInfo, file, line,
                     std::string("ON_CALL(") + obj + ", " + call + ") invoked");
     return function_mocker_->AddNewOnCallSpec(file, line, matchers_);
@@ -1368,6 +1399,41 @@ class Cleanup final {
   std::function<void()> f_;
 };
 
+struct UntypedFunctionMockerBase::UninterestingCallCleanupHandler {
+  CallReaction reaction;
+  std::stringstream& ss;
+
+  ~UninterestingCallCleanupHandler() {
+    ReportUninterestingCall(reaction, ss.str());
+  }
+};
+
+struct UntypedFunctionMockerBase::FailureCleanupHandler {
+  std::stringstream& ss;
+  std::stringstream& why;
+  std::stringstream& loc;
+  const ExpectationBase* untyped_expectation;
+  bool found;
+  bool is_excessive;
+
+  ~FailureCleanupHandler() {
+    ss << "\n" << why.str();
+
+    if (!found) {
+      // No expectation matches this call - reports a failure.
+      Expect(false, nullptr, -1, ss.str());
+    } else if (is_excessive) {
+      // We had an upper-bound violation and the failure message is in ss.
+      Expect(false, untyped_expectation->file(), untyped_expectation->line(),
+             ss.str());
+    } else {
+      // We had an expected call and the matching expectation is
+      // described in ss.
+      Log(kInfo, loc.str() + ss.str(), 2);
+    }
+  }
+};
+
 template <typename F>
 class FunctionMocker;
 
@@ -1380,7 +1446,7 @@ class FunctionMocker<R(Args...)> final : public UntypedFunctionMockerBase {
   using ArgumentTuple = std::tuple<Args...>;
   using ArgumentMatcherTuple = std::tuple<Matcher<Args>...>;
 
-  FunctionMocker() {}
+  FunctionMocker() = default;
 
   // There is no generally useful and implementable semantics of
   // copying a mock object, so copying a mock is usually a user error.
@@ -1401,7 +1467,7 @@ class FunctionMocker<R(Args...)> final : public UntypedFunctionMockerBase {
   // function have been satisfied.  If not, it will report Google Test
   // non-fatal failures for the violations.
   ~FunctionMocker() override GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
-    MutexLock l(&g_gmock_mutex);
+    MutexLock l(g_gmock_mutex);
     VerifyAndClearExpectationsLocked();
     Mock::UnregisterLocked(this);
     ClearDefaultActionsLocked();
@@ -1464,7 +1530,7 @@ class FunctionMocker<R(Args...)> final : public UntypedFunctionMockerBase {
     UntypedOnCallSpecs specs_to_delete;
     untyped_on_call_specs_.swap(specs_to_delete);
 
-    g_gmock_mutex.Unlock();
+    g_gmock_mutex.unlock();
     for (UntypedOnCallSpecs::const_iterator it = specs_to_delete.begin();
          it != specs_to_delete.end(); ++it) {
       delete static_cast<const OnCallSpec<F>*>(*it);
@@ -1472,7 +1538,7 @@ class FunctionMocker<R(Args...)> final : public UntypedFunctionMockerBase {
 
     // Lock the mutex again, since the caller expects it to be locked when we
     // return.
-    g_gmock_mutex.Lock();
+    g_gmock_mutex.lock();
   }
 
   // Returns the result of invoking this mock function with the given
@@ -1580,7 +1646,7 @@ class FunctionMocker<R(Args...)> final : public UntypedFunctionMockerBase {
       GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
     const ArgumentTuple& args =
         *static_cast<const ArgumentTuple*>(untyped_args);
-    MutexLock l(&g_gmock_mutex);
+    MutexLock l(g_gmock_mutex);
     TypedExpectation<F>* exp = this->FindMatchingExpectationLocked(args);
     if (exp == nullptr) {  // A match wasn't found.
       this->FormatUnexpectedCallMessageLocked(args, what, why);
@@ -1766,8 +1832,14 @@ R FunctionMocker<R(Args...)>::InvokeWith(ArgumentTuple&& args)
     //
     // We use RAII to do the latter in case R is void or a non-moveable type. In
     // either case we can't assign it to a local variable.
-    const Cleanup report_uninteresting_call(
-        [&] { ReportUninterestingCall(reaction, ss.str()); });
+    //
+    // Note that std::bind() is essential here.
+    // We *don't* use any local callback types (like lambdas).
+    // Doing so slows down compilation dramatically because the *constructor* of
+    // std::function<T> is re-instantiated with different template
+    // parameters each time.
+    const UninterestingCallCleanupHandler report_uninteresting_call = {reaction,
+                                                                       ss};
 
     return PerformActionAndPrintResult(nullptr, std::move(args), ss.str(), ss);
   }
@@ -1811,22 +1883,13 @@ R FunctionMocker<R(Args...)>::InvokeWith(ArgumentTuple&& args)
   //
   // We use RAII to do the latter in case R is void or a non-moveable type. In
   // either case we can't assign it to a local variable.
-  const Cleanup handle_failures([&] {
-    ss << "\n" << why.str();
-
-    if (!found) {
-      // No expectation matches this call - reports a failure.
-      Expect(false, nullptr, -1, ss.str());
-    } else if (is_excessive) {
-      // We had an upper-bound violation and the failure message is in ss.
-      Expect(false, untyped_expectation->file(), untyped_expectation->line(),
-             ss.str());
-    } else {
-      // We had an expected call and the matching expectation is
-      // described in ss.
-      Log(kInfo, loc.str() + ss.str(), 2);
-    }
-  });
+  //
+  // Note that we *don't* use any local callback types (like lambdas) here.
+  // Doing so slows down compilation dramatically because the *constructor* of
+  // std::function<T> is re-instantiated with different template
+  // parameters each time.
+  const FailureCleanupHandler handle_failures = {
+      ss, why, loc, untyped_expectation, found, is_excessive};
 
   return PerformActionAndPrintResult(untyped_action, std::move(args), ss.str(),
                                      ss);

googlemock/include/gmock/gmock.h

@@ -53,13 +53,14 @@
 //
 // where all clauses are optional and WillOnce() can be repeated.
 
-#include "gmock/gmock-actions.h"
-#include "gmock/gmock-cardinalities.h"
-#include "gmock/gmock-function-mocker.h"
-#include "gmock/gmock-matchers.h"
-#include "gmock/gmock-more-actions.h"
-#include "gmock/gmock-more-matchers.h"
-#include "gmock/gmock-nice-strict.h"
+#include "gmock/gmock-actions.h"  // IWYU pragma: export
+#include "gmock/gmock-cardinalities.h"  // IWYU pragma: export
+#include "gmock/gmock-function-mocker.h"  // IWYU pragma: export
+#include "gmock/gmock-matchers.h"  // IWYU pragma: export
+#include "gmock/gmock-more-actions.h"  // IWYU pragma: export
+#include "gmock/gmock-more-matchers.h"  // IWYU pragma: export
+#include "gmock/gmock-nice-strict.h"  // IWYU pragma: export
+#include "gmock/gmock-spec-builders.h"  // IWYU pragma: export
 #include "gmock/internal/gmock-internal-utils.h"
 #include "gmock/internal/gmock-port.h"
 

googlemock/include/gmock/internal/gmock-internal-utils.h

@@ -44,6 +44,7 @@
 #include <ostream>  // NOLINT
 #include <string>
 #include <type_traits>
+#include <utility>
 #include <vector>
 
 #include "gmock/internal/gmock-port.h"
@@ -58,11 +59,7 @@ namespace internal {
 
 // Silence MSVC C4100 (unreferenced formal parameter) and
 // C4805('==': unsafe mix of type 'const int' and type 'const bool')
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4100)
-#pragma warning(disable : 4805)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4100 4805)
 
 // Joins a vector of strings as if they are fields of a tuple; returns
 // the joined string.
@@ -95,6 +92,24 @@ inline Element* GetRawPointer(Element* p) {
   return p;
 }
 
+// Default definitions for all compilers.
+// NOTE: If you implement support for other compilers, make sure to avoid
+// unexpected overlaps.
+// (e.g., Clang also processes #pragma GCC, and clang-cl also handles _MSC_VER.)
+#define GMOCK_INTERNAL_WARNING_PUSH()
+#define GMOCK_INTERNAL_WARNING_CLANG(Level, Name)
+#define GMOCK_INTERNAL_WARNING_POP()
+
+#if defined(__clang__)
+#undef GMOCK_INTERNAL_WARNING_PUSH
+#define GMOCK_INTERNAL_WARNING_PUSH() _Pragma("clang diagnostic push")
+#undef GMOCK_INTERNAL_WARNING_CLANG
+#define GMOCK_INTERNAL_WARNING_CLANG(Level, Warning) \
+  _Pragma(GMOCK_PP_INTERNAL_STRINGIZE(clang diagnostic Level Warning))
+#undef GMOCK_INTERNAL_WARNING_POP
+#define GMOCK_INTERNAL_WARNING_POP() _Pragma("clang diagnostic pop")
+#endif
+
 // MSVC treats wchar_t as a native type usually, but treats it as the
 // same as unsigned short when the compiler option /Zc:wchar_t- is
 // specified.  It defines _NATIVE_WCHAR_T_DEFINED symbol when wchar_t
@@ -210,7 +225,7 @@ class FailureReporterInterface {
   // The type of a failure (either non-fatal or fatal).
   enum FailureType { kNonfatal, kFatal };
 
-  virtual ~FailureReporterInterface() {}
+  virtual ~FailureReporterInterface() = default;
 
   // Reports a failure that occurred at the given source file location.
   virtual void ReportFailure(FailureType type, const char* file, int line,
@@ -283,20 +298,13 @@ GTEST_API_ void Log(LogSeverity severity, const std::string& message,
 //
 class WithoutMatchers {
  private:
-  WithoutMatchers() {}
+  WithoutMatchers() = default;
   friend GTEST_API_ WithoutMatchers GetWithoutMatchers();
 };
 
 // Internal use only: access the singleton instance of WithoutMatchers.
 GTEST_API_ WithoutMatchers GetWithoutMatchers();
 
-// Disable MSVC warnings for infinite recursion, since in this case the
-// recursion is unreachable.
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4717)
-#endif
-
 // Invalid<T>() is usable as an expression of type T, but will terminate
 // the program with an assertion failure if actually run.  This is useful
 // when a value of type T is needed for compilation, but the statement
@@ -304,7 +312,8 @@ GTEST_API_ WithoutMatchers GetWithoutMatchers();
 // crashes).
 template <typename T>
 inline T Invalid() {
-  Assert(false, "", -1, "Internal error: attempt to return invalid value");
+  Assert(/*condition=*/false, /*file=*/"", /*line=*/-1,
+         "Internal error: attempt to return invalid value");
 #if defined(__GNUC__) || defined(__clang__)
   __builtin_unreachable();
 #elif defined(_MSC_VER)
@@ -314,10 +323,6 @@ inline T Invalid() {
 #endif
 }
 
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
-
 // Given a raw type (i.e. having no top-level reference or const
 // modifier) RawContainer that's either an STL-style container or a
 // native array, class StlContainerView<RawContainer> has the
@@ -416,7 +421,7 @@ struct RemoveConstFromKey<std::pair<const K, V> > {
 GTEST_API_ void IllegalDoDefault(const char* file, int line);
 
 template <typename F, typename Tuple, size_t... Idx>
-auto ApplyImpl(F&& f, Tuple&& args, IndexSequence<Idx...>)
+auto ApplyImpl(F&& f, Tuple&& args, std::index_sequence<Idx...>)
     -> decltype(std::forward<F>(f)(
         std::get<Idx>(std::forward<Tuple>(args))...)) {
   return std::forward<F>(f)(std::get<Idx>(std::forward<Tuple>(args))...);
@@ -424,12 +429,13 @@ auto ApplyImpl(F&& f, Tuple&& args, IndexSequence<Idx...>)
 
 // Apply the function to a tuple of arguments.
 template <typename F, typename Tuple>
-auto Apply(F&& f, Tuple&& args) -> decltype(ApplyImpl(
-    std::forward<F>(f), std::forward<Tuple>(args),
-    MakeIndexSequence<std::tuple_size<
-        typename std::remove_reference<Tuple>::type>::value>())) {
+auto Apply(F&& f, Tuple&& args)
+    -> decltype(ApplyImpl(
+        std::forward<F>(f), std::forward<Tuple>(args),
+        std::make_index_sequence<std::tuple_size<
+            typename std::remove_reference<Tuple>::type>::value>())) {
   return ApplyImpl(std::forward<F>(f), std::forward<Tuple>(args),
-                   MakeIndexSequence<std::tuple_size<
+                   std::make_index_sequence<std::tuple_size<
                        typename std::remove_reference<Tuple>::type>::value>());
 }
 
@@ -461,14 +467,16 @@ struct Function<R(Args...)> {
   using MakeResultIgnoredValue = IgnoredValue(Args...);
 };
 
-template <typename R, typename... Args>
-constexpr size_t Function<R(Args...)>::ArgumentCount;
+// Workaround for MSVC error C2039: 'type': is not a member of 'std'
+// when std::tuple_element is used.
+// See: https://github.com/google/googletest/issues/3931
+// Can be replaced with std::tuple_element_t in C++14.
+template <size_t I, typename T>
+using TupleElement = typename std::tuple_element<I, T>::type;
 
 bool Base64Unescape(const std::string& encoded, std::string* decoded);
 
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4100 4805
 
 }  // namespace internal
 }  // namespace testing

googlemock/include/gmock/internal/gmock-port.h

@@ -42,6 +42,7 @@
 
 #include <assert.h>
 #include <stdlib.h>
+
 #include <cstdint>
 #include <iostream>
 
@@ -56,7 +57,7 @@
 #include "gmock/internal/custom/gmock-port.h"
 #include "gtest/internal/gtest-port.h"
 
-#if GTEST_HAS_ABSL
+#if defined(GTEST_HAS_ABSL) && !defined(GTEST_NO_ABSL_FLAGS)
 #include "absl/flags/declare.h"
 #include "absl/flags/flag.h"
 #endif
@@ -73,7 +74,7 @@
 #define GMOCK_FLAG(name) FLAGS_gmock_##name
 
 // Pick a command line flags implementation.
-#if GTEST_HAS_ABSL
+#if defined(GTEST_HAS_ABSL) && !defined(GTEST_NO_ABSL_FLAGS)
 
 // Macros for defining flags.
 #define GMOCK_DEFINE_bool_(name, default_val, doc) \
@@ -95,7 +96,7 @@
 #define GMOCK_FLAG_SET(name, value) \
   (void)(::absl::SetFlag(&GMOCK_FLAG(name), value))
 
-#else  // GTEST_HAS_ABSL
+#else  // defined(GTEST_HAS_ABSL) && !defined(GTEST_NO_ABSL_FLAGS)
 
 // Macros for defining flags.
 #define GMOCK_DEFINE_bool_(name, default_val, doc)  \
@@ -134,6 +135,6 @@
 #define GMOCK_FLAG_GET(name) ::testing::GMOCK_FLAG(name)
 #define GMOCK_FLAG_SET(name, value) (void)(::testing::GMOCK_FLAG(name) = value)
 
-#endif  // GTEST_HAS_ABSL
+#endif  // defined(GTEST_HAS_ABSL) && !defined(GTEST_NO_ABSL_FLAGS)
 
 #endif  // GOOGLEMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_PORT_H_

googlemock/src/gmock-cardinalities.cc

@@ -53,12 +53,12 @@ class BetweenCardinalityImpl : public CardinalityInterface {
       : min_(min >= 0 ? min : 0), max_(max >= min_ ? max : min_) {
     std::stringstream ss;
     if (min < 0) {
-      ss << "The invocation lower bound must be >= 0, "
-         << "but is actually " << min << ".";
+      ss << "The invocation lower bound must be >= 0, " << "but is actually "
+         << min << ".";
       internal::Expect(false, __FILE__, __LINE__, ss.str());
     } else if (max < 0) {
-      ss << "The invocation upper bound must be >= 0, "
-         << "but is actually " << max << ".";
+      ss << "The invocation upper bound must be >= 0, " << "but is actually "
+         << max << ".";
       internal::Expect(false, __FILE__, __LINE__, ss.str());
     } else if (min > max) {
       ss << "The invocation upper bound (" << max

googlemock/src/gmock-internal-utils.cc

@@ -41,8 +41,10 @@
 #include <cctype>
 #include <cstdint>
 #include <cstring>
+#include <iostream>
 #include <ostream>  // NOLINT
 #include <string>
+#include <utility>
 #include <vector>
 
 #include "gmock/gmock.h"
@@ -87,7 +89,7 @@ GTEST_API_ std::string ConvertIdentifierNameToWords(const char* id_name) {
                                  (!IsDigit(prev_char) && IsDigit(*p));
 
     if (IsAlNum(*p)) {
-      if (starts_new_word && result != "") result += ' ';
+      if (starts_new_word && !result.empty()) result += ' ';
       result += ToLower(*p);
     }
   }
@@ -154,7 +156,7 @@ GTEST_API_ void Log(LogSeverity severity, const std::string& message,
   if (!LogIsVisible(severity)) return;
 
   // Ensures that logs from different threads don't interleave.
-  MutexLock l(&g_log_mutex);
+  MutexLock l(g_log_mutex);
 
   if (severity == kWarning) {
     // Prints a GMOCK WARNING marker to make the warnings easily searchable.
@@ -181,7 +183,7 @@ GTEST_API_ void Log(LogSeverity severity, const std::string& message,
     }
     std::cout << "Stack trace:\n"
               << ::testing::internal::GetCurrentOsStackTraceExceptTop(
-                     ::testing::UnitTest::GetInstance(), actual_to_skip);
+                     actual_to_skip);
   }
   std::cout << ::std::flush;
 }
@@ -198,20 +200,26 @@ GTEST_API_ void IllegalDoDefault(const char* file, int line) {
       "the variable in various places.");
 }
 
+constexpr char UndoWebSafeEncoding(char c) {
+  return c == '-' ? '+' : c == '_' ? '/' : c;
+}
+
 constexpr char UnBase64Impl(char c, const char* const base64, char carry) {
-  return *base64 == 0   ? static_cast<char>(65)
-         : *base64 == c ? carry
-                        : UnBase64Impl(c, base64 + 1, carry + 1);
+  return *base64 == 0 ? static_cast<char>(65)
+         : *base64 == c
+             ? carry
+             : UnBase64Impl(c, base64 + 1, static_cast<char>(carry + 1));
 }
 
 template <size_t... I>
-constexpr std::array<char, 256> UnBase64Impl(IndexSequence<I...>,
+constexpr std::array<char, 256> UnBase64Impl(std::index_sequence<I...>,
                                              const char* const base64) {
-  return {{UnBase64Impl(static_cast<char>(I), base64, 0)...}};
+  return {
+      {UnBase64Impl(UndoWebSafeEncoding(static_cast<char>(I)), base64, 0)...}};
 }
 
 constexpr std::array<char, 256> UnBase64(const char* const base64) {
-  return UnBase64Impl(MakeIndexSequence<256>{}, base64);
+  return UnBase64Impl(std::make_index_sequence<256>{}, base64);
 }
 
 static constexpr char kBase64[] =

googlemock/src/gmock-matchers.cc

@@ -53,7 +53,7 @@ GTEST_API_ std::string FormatMatcherDescription(
     bool negation, const char* matcher_name,
     const std::vector<const char*>& param_names, const Strings& param_values) {
   std::string result = ConvertIdentifierNameToWords(matcher_name);
-  if (param_values.size() >= 1) {
+  if (!param_values.empty()) {
     result += " " + JoinAsKeyValueTuple(param_names, param_values);
   }
   return negation ? "not (" + result + ")" : result;
@@ -120,7 +120,7 @@ GTEST_API_ std::string FormatMatcherDescription(
 //   [1] Cormen, et al (2001). "Section 26.2: The Ford-Fulkerson method".
 //       "Introduction to Algorithms (Second ed.)", pp. 651-664.
 //   [2] "Ford-Fulkerson algorithm", Wikipedia,
-//       'http://en.wikipedia.org/wiki/Ford%E2%80%93Fulkerson_algorithm'
+//       'https://en.wikipedia.org/wiki/Ford%E2%80%93Fulkerson_algorithm'
 class MaxBipartiteMatchState {
  public:
   explicit MaxBipartiteMatchState(const MatchMatrix& graph)
@@ -236,9 +236,8 @@ static void LogElementMatcherPairVec(const ElementMatcherPairs& pairs,
   os << "{";
   const char* sep = "";
   for (Iter it = pairs.begin(); it != pairs.end(); ++it) {
-    os << sep << "\n  ("
-       << "element #" << it->first << ", "
-       << "matcher #" << it->second << ")";
+    os << sep << "\n  (" << "element #" << it->first << ", " << "matcher #"
+       << it->second << ")";
     sep = ",";
   }
   os << "\n}";
@@ -370,7 +369,24 @@ void UnorderedElementsAreMatcherImplBase::DescribeNegationToImpl(
 bool UnorderedElementsAreMatcherImplBase::VerifyMatchMatrix(
     const ::std::vector<std::string>& element_printouts,
     const MatchMatrix& matrix, MatchResultListener* listener) const {
-  bool result = true;
+  if (matrix.LhsSize() == 0 && matrix.RhsSize() == 0) {
+    return true;
+  }
+
+  const bool is_exact_match_with_size_discrepency =
+      match_flags() == UnorderedMatcherRequire::ExactMatch &&
+      matrix.LhsSize() != matrix.RhsSize();
+  if (is_exact_match_with_size_discrepency) {
+    // The element count doesn't match.  If the container is empty,
+    // there's no need to explain anything as Google Mock already
+    // prints the empty container. Otherwise we just need to show
+    // how many elements there actually are.
+    if (matrix.LhsSize() != 0 && listener->IsInterested()) {
+      *listener << "which has " << Elements(matrix.LhsSize()) << "\n";
+    }
+  }
+
+  bool result = !is_exact_match_with_size_discrepency;
   ::std::vector<char> element_matched(matrix.LhsSize(), 0);
   ::std::vector<char> matcher_matched(matrix.RhsSize(), 0);
 

googlemock/src/gmock-spec-builders.cc

@@ -40,6 +40,7 @@
 #include <map>
 #include <memory>
 #include <set>
+#include <sstream>
 #include <string>
 #include <unordered_map>
 #include <vector>
@@ -48,17 +49,17 @@
 #include "gtest/gtest.h"
 #include "gtest/internal/gtest-port.h"
 
-#if GTEST_OS_CYGWIN || GTEST_OS_LINUX || GTEST_OS_MAC
+#if defined(GTEST_OS_CYGWIN) || defined(GTEST_OS_LINUX) || defined(GTEST_OS_MAC)
 #include <unistd.h>  // NOLINT
 #endif
+#ifdef GTEST_OS_QURT
+#include <qurt_event.h>
+#endif
 
 // Silence C4800 (C4800: 'int *const ': forcing value
 // to bool 'true' or 'false') for MSVC 15
-#ifdef _MSC_VER
-#if _MSC_VER == 1900
-#pragma warning(push)
-#pragma warning(disable : 4800)
-#endif
+#if defined(_MSC_VER) && (_MSC_VER == 1900)
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4800)
 #endif
 
 namespace testing {
@@ -95,7 +96,7 @@ ExpectationBase::ExpectationBase(const char* a_file, int a_line,
       action_count_checked_(false) {}
 
 // Destructs an ExpectationBase object.
-ExpectationBase::~ExpectationBase() {}
+ExpectationBase::~ExpectationBase() = default;
 
 // Explicitly specifies the cardinality of this expectation.  Used by
 // the subclasses to implement the .Times() clause.
@@ -211,7 +212,7 @@ void ExpectationBase::CheckActionCountIfNotDone() const
     GTEST_LOCK_EXCLUDED_(mutex_) {
   bool should_check = false;
   {
-    MutexLock l(&mutex_);
+    MutexLock l(mutex_);
     if (!action_count_checked_) {
       action_count_checked_ = true;
       should_check = true;
@@ -292,12 +293,12 @@ void ReportUninterestingCall(CallReaction reaction, const std::string& msg) {
       Log(kWarning,
           msg +
               "\nNOTE: You can safely ignore the above warning unless this "
-              "call should not happen.  Do not suppress it by blindly adding "
+              "call should not happen.  Do not suppress it by adding "
               "an EXPECT_CALL() if you don't mean to enforce the call.  "
               "See "
-              "https://github.com/google/googletest/blob/master/docs/"
+              "https://github.com/google/googletest/blob/main/docs/"
               "gmock_cook_book.md#"
-              "knowing-when-to-expect for details.\n",
+              "knowing-when-to-expect-useoncall for details.\n",
           stack_frames_to_skip);
       break;
     default:  // FAIL
@@ -308,7 +309,7 @@ void ReportUninterestingCall(CallReaction reaction, const std::string& msg) {
 UntypedFunctionMockerBase::UntypedFunctionMockerBase()
     : mock_obj_(nullptr), name_("") {}
 
-UntypedFunctionMockerBase::~UntypedFunctionMockerBase() {}
+UntypedFunctionMockerBase::~UntypedFunctionMockerBase() = default;
 
 // Sets the mock object this mock method belongs to, and registers
 // this information in the global mock registry.  Will be called
@@ -317,7 +318,7 @@ UntypedFunctionMockerBase::~UntypedFunctionMockerBase() {}
 void UntypedFunctionMockerBase::RegisterOwner(const void* mock_obj)
     GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
   {
-    MutexLock l(&g_gmock_mutex);
+    MutexLock l(g_gmock_mutex);
     mock_obj_ = mock_obj;
   }
   Mock::Register(mock_obj, this);
@@ -331,7 +332,7 @@ void UntypedFunctionMockerBase::SetOwnerAndName(const void* mock_obj,
     GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
   // We protect name_ under g_gmock_mutex in case this mock function
   // is called from two threads concurrently.
-  MutexLock l(&g_gmock_mutex);
+  MutexLock l(g_gmock_mutex);
   mock_obj_ = mock_obj;
   name_ = name;
 }
@@ -344,7 +345,7 @@ const void* UntypedFunctionMockerBase::MockObject() const
   {
     // We protect mock_obj_ under g_gmock_mutex in case this mock
     // function is called from two threads concurrently.
-    MutexLock l(&g_gmock_mutex);
+    MutexLock l(g_gmock_mutex);
     Assert(mock_obj_ != nullptr, __FILE__, __LINE__,
            "MockObject() must not be called before RegisterOwner() or "
            "SetOwnerAndName() has been called.");
@@ -361,7 +362,7 @@ const char* UntypedFunctionMockerBase::Name() const
   {
     // We protect name_ under g_gmock_mutex in case this mock
     // function is called from two threads concurrently.
-    MutexLock l(&g_gmock_mutex);
+    MutexLock l(g_gmock_mutex);
     Assert(name_ != nullptr, __FILE__, __LINE__,
            "Name() must not be called before SetOwnerAndName() has "
            "been called.");
@@ -406,8 +407,15 @@ bool UntypedFunctionMockerBase::VerifyAndClearExpectationsLocked()
     } else if (!untyped_expectation->IsSatisfied()) {
       expectations_met = false;
       ::std::stringstream ss;
-      ss << "Actual function call count doesn't match "
-         << untyped_expectation->source_text() << "...\n";
+
+      const ::std::string& expectation_name =
+          untyped_expectation->GetDescription();
+      ss << "Actual function ";
+      if (!expectation_name.empty()) {
+        ss << "\"" << expectation_name << "\" ";
+      }
+      ss << "call count doesn't match " << untyped_expectation->source_text()
+         << "...\n";
       // No need to show the source file location of the expectation
       // in the description, as the Expect() call that follows already
       // takes care of it.
@@ -428,14 +436,14 @@ bool UntypedFunctionMockerBase::VerifyAndClearExpectationsLocked()
   UntypedExpectations expectations_to_delete;
   untyped_expectations_.swap(expectations_to_delete);
 
-  g_gmock_mutex.Unlock();
+  g_gmock_mutex.unlock();
   expectations_to_delete.clear();
-  g_gmock_mutex.Lock();
+  g_gmock_mutex.lock();
 
   return expectations_met;
 }
 
-CallReaction intToCallReaction(int mock_behavior) {
+static CallReaction intToCallReaction(int mock_behavior) {
   if (mock_behavior >= kAllow && mock_behavior <= kFail) {
     return static_cast<internal::CallReaction>(mock_behavior);
   }
@@ -482,6 +490,7 @@ class MockObjectRegistry {
   // failure, unless the user explicitly asked us to ignore it.
   ~MockObjectRegistry() {
     if (!GMOCK_FLAG_GET(catch_leaked_mocks)) return;
+    internal::MutexLock l(internal::g_gmock_mutex);
 
     int leaked_count = 0;
     for (StateMap::const_iterator it = states_.begin(); it != states_.end();
@@ -496,7 +505,7 @@ class MockObjectRegistry {
       std::cout << internal::FormatFileLocation(state.first_used_file,
                                                 state.first_used_line);
       std::cout << " ERROR: this mock object";
-      if (state.first_used_test != "") {
+      if (!state.first_used_test.empty()) {
         std::cout << " (used in test " << state.first_used_test_suite << "."
                   << state.first_used_test << ")";
       }
@@ -519,8 +528,12 @@ class MockObjectRegistry {
       // RUN_ALL_TESTS() has already returned when this destructor is
       // called.  Therefore we cannot use the normal Google Test
       // failure reporting mechanism.
-      _exit(1);  // We cannot call exit() as it is not reentrant and
+#ifdef GTEST_OS_QURT
+      qurt_exception_raise_fatal();
+#else
+      _Exit(1);  // We cannot call exit() as it is not reentrant and
                  // may already have been called.
+#endif
     }
   }
 
@@ -546,7 +559,7 @@ UninterestingCallReactionMap() {
 void SetReactionOnUninterestingCalls(uintptr_t mock_obj,
                                      internal::CallReaction reaction)
     GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
-  internal::MutexLock l(&internal::g_gmock_mutex);
+  internal::MutexLock l(internal::g_gmock_mutex);
   UninterestingCallReactionMap()[mock_obj] = reaction;
 }
 
@@ -577,7 +590,7 @@ void Mock::FailUninterestingCalls(uintptr_t mock_obj)
 // entry in the call-reaction table should be removed.
 void Mock::UnregisterCallReaction(uintptr_t mock_obj)
     GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
-  internal::MutexLock l(&internal::g_gmock_mutex);
+  internal::MutexLock l(internal::g_gmock_mutex);
   UninterestingCallReactionMap().erase(static_cast<uintptr_t>(mock_obj));
 }
 
@@ -585,7 +598,7 @@ void Mock::UnregisterCallReaction(uintptr_t mock_obj)
 // made on the given mock object.
 internal::CallReaction Mock::GetReactionOnUninterestingCalls(
     const void* mock_obj) GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
-  internal::MutexLock l(&internal::g_gmock_mutex);
+  internal::MutexLock l(internal::g_gmock_mutex);
   return (UninterestingCallReactionMap().count(
               reinterpret_cast<uintptr_t>(mock_obj)) == 0)
              ? internal::intToCallReaction(
@@ -598,7 +611,7 @@ internal::CallReaction Mock::GetReactionOnUninterestingCalls(
 // objects.
 void Mock::AllowLeak(const void* mock_obj)
     GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
-  internal::MutexLock l(&internal::g_gmock_mutex);
+  internal::MutexLock l(internal::g_gmock_mutex);
   g_mock_object_registry.states()[mock_obj].leakable = true;
 }
 
@@ -607,7 +620,7 @@ void Mock::AllowLeak(const void* mock_obj)
 // Test non-fatal failures and returns false.
 bool Mock::VerifyAndClearExpectations(void* mock_obj)
     GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
-  internal::MutexLock l(&internal::g_gmock_mutex);
+  internal::MutexLock l(internal::g_gmock_mutex);
   return VerifyAndClearExpectationsLocked(mock_obj);
 }
 
@@ -616,7 +629,7 @@ bool Mock::VerifyAndClearExpectations(void* mock_obj)
 // verification was successful.
 bool Mock::VerifyAndClear(void* mock_obj)
     GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
-  internal::MutexLock l(&internal::g_gmock_mutex);
+  internal::MutexLock l(internal::g_gmock_mutex);
   ClearDefaultActionsLocked(mock_obj);
   return VerifyAndClearExpectationsLocked(mock_obj);
 }
@@ -666,7 +679,7 @@ bool Mock::IsStrict(void* mock_obj)
 void Mock::Register(const void* mock_obj,
                     internal::UntypedFunctionMockerBase* mocker)
     GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
-  internal::MutexLock l(&internal::g_gmock_mutex);
+  internal::MutexLock l(internal::g_gmock_mutex);
   g_mock_object_registry.states()[mock_obj].function_mockers.insert(mocker);
 }
 
@@ -676,7 +689,7 @@ void Mock::Register(const void* mock_obj,
 void Mock::RegisterUseByOnCallOrExpectCall(const void* mock_obj,
                                            const char* file, int line)
     GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
-  internal::MutexLock l(&internal::g_gmock_mutex);
+  internal::MutexLock l(internal::g_gmock_mutex);
   MockObjectState& state = g_mock_object_registry.states()[mock_obj];
   if (state.first_used_file == nullptr) {
     state.first_used_file = file;
@@ -734,13 +747,13 @@ void Mock::ClearDefaultActionsLocked(void* mock_obj)
   // needed by VerifyAndClearExpectationsLocked().
 }
 
-Expectation::Expectation() {}
+Expectation::Expectation() = default;
 
 Expectation::Expectation(
     const std::shared_ptr<internal::ExpectationBase>& an_expectation_base)
     : expectation_base_(an_expectation_base) {}
 
-Expectation::~Expectation() {}
+Expectation::~Expectation() = default;
 
 // Adds an expectation to a sequence.
 void Sequence::AddExpectation(const Expectation& expectation) const {
@@ -774,8 +787,6 @@ InSequence::~InSequence() {
 
 }  // namespace testing
 
-#ifdef _MSC_VER
-#if _MSC_VER == 1900
-#pragma warning(pop)
-#endif
+#if defined(_MSC_VER) && (_MSC_VER == 1900)
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4800
 #endif

googlemock/src/gmock.cc

@@ -29,6 +29,8 @@
 
 #include "gmock/gmock.h"
 
+#include <string>
+
 #include "gmock/internal/gmock-port.h"
 
 GMOCK_DEFINE_bool_(catch_leaked_mocks, true,

googlemock/src/gmock_main.cc

@@ -32,8 +32,9 @@
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
 
-#if GTEST_OS_ESP8266 || GTEST_OS_ESP32
-#if GTEST_OS_ESP8266
+#if defined(GTEST_OS_ESP8266) || defined(GTEST_OS_ESP32) || \
+    (defined(GTEST_OS_NRF52) && defined(ARDUINO))
+#ifdef GTEST_OS_ESP8266
 extern "C" {
 #endif
 void setup() {
@@ -43,7 +44,7 @@ void setup() {
   testing::InitGoogleMock();
 }
 void loop() { RUN_ALL_TESTS(); }
-#if GTEST_OS_ESP8266
+#ifdef GTEST_OS_ESP8266
 }
 #endif
 
@@ -55,7 +56,7 @@ void loop() { RUN_ALL_TESTS(); }
 // Windows. See the following link to track the current status of this bug:
 // https://web.archive.org/web/20170912203238/connect.microsoft.com/VisualStudio/feedback/details/394464/wmain-link-error-in-the-static-library
 // // NOLINT
-#if GTEST_OS_WINDOWS_MOBILE
+#ifdef GTEST_OS_WINDOWS_MOBILE
 #include <tchar.h>  // NOLINT
 
 GTEST_API_ int _tmain(int argc, TCHAR** argv) {

googlemock/test/BUILD.bazel

@@ -30,6 +30,7 @@
 #
 #   Bazel Build for Google C++ Testing Framework(Google Test)-googlemock
 
+load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_test")
 load("@rules_python//python:defs.bzl", "py_library", "py_test")
 
 licenses(["notice"])

googlemock/test/gmock-actions_test.cc

@@ -31,33 +31,33 @@
 //
 // This file tests the built-in actions.
 
-// Silence C4100 (unreferenced formal parameter) and C4503 (decorated name
-// length exceeded) for MSVC.
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4100)
-#pragma warning(disable : 4503)
-#if _MSC_VER == 1900
-// and silence C4800 (C4800: 'int *const ': forcing value
-// to bool 'true' or 'false') for MSVC 15
-#pragma warning(disable : 4800)
-#endif
-#endif
-
 #include "gmock/gmock-actions.h"
 
 #include <algorithm>
 #include <functional>
 #include <iterator>
 #include <memory>
+#include <sstream>
 #include <string>
+#include <tuple>
 #include <type_traits>
+#include <utility>
 #include <vector>
 
 #include "gmock/gmock.h"
 #include "gmock/internal/gmock-port.h"
 #include "gtest/gtest-spi.h"
 #include "gtest/gtest.h"
+#include "gtest/internal/gtest-port.h"
+
+// Silence C4100 (unreferenced formal parameter) and C4503 (decorated name
+// length exceeded) for MSVC.
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4100 4503)
+#if defined(_MSC_VER) && (_MSC_VER == 1900)
+// and silence C4800 (C4800: 'int *const ': forcing value
+// to bool 'true' or 'false') for MSVC 15
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4800)
+#endif
 
 namespace testing {
 namespace {
@@ -188,7 +188,7 @@ TEST(TypeTraits, IsInvocableRV) {
   struct C {
     int operator()() const { return 0; }
     void operator()(int) & {}
-    std::string operator()(int) && { return ""; };
+    std::string operator()(int) && { return ""; }
   };
 
   // The first overload is callable for const and non-const rvalues and lvalues.
@@ -222,7 +222,8 @@ TEST(TypeTraits, IsInvocableRV) {
   // In C++17 and above, where it's guaranteed that functions can return
   // non-moveable objects, everything should work fine for non-moveable rsult
   // types too.
-#if defined(__cplusplus) && __cplusplus >= 201703L
+  // TODO(b/396121064) - Fix this test under MSVC
+#ifndef _MSC_VER
   {
     struct NonMoveable {
       NonMoveable() = default;
@@ -243,7 +244,7 @@ TEST(TypeTraits, IsInvocableRV) {
     static_assert(!internal::is_callable_r<int, Callable>::value);
     static_assert(!internal::is_callable_r<NonMoveable, Callable, int>::value);
   }
-#endif  // C++17 and above
+#endif  // _MSC_VER
 
   // Nothing should choke when we try to call other arguments besides directly
   // callable objects, but they should not show up as callable.
@@ -440,15 +441,15 @@ TEST(DefaultValueDeathTest, GetReturnsBuiltInDefaultValueWhenUnset) {
 
   EXPECT_EQ(0, DefaultValue<int>::Get());
 
-  EXPECT_DEATH_IF_SUPPORTED({ DefaultValue<MyNonDefaultConstructible>::Get(); },
-                            "");
+  EXPECT_DEATH_IF_SUPPORTED(
+      { DefaultValue<MyNonDefaultConstructible>::Get(); }, "");
 }
 
 TEST(DefaultValueTest, GetWorksForMoveOnlyIfSet) {
   EXPECT_TRUE(DefaultValue<std::unique_ptr<int>>::Exists());
   EXPECT_TRUE(DefaultValue<std::unique_ptr<int>>::Get() == nullptr);
   DefaultValue<std::unique_ptr<int>>::SetFactory(
-      [] { return std::unique_ptr<int>(new int(42)); });
+      [] { return std::make_unique<int>(42); });
   EXPECT_TRUE(DefaultValue<std::unique_ptr<int>>::Exists());
   std::unique_ptr<int> i = DefaultValue<std::unique_ptr<int>>::Get();
   EXPECT_EQ(42, *i);
@@ -466,7 +467,7 @@ TEST(DefaultValueOfReferenceTest, IsInitiallyUnset) {
   EXPECT_FALSE(DefaultValue<MyNonDefaultConstructible&>::IsSet());
 }
 
-// Tests that DefaultValue<T&>::Exists is false initiallly.
+// Tests that DefaultValue<T&>::Exists is false initially.
 TEST(DefaultValueOfReferenceTest, IsInitiallyNotExisting) {
   EXPECT_FALSE(DefaultValue<int&>::Exists());
   EXPECT_FALSE(DefaultValue<MyDefaultConstructible&>::Exists());
@@ -504,8 +505,8 @@ TEST(DefaultValueOfReferenceDeathTest, GetReturnsBuiltInDefaultValueWhenUnset) {
   EXPECT_FALSE(DefaultValue<MyNonDefaultConstructible&>::IsSet());
 
   EXPECT_DEATH_IF_SUPPORTED({ DefaultValue<int&>::Get(); }, "");
-  EXPECT_DEATH_IF_SUPPORTED({ DefaultValue<MyNonDefaultConstructible>::Get(); },
-                            "");
+  EXPECT_DEATH_IF_SUPPORTED(
+      { DefaultValue<MyNonDefaultConstructible>::Get(); }, "");
 }
 
 // Tests that ActionInterface can be implemented by defining the
@@ -684,7 +685,7 @@ TEST(ReturnTest, SupportsReferenceLikeReturnType) {
   // A reference wrapper for std::vector<int>, implicitly convertible from it.
   struct Result {
     const std::vector<int>* v;
-    Result(const std::vector<int>& v) : v(&v) {}  // NOLINT
+    Result(const std::vector<int>& vec) : v(&vec) {}  // NOLINT
   };
 
   // Set up an action for a mock function that returns the reference wrapper
@@ -717,7 +718,7 @@ TEST(ReturnTest, PrefersConversionOperator) {
   struct Out {
     int x;
 
-    explicit Out(const int x) : x(x) {}
+    explicit Out(const int val) : x(val) {}
     explicit Out(const In&) : x(0) {}
   };
 
@@ -807,7 +808,7 @@ TEST(ReturnTest, MoveOnlyResultType) {
                 "");
 }
 
-// Tests that Return(v) is covaraint.
+// Tests that Return(v) is covariant.
 
 struct Base {
   bool operator==(const Base&) { return true; }
@@ -986,7 +987,7 @@ TEST(ReturnRoundRobinTest, WorksForVector) {
 
 class MockClass {
  public:
-  MockClass() {}
+  MockClass() = default;
 
   MOCK_METHOD1(IntFunc, int(bool flag));  // NOLINT
   MOCK_METHOD0(Foo, MyNonDefaultConstructible());
@@ -1029,8 +1030,7 @@ void VoidFunc(bool /* flag */) {}
 
 TEST(DoDefaultDeathTest, DiesIfUsedInCompositeAction) {
   MockClass mock;
-  EXPECT_CALL(mock, IntFunc(_))
-      .WillRepeatedly(DoAll(Invoke(VoidFunc), DoDefault()));
+  EXPECT_CALL(mock, IntFunc(_)).WillRepeatedly(DoAll(VoidFunc, DoDefault()));
 
   // Ideally we should verify the error message as well.  Sadly,
   // EXPECT_DEATH() can only capture stderr, while Google Mock's
@@ -1281,7 +1281,7 @@ int ReturnOne() {
 
 TEST(IgnoreResultTest, MonomorphicAction) {
   g_done = false;
-  Action<void()> a = IgnoreResult(Invoke(ReturnOne));
+  Action<void()> a = IgnoreResult(&ReturnOne);
   a.Perform(std::make_tuple());
   EXPECT_TRUE(g_done);
 }
@@ -1296,7 +1296,7 @@ MyNonDefaultConstructible ReturnMyNonDefaultConstructible(double /* x */) {
 TEST(IgnoreResultTest, ActionReturningClass) {
   g_done = false;
   Action<void(int)> a =
-      IgnoreResult(Invoke(ReturnMyNonDefaultConstructible));  // NOLINT
+      IgnoreResult(&ReturnMyNonDefaultConstructible);  // NOLINT
   a.Perform(std::make_tuple(2));
   EXPECT_TRUE(g_done);
 }
@@ -1410,7 +1410,7 @@ TEST(DoAll, ProvidesLvalueReferencesToInitialActions) {
       void operator()(Obj&&) const { FAIL() << "Unexpected call"; }
     };
 
-    MockFunction<void(Obj &&)> mock;
+    MockFunction<void(Obj&&)> mock;
     EXPECT_CALL(mock, Call)
         .WillOnce(DoAll(InitialAction{}, InitialAction{}, [](Obj&&) {}))
         .WillRepeatedly(DoAll(InitialAction{}, InitialAction{}, [](Obj&&) {}));
@@ -1438,7 +1438,7 @@ TEST(DoAll, ProvidesLvalueReferencesToInitialActions) {
       void operator()(Obj&) && {}
     };
 
-    MockFunction<void(Obj &&)> mock;
+    MockFunction<void(Obj&&)> mock;
     EXPECT_CALL(mock, Call)
         .WillOnce(DoAll(InitialAction{}, InitialAction{}, [](Obj&&) {}));
 
@@ -1476,9 +1476,50 @@ TEST(DoAll, SupportsTypeErasedActions) {
   }
 }
 
+// A multi-action DoAll action should be convertible to a OnceAction, even when
+// its component sub-actions are user-provided types that define only an Action
+// conversion operator. If they supposed being called more than once then they
+// also support being called at most once.
+//
+// Single-arg DoAll just returns its argument, so will prefer the Action<F>
+// overload for WillOnce.
+TEST(DoAll, ConvertibleToOnceActionWithUserProvidedActionConversion) {
+  // Final action.
+  struct CustomFinal final {
+    operator Action<int()>() {  // NOLINT
+      return Return(17);
+    }
+
+    operator Action<int(int, char)>() {  // NOLINT
+      return Return(19);
+    }
+  };
+
+  // Sub-actions.
+  struct CustomInitial final {
+    operator Action<void()>() {  // NOLINT
+      return [] {};
+    }
+
+    operator Action<void(int, char)>() {  // NOLINT
+      return [] {};
+    }
+  };
+
+  {
+    OnceAction<int()> action = DoAll(CustomInitial{}, CustomFinal{});
+    EXPECT_EQ(17, std::move(action).Call());
+  }
+
+  {
+    OnceAction<int(int, char)> action = DoAll(CustomInitial{}, CustomFinal{});
+    EXPECT_EQ(19, std::move(action).Call(0, 0));
+  }
+}
+
 // Tests using WithArgs and with an action that takes 1 argument.
 TEST(WithArgsTest, OneArg) {
-  Action<bool(double x, int n)> a = WithArgs<1>(Invoke(Unary));  // NOLINT
+  Action<bool(double x, int n)> a = WithArgs<1>(Unary);
   EXPECT_TRUE(a.Perform(std::make_tuple(1.5, -1)));
   EXPECT_FALSE(a.Perform(std::make_tuple(1.5, 1)));
 }
@@ -1486,7 +1527,7 @@ TEST(WithArgsTest, OneArg) {
 // Tests using WithArgs with an action that takes 2 arguments.
 TEST(WithArgsTest, TwoArgs) {
   Action<const char*(const char* s, double x, short n)> a =  // NOLINT
-      WithArgs<0, 2>(Invoke(Binary));
+      WithArgs<0, 2>(Binary);
   const char s[] = "Hello";
   EXPECT_EQ(s + 2, a.Perform(std::make_tuple(CharPtr(s), 0.5, Short(2))));
 }
@@ -1502,7 +1543,7 @@ struct ConcatAll {
 // Tests using WithArgs with an action that takes 10 arguments.
 TEST(WithArgsTest, TenArgs) {
   Action<std::string(const char*, const char*, const char*, const char*)> a =
-      WithArgs<0, 1, 2, 3, 2, 1, 0, 1, 2, 3>(Invoke(ConcatAll{}));
+      WithArgs<0, 1, 2, 3, 2, 1, 0, 1, 2, 3>(ConcatAll{});
   EXPECT_EQ("0123210123",
             a.Perform(std::make_tuple(CharPtr("0"), CharPtr("1"), CharPtr("2"),
                                       CharPtr("3"))));
@@ -1527,21 +1568,21 @@ TEST(WithArgsTest, NonInvokeAction) {
 // Tests using WithArgs to pass all original arguments in the original order.
 TEST(WithArgsTest, Identity) {
   Action<int(int x, char y, short z)> a =  // NOLINT
-      WithArgs<0, 1, 2>(Invoke(Ternary));
+      WithArgs<0, 1, 2>(Ternary);
   EXPECT_EQ(123, a.Perform(std::make_tuple(100, Char(20), Short(3))));
 }
 
 // Tests using WithArgs with repeated arguments.
 TEST(WithArgsTest, RepeatedArguments) {
   Action<int(bool, int m, int n)> a =  // NOLINT
-      WithArgs<1, 1, 1, 1>(Invoke(SumOf4));
+      WithArgs<1, 1, 1, 1>(SumOf4);
   EXPECT_EQ(4, a.Perform(std::make_tuple(false, 1, 10)));
 }
 
 // Tests using WithArgs with reversed argument order.
 TEST(WithArgsTest, ReversedArgumentOrder) {
   Action<const char*(short n, const char* input)> a =  // NOLINT
-      WithArgs<1, 0>(Invoke(Binary));
+      WithArgs<1, 0>(Binary);
   const char s[] = "Hello";
   EXPECT_EQ(s + 2, a.Perform(std::make_tuple(Short(2), CharPtr(s))));
 }
@@ -1549,14 +1590,14 @@ TEST(WithArgsTest, ReversedArgumentOrder) {
 // Tests using WithArgs with compatible, but not identical, argument types.
 TEST(WithArgsTest, ArgsOfCompatibleTypes) {
   Action<long(short x, char y, double z, char c)> a =  // NOLINT
-      WithArgs<0, 1, 3>(Invoke(Ternary));
+      WithArgs<0, 1, 3>(Ternary);
   EXPECT_EQ(123,
             a.Perform(std::make_tuple(Short(100), Char(20), 5.6, Char(3))));
 }
 
 // Tests using WithArgs with an action that returns void.
 TEST(WithArgsTest, VoidAction) {
-  Action<void(double x, char c, int n)> a = WithArgs<2, 1>(Invoke(VoidBinary));
+  Action<void(double x, char c, int n)> a = WithArgs<2, 1>(VoidBinary);
   g_done = false;
   a.Perform(std::make_tuple(1.5, 'a', 3));
   EXPECT_TRUE(g_done);
@@ -1596,7 +1637,23 @@ TEST(WithArgsTest, RefQualifiedInnerAction) {
   EXPECT_EQ(19, mock.AsStdFunction()(0, 17));
 }
 
-#if !GTEST_OS_WINDOWS_MOBILE
+// It should be fine to provide an lvalue WithArgsAction to WillOnce, even when
+// the inner action only wants to convert to OnceAction.
+TEST(WithArgsTest, ProvideAsLvalueToWillOnce) {
+  struct SomeAction {
+    operator OnceAction<int(int)>() const {  // NOLINT
+      return [](const int arg) { return arg + 2; };
+    }
+  };
+
+  const auto wa = WithArg<1>(SomeAction{});
+
+  MockFunction<int(int, int)> mock;
+  EXPECT_CALL(mock, Call).WillOnce(wa);
+  EXPECT_EQ(19, mock.AsStdFunction()(0, 17));
+}
+
+#ifndef GTEST_OS_WINDOWS_MOBILE
 
 class SetErrnoAndReturnTest : public testing::Test {
  protected:
@@ -1755,9 +1812,7 @@ TEST(ReturnNewTest, ConstructorThatTakes10Arguments) {
   delete c;
 }
 
-std::unique_ptr<int> UniquePtrSource() {
-  return std::unique_ptr<int>(new int(19));
-}
+std::unique_ptr<int> UniquePtrSource() { return std::make_unique<int>(19); }
 
 std::vector<std::unique_ptr<int>> VectorUniquePtrSource() {
   std::vector<std::unique_ptr<int>> out;
@@ -1767,7 +1822,7 @@ std::vector<std::unique_ptr<int>> VectorUniquePtrSource() {
 
 TEST(MockMethodTest, CanReturnMoveOnlyValue_Return) {
   MockClass mock;
-  std::unique_ptr<int> i(new int(19));
+  std::unique_ptr<int> i = std::make_unique<int>(19);
   EXPECT_CALL(mock, MakeUnique()).WillOnce(Return(ByMove(std::move(i))));
   EXPECT_CALL(mock, MakeVectorUnique())
       .WillOnce(Return(ByMove(VectorUniquePtrSource())));
@@ -1790,7 +1845,7 @@ TEST(MockMethodTest, CanReturnMoveOnlyValue_Return) {
 TEST(MockMethodTest, CanReturnMoveOnlyValue_DoAllReturn) {
   testing::MockFunction<void()> mock_function;
   MockClass mock;
-  std::unique_ptr<int> i(new int(19));
+  std::unique_ptr<int> i = std::make_unique<int>(19);
   EXPECT_CALL(mock_function, Call());
   EXPECT_CALL(mock, MakeUnique())
       .WillOnce(DoAll(InvokeWithoutArgs(&mock_function,
@@ -1806,12 +1861,11 @@ TEST(MockMethodTest, CanReturnMoveOnlyValue_Invoke) {
 
   // Check default value
   DefaultValue<std::unique_ptr<int>>::SetFactory(
-      [] { return std::unique_ptr<int>(new int(42)); });
+      [] { return std::make_unique<int>(42); });
   EXPECT_EQ(42, *mock.MakeUnique());
 
-  EXPECT_CALL(mock, MakeUnique()).WillRepeatedly(Invoke(UniquePtrSource));
-  EXPECT_CALL(mock, MakeVectorUnique())
-      .WillRepeatedly(Invoke(VectorUniquePtrSource));
+  EXPECT_CALL(mock, MakeUnique()).WillRepeatedly(UniquePtrSource);
+  EXPECT_CALL(mock, MakeVectorUnique()).WillRepeatedly(VectorUniquePtrSource);
   std::unique_ptr<int> result1 = mock.MakeUnique();
   EXPECT_EQ(19, *result1);
   std::unique_ptr<int> result2 = mock.MakeUnique();
@@ -1826,14 +1880,14 @@ TEST(MockMethodTest, CanReturnMoveOnlyValue_Invoke) {
 
 TEST(MockMethodTest, CanTakeMoveOnlyValue) {
   MockClass mock;
-  auto make = [](int i) { return std::unique_ptr<int>(new int(i)); };
+  auto make = [](int i) { return std::make_unique<int>(i); };
 
   EXPECT_CALL(mock, TakeUnique(_)).WillRepeatedly([](std::unique_ptr<int> i) {
     return *i;
   });
   // DoAll() does not compile, since it would move from its arguments twice.
   // EXPECT_CALL(mock, TakeUnique(_, _))
-  //     .WillRepeatedly(DoAll(Invoke([](std::unique_ptr<int> j) {}),
+  //     .WillRepeatedly(DoAll([](std::unique_ptr<int> j) {})),
   //     Return(1)));
   EXPECT_CALL(mock, TakeUnique(testing::Pointee(7)))
       .WillOnce(Return(-7))
@@ -2057,9 +2111,7 @@ struct Double {
   }
 };
 
-std::unique_ptr<int> UniqueInt(int i) {
-  return std::unique_ptr<int>(new int(i));
-}
+std::unique_ptr<int> UniqueInt(int i) { return std::make_unique<int>(i); }
 
 TEST(FunctorActionTest, ActionFromFunction) {
   Action<int(int, int&, int*)> a = &Add;
@@ -2165,3 +2217,8 @@ TEST(ActionMacro, LargeArity) {
 
 }  // namespace
 }  // namespace testing
+
+#if defined(_MSC_VER) && (_MSC_VER == 1900)
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4800
+#endif
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4100 4503

googlemock/test/gmock-cardinalities_test.cc

@@ -31,6 +31,8 @@
 //
 // This file tests the built-in cardinalities.
 
+#include <ostream>
+
 #include "gmock/gmock.h"
 #include "gtest/gtest-spi.h"
 #include "gtest/gtest.h"
@@ -50,7 +52,7 @@ using testing::MakeCardinality;
 
 class MockFoo {
  public:
-  MockFoo() {}
+  MockFoo() = default;
   MOCK_METHOD0(Bar, int());  // NOLINT
 
  private:

googlemock/test/gmock-function-mocker_test.cc

@@ -27,18 +27,15 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Silence C4503 (decorated name length exceeded) for MSVC.
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4503)
-#endif
-
 // Google Mock - a framework for writing C++ mock classes.
 //
 // This file tests the function mocker classes.
 #include "gmock/gmock-function-mocker.h"
 
-#if GTEST_OS_WINDOWS
+// Silence C4503 (decorated name length exceeded) for MSVC.
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4503)
+
+#ifdef GTEST_OS_WINDOWS
 // MSDN says the header file to be included for STDMETHOD is BaseTyps.h but
 // we are getting compiler errors if we use basetyps.h, hence including
 // objbase.h for definition of STDMETHOD.
@@ -73,7 +70,7 @@ using testing::TypedEq;
 template <typename T>
 class TemplatedCopyable {
  public:
-  TemplatedCopyable() {}
+  TemplatedCopyable() = default;
 
   template <typename U>
   TemplatedCopyable(const U& other) {}  // NOLINT
@@ -81,7 +78,7 @@ class TemplatedCopyable {
 
 class FooInterface {
  public:
-  virtual ~FooInterface() {}
+  virtual ~FooInterface() = default;
 
   virtual void VoidReturning(int x) = 0;
 
@@ -94,7 +91,7 @@ class FooInterface {
 
   virtual bool TakesNonConstReference(int& n) = 0;  // NOLINT
   virtual std::string TakesConstReference(const int& n) = 0;
-  virtual bool TakesConst(const int x) = 0;
+  virtual bool TakesConst(int x) = 0;
 
   virtual int OverloadedOnArgumentNumber() = 0;
   virtual int OverloadedOnArgumentNumber(int n) = 0;
@@ -123,7 +120,7 @@ class FooInterface {
   virtual int RefQualifiedOverloaded() & = 0;
   virtual int RefQualifiedOverloaded() && = 0;
 
-#if GTEST_OS_WINDOWS
+#ifdef GTEST_OS_WINDOWS
   STDMETHOD_(int, CTNullary)() = 0;
   STDMETHOD_(bool, CTUnary)(int x) = 0;
   STDMETHOD_(int, CTDecimal)
@@ -137,13 +134,10 @@ class FooInterface {
 // significant in determining whether two virtual functions had the same
 // signature. This was fixed in Visual Studio 2008. However, the compiler
 // still emits a warning that alerts about this change in behavior.
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4373)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4373)
 class MockFoo : public FooInterface {
  public:
-  MockFoo() {}
+  MockFoo() = default;
 
   // Makes sure that a mock function parameter can be named.
   MOCK_METHOD(void, VoidReturning, (int n));  // NOLINT
@@ -184,7 +178,7 @@ class MockFoo : public FooInterface {
   MOCK_METHOD(int (*)(bool), ReturnsFunctionPointer1, (int), ());
   MOCK_METHOD(fn_ptr, ReturnsFunctionPointer2, (int), ());
 
-#if GTEST_OS_WINDOWS
+#ifdef GTEST_OS_WINDOWS
   MOCK_METHOD(int, CTNullary, (), (Calltype(STDMETHODCALLTYPE)));
   MOCK_METHOD(bool, CTUnary, (int), (Calltype(STDMETHODCALLTYPE)));
   MOCK_METHOD(int, CTDecimal,
@@ -214,7 +208,7 @@ class MockFoo : public FooInterface {
 
 class LegacyMockFoo : public FooInterface {
  public:
-  LegacyMockFoo() {}
+  LegacyMockFoo() = default;
 
   // Makes sure that a mock function parameter can be named.
   MOCK_METHOD1(VoidReturning, void(int n));  // NOLINT
@@ -254,7 +248,7 @@ class LegacyMockFoo : public FooInterface {
   MOCK_METHOD1(ReturnsFunctionPointer1, int (*(int))(bool));
   MOCK_METHOD1(ReturnsFunctionPointer2, fn_ptr(int));
 
-#if GTEST_OS_WINDOWS
+#ifdef GTEST_OS_WINDOWS
   MOCK_METHOD0_WITH_CALLTYPE(STDMETHODCALLTYPE, CTNullary, int());
   MOCK_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, CTUnary, bool(int));  // NOLINT
   MOCK_METHOD10_WITH_CALLTYPE(STDMETHODCALLTYPE, CTDecimal,
@@ -285,9 +279,7 @@ class LegacyMockFoo : public FooInterface {
   LegacyMockFoo& operator=(const LegacyMockFoo&) = delete;
 };
 
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4373
 
 template <class T>
 class FunctionMockerTest : public testing::Test {
@@ -333,8 +325,8 @@ TYPED_TEST(FunctionMockerTest, MocksBinaryFunction) {
 
 // Tests mocking a decimal function.
 TYPED_TEST(FunctionMockerTest, MocksDecimalFunction) {
-  EXPECT_CALL(this->mock_foo_,
-              Decimal(true, 'a', 0, 0, 1L, A<float>(), Lt(100), 5U, NULL, "hi"))
+  EXPECT_CALL(this->mock_foo_, Decimal(true, 'a', 0, 0, 1L, A<float>(), Lt(100),
+                                       5U, nullptr, "hi"))
       .WillOnce(Return(5));
 
   EXPECT_EQ(5, this->foo_->Decimal(true, 'a', 0, 0, 1, 0, 0, 5, nullptr, "hi"));
@@ -412,7 +404,7 @@ TYPED_TEST(FunctionMockerTest, MocksTypeWithTemplatedCopyCtor) {
   EXPECT_TRUE(this->foo_->TypeWithTemplatedCopyCtor(TemplatedCopyable<int>()));
 }
 
-#if GTEST_OS_WINDOWS
+#ifdef GTEST_OS_WINDOWS
 // Tests mocking a nullary function with calltype.
 TYPED_TEST(FunctionMockerTest, MocksNullaryFunctionWithCallType) {
   EXPECT_CALL(this->mock_foo_, CTNullary())
@@ -495,7 +487,7 @@ TEST(FunctionMockerTest, RefQualified) {
 
 class MockB {
  public:
-  MockB() {}
+  MockB() = default;
 
   MOCK_METHOD(void, DoB, ());
 
@@ -506,7 +498,7 @@ class MockB {
 
 class LegacyMockB {
  public:
-  LegacyMockB() {}
+  LegacyMockB() = default;
 
   MOCK_METHOD0(DoB, void());
 
@@ -542,7 +534,7 @@ TYPED_TEST(ExpectCallTest, UnmentionedFunctionCanBeCalledAnyNumberOfTimes) {
 template <typename T>
 class StackInterface {
  public:
-  virtual ~StackInterface() {}
+  virtual ~StackInterface() = default;
 
   // Template parameter appears in function parameter.
   virtual void Push(const T& value) = 0;
@@ -555,7 +547,7 @@ class StackInterface {
 template <typename T>
 class MockStack : public StackInterface<T> {
  public:
-  MockStack() {}
+  MockStack() = default;
 
   MOCK_METHOD(void, Push, (const T& elem), ());
   MOCK_METHOD(void, Pop, (), (final));
@@ -574,7 +566,7 @@ class MockStack : public StackInterface<T> {
 template <typename T>
 class LegacyMockStack : public StackInterface<T> {
  public:
-  LegacyMockStack() {}
+  LegacyMockStack() = default;
 
   MOCK_METHOD1_T(Push, void(const T& elem));
   MOCK_METHOD0_T(Pop, void());
@@ -628,7 +620,7 @@ TYPED_TEST(TemplateMockTest, MethodWithCommaInReturnTypeWorks) {
   EXPECT_EQ(a_map, mock.ReturnTypeWithComma(1));
 }
 
-#if GTEST_OS_WINDOWS
+#ifdef GTEST_OS_WINDOWS
 // Tests mocking template interfaces with calltype.
 
 template <typename T>
@@ -719,7 +711,7 @@ TYPED_TEST(TemplateMockTestWithCallType, Works) {
 
 class MockOverloadedOnArgNumber {
  public:
-  MockOverloadedOnArgNumber() {}
+  MockOverloadedOnArgNumber() = default;
 
   MY_MOCK_METHODS1_;
 
@@ -731,7 +723,7 @@ class MockOverloadedOnArgNumber {
 
 class LegacyMockOverloadedOnArgNumber {
  public:
-  LegacyMockOverloadedOnArgNumber() {}
+  LegacyMockOverloadedOnArgNumber() = default;
 
   LEGACY_MY_MOCK_METHODS1_;
 
@@ -766,7 +758,7 @@ TYPED_TEST(OverloadedMockMethodTest, CanOverloadOnArgNumberInMacroBody) {
 
 class MockOverloadedOnConstness {
  public:
-  MockOverloadedOnConstness() {}
+  MockOverloadedOnConstness() = default;
 
   MY_MOCK_METHODS2_;
 
@@ -958,6 +950,21 @@ TEST(MockMethodMockFunctionTest, MockMethodSizeOverhead) {
   EXPECT_EQ(sizeof(LegacyMockMethodSizes0), sizeof(MockMethodSizes0));
 }
 
+TEST(MockMethodMockFunctionTest, EnsureNoUnusedMemberFunction) {
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic error "-Wunused-member-function"
+#endif
+  // https://github.com/google/googletest/issues/4052
+  struct Foo {
+    MOCK_METHOD(void, foo, ());
+  };
+  EXPECT_CALL(Foo(), foo()).Times(0);
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+}
+
 void hasTwoParams(int, int);
 void MaybeThrows();
 void DoesntThrow() noexcept;
@@ -987,3 +994,5 @@ TEST(MockMethodMockFunctionTest, NoexceptSpecifierPreserved) {
 
 }  // namespace gmock_function_mocker_test
 }  // namespace testing
+
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4503

googlemock/test/gmock-internal-utils_test.cc

@@ -40,6 +40,7 @@
 #include <memory>
 #include <sstream>
 #include <string>
+#include <tuple>
 #include <vector>
 
 #include "gmock/gmock.h"
@@ -56,7 +57,7 @@
 #include "src/gtest-internal-inl.h"
 #undef GTEST_IMPLEMENTATION_
 
-#if GTEST_OS_CYGWIN
+#ifdef GTEST_OS_CYGWIN
 #include <sys/types.h>  // For ssize_t. NOLINT
 #endif
 
@@ -167,7 +168,7 @@ TEST(KindOfTest, Integer) {
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(unsigned long long));  // NOLINT
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(wchar_t));             // NOLINT
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(size_t));              // NOLINT
-#if GTEST_OS_LINUX || GTEST_OS_MAC || GTEST_OS_CYGWIN
+#if defined(GTEST_OS_LINUX) || defined(GTEST_OS_MAC) || defined(GTEST_OS_CYGWIN)
   // ssize_t is not defined on Windows and possibly some other OSes.
   EXPECT_EQ(kInteger, GMOCK_KIND_OF_(ssize_t));  // NOLINT
 #endif
@@ -544,7 +545,7 @@ TEST(ExpectCallTest, DoesNotLogWhenVerbosityIsError) {
 
 void OnCallLogger() {
   DummyMock mock;
-  ON_CALL(mock, TestMethod());
+  (void)ON_CALL(mock, TestMethod());
 }
 
 // Verifies that ON_CALL logs if the --gmock_verbose flag is set to "info".
@@ -567,7 +568,7 @@ TEST(OnCallTest, DoesNotLogWhenVerbosityIsError) {
 
 void OnCallAnyArgumentLogger() {
   DummyMock mock;
-  ON_CALL(mock, TestMethodArg(_));
+  (void)ON_CALL(mock, TestMethodArg(_));
 }
 
 // Verifies that ON_CALL prints provided _ argument.

googlemock/test/gmock-matchers-arithmetic_test.cc

@@ -31,15 +31,19 @@
 //
 // This file tests some commonly used argument matchers.
 
+#include <cmath>
+#include <limits>
+#include <memory>
+#include <ostream>
+#include <string>
+
+#include "gmock/gmock.h"
+#include "test/gmock-matchers_test.h"
+#include "gtest/gtest.h"
+
 // Silence warning C4244: 'initializing': conversion from 'int' to 'short',
 // possible loss of data and C4100, unreferenced local parameter
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4244)
-#pragma warning(disable : 4100)
-#endif
-
-#include "test/gmock-matchers_test.h"
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4244 4100)
 
 namespace testing {
 namespace gmock_matchers_test {
@@ -395,6 +399,188 @@ TEST(NanSensitiveDoubleNearTest, CanDescribeSelfWithNaNs) {
   EXPECT_EQ("are an almost-equal pair", Describe(m));
 }
 
+// Tests that DistanceFrom() can describe itself properly.
+TEST(DistanceFrom, CanDescribeSelf) {
+  Matcher<double> m = DistanceFrom(1.5, Lt(0.1));
+  EXPECT_EQ(Describe(m), "is < 0.1 away from 1.5");
+
+  m = DistanceFrom(2.5, Gt(0.2));
+  EXPECT_EQ(Describe(m), "is > 0.2 away from 2.5");
+}
+
+// Tests that DistanceFrom() can explain match failure.
+TEST(DistanceFrom, CanExplainMatchFailure) {
+  Matcher<double> m = DistanceFrom(1.5, Lt(0.1));
+  EXPECT_EQ(Explain(m, 2.0), "which is 0.5 away from 1.5");
+}
+
+// Tests that DistanceFrom() matches a double that is within the given range of
+// the given value.
+TEST(DistanceFrom, MatchesDoubleWithinRange) {
+  const Matcher<double> m = DistanceFrom(0.5, Le(0.1));
+  EXPECT_TRUE(m.Matches(0.45));
+  EXPECT_TRUE(m.Matches(0.5));
+  EXPECT_TRUE(m.Matches(0.55));
+  EXPECT_FALSE(m.Matches(0.39));
+  EXPECT_FALSE(m.Matches(0.61));
+}
+
+// Tests that DistanceFrom() matches a double reference that is within the given
+// range of the given value.
+TEST(DistanceFrom, MatchesDoubleRefWithinRange) {
+  const Matcher<const double&> m = DistanceFrom(0.5, Le(0.1));
+  EXPECT_TRUE(m.Matches(0.45));
+  EXPECT_TRUE(m.Matches(0.5));
+  EXPECT_TRUE(m.Matches(0.55));
+  EXPECT_FALSE(m.Matches(0.39));
+  EXPECT_FALSE(m.Matches(0.61));
+}
+
+// Tests that DistanceFrom() can be implicitly converted to a matcher depending
+// on the type of the argument.
+TEST(DistanceFrom, CanBeImplicitlyConvertedToMatcher) {
+  EXPECT_THAT(0.58, DistanceFrom(0.5, Le(0.1)));
+  EXPECT_THAT(0.2, Not(DistanceFrom(0.5, Le(0.1))));
+
+  EXPECT_THAT(0.58f, DistanceFrom(0.5f, Le(0.1f)));
+  EXPECT_THAT(0.7f, Not(DistanceFrom(0.5f, Le(0.1f))));
+}
+
+// Tests that DistanceFrom() can be used on compatible types (i.e. not
+// everything has to be of the same type).
+TEST(DistanceFrom, CanBeUsedOnCompatibleTypes) {
+  EXPECT_THAT(0.58, DistanceFrom(0.5, Le(0.1f)));
+  EXPECT_THAT(0.2, Not(DistanceFrom(0.5, Le(0.1f))));
+
+  EXPECT_THAT(0.58, DistanceFrom(0.5f, Le(0.1)));
+  EXPECT_THAT(0.2, Not(DistanceFrom(0.5f, Le(0.1))));
+
+  EXPECT_THAT(0.58, DistanceFrom(0.5f, Le(0.1f)));
+  EXPECT_THAT(0.2, Not(DistanceFrom(0.5f, Le(0.1f))));
+
+  EXPECT_THAT(0.58f, DistanceFrom(0.5, Le(0.1)));
+  EXPECT_THAT(0.2f, Not(DistanceFrom(0.5, Le(0.1))));
+
+  EXPECT_THAT(0.58f, DistanceFrom(0.5, Le(0.1f)));
+  EXPECT_THAT(0.2f, Not(DistanceFrom(0.5, Le(0.1f))));
+
+  EXPECT_THAT(0.58f, DistanceFrom(0.5f, Le(0.1)));
+  EXPECT_THAT(0.2f, Not(DistanceFrom(0.5f, Le(0.1))));
+}
+
+// A 2-dimensional point. For testing using DistanceFrom() with a custom type
+// that doesn't have a built-in distance function.
+class Point {
+ public:
+  Point(double x, double y) : x_(x), y_(y) {}
+  double x() const { return x_; }
+  double y() const { return y_; }
+
+ private:
+  double x_;
+  double y_;
+};
+
+// Returns the distance between two points.
+double PointDistance(const Point& lhs, const Point& rhs) {
+  return std::sqrt(std::pow(lhs.x() - rhs.x(), 2) +
+                   std::pow(lhs.y() - rhs.y(), 2));
+}
+
+// Tests that DistanceFrom() can be used on a type with a custom distance
+// function.
+TEST(DistanceFrom, CanBeUsedOnTypeWithCustomDistanceFunction) {
+  const Matcher<Point> m =
+      DistanceFrom(Point(0.5, 0.5), PointDistance, Le(0.1));
+  EXPECT_THAT(Point(0.45, 0.45), m);
+  EXPECT_THAT(Point(0.2, 0.45), Not(m));
+}
+
+// A wrapper around a double value. For testing using DistanceFrom() with a
+// custom type that has neither a built-in distance function nor a built-in
+// distance comparator.
+class Double {
+ public:
+  explicit Double(double value) : value_(value) {}
+  Double(const Double& other) = default;
+  double value() const { return value_; }
+
+  // Defines how to print a Double value. We don't use the AbslStringify API
+  // because googletest doesn't require absl yet.
+  friend void PrintTo(const Double& value, std::ostream* os) {
+    *os << "Double(" << value.value() << ")";
+  }
+
+ private:
+  double value_;
+};
+
+// Returns the distance between two Double values.
+Double DoubleDistance(Double lhs, Double rhs) {
+  return Double(std::abs(lhs.value() - rhs.value()));
+}
+
+MATCHER_P(DoubleLe, rhs, (negation ? "is > " : "is <= ") + PrintToString(rhs)) {
+  return arg.value() <= rhs.value();
+}
+
+// Tests that DistanceFrom() can describe itself properly for a type with a
+// custom printer.
+TEST(DistanceFrom, CanDescribeWithCustomPrinter) {
+  const Matcher<Double> m =
+      DistanceFrom(Double(0.5), DoubleDistance, DoubleLe(Double(0.1)));
+  EXPECT_EQ(Describe(m), "is <= Double(0.1) away from Double(0.5)");
+  EXPECT_EQ(DescribeNegation(m), "is > Double(0.1) away from Double(0.5)");
+}
+
+// Tests that DistanceFrom() can be used with a custom distance function and
+// comparator.
+TEST(DistanceFrom, CanCustomizeDistanceAndComparator) {
+  const Matcher<Double> m =
+      DistanceFrom(Double(0.5), DoubleDistance, DoubleLe(Double(0.1)));
+  EXPECT_TRUE(m.Matches(Double(0.45)));
+  EXPECT_TRUE(m.Matches(Double(0.5)));
+  EXPECT_FALSE(m.Matches(Double(0.39)));
+  EXPECT_FALSE(m.Matches(Double(0.61)));
+}
+
+// For testing using DistanceFrom() with a type that supports both - and abs.
+class Float {
+ public:
+  explicit Float(float value) : value_(value) {}
+  Float(const Float& other) = default;
+  float value() const { return value_; }
+
+ private:
+  float value_ = 0.0f;
+};
+
+// Returns the difference between two Float values. This must be defined in the
+// same namespace as Float.
+Float operator-(const Float& lhs, const Float& rhs) {
+  return Float(lhs.value() - rhs.value());
+}
+
+// Returns the absolute value of a Float value. This must be defined in the
+// same namespace as Float.
+Float abs(Float value) { return Float(std::abs(value.value())); }
+
+// Returns true if and only if the first Float value is less than the second
+// Float value. This must be defined in the same namespace as Float.
+bool operator<(const Float& lhs, const Float& rhs) {
+  return lhs.value() < rhs.value();
+}
+
+// Tests that DistanceFrom() can be used with a type that supports both - and
+// abs.
+TEST(DistanceFrom, CanBeUsedWithTypeThatSupportsBothMinusAndAbs) {
+  const Matcher<Float> m = DistanceFrom(Float(0.5f), Lt(Float(0.1f)));
+  EXPECT_TRUE(m.Matches(Float(0.45f)));
+  EXPECT_TRUE(m.Matches(Float(0.55f)));
+  EXPECT_FALSE(m.Matches(Float(0.39f)));
+  EXPECT_FALSE(m.Matches(Float(0.61f)));
+}
+
 // Tests that Not(m) matches any value that doesn't match m.
 TEST(NotTest, NegatesMatcher) {
   Matcher<int> m;
@@ -558,10 +744,9 @@ TEST_P(AllOfTestP, ExplainsResult) {
   Matcher<int> m;
 
   // Successful match.  Both matchers need to explain.  The second
-  // matcher doesn't give an explanation, so only the first matcher's
-  // explanation is printed.
+  // matcher doesn't give an explanation, so the matcher description is used.
   m = AllOf(GreaterThan(10), Lt(30));
-  EXPECT_EQ("which is 15 more than 10", Explain(m, 25));
+  EXPECT_EQ("which is 15 more than 10, and is < 30", Explain(m, 25));
 
   // Successful match.  Both matchers need to explain.
   m = AllOf(GreaterThan(10), GreaterThan(20));
@@ -571,8 +756,9 @@ TEST_P(AllOfTestP, ExplainsResult) {
   // Successful match.  All matchers need to explain.  The second
   // matcher doesn't given an explanation.
   m = AllOf(GreaterThan(10), Lt(30), GreaterThan(20));
-  EXPECT_EQ("which is 15 more than 10, and which is 5 more than 20",
-            Explain(m, 25));
+  EXPECT_EQ(
+      "which is 15 more than 10, and is < 30, and which is 5 more than 20",
+      Explain(m, 25));
 
   // Successful match.  All matchers need to explain.
   m = AllOf(GreaterThan(10), GreaterThan(20), GreaterThan(30));
@@ -584,13 +770,14 @@ TEST_P(AllOfTestP, ExplainsResult) {
   // Failed match.  The first matcher, which failed, needs to
   // explain.
   m = AllOf(GreaterThan(10), GreaterThan(20));
-  EXPECT_EQ("which is 5 less than 10", Explain(m, 5));
+  EXPECT_EQ("which is 5 less than 10, and which is 15 less than 20",
+            Explain(m, 5));
 
   // Failed match.  The second matcher, which failed, needs to
-  // explain.  Since it doesn't given an explanation, nothing is
+  // explain.  Since it doesn't given an explanation, the matcher text is
   // printed.
   m = AllOf(GreaterThan(10), Lt(30));
-  EXPECT_EQ("", Explain(m, 40));
+  EXPECT_EQ("which doesn't match (is < 30)", Explain(m, 40));
 
   // Failed match.  The second matcher, which failed, needs to
   // explain.
@@ -773,45 +960,43 @@ TEST(AnyOfTest, AnyOfMatcherSafelyCastsMonomorphicMatchers) {
 TEST_P(AnyOfTestP, ExplainsResult) {
   Matcher<int> m;
 
-  // Failed match.  Both matchers need to explain.  The second
-  // matcher doesn't give an explanation, so only the first matcher's
-  // explanation is printed.
+  // Failed match. The second matcher have no explanation (description is used).
   m = AnyOf(GreaterThan(10), Lt(0));
-  EXPECT_EQ("which is 5 less than 10", Explain(m, 5));
+  EXPECT_EQ("which is 5 less than 10, and isn't < 0", Explain(m, 5));
 
-  // Failed match.  Both matchers need to explain.
+  // Failed match. Both matchers have explanations.
   m = AnyOf(GreaterThan(10), GreaterThan(20));
   EXPECT_EQ("which is 5 less than 10, and which is 15 less than 20",
             Explain(m, 5));
 
-  // Failed match.  All matchers need to explain.  The second
-  // matcher doesn't given an explanation.
+  // Failed match. The middle matcher have no explanation.
   m = AnyOf(GreaterThan(10), Gt(20), GreaterThan(30));
-  EXPECT_EQ("which is 5 less than 10, and which is 25 less than 30",
-            Explain(m, 5));
+  EXPECT_EQ(
+      "which is 5 less than 10, and isn't > 20, and which is 25 less than 30",
+      Explain(m, 5));
 
-  // Failed match.  All matchers need to explain.
+  // Failed match. All three matchers have explanations.
   m = AnyOf(GreaterThan(10), GreaterThan(20), GreaterThan(30));
   EXPECT_EQ(
       "which is 5 less than 10, and which is 15 less than 20, "
       "and which is 25 less than 30",
       Explain(m, 5));
 
-  // Successful match.  The first matcher, which succeeded, needs to
-  // explain.
+  // Successful match. The first macher succeeded and has explanation.
   m = AnyOf(GreaterThan(10), GreaterThan(20));
   EXPECT_EQ("which is 5 more than 10", Explain(m, 15));
 
-  // Successful match.  The second matcher, which succeeded, needs to
-  // explain.  Since it doesn't given an explanation, nothing is
-  // printed.
-  m = AnyOf(GreaterThan(10), Lt(30));
-  EXPECT_EQ("", Explain(m, 0));
-
-  // Successful match.  The second matcher, which succeeded, needs to
-  // explain.
+  // Successful match. The second matcher succeeded and has explanation.
   m = AnyOf(GreaterThan(30), GreaterThan(20));
   EXPECT_EQ("which is 5 more than 20", Explain(m, 25));
+
+  // Successful match. The first matcher succeeded and has no explanation.
+  m = AnyOf(Gt(10), Lt(20));
+  EXPECT_EQ("which matches (is > 10)", Explain(m, 15));
+
+  // Successful match. The second matcher succeeded and has no explanation.
+  m = AnyOf(Gt(30), Gt(20));
+  EXPECT_EQ("which matches (is > 20)", Explain(m, 25));
 }
 
 // The following predicate function and predicate functor are for
@@ -954,7 +1139,7 @@ TEST(AllArgsTest, WorksForNonTuple) {
 
 class AllArgsHelper {
  public:
-  AllArgsHelper() {}
+  AllArgsHelper() = default;
 
   MOCK_METHOD2(Helper, int(char x, int y));
 
@@ -975,7 +1160,7 @@ TEST(AllArgsTest, WorksInWithClause) {
 
 class OptionalMatchersHelper {
  public:
-  OptionalMatchersHelper() {}
+  OptionalMatchersHelper() = default;
 
   MOCK_METHOD0(NoArgs, int());
 
@@ -1037,7 +1222,7 @@ class FloatingPointTest : public testing::Test {
             Floating::ReinterpretBits(infinity_bits_ - max_ulps_)),
         further_from_infinity_(
             Floating::ReinterpretBits(infinity_bits_ - max_ulps_ - 1)),
-        max_(Floating::Max()),
+        max_(std::numeric_limits<RawType>::max()),
         nan1_(Floating::ReinterpretBits(Floating::kExponentBitMask | 1)),
         nan2_(Floating::ReinterpretBits(Floating::kExponentBitMask | 200)) {}
 
@@ -1441,7 +1626,7 @@ TEST_F(DoubleNearTest, NanSensitiveDoubleNearCanMatchNaN) {
 }
 
 TEST(NotTest, WorksOnMoveOnlyType) {
-  std::unique_ptr<int> p(new int(3));
+  std::unique_ptr<int> p = std::make_unique<int>(3);
   EXPECT_THAT(p, Pointee(Eq(3)));
   EXPECT_THAT(p, Not(Pointee(Eq(2))));
 }
@@ -1497,13 +1682,13 @@ TEST(AnyOfTest, DoesNotCallAnyOfUnqualified) {
 }  // namespace adl_test
 
 TEST(AllOfTest, WorksOnMoveOnlyType) {
-  std::unique_ptr<int> p(new int(3));
+  std::unique_ptr<int> p = std::make_unique<int>(3);
   EXPECT_THAT(p, AllOf(Pointee(Eq(3)), Pointee(Gt(0)), Pointee(Lt(5))));
   EXPECT_THAT(p, Not(AllOf(Pointee(Eq(3)), Pointee(Gt(0)), Pointee(Lt(3)))));
 }
 
 TEST(AnyOfTest, WorksOnMoveOnlyType) {
-  std::unique_ptr<int> p(new int(3));
+  std::unique_ptr<int> p = std::make_unique<int>(3);
   EXPECT_THAT(p, AnyOf(Pointee(Eq(5)), Pointee(Lt(0)), Pointee(Lt(5))));
   EXPECT_THAT(p, Not(AnyOf(Pointee(Eq(5)), Pointee(Lt(0)), Pointee(Gt(5)))));
 }
@@ -1512,6 +1697,4 @@ TEST(AnyOfTest, WorksOnMoveOnlyType) {
 }  // namespace gmock_matchers_test
 }  // namespace testing
 
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4244 4100

googlemock/test/gmock-matchers-comparisons_test.cc

@@ -31,15 +31,20 @@
 //
 // This file tests some commonly used argument matchers.
 
+#include <functional>
+#include <memory>
+#include <optional>
+#include <string>
+#include <tuple>
+#include <vector>
+
+#include "gmock/gmock.h"
+#include "test/gmock-matchers_test.h"
+#include "gtest/gtest.h"
+
 // Silence warning C4244: 'initializing': conversion from 'int' to 'short',
 // possible loss of data and C4100, unreferenced local parameter
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4244)
-#pragma warning(disable : 4100)
-#endif
-
-#include "test/gmock-matchers_test.h"
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4244 4100)
 
 namespace testing {
 namespace gmock_matchers_test {
@@ -407,9 +412,27 @@ class IntValue {
   int value_;
 };
 
+// For testing casting matchers between compatible types. This is similar to
+// IntValue, but takes a non-const reference to the value, showing MatcherCast
+// works with such types (and doesn't, for example, use a const ref internally).
+class MutableIntView {
+ public:
+  // An int& can be statically (although not implicitly) cast to a
+  // MutableIntView.
+  explicit MutableIntView(int& a_value) : value_(a_value) {}
+
+  int& value() const { return value_; }
+
+ private:
+  int& value_;
+};
+
 // For testing casting matchers between compatible types.
 bool IsPositiveIntValue(const IntValue& foo) { return foo.value() > 0; }
 
+// For testing casting matchers between compatible types.
+bool IsPositiveMutableIntView(MutableIntView foo) { return foo.value() > 0; }
+
 // Tests that MatcherCast<T>(m) works when m is a Matcher<U> where T
 // can be statically converted to U.
 TEST(MatcherCastTest, FromCompatibleType) {
@@ -425,14 +448,34 @@ TEST(MatcherCastTest, FromCompatibleType) {
   // predicate.
   EXPECT_TRUE(m4.Matches(1));
   EXPECT_FALSE(m4.Matches(0));
+
+  Matcher<MutableIntView> m5 = Truly(IsPositiveMutableIntView);
+  Matcher<int> m6 = MatcherCast<int>(m5);
+  // In the following, the arguments 1 and 0 are statically converted to
+  // MutableIntView objects, and then tested by the IsPositiveMutableIntView()
+  // predicate.
+  EXPECT_TRUE(m6.Matches(1));
+  EXPECT_FALSE(m6.Matches(0));
 }
 
 // Tests that MatcherCast<T>(m) works when m is a Matcher<const T&>.
 TEST(MatcherCastTest, FromConstReferenceToNonReference) {
-  Matcher<const int&> m1 = Eq(0);
+  int n = 0;
+  Matcher<const int&> m1 = Ref(n);
   Matcher<int> m2 = MatcherCast<int>(m1);
-  EXPECT_TRUE(m2.Matches(0));
-  EXPECT_FALSE(m2.Matches(1));
+  int n1 = 0;
+  EXPECT_TRUE(m2.Matches(n));
+  EXPECT_FALSE(m2.Matches(n1));
+}
+
+// Tests that MatcherCast<T&>(m) works when m is a Matcher<const T&>.
+TEST(MatcherCastTest, FromConstReferenceToReference) {
+  int n = 0;
+  Matcher<const int&> m1 = Ref(n);
+  Matcher<int&> m2 = MatcherCast<int&>(m1);
+  int n1 = 0;
+  EXPECT_TRUE(m2.Matches(n));
+  EXPECT_FALSE(m2.Matches(n1));
 }
 
 // Tests that MatcherCast<T>(m) works when m is a Matcher<T&>.
@@ -441,6 +484,12 @@ TEST(MatcherCastTest, FromReferenceToNonReference) {
   Matcher<int> m2 = MatcherCast<int>(m1);
   EXPECT_TRUE(m2.Matches(0));
   EXPECT_FALSE(m2.Matches(1));
+
+  // Of course, reference identity isn't preserved since a copy is required.
+  int n = 0;
+  Matcher<int&> m3 = Ref(n);
+  Matcher<int> m4 = MatcherCast<int>(m3);
+  EXPECT_FALSE(m4.Matches(n));
 }
 
 // Tests that MatcherCast<const T&>(m) works when m is a Matcher<T>.
@@ -573,21 +622,48 @@ struct IntReferenceWrapper {
   const int* value;
 };
 
+// Compared the contained values
 bool operator==(const IntReferenceWrapper& a, const IntReferenceWrapper& b) {
-  return a.value == b.value;
+  return *a.value == *b.value;
 }
 
-TEST(MatcherCastTest, ValueIsNotCopied) {
-  int n = 42;
-  Matcher<IntReferenceWrapper> m = MatcherCast<IntReferenceWrapper>(n);
-  // Verify that the matcher holds a reference to n, not to its temporary copy.
-  EXPECT_TRUE(m.Matches(n));
+TEST(MatcherCastTest, ValueIsCopied) {
+  {
+    // When an IntReferenceWrapper is passed.
+    int n = 42;
+    Matcher<IntReferenceWrapper> m =
+        MatcherCast<IntReferenceWrapper>(IntReferenceWrapper(n));
+    {
+      int value = 42;
+      EXPECT_TRUE(m.Matches(value));
+      value = 10;
+      EXPECT_FALSE(m.Matches(value));
+      // This changes the stored reference.
+      n = 10;
+      EXPECT_TRUE(m.Matches(value));
+    }
+  }
+
+  {
+    // When an int is passed.
+    int n = 42;
+    Matcher<IntReferenceWrapper> m = MatcherCast<IntReferenceWrapper>(n);
+    {
+      int value = 42;
+      EXPECT_TRUE(m.Matches(value));
+      value = 10;
+      EXPECT_FALSE(m.Matches(value));
+      // This does not change the stored int.
+      n = 10;
+      EXPECT_FALSE(m.Matches(value));
+    }
+  }
 }
 
 class Base {
  public:
-  virtual ~Base() {}
-  Base() {}
+  virtual ~Base() = default;
+  Base() = default;
 
  private:
   Base(const Base&) = delete;
@@ -645,6 +721,16 @@ TEST(SafeMatcherCastTest, FromBaseClass) {
   EXPECT_FALSE(m4.Matches(d2));
 }
 
+// Tests that SafeMatcherCast<T>(m) works when m is a Matcher<const T&>.
+TEST(SafeMatcherCastTest, FromConstReferenceToNonReference) {
+  int n = 0;
+  Matcher<const int&> m1 = Ref(n);
+  Matcher<int> m2 = SafeMatcherCast<int>(m1);
+  int n1 = 0;
+  EXPECT_TRUE(m2.Matches(n));
+  EXPECT_FALSE(m2.Matches(n1));
+}
+
 // Tests that SafeMatcherCast<T&>(m) works when m is a Matcher<const T&>.
 TEST(SafeMatcherCastTest, FromConstReferenceToReference) {
   int n = 0;
@@ -862,7 +948,7 @@ struct Type {
 };
 
 TEST(TypedEqTest, HasSpecifiedType) {
-  // Verfies that the type of TypedEq<T>(v) is Matcher<T>.
+  // Verifies that the type of TypedEq<T>(v) is Matcher<T>.
   Type<Matcher<int>>::IsTypeOf(TypedEq<int>(5));
   Type<Matcher<double>>::IsTypeOf(TypedEq<double>(5));
 }
@@ -983,6 +1069,30 @@ TEST(ComparisonBaseTest, WorksWithMoveOnly) {
   helper.Call(MoveOnly(1));
 }
 
+TEST(IsEmptyTest, MatchesContainer) {
+  const Matcher<std::vector<int>> m = IsEmpty();
+  std::vector<int> a = {};
+  std::vector<int> b = {1};
+  EXPECT_TRUE(m.Matches(a));
+  EXPECT_FALSE(m.Matches(b));
+}
+
+TEST(IsEmptyTest, MatchesStdString) {
+  const Matcher<std::string> m = IsEmpty();
+  std::string a = "z";
+  std::string b = "";
+  EXPECT_FALSE(m.Matches(a));
+  EXPECT_TRUE(m.Matches(b));
+}
+
+TEST(IsEmptyTest, MatchesCString) {
+  const Matcher<const char*> m = IsEmpty();
+  const char a[] = "";
+  const char b[] = "x";
+  EXPECT_TRUE(m.Matches(a));
+  EXPECT_FALSE(m.Matches(b));
+}
+
 // Tests that IsNull() matches any NULL pointer of any type.
 TEST(IsNullTest, MatchesNullPointer) {
   Matcher<int*> m1 = IsNull();
@@ -1504,7 +1614,7 @@ TEST(PairTest, MatchesCorrectly) {
   EXPECT_THAT(p, Pair(25, "foo"));
   EXPECT_THAT(p, Pair(Ge(20), HasSubstr("o")));
 
-  // 'first' doesnt' match, but 'second' matches.
+  // 'first' doesn't match, but 'second' matches.
   EXPECT_THAT(p, Not(Pair(42, "foo")));
   EXPECT_THAT(p, Not(Pair(Lt(25), "foo")));
 
@@ -1519,7 +1629,7 @@ TEST(PairTest, MatchesCorrectly) {
 
 TEST(PairTest, WorksWithMoveOnly) {
   pair<std::unique_ptr<int>, std::unique_ptr<int>> p;
-  p.second.reset(new int(7));
+  p.second = std::make_unique<int>(7);
   EXPECT_THAT(p, Pair(Eq(nullptr), Ne(nullptr)));
 }
 
@@ -1684,6 +1794,21 @@ TEST(FieldsAreTest, StructuredBindings) {
   };
   EXPECT_THAT(MyVarType16{},
               FieldsAre(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0));
+  struct MyVarType17 {
+    int a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q;
+  };
+  EXPECT_THAT(MyVarType17{},
+              FieldsAre(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0));
+  struct MyVarType18 {
+    int a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r;
+  };
+  EXPECT_THAT(MyVarType18{},
+              FieldsAre(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0));
+  struct MyVarType19 {
+    int a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s;
+  };
+  EXPECT_THAT(MyVarType19{}, FieldsAre(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+                                       0, 0, 0, 0, 0));
 }
 #endif
 
@@ -1727,6 +1852,15 @@ TEST(StartsWithTest, CanDescribeSelf) {
   EXPECT_EQ("starts with \"Hi\"", Describe(m));
 }
 
+TEST(StartsWithTest, WorksWithStringMatcherOnStringViewMatchee) {
+#if GTEST_INTERNAL_HAS_STRING_VIEW
+  EXPECT_THAT(internal::StringView("talk to me goose"),
+              StartsWith(std::string("talk")));
+#else
+  GTEST_SKIP() << "Not applicable without internal::StringView.";
+#endif  // GTEST_INTERNAL_HAS_STRING_VIEW
+}
+
 // Tests EndsWith(s).
 
 TEST(EndsWithTest, MatchesStringWithGivenSuffix) {
@@ -1764,11 +1898,13 @@ TEST(WhenBase64UnescapedTest, MatchesUnescapedBase64Strings) {
   EXPECT_FALSE(m1.Matches("invalid base64"));
   EXPECT_FALSE(m1.Matches("aGVsbG8gd29ybGQ="));  // hello world
   EXPECT_TRUE(m1.Matches("aGVsbG8gd29ybGQh"));   // hello world!
+  EXPECT_TRUE(m1.Matches("+/-_IQ"));             // \xfb\xff\xbf!
 
   const Matcher<const std::string&> m2 = WhenBase64Unescaped(EndsWith("!"));
   EXPECT_FALSE(m2.Matches("invalid base64"));
   EXPECT_FALSE(m2.Matches("aGVsbG8gd29ybGQ="));  // hello world
   EXPECT_TRUE(m2.Matches("aGVsbG8gd29ybGQh"));   // hello world!
+  EXPECT_TRUE(m2.Matches("+/-_IQ"));             // \xfb\xff\xbf!
 
 #if GTEST_INTERNAL_HAS_STRING_VIEW
   const Matcher<const internal::StringView&> m3 =
@@ -1776,6 +1912,7 @@ TEST(WhenBase64UnescapedTest, MatchesUnescapedBase64Strings) {
   EXPECT_FALSE(m3.Matches("invalid base64"));
   EXPECT_FALSE(m3.Matches("aGVsbG8gd29ybGQ="));  // hello world
   EXPECT_TRUE(m3.Matches("aGVsbG8gd29ybGQh"));   // hello world!
+  EXPECT_TRUE(m3.Matches("+/-_IQ"));             // \xfb\xff\xbf!
 #endif  // GTEST_INTERNAL_HAS_STRING_VIEW
 }
 
@@ -2252,22 +2389,19 @@ PolymorphicMatcher<DivisibleByImpl> DivisibleBy(int n) {
   return MakePolymorphicMatcher(DivisibleByImpl(n));
 }
 
-// Tests that when AllOf() fails, only the first failing matcher is
-// asked to explain why.
+// Tests that when AllOf() fails, all failing matchers are asked to explain why.
 TEST(ExplainMatchResultTest, AllOf_False_False) {
   const Matcher<int> m = AllOf(DivisibleBy(4), DivisibleBy(3));
-  EXPECT_EQ("which is 1 modulo 4", Explain(m, 5));
+  EXPECT_EQ("which is 1 modulo 4, and which is 2 modulo 3", Explain(m, 5));
 }
 
-// Tests that when AllOf() fails, only the first failing matcher is
-// asked to explain why.
+// Tests that when AllOf() fails, all failing matchers are asked to explain why.
 TEST(ExplainMatchResultTest, AllOf_False_True) {
   const Matcher<int> m = AllOf(DivisibleBy(4), DivisibleBy(3));
   EXPECT_EQ("which is 2 modulo 4", Explain(m, 6));
 }
 
-// Tests that when AllOf() fails, only the first failing matcher is
-// asked to explain why.
+// Tests that when AllOf() fails, all failing matchers are asked to explain why.
 TEST(ExplainMatchResultTest, AllOf_True_False) {
   const Matcher<int> m = AllOf(Ge(1), DivisibleBy(3));
   EXPECT_EQ("which is 2 modulo 3", Explain(m, 5));
@@ -2280,9 +2414,79 @@ TEST(ExplainMatchResultTest, AllOf_True_True) {
   EXPECT_EQ("which is 0 modulo 2, and which is 0 modulo 3", Explain(m, 6));
 }
 
+// Tests that when AllOf() succeeds, but matchers have no explanation,
+// the matcher description is used.
 TEST(ExplainMatchResultTest, AllOf_True_True_2) {
   const Matcher<int> m = AllOf(Ge(2), Le(3));
-  EXPECT_EQ("", Explain(m, 2));
+  EXPECT_EQ("is >= 2, and is <= 3", Explain(m, 2));
+}
+
+// A matcher that records whether the listener was interested.
+template <typename T>
+class CountingMatcher : public MatcherInterface<T> {
+ public:
+  explicit CountingMatcher(const Matcher<T>& base_matcher,
+                           std::vector<bool>* listener_interested)
+      : base_matcher_(base_matcher),
+        listener_interested_(listener_interested) {}
+
+  bool MatchAndExplain(T x, MatchResultListener* listener) const override {
+    listener_interested_->push_back(listener->IsInterested());
+    return base_matcher_.MatchAndExplain(x, listener);
+  }
+
+  void DescribeTo(ostream* os) const override { base_matcher_.DescribeTo(os); }
+
+ private:
+  Matcher<T> base_matcher_;
+  std::vector<bool>* listener_interested_;
+};
+
+TEST(AllOfTest, DoesNotFormatChildMatchersWhenNotInterested) {
+  std::vector<bool> listener_interested;
+  Matcher<int> matcher =
+      MakeMatcher(new CountingMatcher<int>(Eq(1), &listener_interested));
+  EXPECT_TRUE(matcher.Matches(1));
+  EXPECT_THAT(listener_interested, ElementsAre(false));
+  listener_interested.clear();
+  Matcher<int> all_of_matcher = AllOf(matcher, matcher);
+  EXPECT_TRUE(all_of_matcher.Matches(1));
+  EXPECT_THAT(listener_interested, ElementsAre(false, false));
+  listener_interested.clear();
+  EXPECT_FALSE(all_of_matcher.Matches(0));
+  EXPECT_THAT(listener_interested, ElementsAre(false));
+}
+
+TEST(AnyOfTest, DoesNotFormatChildMatchersWhenNotInterested) {
+  std::vector<bool> listener_interested;
+  Matcher<int> matcher =
+      MakeMatcher(new CountingMatcher<int>(Eq(1), &listener_interested));
+  EXPECT_TRUE(matcher.Matches(1));
+  EXPECT_THAT(listener_interested, ElementsAre(false));
+  listener_interested.clear();
+  Matcher<int> any_of_matcher = AnyOf(matcher, matcher);
+  EXPECT_TRUE(any_of_matcher.Matches(1));
+  EXPECT_THAT(listener_interested, ElementsAre(false));
+  listener_interested.clear();
+  EXPECT_FALSE(any_of_matcher.Matches(0));
+  EXPECT_THAT(listener_interested, ElementsAre(false, false));
+}
+
+TEST(OptionalTest, DoesNotFormatChildMatcherWhenNotInterested) {
+  std::vector<bool> listener_interested;
+  Matcher<int> matcher =
+      MakeMatcher(new CountingMatcher<int>(Eq(1), &listener_interested));
+  EXPECT_TRUE(matcher.Matches(1));
+  EXPECT_THAT(listener_interested, ElementsAre(false));
+  listener_interested.clear();
+  Matcher<std::optional<int>> optional_matcher = Optional(matcher);
+  EXPECT_FALSE(optional_matcher.Matches(std::nullopt));
+  EXPECT_THAT(listener_interested, ElementsAre());
+  EXPECT_TRUE(optional_matcher.Matches(1));
+  EXPECT_THAT(listener_interested, ElementsAre(false));
+  listener_interested.clear();
+  EXPECT_FALSE(matcher.Matches(0));
+  EXPECT_THAT(listener_interested, ElementsAre(false));
 }
 
 INSTANTIATE_GTEST_MATCHER_TEST_P(ExplainmatcherResultTest);
@@ -2313,6 +2517,4 @@ TEST(PolymorphicMatcherTest, CanAccessImpl) {
 }  // namespace gmock_matchers_test
 }  // namespace testing
 
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4244 4100

googlemock/test/gmock-matchers-containers_test.cc

@@ -31,15 +31,26 @@
 //
 // This file tests some commonly used argument matchers.
 
+#include <algorithm>
+#include <array>
+#include <cstddef>
+#include <deque>
+#include <forward_list>
+#include <iterator>
+#include <list>
+#include <memory>
+#include <ostream>
+#include <string>
+#include <tuple>
+#include <vector>
+
+#include "gmock/gmock.h"
+#include "test/gmock-matchers_test.h"
+#include "gtest/gtest.h"
+
 // Silence warning C4244: 'initializing': conversion from 'int' to 'short',
 // possible loss of data and C4100, unreferenced local parameter
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4244)
-#pragma warning(disable : 4100)
-#endif
-
-#include "test/gmock-matchers_test.h"
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4244 4100)
 
 namespace testing {
 namespace gmock_matchers_test {
@@ -206,7 +217,7 @@ TEST(PointeeTest, ReferenceToNonConstRawPointer) {
 TEST(PointeeTest, SmartPointer) {
   const Matcher<std::unique_ptr<int>> m = Pointee(Ge(0));
 
-  std::unique_ptr<int> n(new int(1));
+  std::unique_ptr<int> n = std::make_unique<int>(1);
   EXPECT_TRUE(m.Matches(n));
 }
 
@@ -243,7 +254,7 @@ TEST(PointerTest, RawPointerToConst) {
 }
 
 TEST(PointerTest, SmartPointer) {
-  std::unique_ptr<int> n(new int(10));
+  std::unique_ptr<int> n = std::make_unique<int>(10);
   int* raw_n = n.get();
   const Matcher<std::unique_ptr<int>> m = Pointer(Eq(raw_n));
 
@@ -1182,8 +1193,8 @@ TEST(SizeIsTest, WorksWithMinimalistCustomType) {
 
 TEST(SizeIsTest, CanDescribeSelf) {
   Matcher<vector<int>> m = SizeIs(2);
-  EXPECT_EQ("size is equal to 2", Describe(m));
-  EXPECT_EQ("size isn't equal to 2", DescribeNegation(m));
+  EXPECT_EQ("has a size that is equal to 2", Describe(m));
+  EXPECT_EQ("has a size that isn't equal to 2", DescribeNegation(m));
 }
 
 TEST(SizeIsTest, ExplainsResult) {
@@ -1194,13 +1205,16 @@ TEST(SizeIsTest, ExplainsResult) {
   vector<int> container;
   EXPECT_EQ("whose size 0 doesn't match", Explain(m1, container));
   EXPECT_EQ("whose size 0 matches", Explain(m2, container));
-  EXPECT_EQ("whose size 0 matches", Explain(m3, container));
+  EXPECT_EQ("whose size 0 matches, which matches (is equal to 0)",
+            Explain(m3, container));
   EXPECT_EQ("whose size 0 doesn't match", Explain(m4, container));
   container.push_back(0);
   container.push_back(0);
   EXPECT_EQ("whose size 2 matches", Explain(m1, container));
   EXPECT_EQ("whose size 2 doesn't match", Explain(m2, container));
-  EXPECT_EQ("whose size 2 doesn't match", Explain(m3, container));
+  EXPECT_EQ(
+      "whose size 2 doesn't match, isn't equal to 0, and isn't equal to 3",
+      Explain(m3, container));
   EXPECT_EQ("whose size 2 matches", Explain(m4, container));
 }
 
@@ -1258,10 +1272,11 @@ TEST(WhenSortedByTest, CanDescribeSelf) {
 
 TEST(WhenSortedByTest, ExplainsMatchResult) {
   const int a[] = {2, 1};
-  EXPECT_EQ("which is { 1, 2 } when sorted, whose element #0 doesn't match",
-            Explain(WhenSortedBy(less<int>(), ElementsAre(2, 3)), a));
-  EXPECT_EQ("which is { 1, 2 } when sorted",
-            Explain(WhenSortedBy(less<int>(), ElementsAre(1, 2)), a));
+  EXPECT_EQ(
+      Explain(WhenSortedBy(less<int>(), ElementsAre(2, 3)), a),
+      "which is { 1, 2 } when sorted, whose element #0 (1) isn't equal to 2");
+  EXPECT_EQ(Explain(WhenSortedBy(less<int>(), ElementsAre(1, 2)), a),
+            "which is { 1, 2 } when sorted");
 }
 
 // WhenSorted() is a simple wrapper on WhenSortedBy().  Hence we don't
@@ -1465,8 +1480,10 @@ TEST_P(BeginEndDistanceIsTestP, ExplainsResult) {
             Explain(m1, container));
   EXPECT_EQ("whose distance between begin() and end() 0 matches",
             Explain(m2, container));
-  EXPECT_EQ("whose distance between begin() and end() 0 matches",
-            Explain(m3, container));
+  EXPECT_EQ(
+      "whose distance between begin() and end() 0 matches, which matches (is "
+      "equal to 0)",
+      Explain(m3, container));
   EXPECT_EQ(
       "whose distance between begin() and end() 0 doesn't match, which is 1 "
       "less than 1",
@@ -1477,8 +1494,10 @@ TEST_P(BeginEndDistanceIsTestP, ExplainsResult) {
             Explain(m1, container));
   EXPECT_EQ("whose distance between begin() and end() 2 doesn't match",
             Explain(m2, container));
-  EXPECT_EQ("whose distance between begin() and end() 2 doesn't match",
-            Explain(m3, container));
+  EXPECT_EQ(
+      "whose distance between begin() and end() 2 doesn't match, isn't equal "
+      "to 0, and isn't equal to 3",
+      Explain(m3, container));
   EXPECT_EQ(
       "whose distance between begin() and end() 2 matches, which is 1 more "
       "than 1",
@@ -1758,6 +1777,295 @@ TEST(IsSubsetOfTest, WorksWithMoveOnly) {
   helper.Call(MakeUniquePtrs({2}));
 }
 
+// A container whose iterator returns a temporary. This can iterate over the
+// characters in a string.
+class CharString {
+ public:
+  using value_type = char;
+
+  class const_iterator {
+   public:
+    using iterator_category = std::input_iterator_tag;
+    using value_type = char;
+    using difference_type = std::ptrdiff_t;
+    using pointer = const char*;
+    using reference = const char&;
+
+    // Create an iterator that points to the given character.
+    explicit const_iterator(const char* ptr) : ptr_(ptr) {}
+
+    // Returns the current character. IMPORTANT: this must return a temporary,
+    // not a reference, to test that ElementsAre() works with containers whose
+    // iterators return temporaries.
+    char operator*() const { return *ptr_; }
+
+    // Advances to the next character.
+    const_iterator& operator++() {
+      ++ptr_;
+      return *this;
+    }
+
+    // Compares two iterators.
+    bool operator==(const const_iterator& other) const {
+      return ptr_ == other.ptr_;
+    }
+    bool operator!=(const const_iterator& other) const {
+      return ptr_ != other.ptr_;
+    }
+
+   private:
+    const char* ptr_ = nullptr;
+  };
+
+  // Creates a CharString that contains the given string.
+  explicit CharString(const std::string& s) : s_(s) {}
+
+  // Returns an iterator pointing to the first character in the string.
+  const_iterator begin() const { return const_iterator(s_.c_str()); }
+
+  // Returns an iterator pointing past the last character in the string.
+  const_iterator end() const { return const_iterator(s_.c_str() + s_.size()); }
+
+ private:
+  std::string s_;
+};
+
+// Tests using ElementsAre() with a container whose iterator returns a
+// temporary.
+TEST(ElementsAreTest, WorksWithContainerThatReturnsTempInIterator) {
+  CharString s("abc");
+  EXPECT_THAT(s, ElementsAre('a', 'b', 'c'));
+  EXPECT_THAT(s, Not(ElementsAre('a', 'b', 'd')));
+}
+
+// Tests using ElementsAreArray() with a container whose iterator returns a
+// temporary.
+TEST(ElementsAreArrayTest, WorksWithContainerThatReturnsTempInIterator) {
+  CharString s("abc");
+  EXPECT_THAT(s, ElementsAreArray({'a', 'b', 'c'}));
+  EXPECT_THAT(s, Not(ElementsAreArray({'a', 'b', 'd'})));
+}
+
+// A container whose iterator returns a temporary and is not copy-assignable.
+// This simulates the behavior of the proxy object returned by absl::StrSplit().
+class CharString2 {
+ public:
+  using value_type = char;
+
+  class const_iterator {
+   public:
+    using iterator_category = std::input_iterator_tag;
+    using value_type = char;
+    using difference_type = std::ptrdiff_t;
+    using pointer = const char*;
+    using reference = const char&;
+
+    // Make const_iterator copy-constructible but not copy-assignable,
+    // simulating the behavior of the proxy object returned by absl::StrSplit().
+    const_iterator(const const_iterator&) = default;
+    const_iterator& operator=(const const_iterator&) = delete;
+
+    // Create an iterator that points to the given character.
+    explicit const_iterator(const char* ptr) : ptr_(ptr) {}
+
+    // Returns the current character. IMPORTANT: this must return a temporary,
+    // not a reference, to test that ElementsAre() works with containers whose
+    // iterators return temporaries.
+    char operator*() const { return *ptr_; }
+
+    // Advances to the next character.
+    const_iterator& operator++() {
+      ++ptr_;
+      return *this;
+    }
+
+    // Compares two iterators.
+    bool operator==(const const_iterator& other) const {
+      return ptr_ == other.ptr_;
+    }
+    bool operator!=(const const_iterator& other) const {
+      return ptr_ != other.ptr_;
+    }
+
+   private:
+    const char* ptr_ = nullptr;
+  };
+
+  // Creates a CharString that contains the given string.
+  explicit CharString2(const std::string& s) : s_(s) {}
+
+  // Returns an iterator pointing to the first character in the string.
+  const_iterator begin() const { return const_iterator(s_.c_str()); }
+
+  // Returns an iterator pointing past the last character in the string.
+  const_iterator end() const { return const_iterator(s_.c_str() + s_.size()); }
+
+ private:
+  std::string s_;
+};
+
+// Tests using ElementsAre() with a container whose iterator returns a
+// temporary and is not copy-assignable.
+TEST(ElementsAreTest, WorksWithContainerThatReturnsTempInUnassignableIterator) {
+  CharString2 s("abc");
+  EXPECT_THAT(s, ElementsAre('a', 'b', 'c'));
+  EXPECT_THAT(s, Not(ElementsAre('a', 'b', 'd')));
+}
+
+// Tests using ElementsAreArray() with a container whose iterator returns a
+// temporary and is not copy-assignable.
+TEST(ElementsAreArrayTest,
+     WorksWithContainerThatReturnsTempInUnassignableIterator) {
+  CharString2 s("abc");
+  EXPECT_THAT(s, ElementsAreArray({'a', 'b', 'c'}));
+  EXPECT_THAT(s, Not(ElementsAreArray({'a', 'b', 'd'})));
+}
+
+// A container whose iterator returns a temporary and is neither
+// copy-constructible nor copy-assignable.
+class CharString3 {
+ public:
+  using value_type = char;
+
+  class const_iterator {
+   public:
+    using iterator_category = std::input_iterator_tag;
+    using value_type = char;
+    using difference_type = std::ptrdiff_t;
+    using pointer = const char*;
+    using reference = const char&;
+
+    // Make const_iterator neither copy-constructible nor copy-assignable.
+    const_iterator(const const_iterator&) = delete;
+    const_iterator& operator=(const const_iterator&) = delete;
+
+    // Create an iterator that points to the given character.
+    explicit const_iterator(const char* ptr) : ptr_(ptr) {}
+
+    // Returns the current character. IMPORTANT: this must return a temporary,
+    // not a reference, to test that ElementsAre() works with containers whose
+    // iterators return temporaries.
+    char operator*() const { return *ptr_; }
+
+    // Advances to the next character.
+    const_iterator& operator++() {
+      ++ptr_;
+      return *this;
+    }
+
+    // Compares two iterators.
+    bool operator==(const const_iterator& other) const {
+      return ptr_ == other.ptr_;
+    }
+    bool operator!=(const const_iterator& other) const {
+      return ptr_ != other.ptr_;
+    }
+
+   private:
+    const char* ptr_ = nullptr;
+  };
+
+  // Creates a CharString that contains the given string.
+  explicit CharString3(const std::string& s) : s_(s) {}
+
+  // Returns an iterator pointing to the first character in the string.
+  const_iterator begin() const { return const_iterator(s_.c_str()); }
+
+  // Returns an iterator pointing past the last character in the string.
+  const_iterator end() const { return const_iterator(s_.c_str() + s_.size()); }
+
+ private:
+  std::string s_;
+};
+
+// Tests using ElementsAre() with a container whose iterator returns a
+// temporary and is neither copy-constructible nor copy-assignable.
+TEST(ElementsAreTest, WorksWithContainerThatReturnsTempInUncopyableIterator) {
+  CharString3 s("abc");
+  EXPECT_THAT(s, ElementsAre('a', 'b', 'c'));
+  EXPECT_THAT(s, Not(ElementsAre('a', 'b', 'd')));
+}
+
+// Tests using ElementsAreArray() with a container whose iterator returns a
+// temporary and is neither copy-constructible nor copy-assignable.
+TEST(ElementsAreArrayTest,
+     WorksWithContainerThatReturnsTempInUncopyableIterator) {
+  CharString3 s("abc");
+  EXPECT_THAT(s, ElementsAreArray({'a', 'b', 'c'}));
+  EXPECT_THAT(s, Not(ElementsAreArray({'a', 'b', 'd'})));
+}
+
+// A container whose iterator returns a temporary, is neither
+// copy-constructible nor copy-assignable, and has no member types.
+class CharString4 {
+ public:
+  using value_type = char;
+
+  class const_iterator {
+   public:
+    // Do not define difference_type, etc.
+
+    // Make const_iterator neither copy-constructible nor copy-assignable.
+    const_iterator(const const_iterator&) = delete;
+    const_iterator& operator=(const const_iterator&) = delete;
+
+    // Create an iterator that points to the given character.
+    explicit const_iterator(const char* ptr) : ptr_(ptr) {}
+
+    // Returns the current character. IMPORTANT: this must return a temporary,
+    // not a reference, to test that ElementsAre() works with containers whose
+    // iterators return temporaries.
+    char operator*() const { return *ptr_; }
+
+    // Advances to the next character.
+    const_iterator& operator++() {
+      ++ptr_;
+      return *this;
+    }
+
+    // Compares two iterators.
+    bool operator==(const const_iterator& other) const {
+      return ptr_ == other.ptr_;
+    }
+    bool operator!=(const const_iterator& other) const {
+      return ptr_ != other.ptr_;
+    }
+
+   private:
+    const char* ptr_ = nullptr;
+  };
+
+  // Creates a CharString that contains the given string.
+  explicit CharString4(const std::string& s) : s_(s) {}
+
+  // Returns an iterator pointing to the first character in the string.
+  const_iterator begin() const { return const_iterator(s_.c_str()); }
+
+  // Returns an iterator pointing past the last character in the string.
+  const_iterator end() const { return const_iterator(s_.c_str() + s_.size()); }
+
+ private:
+  std::string s_;
+};
+
+// Tests using ElementsAre() with a container whose iterator returns a
+// temporary, is neither copy-constructible nor copy-assignable, and has no
+// member types.
+TEST(ElementsAreTest, WorksWithContainerWithIteratorWithNoMemberTypes) {
+  CharString4 s("abc");
+  EXPECT_THAT(s, ElementsAre('a', 'b', 'c'));
+  EXPECT_THAT(s, Not(ElementsAre('a', 'b', 'd')));
+}
+
+// Tests using ElementsAreArray() with a container whose iterator returns a
+// temporary, is neither copy-constructible nor copy-assignable, and has no
+// member types.
+TEST(ElementsAreArrayTest, WorksWithContainerWithIteratorWithNoMemberTypes) {
+  CharString4 s("abc");
+  EXPECT_THAT(s, ElementsAreArray({'a', 'b', 'c'}));
+  EXPECT_THAT(s, Not(ElementsAreArray({'a', 'b', 'd'})));
+}
+
 // Tests using ElementsAre() and ElementsAreArray() with stream-like
 // "containers".
 
@@ -1826,8 +2134,8 @@ TEST(UnorderedElementsAreArrayTest, SucceedsWhenExpected) {
 }
 
 TEST(UnorderedElementsAreArrayTest, VectorBool) {
-  const bool a[] = {0, 1, 0, 1, 1};
-  const bool b[] = {1, 0, 1, 1, 0};
+  const bool a[] = {false, true, false, true, true};
+  const bool b[] = {true, false, true, true, false};
   std::vector<bool> expected(std::begin(a), std::end(a));
   std::vector<bool> actual(std::begin(b), std::end(b));
   StringMatchResultListener listener;
@@ -2004,7 +2312,14 @@ TEST_F(UnorderedElementsAreTest, FailMessageCountWrong) {
   StringMatchResultListener listener;
   EXPECT_FALSE(ExplainMatchResult(UnorderedElementsAre(1, 2, 3), v, &listener))
       << listener.str();
-  EXPECT_THAT(listener.str(), Eq("which has 1 element"));
+  EXPECT_THAT(listener.str(),
+              Eq("which has 1 element\n"
+                 "where the following matchers don't match any elements:\n"
+                 "matcher #0: is equal to 1,\n"
+                 "matcher #1: is equal to 2,\n"
+                 "matcher #2: is equal to 3\n"
+                 "and where the following elements don't match any matchers:\n"
+                 "element #0: 4"));
 }
 
 TEST_F(UnorderedElementsAreTest, FailMessageCountWrongZero) {
@@ -2012,7 +2327,11 @@ TEST_F(UnorderedElementsAreTest, FailMessageCountWrongZero) {
   StringMatchResultListener listener;
   EXPECT_FALSE(ExplainMatchResult(UnorderedElementsAre(1, 2, 3), v, &listener))
       << listener.str();
-  EXPECT_THAT(listener.str(), Eq(""));
+  EXPECT_THAT(listener.str(),
+              Eq("where the following matchers don't match any elements:\n"
+                 "matcher #0: is equal to 1,\n"
+                 "matcher #1: is equal to 2,\n"
+                 "matcher #2: is equal to 3"));
 }
 
 TEST_F(UnorderedElementsAreTest, FailMessageUnmatchedMatchers) {
@@ -2127,7 +2446,7 @@ TEST_P(EachTestP, ExplainsMatchResultCorrectly) {
   Matcher<set<int>> m = Each(2);
   EXPECT_EQ("", Explain(m, a));
 
-  Matcher<const int(&)[1]> n = Each(1);  // NOLINT
+  Matcher<const int (&)[1]> n = Each(1);  // NOLINT
 
   const int b[1] = {1};
   EXPECT_EQ("", Explain(n, b));
@@ -2262,7 +2581,7 @@ TEST(PointwiseTest, MakesCopyOfRhs) {
   rhs.push_back(4);
 
   int lhs[] = {1, 2};
-  const Matcher<const int(&)[2]> m = Pointwise(IsHalfOf(), rhs);
+  const Matcher<const int (&)[2]> m = Pointwise(IsHalfOf(), rhs);
   EXPECT_THAT(lhs, m);
 
   // Changing rhs now shouldn't affect m, which made a copy of rhs.
@@ -2390,7 +2709,7 @@ TEST(UnorderedPointwiseTest, MakesCopyOfRhs) {
   rhs.push_back(4);
 
   int lhs[] = {2, 1};
-  const Matcher<const int(&)[2]> m = UnorderedPointwise(IsHalfOf(), rhs);
+  const Matcher<const int (&)[2]> m = UnorderedPointwise(IsHalfOf(), rhs);
   EXPECT_THAT(lhs, m);
 
   // Changing rhs now shouldn't affect m, which made a copy of rhs.
@@ -2428,7 +2747,7 @@ TEST(UnorderedPointwiseTest, RejectsWrongSize) {
   const double lhs[2] = {1, 2};
   const int rhs[1] = {0};
   EXPECT_THAT(lhs, Not(UnorderedPointwise(Gt(), rhs)));
-  EXPECT_EQ("which has 2 elements",
+  EXPECT_EQ("which has 2 elements\n",
             Explain(UnorderedPointwise(Gt(), rhs), lhs));
 
   const int rhs2[3] = {0, 1, 2};
@@ -2477,7 +2796,7 @@ TEST(UnorderedPointwiseTest, WorksWithMoveOnly) {
 }
 
 TEST(PointeeTest, WorksOnMoveOnlyType) {
-  std::unique_ptr<int> p(new int(3));
+  std::unique_ptr<int> p = std::make_unique<int>(3);
   EXPECT_THAT(p, Pointee(Eq(3)));
   EXPECT_THAT(p, Not(Pointee(Eq(2))));
 }
@@ -2641,11 +2960,11 @@ TEST_P(ElementsAreTestP, CanExplainMismatchRightSize) {
   vector<int> v;
   v.push_back(2);
   v.push_back(1);
-  EXPECT_EQ("whose element #0 doesn't match", Explain(m, v));
+  EXPECT_EQ(Explain(m, v), "whose element #0 (2) isn't equal to 1");
 
   v[0] = 1;
-  EXPECT_EQ("whose element #1 doesn't match, which is 4 less than 5",
-            Explain(m, v));
+  EXPECT_EQ(Explain(m, v),
+            "whose element #1 (1) is <= 5, which is 4 less than 5");
 }
 
 TEST(ElementsAreTest, MatchesOneElementVector) {
@@ -2778,7 +3097,7 @@ TEST(ElementsAreTest, WorksWithNativeArrayPassedByReference) {
 
 class NativeArrayPassedAsPointerAndSize {
  public:
-  NativeArrayPassedAsPointerAndSize() {}
+  NativeArrayPassedAsPointerAndSize() = default;
 
   MOCK_METHOD(void, Helper, (int* array, int size));
 
@@ -3045,7 +3364,7 @@ TEST(ContainsTest, SetDoesNotMatchWhenElementIsNotInContainer) {
 
 TEST_P(ContainsTestP, ExplainsMatchResultCorrectly) {
   const int a[2] = {1, 2};
-  Matcher<const int(&)[2]> m = Contains(2);
+  Matcher<const int (&)[2]> m = Contains(2);
   EXPECT_EQ("whose element #1 matches", Explain(m, a));
 
   m = Contains(3);
@@ -3124,6 +3443,4 @@ TEST(ContainsTest, WorksForTwoDimensionalNativeArray) {
 }  // namespace gmock_matchers_test
 }  // namespace testing
 
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4244 4100

googlemock/test/gmock-matchers-misc_test.cc

@@ -31,15 +31,22 @@
 //
 // This file tests some commonly used argument matchers.
 
+#include <array>
+#include <cstdint>
+#include <memory>
+#include <ostream>
+#include <string>
+#include <tuple>
+#include <utility>
+#include <vector>
+
+#include "gmock/gmock.h"
+#include "test/gmock-matchers_test.h"
+#include "gtest/gtest.h"
+
 // Silence warning C4244: 'initializing': conversion from 'int' to 'short',
 // possible loss of data and C4100, unreferenced local parameter
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4244)
-#pragma warning(disable : 4100)
-#endif
-
-#include "test/gmock-matchers_test.h"
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4244 4100)
 
 namespace testing {
 namespace gmock_matchers_test {
@@ -72,7 +79,7 @@ TEST(AddressTest, Const) {
 }
 
 TEST(AddressTest, MatcherDoesntCopy) {
-  std::unique_ptr<int> n(new int(1));
+  std::unique_ptr<int> n = std::make_unique<int>(1);
   const Matcher<std::unique_ptr<int>> m = Address(Eq(&n));
 
   EXPECT_TRUE(m.Matches(n));
@@ -195,14 +202,14 @@ TEST(IsTrueTest, IsTrueIsFalse) {
   EXPECT_THAT(nullptr, Not(IsTrue()));
   EXPECT_THAT(nullptr, IsFalse());
   std::unique_ptr<int> null_unique;
-  std::unique_ptr<int> nonnull_unique(new int(0));
+  std::unique_ptr<int> nonnull_unique = std::make_unique<int>(0);
   EXPECT_THAT(null_unique, Not(IsTrue()));
   EXPECT_THAT(null_unique, IsFalse());
   EXPECT_THAT(nonnull_unique, IsTrue());
   EXPECT_THAT(nonnull_unique, Not(IsFalse()));
 }
 
-#if GTEST_HAS_TYPED_TEST
+#ifdef GTEST_HAS_TYPED_TEST
 // Tests ContainerEq with different container types, and
 // different element types.
 
@@ -668,6 +675,8 @@ TEST_P(MatcherTupleTestP, ExplainsMatchFailure) {
                    // explanation.
 }
 
+#if GTEST_HAS_TYPED_TEST
+
 // Sample optional type implementation with minimal requirements for use with
 // Optional matcher.
 template <typename T>
@@ -685,38 +694,94 @@ class SampleOptional {
   bool has_value_;
 };
 
-TEST(OptionalTest, DescribesSelf) {
-  const Matcher<SampleOptional<int>> m = Optional(Eq(1));
+// Sample optional type implementation with alternative minimal requirements for
+// use with Optional matcher. In particular, while it doesn't have a bool
+// conversion operator, it does have a has_value() method.
+template <typename T>
+class SampleOptionalWithoutBoolConversion {
+ public:
+  using value_type = T;
+  explicit SampleOptionalWithoutBoolConversion(T value)
+      : value_(std::move(value)), has_value_(true) {}
+  SampleOptionalWithoutBoolConversion() : value_(), has_value_(false) {}
+  bool has_value() const { return has_value_; }
+  const T& operator*() const { return value_; }
+
+ private:
+  T value_;
+  bool has_value_;
+};
+
+template <typename T>
+class OptionalTest : public testing::Test {};
+
+using OptionalTestTypes =
+    testing::Types<SampleOptional<int>,
+                   SampleOptionalWithoutBoolConversion<int>>;
+
+TYPED_TEST_SUITE(OptionalTest, OptionalTestTypes);
+
+TYPED_TEST(OptionalTest, DescribesSelf) {
+  const Matcher<TypeParam> m = Optional(Eq(1));
   EXPECT_EQ("value is equal to 1", Describe(m));
 }
 
-TEST(OptionalTest, ExplainsSelf) {
-  const Matcher<SampleOptional<int>> m = Optional(Eq(1));
-  EXPECT_EQ("whose value 1 matches", Explain(m, SampleOptional<int>(1)));
-  EXPECT_EQ("whose value 2 doesn't match", Explain(m, SampleOptional<int>(2)));
+TYPED_TEST(OptionalTest, ExplainsSelf) {
+  const Matcher<TypeParam> m = Optional(Eq(1));
+  EXPECT_EQ("whose value 1 matches", Explain(m, TypeParam(1)));
+  EXPECT_EQ("whose value 2 doesn't match", Explain(m, TypeParam(2)));
 }
 
-TEST(OptionalTest, MatchesNonEmptyOptional) {
-  const Matcher<SampleOptional<int>> m1 = Optional(1);
-  const Matcher<SampleOptional<int>> m2 = Optional(Eq(2));
-  const Matcher<SampleOptional<int>> m3 = Optional(Lt(3));
-  SampleOptional<int> opt(1);
+TYPED_TEST(OptionalTest, MatchesNonEmptyOptional) {
+  const Matcher<TypeParam> m1 = Optional(1);
+  const Matcher<TypeParam> m2 = Optional(Eq(2));
+  const Matcher<TypeParam> m3 = Optional(Lt(3));
+  TypeParam opt(1);
   EXPECT_TRUE(m1.Matches(opt));
   EXPECT_FALSE(m2.Matches(opt));
   EXPECT_TRUE(m3.Matches(opt));
 }
 
-TEST(OptionalTest, DoesNotMatchNullopt) {
-  const Matcher<SampleOptional<int>> m = Optional(1);
-  SampleOptional<int> empty;
+TYPED_TEST(OptionalTest, DoesNotMatchNullopt) {
+  const Matcher<TypeParam> m = Optional(1);
+  TypeParam empty;
   EXPECT_FALSE(m.Matches(empty));
 }
 
-TEST(OptionalTest, WorksWithMoveOnly) {
-  Matcher<SampleOptional<std::unique_ptr<int>>> m = Optional(Eq(nullptr));
-  EXPECT_TRUE(m.Matches(SampleOptional<std::unique_ptr<int>>(nullptr)));
+TYPED_TEST(OptionalTest, ComposesWithMonomorphicMatchersTakingReferences) {
+  const Matcher<const int&> eq1 = Eq(1);
+  const Matcher<const int&> eq2 = Eq(2);
+  TypeParam opt(1);
+  EXPECT_THAT(opt, Optional(eq1));
+  EXPECT_THAT(opt, Optional(Not(eq2)));
+  EXPECT_THAT(opt, Optional(AllOf(eq1, Not(eq2))));
 }
 
+TYPED_TEST(OptionalTest, ComposesWithMonomorphicMatchersRequiringConversion) {
+  const Matcher<int64_t> eq1 = Eq(1);
+  const Matcher<int64_t> eq2 = Eq(2);
+  TypeParam opt(1);
+  EXPECT_THAT(opt, Optional(eq1));
+  EXPECT_THAT(opt, Optional(Not(eq2)));
+  EXPECT_THAT(opt, Optional(AllOf(eq1, Not(eq2))));
+}
+
+template <typename T>
+class MoveOnlyOptionalTest : public testing::Test {};
+
+using MoveOnlyOptionalTestTypes =
+    testing::Types<SampleOptional<std::unique_ptr<int>>,
+                   SampleOptionalWithoutBoolConversion<std::unique_ptr<int>>>;
+
+TYPED_TEST_SUITE(MoveOnlyOptionalTest, MoveOnlyOptionalTestTypes);
+
+TYPED_TEST(MoveOnlyOptionalTest, WorksWithMoveOnly) {
+  Matcher<TypeParam> m = Optional(Eq(nullptr));
+  EXPECT_TRUE(m.Matches(TypeParam(nullptr)));
+}
+
+#endif  // GTEST_HAS_TYPED_TEST
+
 class SampleVariantIntString {
  public:
   SampleVariantIntString(int i) : i_(i), has_int_(true) {}
@@ -863,7 +928,7 @@ TEST(ArgsTest, AcceptsOneTemplateArg) {
 }
 
 TEST(ArgsTest, AcceptsTwoTemplateArgs) {
-  const std::tuple<short, int, long> t(4, 5, 6L);  // NOLINT
+  const std::tuple<short, int, long> t(short{4}, 5, 6L);  // NOLINT
 
   EXPECT_THAT(t, (Args<0, 1>(Lt())));
   EXPECT_THAT(t, (Args<1, 2>(Lt())));
@@ -871,13 +936,13 @@ TEST(ArgsTest, AcceptsTwoTemplateArgs) {
 }
 
 TEST(ArgsTest, AcceptsRepeatedTemplateArgs) {
-  const std::tuple<short, int, long> t(4, 5, 6L);  // NOLINT
+  const std::tuple<short, int, long> t(short{4}, 5, 6L);  // NOLINT
   EXPECT_THAT(t, (Args<0, 0>(Eq())));
   EXPECT_THAT(t, Not(Args<1, 1>(Ne())));
 }
 
 TEST(ArgsTest, AcceptsDecreasingTemplateArgs) {
-  const std::tuple<short, int, long> t(4, 5, 6L);  // NOLINT
+  const std::tuple<short, int, long> t(short{4}, 5, 6L);  // NOLINT
   EXPECT_THAT(t, (Args<2, 0>(Gt())));
   EXPECT_THAT(t, Not(Args<2, 1>(Lt())));
 }
@@ -892,7 +957,7 @@ TEST(ArgsTest, AcceptsMoreTemplateArgsThanArityOfOriginalTuple) {
 }
 
 TEST(ArgsTest, CanBeNested) {
-  const std::tuple<short, int, long, int> t(4, 5, 6L, 6);  // NOLINT
+  const std::tuple<short, int, long, int> t(short{4}, 5, 6L, 6);  // NOLINT
   EXPECT_THAT(t, (Args<1, 2, 3>(Args<1, 2>(Eq()))));
   EXPECT_THAT(t, (Args<0, 1, 3>(Args<0, 2>(Lt()))));
 }
@@ -1561,7 +1626,7 @@ TEST(AnyOfArrayTest, Matchers) {
 }
 
 TEST_P(AnyOfArrayTestP, ExplainsMatchResultCorrectly) {
-  // AnyOfArray and AllOfArry use the same underlying template-template,
+  // AnyOfArray and AllOfArray use the same underlying template-template,
   // thus it is sufficient to test one here.
   const std::vector<int> v0{};
   const std::vector<int> v1{1};
@@ -1570,10 +1635,10 @@ TEST_P(AnyOfArrayTestP, ExplainsMatchResultCorrectly) {
   const Matcher<int> m1 = AnyOfArray(v1);
   const Matcher<int> m2 = AnyOfArray(v2);
   EXPECT_EQ("", Explain(m0, 0));
-  EXPECT_EQ("", Explain(m1, 1));
-  EXPECT_EQ("", Explain(m1, 2));
-  EXPECT_EQ("", Explain(m2, 3));
-  EXPECT_EQ("", Explain(m2, 4));
+  EXPECT_EQ("which matches (is equal to 1)", Explain(m1, 1));
+  EXPECT_EQ("isn't equal to 1", Explain(m1, 2));
+  EXPECT_EQ("which matches (is equal to 3)", Explain(m2, 3));
+  EXPECT_EQ("isn't equal to 2, and isn't equal to 3", Explain(m2, 4));
   EXPECT_EQ("()", Describe(m0));
   EXPECT_EQ("(is equal to 1)", Describe(m1));
   EXPECT_EQ("(is equal to 2) or (is equal to 3)", Describe(m2));
@@ -1600,7 +1665,7 @@ MATCHER(IsNotNull, "") { return arg != nullptr; }
 // Verifies that a matcher defined using MATCHER() can work on
 // move-only types.
 TEST(MatcherMacroTest, WorksOnMoveOnlyType) {
-  std::unique_ptr<int> p(new int(3));
+  std::unique_ptr<int> p = std::make_unique<int>(3);
   EXPECT_THAT(p, IsNotNull());
   EXPECT_THAT(std::unique_ptr<int>(), Not(IsNotNull()));
 }
@@ -1610,11 +1675,25 @@ MATCHER_P(UniquePointee, pointee, "") { return *arg == pointee; }
 // Verifies that a matcher defined using MATCHER_P*() can work on
 // move-only types.
 TEST(MatcherPMacroTest, WorksOnMoveOnlyType) {
-  std::unique_ptr<int> p(new int(3));
+  std::unique_ptr<int> p = std::make_unique<int>(3);
   EXPECT_THAT(p, UniquePointee(3));
   EXPECT_THAT(p, Not(UniquePointee(2)));
 }
 
+MATCHER(EnsureNoUnusedButMarkedUnusedWarning, "") { return (arg % 2) == 0; }
+
+TEST(MockMethodMockFunctionTest, EnsureNoUnusedButMarkedUnusedWarning) {
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic error "-Wused-but-marked-unused"
+#endif
+  // https://github.com/google/googletest/issues/4055
+  EXPECT_THAT(0, EnsureNoUnusedButMarkedUnusedWarning());
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+}
+
 #if GTEST_HAS_EXCEPTIONS
 
 // std::function<void()> is used below for compatibility with older copies of
@@ -1778,8 +1857,8 @@ TEST(ThrowsPredicateCompilesTest, ExceptionMatcherAcceptsBroadType) {
   {
     Matcher<uint64_t> inner = Eq(10);
     Matcher<std::function<void()>> matcher = Throws<uint32_t>(inner);
-    EXPECT_TRUE(matcher.Matches([]() { throw(uint32_t) 10; }));
-    EXPECT_FALSE(matcher.Matches([]() { throw(uint32_t) 11; }));
+    EXPECT_TRUE(matcher.Matches([]() { throw (uint32_t)10; }));
+    EXPECT_FALSE(matcher.Matches([]() { throw (uint32_t)11; }));
   }
 }
 
@@ -1800,6 +1879,4 @@ TEST(ThrowsPredicateCompilesTest, MessageMatcherAcceptsNonMatcher) {
 }  // namespace gmock_matchers_test
 }  // namespace testing
 
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4244 4100

googlemock/test/gmock-matchers_test.h

@@ -148,9 +148,9 @@ class GreaterThanMatcher : public MatcherInterface<T> {
 };
 
 // Names and instantiates a new instance of GTestMatcherTestP.
-#define INSTANTIATE_GTEST_MATCHER_TEST_P(TestSuite)                         \
-  using TestSuite##P = GTestMatcherTestP;                                   \
-  INSTANTIATE_TEST_SUITE_P(MatcherInterface, TestSuite##P, Values(false));  \
+#define INSTANTIATE_GTEST_MATCHER_TEST_P(TestSuite)                        \
+  using TestSuite##P = GTestMatcherTestP;                                  \
+  INSTANTIATE_TEST_SUITE_P(MatcherInterface, TestSuite##P, Values(false)); \
   INSTANTIATE_TEST_SUITE_P(GtestMatcher, TestSuite##P, Values(true))
 
 class GTestMatcherTestP : public testing::TestWithParam<bool> {

googlemock/test/gmock-more-actions_test.cc

@@ -31,22 +31,23 @@
 //
 // This file tests the built-in actions in gmock-actions.h.
 
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4577)
-#endif
-
 #include "gmock/gmock-more-actions.h"
 
+#include <algorithm>
 #include <functional>
+#include <iterator>
 #include <memory>
 #include <sstream>
 #include <string>
+#include <tuple>
+#include <vector>
 
 #include "gmock/gmock.h"
 #include "gtest/gtest-spi.h"
 #include "gtest/gtest.h"
 
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4577)
+
 namespace testing {
 namespace gmock_more_actions_test {
 
@@ -58,6 +59,7 @@ using testing::Invoke;
 using testing::ReturnArg;
 using testing::ReturnPointee;
 using testing::SaveArg;
+using testing::SaveArgByMove;
 using testing::SaveArgPointee;
 using testing::SetArgReferee;
 using testing::Unused;
@@ -84,6 +86,16 @@ struct UnaryFunctor {
   int operator()(bool x) { return x ? 1 : -1; }
 };
 
+struct UnaryMoveOnlyFunctor : UnaryFunctor {
+  UnaryMoveOnlyFunctor() = default;
+  UnaryMoveOnlyFunctor(const UnaryMoveOnlyFunctor&) = delete;
+  UnaryMoveOnlyFunctor(UnaryMoveOnlyFunctor&&) = default;
+};
+
+struct OneShotUnaryFunctor {
+  int operator()(bool x) && { return x ? 1 : -1; }
+};
+
 const char* Binary(const char* input, short n) { return input + n; }  // NOLINT
 
 int Ternary(int x, char y, short z) { return x + y + z; }  // NOLINT
@@ -190,45 +202,45 @@ class Foo {
 
 // Tests using Invoke() with a nullary function.
 TEST(InvokeTest, Nullary) {
-  Action<int()> a = Invoke(Nullary);  // NOLINT
+  Action<int()> a = &Nullary;
   EXPECT_EQ(1, a.Perform(std::make_tuple()));
 }
 
 // Tests using Invoke() with a unary function.
 TEST(InvokeTest, Unary) {
-  Action<bool(int)> a = Invoke(Unary);  // NOLINT
+  Action<bool(int)> a = &Unary;
   EXPECT_FALSE(a.Perform(std::make_tuple(1)));
   EXPECT_TRUE(a.Perform(std::make_tuple(-1)));
 }
 
 // Tests using Invoke() with a binary function.
 TEST(InvokeTest, Binary) {
-  Action<const char*(const char*, short)> a = Invoke(Binary);  // NOLINT
+  Action<const char*(const char*, short)> a = &Binary;  // NOLINT
   const char* p = "Hello";
   EXPECT_EQ(p + 2, a.Perform(std::make_tuple(p, Short(2))));
 }
 
 // Tests using Invoke() with a ternary function.
 TEST(InvokeTest, Ternary) {
-  Action<int(int, char, short)> a = Invoke(Ternary);  // NOLINT
+  Action<int(int, char, short)> a = &Ternary;  // NOLINT
   EXPECT_EQ(6, a.Perform(std::make_tuple(1, '\2', Short(3))));
 }
 
 // Tests using Invoke() with a 4-argument function.
 TEST(InvokeTest, FunctionThatTakes4Arguments) {
-  Action<int(int, int, int, int)> a = Invoke(SumOf4);  // NOLINT
+  Action<int(int, int, int, int)> a = &SumOf4;
   EXPECT_EQ(1234, a.Perform(std::make_tuple(1000, 200, 30, 4)));
 }
 
 // Tests using Invoke() with a 5-argument function.
 TEST(InvokeTest, FunctionThatTakes5Arguments) {
-  Action<int(int, int, int, int, int)> a = Invoke(SumOf5);  // NOLINT
+  Action<int(int, int, int, int, int)> a = &SumOf5;
   EXPECT_EQ(12345, a.Perform(std::make_tuple(10000, 2000, 300, 40, 5)));
 }
 
 // Tests using Invoke() with a 6-argument function.
 TEST(InvokeTest, FunctionThatTakes6Arguments) {
-  Action<int(int, int, int, int, int, int)> a = Invoke(SumOf6);  // NOLINT
+  Action<int(int, int, int, int, int, int)> a = &SumOf6;
   EXPECT_EQ(123456,
             a.Perform(std::make_tuple(100000, 20000, 3000, 400, 50, 6)));
 }
@@ -241,7 +253,7 @@ inline const char* CharPtr(const char* s) { return s; }
 TEST(InvokeTest, FunctionThatTakes7Arguments) {
   Action<std::string(const char*, const char*, const char*, const char*,
                      const char*, const char*, const char*)>
-      a = Invoke(Concat7);
+      a = &Concat7;
   EXPECT_EQ("1234567",
             a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
                                       CharPtr("4"), CharPtr("5"), CharPtr("6"),
@@ -252,7 +264,7 @@ TEST(InvokeTest, FunctionThatTakes7Arguments) {
 TEST(InvokeTest, FunctionThatTakes8Arguments) {
   Action<std::string(const char*, const char*, const char*, const char*,
                      const char*, const char*, const char*, const char*)>
-      a = Invoke(Concat8);
+      a = &Concat8;
   EXPECT_EQ("12345678",
             a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
                                       CharPtr("4"), CharPtr("5"), CharPtr("6"),
@@ -264,7 +276,7 @@ TEST(InvokeTest, FunctionThatTakes9Arguments) {
   Action<std::string(const char*, const char*, const char*, const char*,
                      const char*, const char*, const char*, const char*,
                      const char*)>
-      a = Invoke(Concat9);
+      a = &Concat9;
   EXPECT_EQ("123456789", a.Perform(std::make_tuple(
                              CharPtr("1"), CharPtr("2"), CharPtr("3"),
                              CharPtr("4"), CharPtr("5"), CharPtr("6"),
@@ -276,7 +288,7 @@ TEST(InvokeTest, FunctionThatTakes10Arguments) {
   Action<std::string(const char*, const char*, const char*, const char*,
                      const char*, const char*, const char*, const char*,
                      const char*, const char*)>
-      a = Invoke(Concat10);
+      a = &Concat10;
   EXPECT_EQ("1234567890",
             a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
                                       CharPtr("4"), CharPtr("5"), CharPtr("6"),
@@ -286,12 +298,12 @@ TEST(InvokeTest, FunctionThatTakes10Arguments) {
 
 // Tests using Invoke() with functions with parameters declared as Unused.
 TEST(InvokeTest, FunctionWithUnusedParameters) {
-  Action<int(int, int, double, const std::string&)> a1 = Invoke(SumOfFirst2);
+  Action<int(int, int, double, const std::string&)> a1 = &SumOfFirst2;
   std::tuple<int, int, double, std::string> dummy =
       std::make_tuple(10, 2, 5.6, std::string("hi"));
   EXPECT_EQ(12, a1.Perform(dummy));
 
-  Action<int(int, int, bool, int*)> a2 = Invoke(SumOfFirst2);
+  Action<int(int, int, bool, int*)> a2 = &SumOfFirst2;
   EXPECT_EQ(
       23, a2.Perform(std::make_tuple(20, 3, true, static_cast<int*>(nullptr))));
 }
@@ -308,13 +320,13 @@ TEST(InvokeTest, MethodWithUnusedParameters) {
 
 // Tests using Invoke() with a functor.
 TEST(InvokeTest, Functor) {
-  Action<long(long, int)> a = Invoke(plus<long>());  // NOLINT
+  Action<long(long, int)> a = plus<long>();  // NOLINT
   EXPECT_EQ(3L, a.Perform(std::make_tuple(1, 2)));
 }
 
 // Tests using Invoke(f) as an action of a compatible type.
 TEST(InvokeTest, FunctionWithCompatibleType) {
-  Action<long(int, short, char, bool)> a = Invoke(SumOf4);  // NOLINT
+  Action<long(int, short, char, bool)> a = &SumOf4;  // NOLINT
   EXPECT_EQ(4321, a.Perform(std::make_tuple(4000, Short(300), Char(20), true)));
 }
 
@@ -435,13 +447,13 @@ TEST(InvokeMethodTest, MethodWithCompatibleType) {
 
 // Tests using WithoutArgs with an action that takes no argument.
 TEST(WithoutArgsTest, NoArg) {
-  Action<int(int n)> a = WithoutArgs(Invoke(Nullary));  // NOLINT
+  Action<int(int n)> a = WithoutArgs(&Nullary);  // NOLINT
   EXPECT_EQ(1, a.Perform(std::make_tuple(2)));
 }
 
 // Tests using WithArg with an action that takes 1 argument.
 TEST(WithArgTest, OneArg) {
-  Action<bool(double x, int n)> b = WithArg<1>(Invoke(Unary));  // NOLINT
+  Action<bool(double x, int n)> b = WithArg<1>(&Unary);  // NOLINT
   EXPECT_TRUE(b.Perform(std::make_tuple(1.5, -1)));
   EXPECT_FALSE(b.Perform(std::make_tuple(1.5, 1)));
 }
@@ -481,6 +493,34 @@ TEST(SaveArgActionTest, WorksForCompatibleType) {
   EXPECT_EQ('a', result);
 }
 
+struct MoveOnly {
+  explicit MoveOnly(int v) : i(v) {}
+  MoveOnly(MoveOnly&& o) {
+    i = o.i;
+    o.i = -1;
+  }
+  MoveOnly& operator=(MoveOnly&& o) {
+    i = o.i;
+    o.i = -1;
+    return *this;
+  }
+  int i;
+};
+
+TEST(SaveArgByMoveActionTest, WorksForSameType) {
+  MoveOnly result{0};
+  const Action<void(MoveOnly v)> a1 = SaveArgByMove<0>(&result);
+  a1.Perform(std::make_tuple(MoveOnly{5}));
+  EXPECT_EQ(5, result.i);
+}
+
+TEST(SaveArgByMoveActionTest, WorksForCompatibleType) {
+  MoveOnly result{0};
+  const Action<void(bool, MoveOnly)> a1 = SaveArgByMove<1>(&result);
+  a1.Perform(std::make_tuple(true, MoveOnly{7}));
+  EXPECT_EQ(7, result.i);
+}
+
 TEST(SaveArgPointeeActionTest, WorksForSameType) {
   int result = 0;
   const int value = 5;
@@ -676,7 +716,7 @@ TEST(SetArrayArgumentTest, SetsTheNthArrayWithIteratorArgument) {
   Action<MyFunction> a = SetArrayArgument<1>(letters.begin(), letters.end());
 
   std::string s;
-  a.Perform(std::make_tuple(true, back_inserter(s)));
+  a.Perform(std::make_tuple(true, std::back_inserter(s)));
   EXPECT_EQ(letters, s);
 }
 
@@ -697,12 +737,24 @@ TEST(InvokeArgumentTest, Function0) {
   EXPECT_EQ(1, a.Perform(std::make_tuple(2, &Nullary)));
 }
 
-// Tests using InvokeArgument with a unary function.
+// Tests using InvokeArgument with a unary functor.
 TEST(InvokeArgumentTest, Functor1) {
   Action<int(UnaryFunctor)> a = InvokeArgument<0>(true);  // NOLINT
   EXPECT_EQ(1, a.Perform(std::make_tuple(UnaryFunctor())));
 }
 
+// Tests using InvokeArgument with a unary move-only functor.
+TEST(InvokeArgumentTest, Functor1MoveOnly) {
+  Action<int(UnaryMoveOnlyFunctor)> a = InvokeArgument<0>(true);  // NOLINT
+  EXPECT_EQ(1, a.Perform(std::make_tuple(UnaryMoveOnlyFunctor())));
+}
+
+// Tests using InvokeArgument with a one-shot unary functor.
+TEST(InvokeArgumentTest, OneShotFunctor1) {
+  Action<int(OneShotUnaryFunctor)> a = InvokeArgument<0>(true);  // NOLINT
+  EXPECT_EQ(1, a.Perform(std::make_tuple(OneShotUnaryFunctor())));
+}
+
 // Tests using InvokeArgument with a 5-ary function.
 TEST(InvokeArgumentTest, Function5) {
   Action<int(int (*)(int, int, int, int, int))> a =  // NOLINT
@@ -733,34 +785,34 @@ TEST(InvokeArgumentTest, Functor6) {
 
 // Tests using InvokeArgument with a 7-ary function.
 TEST(InvokeArgumentTest, Function7) {
-  Action<std::string(std::string(*)(const char*, const char*, const char*,
-                                    const char*, const char*, const char*,
-                                    const char*))>
+  Action<std::string(std::string (*)(const char*, const char*, const char*,
+                                     const char*, const char*, const char*,
+                                     const char*))>
       a = InvokeArgument<0>("1", "2", "3", "4", "5", "6", "7");
   EXPECT_EQ("1234567", a.Perform(std::make_tuple(&Concat7)));
 }
 
 // Tests using InvokeArgument with a 8-ary function.
 TEST(InvokeArgumentTest, Function8) {
-  Action<std::string(std::string(*)(const char*, const char*, const char*,
-                                    const char*, const char*, const char*,
-                                    const char*, const char*))>
+  Action<std::string(std::string (*)(const char*, const char*, const char*,
+                                     const char*, const char*, const char*,
+                                     const char*, const char*))>
       a = InvokeArgument<0>("1", "2", "3", "4", "5", "6", "7", "8");
   EXPECT_EQ("12345678", a.Perform(std::make_tuple(&Concat8)));
 }
 
 // Tests using InvokeArgument with a 9-ary function.
 TEST(InvokeArgumentTest, Function9) {
-  Action<std::string(std::string(*)(const char*, const char*, const char*,
-                                    const char*, const char*, const char*,
-                                    const char*, const char*, const char*))>
+  Action<std::string(std::string (*)(const char*, const char*, const char*,
+                                     const char*, const char*, const char*,
+                                     const char*, const char*, const char*))>
       a = InvokeArgument<0>("1", "2", "3", "4", "5", "6", "7", "8", "9");
   EXPECT_EQ("123456789", a.Perform(std::make_tuple(&Concat9)));
 }
 
 // Tests using InvokeArgument with a 10-ary function.
 TEST(InvokeArgumentTest, Function10) {
-  Action<std::string(std::string(*)(
+  Action<std::string(std::string (*)(
       const char*, const char*, const char*, const char*, const char*,
       const char*, const char*, const char*, const char*, const char*))>
       a = InvokeArgument<0>("1", "2", "3", "4", "5", "6", "7", "8", "9", "0");
@@ -805,6 +857,22 @@ TEST(InvokeArgumentTest, ByExplicitConstReferenceFunction) {
   EXPECT_FALSE(a.Perform(std::make_tuple(&ReferencesGlobalDouble)));
 }
 
+TEST(InvokeArgumentTest, MoveOnlyType) {
+  struct Marker {};
+  struct {
+    // Method takes a unique_ptr (to a type we don't care about), and an
+    // invocable type.
+    MOCK_METHOD(bool, MockMethod,
+                (std::unique_ptr<Marker>, std::function<int()>), ());
+  } mock;
+
+  ON_CALL(mock, MockMethod(_, _)).WillByDefault(InvokeArgument<1>());
+
+  // This compiles, but is a little opaque as a workaround:
+  ON_CALL(mock, MockMethod(_, _))
+      .WillByDefault(WithArg<1>(InvokeArgument<0>()));
+}
+
 // Tests DoAll(a1, a2).
 TEST(DoAllTest, TwoActions) {
   int n = 0;
@@ -982,11 +1050,7 @@ TEST(DoAllTest, ImplicitlyConvertsActionArguments) {
 // is expanded and macro expansion cannot contain #pragma.  Therefore
 // we suppress them here.
 // Also suppress C4503 decorated name length exceeded, name was truncated
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4100)
-#pragma warning(disable : 4503)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4100 4503)
 // Tests the ACTION*() macro family.
 
 // Tests that ACTION() can define an action that doesn't reference the
@@ -1548,3 +1612,6 @@ TEST(ActionTemplateTest, CanBeOverloadedOnNumberOfValueParameters) {
 
 }  // namespace gmock_more_actions_test
 }  // namespace testing
+
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4100 4503
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4577

googlemock/test/gmock-nice-strict_test.cc

@@ -40,7 +40,7 @@
 // clash with ::testing::Mock.
 class Mock {
  public:
-  Mock() {}
+  Mock() = default;
 
   MOCK_METHOD0(DoThis, void());
 
@@ -78,7 +78,7 @@ class CallsMockMethodInDestructor {
 
 class Foo {
  public:
-  virtual ~Foo() {}
+  virtual ~Foo() = default;
 
   virtual void DoThis() = 0;
   virtual int DoThat(bool flag) = 0;
@@ -86,7 +86,7 @@ class Foo {
 
 class MockFoo : public Foo {
  public:
-  MockFoo() {}
+  MockFoo() = default;
   void Delete() { delete this; }
 
   MOCK_METHOD0(DoThis, void());
@@ -109,7 +109,7 @@ class MockBar {
            (a10 ? 'T' : 'F');
   }
 
-  virtual ~MockBar() {}
+  virtual ~MockBar() = default;
 
   const std::string& str() const { return str_; }
 

googlemock/test/gmock-pp_test.cc

@@ -70,7 +70,7 @@ static_assert(GMOCK_PP_INTERNAL_VAR_TEST(x, y) == 2, "");
 static_assert(GMOCK_PP_INTERNAL_VAR_TEST(silly) == 1, "");
 static_assert(GMOCK_PP_INTERNAL_VAR_TEST(x, y, z) == 3, "");
 
-// TODO(iserna): The following asserts fail in --config=lexan.
+// TODO(iserna): The following asserts fail in --config=windows.
 #define GMOCK_PP_INTERNAL_IS_EMPTY_TEST_1
 static_assert(GMOCK_PP_IS_EMPTY(GMOCK_PP_INTERNAL_IS_EMPTY_TEST_1), "");
 static_assert(GMOCK_PP_IS_EMPTY(), "");

googlemock/test/gmock-spec-builders_test.cc

@@ -98,7 +98,7 @@ class NonDefaultConstructible {
 
 class MockA {
  public:
-  MockA() {}
+  MockA() = default;
 
   MOCK_METHOD1(DoA, void(int n));
   MOCK_METHOD1(ReturnResult, Result(int n));
@@ -113,7 +113,7 @@ class MockA {
 
 class MockB {
  public:
-  MockB() {}
+  MockB() = default;
 
   MOCK_CONST_METHOD0(DoB, int());  // NOLINT
   MOCK_METHOD1(DoB, int(int n));   // NOLINT
@@ -125,7 +125,7 @@ class MockB {
 
 class ReferenceHoldingMock {
  public:
-  ReferenceHoldingMock() {}
+  ReferenceHoldingMock() = default;
 
   MOCK_METHOD1(AcceptReference, void(std::shared_ptr<MockA>*));
 
@@ -143,12 +143,12 @@ class ReferenceHoldingMock {
 
 class CC {
  public:
-  virtual ~CC() {}
+  virtual ~CC() = default;
   virtual int Method() = 0;
 };
 class MockCC : public CC {
  public:
-  MockCC() {}
+  MockCC() = default;
 
   MOCK_METHOD0(Method, int());
 
@@ -160,7 +160,7 @@ class MockCC : public CC {
 // Tests that a method with expanded name compiles.
 TEST(OnCallSyntaxTest, CompilesWithMethodNameExpandedFromMacro) {
   MockCC cc;
-  ON_CALL(cc, Method());
+  (void)ON_CALL(cc, Method());
 }
 
 // Tests that the method with expanded name not only compiles but runs
@@ -193,7 +193,7 @@ TEST(OnCallSyntaxTest, EvaluatesFirstArgumentOnce) {
   MockA a;
   MockA* pa = &a;
 
-  ON_CALL(*pa++, DoA(_));
+  (void)ON_CALL(*pa++, DoA(_));
   EXPECT_EQ(&a + 1, pa);
 }
 
@@ -201,7 +201,7 @@ TEST(OnCallSyntaxTest, EvaluatesSecondArgumentOnce) {
   MockA a;
   int n = 0;
 
-  ON_CALL(a, DoA(n++));
+  (void)ON_CALL(a, DoA(n++));
   EXPECT_EQ(1, n);
 }
 
@@ -232,7 +232,7 @@ TEST(OnCallSyntaxTest, WillByDefaultIsMandatory) {
 
   EXPECT_DEATH_IF_SUPPORTED(
       {
-        ON_CALL(a, DoA(5));
+        (void)ON_CALL(a, DoA(5));
         a.DoA(5);
       },
       "");
@@ -739,11 +739,12 @@ TEST(ExpectCallTest, CatchesTooFewCalls) {
   EXPECT_NONFATAL_FAILURE(
       {  // NOLINT
         MockB b;
-        EXPECT_CALL(b, DoB(5)).Times(AtLeast(2));
+        EXPECT_CALL(b, DoB(5)).Description("DoB Method").Times(AtLeast(2));
 
         b.DoB(5);
       },
-      "Actual function call count doesn't match EXPECT_CALL(b, DoB(5))...\n"
+      "Actual function \"DoB Method\" call count "
+      "doesn't match EXPECT_CALL(b, DoB(5))...\n"
       "         Expected: to be called at least twice\n"
       "           Actual: called once - unsatisfied and active");
 }
@@ -803,39 +804,39 @@ TEST(ExpectCallTest, InfersCardinality1WhenThereIsWillRepeatedly) {
       "to be called at least once");
 }
 
-#if defined(__cplusplus) && __cplusplus >= 201703L
-
+// TODO(b/396121064) - Fix this test under MSVC
+#ifndef _MSC_VER
 // It should be possible to return a non-moveable type from a mock action in
 // C++17 and above, where it's guaranteed that such a type can be initialized
 // from a prvalue returned from a function.
 TEST(ExpectCallTest, NonMoveableType) {
   // Define a non-moveable result type.
-  struct Result {
-    explicit Result(int x_in) : x(x_in) {}
-    Result(Result&&) = delete;
+  struct NonMoveableStruct {
+    explicit NonMoveableStruct(int x_in) : x(x_in) {}
+    NonMoveableStruct(NonMoveableStruct&&) = delete;
 
     int x;
   };
 
-  static_assert(!std::is_move_constructible_v<Result>);
-  static_assert(!std::is_copy_constructible_v<Result>);
+  static_assert(!std::is_move_constructible_v<NonMoveableStruct>);
+  static_assert(!std::is_copy_constructible_v<NonMoveableStruct>);
 
-  static_assert(!std::is_move_assignable_v<Result>);
-  static_assert(!std::is_copy_assignable_v<Result>);
+  static_assert(!std::is_move_assignable_v<NonMoveableStruct>);
+  static_assert(!std::is_copy_assignable_v<NonMoveableStruct>);
 
   // We should be able to use a callable that returns that result as both a
   // OnceAction and an Action, whether the callable ignores arguments or not.
-  const auto return_17 = [] { return Result(17); };
+  const auto return_17 = [] { return NonMoveableStruct(17); };
 
-  static_cast<void>(OnceAction<Result()>{return_17});
-  static_cast<void>(Action<Result()>{return_17});
+  static_cast<void>(OnceAction<NonMoveableStruct()>{return_17});
+  static_cast<void>(Action<NonMoveableStruct()>{return_17});
 
-  static_cast<void>(OnceAction<Result(int)>{return_17});
-  static_cast<void>(Action<Result(int)>{return_17});
+  static_cast<void>(OnceAction<NonMoveableStruct(int)>{return_17});
+  static_cast<void>(Action<NonMoveableStruct(int)>{return_17});
 
   // It should be possible to return the result end to end through an
   // EXPECT_CALL statement, with both WillOnce and WillRepeatedly.
-  MockFunction<Result()> mock;
+  MockFunction<NonMoveableStruct()> mock;
   EXPECT_CALL(mock, Call)   //
       .WillOnce(return_17)  //
       .WillRepeatedly(return_17);
@@ -845,7 +846,7 @@ TEST(ExpectCallTest, NonMoveableType) {
   EXPECT_EQ(17, mock.AsStdFunction()().x);
 }
 
-#endif  // C++17 and above
+#endif  // _MSC_VER
 
 // Tests that the n-th action is taken for the n-th matching
 // invocation.
@@ -904,7 +905,7 @@ TEST(ExpectCallTest, TakesDefaultActionWhenWillListIsExhausted) {
                         " - returning default value."));
 }
 
-TEST(FunctionMockerMessageTest, ReportsExpectCallLocationForExhausedActions) {
+TEST(FunctionMockerMessageTest, ReportsExpectCallLocationForExhaustedActions) {
   MockB b;
   std::string expect_call_location = FormatFileLocation(__FILE__, __LINE__ + 1);
   EXPECT_CALL(b, DoB()).Times(AnyNumber()).WillOnce(Return(1));
@@ -1064,7 +1065,7 @@ TEST(UnexpectedCallTest, UnmatchedArguments) {
 
 // Tests that Google Mock explains that an expectation with
 // unsatisfied pre-requisites doesn't match the call.
-TEST(UnexpectedCallTest, UnsatisifiedPrerequisites) {
+TEST(UnexpectedCallTest, UnsatisfiedPrerequisites) {
   Sequence s1, s2;
   MockB b;
   EXPECT_CALL(b, DoB(1)).InSequence(s1);
@@ -1087,16 +1088,7 @@ TEST(UnexpectedCallTest, UnsatisifiedPrerequisites) {
 
   // Verifies that the failure message contains the two unsatisfied
   // pre-requisites but not the satisfied one.
-#if GTEST_USES_PCRE
-  EXPECT_THAT(
-      r.message(),
-      ContainsRegex(
-          // PCRE has trouble using (.|\n) to match any character, but
-          // supports the (?s) prefix for using . to match any character.
-          "(?s)the following immediate pre-requisites are not satisfied:\n"
-          ".*: pre-requisite #0\n"
-          ".*: pre-requisite #1"));
-#elif GTEST_USES_POSIX_RE
+#ifdef GTEST_USES_POSIX_RE
   EXPECT_THAT(r.message(),
               ContainsRegex(
                   // POSIX RE doesn't understand the (?s) prefix, but has no
@@ -1111,7 +1103,7 @@ TEST(UnexpectedCallTest, UnsatisifiedPrerequisites) {
                   "the following immediate pre-requisites are not satisfied:"));
   EXPECT_THAT(r.message(), ContainsRegex(": pre-requisite #0"));
   EXPECT_THAT(r.message(), ContainsRegex(": pre-requisite #1"));
-#endif  // GTEST_USES_PCRE
+#endif  // GTEST_USES_POSIX_RE
 
   b.DoB(1);
   b.DoB(3);
@@ -1148,10 +1140,11 @@ TEST(ExcessiveCallTest, DoesDefaultAction) {
   // When there is no ON_CALL(), the default value for the return type
   // should be returned.
   MockB b;
-  EXPECT_CALL(b, DoB(0)).Times(0);
+  EXPECT_CALL(b, DoB(0)).Description("DoB Method").Times(0);
   int n = -1;
-  EXPECT_NONFATAL_FAILURE(n = b.DoB(0),
-                          "Mock function called more times than expected");
+  EXPECT_NONFATAL_FAILURE(
+      n = b.DoB(0),
+      "Mock function \"DoB Method\" called more times than expected");
   EXPECT_EQ(0, n);
 }
 
@@ -1159,10 +1152,11 @@ TEST(ExcessiveCallTest, DoesDefaultAction) {
 // the failure message contains the argument values.
 TEST(ExcessiveCallTest, GeneratesFailureForVoidFunction) {
   MockA a;
-  EXPECT_CALL(a, DoA(_)).Times(0);
+  EXPECT_CALL(a, DoA(_)).Description("DoA Method").Times(0);
   EXPECT_NONFATAL_FAILURE(
       a.DoA(9),
-      "Mock function called more times than expected - returning directly.\n"
+      "Mock function \"DoA Method\" called more times than expected - "
+      "returning directly.\n"
       "    Function call: DoA(9)\n"
       "         Expected: to be never called\n"
       "           Actual: called once - over-saturated and active");
@@ -1776,16 +1770,11 @@ TEST(DeletingMockEarlyTest, Success2) {
 
 // Suppresses warning on unreferenced formal parameter in MSVC with
 // -W4.
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4100)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4100)
 
 ACTION_P(Delete, ptr) { delete ptr; }
 
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4100
 
 TEST(DeletingMockEarlyTest, CanDeleteSelfInActionReturningVoid) {
   MockA* const a = new MockA;
@@ -1892,7 +1881,7 @@ struct Unprintable {
 
 class MockC {
  public:
-  MockC() {}
+  MockC() = default;
 
   MOCK_METHOD6(VoidMethod, void(bool cond, int n, std::string s, void* p,
                                 const Printable& x, Unprintable y));
@@ -2056,12 +2045,12 @@ class GMockVerboseFlagTest : public VerboseFlagPreservingFixture {
     NaggyMock<MockA> a;
     const std::string note =
         "NOTE: You can safely ignore the above warning unless this "
-        "call should not happen.  Do not suppress it by blindly adding "
+        "call should not happen.  Do not suppress it by adding "
         "an EXPECT_CALL() if you don't mean to enforce the call.  "
         "See "
-        "https://github.com/google/googletest/blob/master/docs/"
+        "https://github.com/google/googletest/blob/main/docs/"
         "gmock_cook_book.md#"
-        "knowing-when-to-expect for details.";
+        "knowing-when-to-expect-useoncall for details.";
 
     // A void-returning function.
     CaptureStdout();
@@ -2132,7 +2121,7 @@ void PrintTo(PrintMeNot /* dummy */, ::std::ostream* /* os */) {
 
 class LogTestHelper {
  public:
-  LogTestHelper() {}
+  LogTestHelper() = default;
 
   MOCK_METHOD1(Foo, PrintMeNot(PrintMeNot));
 
@@ -2599,14 +2588,7 @@ TEST(ParameterlessExpectationsTest,
 }  // namespace
 }  // namespace testing
 
-// Allows the user to define their own main and then invoke gmock_main
-// from it. This might be necessary on some platforms which require
-// specific setup and teardown.
-#if GMOCK_RENAME_MAIN
-int gmock_main(int argc, char** argv) {
-#else
 int main(int argc, char** argv) {
-#endif  // GMOCK_RENAME_MAIN
   testing::InitGoogleMock(&argc, argv);
   // Ensures that the tests pass no matter what value of
   // --gmock_catch_leaked_mocks and --gmock_verbose the user specifies.

googlemock/test/gmock_ex_test.cc

@@ -29,6 +29,8 @@
 
 // Tests Google Mock's functionality that depends on exceptions.
 
+#include <exception>
+
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
 

googlemock/test/gmock_leak_test.py

@@ -54,50 +54,59 @@ class GMockLeakTest(gmock_test_utils.TestCase):
   def testCatchesLeakedMockByDefault(self):
     self.assertNotEqual(
         0,
-        gmock_test_utils.Subprocess(TEST_WITH_EXPECT_CALL,
-                                    env=environ).exit_code)
+        gmock_test_utils.Subprocess(
+            TEST_WITH_EXPECT_CALL, env=environ
+        ).exit_code,
+    )
     self.assertNotEqual(
-        0,
-        gmock_test_utils.Subprocess(TEST_WITH_ON_CALL,
-                                    env=environ).exit_code)
+        0, gmock_test_utils.Subprocess(TEST_WITH_ON_CALL, env=environ).exit_code
+    )
 
   def testDoesNotCatchLeakedMockWhenDisabled(self):
-    self.assertEquals(
+    self.assertEqual(
         0,
-        gmock_test_utils.Subprocess(TEST_WITH_EXPECT_CALL +
-                                    ['--gmock_catch_leaked_mocks=0'],
-                                    env=environ).exit_code)
-    self.assertEquals(
+        gmock_test_utils.Subprocess(
+            TEST_WITH_EXPECT_CALL + ['--gmock_catch_leaked_mocks=0'],
+            env=environ,
+        ).exit_code,
+    )
+    self.assertEqual(
         0,
-        gmock_test_utils.Subprocess(TEST_WITH_ON_CALL +
-                                    ['--gmock_catch_leaked_mocks=0'],
-                                    env=environ).exit_code)
+        gmock_test_utils.Subprocess(
+            TEST_WITH_ON_CALL + ['--gmock_catch_leaked_mocks=0'], env=environ
+        ).exit_code,
+    )
 
   def testCatchesLeakedMockWhenEnabled(self):
     self.assertNotEqual(
         0,
-        gmock_test_utils.Subprocess(TEST_WITH_EXPECT_CALL +
-                                    ['--gmock_catch_leaked_mocks'],
-                                    env=environ).exit_code)
+        gmock_test_utils.Subprocess(
+            TEST_WITH_EXPECT_CALL + ['--gmock_catch_leaked_mocks'], env=environ
+        ).exit_code,
+    )
     self.assertNotEqual(
         0,
-        gmock_test_utils.Subprocess(TEST_WITH_ON_CALL +
-                                    ['--gmock_catch_leaked_mocks'],
-                                    env=environ).exit_code)
+        gmock_test_utils.Subprocess(
+            TEST_WITH_ON_CALL + ['--gmock_catch_leaked_mocks'], env=environ
+        ).exit_code,
+    )
 
   def testCatchesLeakedMockWhenEnabledWithExplictFlagValue(self):
     self.assertNotEqual(
         0,
-        gmock_test_utils.Subprocess(TEST_WITH_EXPECT_CALL +
-                                    ['--gmock_catch_leaked_mocks=1'],
-                                    env=environ).exit_code)
+        gmock_test_utils.Subprocess(
+            TEST_WITH_EXPECT_CALL + ['--gmock_catch_leaked_mocks=1'],
+            env=environ,
+        ).exit_code,
+    )
 
   def testCatchesMultipleLeakedMocks(self):
     self.assertNotEqual(
         0,
-        gmock_test_utils.Subprocess(TEST_MULTIPLE_LEAKS +
-                                    ['--gmock_catch_leaked_mocks'],
-                                    env=environ).exit_code)
+        gmock_test_utils.Subprocess(
+            TEST_MULTIPLE_LEAKS + ['--gmock_catch_leaked_mocks'], env=environ
+        ).exit_code,
+    )
 
 
 if __name__ == '__main__':

googlemock/test/gmock_leak_test_.cc

@@ -40,13 +40,13 @@ using ::testing::Return;
 
 class FooInterface {
  public:
-  virtual ~FooInterface() {}
+  virtual ~FooInterface() = default;
   virtual void DoThis() = 0;
 };
 
 class MockFoo : public FooInterface {
  public:
-  MockFoo() {}
+  MockFoo() = default;
 
   MOCK_METHOD0(DoThis, void());
 

googlemock/test/gmock_link_test.h

@@ -116,7 +116,7 @@
 
 #include "gmock/gmock.h"
 
-#if !GTEST_OS_WINDOWS_MOBILE
+#ifndef GTEST_OS_WINDOWS_MOBILE
 #include <errno.h>
 #endif
 
@@ -181,11 +181,12 @@ using testing::WithArg;
 using testing::WithArgs;
 using testing::WithoutArgs;
 
-#if !GTEST_OS_WINDOWS_MOBILE
+#ifndef GTEST_OS_WINDOWS_MOBILE
 using testing::SetErrnoAndReturn;
 #endif
 
 #if GTEST_HAS_EXCEPTIONS
+using testing::Rethrow;
 using testing::Throw;
 #endif
 
@@ -194,7 +195,7 @@ using testing::MatchesRegex;
 
 class Interface {
  public:
-  virtual ~Interface() {}
+  virtual ~Interface() = default;
   virtual void VoidFromString(char* str) = 0;
   virtual char* StringFromString(char* str) = 0;
   virtual int IntFromString(char* str) = 0;
@@ -208,7 +209,7 @@ class Interface {
 
 class Mock : public Interface {
  public:
-  Mock() {}
+  Mock() = default;
 
   MOCK_METHOD1(VoidFromString, void(char* str));
   MOCK_METHOD1(StringFromString, char*(char* str));
@@ -306,7 +307,7 @@ TEST(LinkTest, TestSetArrayArgument) {
   mock.VoidFromString(&ch);
 }
 
-#if !GTEST_OS_WINDOWS_MOBILE
+#ifndef GTEST_OS_WINDOWS_MOBILE
 
 // Tests the linkage of the SetErrnoAndReturn action.
 TEST(LinkTest, TestSetErrnoAndReturn) {
@@ -416,6 +417,14 @@ TEST(LinkTest, TestThrow) {
   EXPECT_CALL(mock, VoidFromString(_)).WillOnce(Throw(42));
   EXPECT_THROW(mock.VoidFromString(nullptr), int);
 }
+// Tests the linkage of the Rethrow action.
+TEST(LinkTest, TestRethrow) {
+  Mock mock;
+
+  EXPECT_CALL(mock, VoidFromString(_))
+      .WillOnce(Rethrow(std::make_exception_ptr(42)));
+  EXPECT_THROW(mock.VoidFromString(nullptr), int);
+}
 #endif  // GTEST_HAS_EXCEPTIONS
 
 // The ACTION*() macros trigger warning C4100 (unreferenced formal
@@ -423,10 +432,7 @@ TEST(LinkTest, TestThrow) {
 // the macro definition, as the warnings are generated when the macro
 // is expanded and macro expansion cannot contain #pragma.  Therefore
 // we suppress them here.
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4100)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4100)
 
 // Tests the linkage of actions created using ACTION macro.
 namespace {
@@ -459,9 +465,7 @@ ACTION_P2(ReturnEqualsEitherOf, first, second) {
 }
 }  // namespace
 
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4100
 
 TEST(LinkTest, TestActionP2Macro) {
   Mock mock;

googlemock/test/gmock_output_test.py

@@ -39,7 +39,7 @@ gmock_output_test.py
 
 """
 
-from io import open    # pylint: disable=redefined-builtin, g-importing-member
+from io import open  # pylint: disable=redefined-builtin, g-importing-member
 import os
 import re
 import sys
@@ -159,15 +159,22 @@ class GMockOutputTest(gmock_test_utils.TestCase):
     golden_file = open(GOLDEN_PATH, 'rb')
     golden = golden_file.read().decode('utf-8')
     golden_file.close()
+    # On Windows the repository might have been checked out with \r\n line
+    # endings, so normalize it here.
+    golden = ToUnixLineEnding(golden)
 
     # The normalized output should match the golden file.
     self.assertEqual(golden, output)
 
     # The raw output should contain 2 leaked mock object errors for
     # test GMockOutputTest.CatchesLeakedMocks.
-    self.assertEqual(['GMockOutputTest.CatchesLeakedMocks',
-                      'GMockOutputTest.CatchesLeakedMocks'],
-                     leaky_tests)
+    self.assertEqual(
+        [
+            'GMockOutputTest.CatchesLeakedMocks',
+            'GMockOutputTest.CatchesLeakedMocks',
+        ],
+        leaky_tests,
+    )
 
 
 if __name__ == '__main__':

googlemock/test/gmock_output_test_.cc

@@ -38,10 +38,7 @@
 #include "gtest/gtest.h"
 
 // Silence C4100 (unreferenced formal parameter)
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4100)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4100)
 
 using testing::_;
 using testing::AnyNumber;
@@ -55,7 +52,7 @@ using testing::Value;
 
 class MockFoo {
  public:
-  MockFoo() {}
+  MockFoo() = default;
 
   MOCK_METHOD3(Bar, char(const std::string& s, int i, double x));
   MOCK_METHOD2(Bar2, bool(int x, int y));
@@ -286,6 +283,4 @@ int main(int argc, char** argv) {
   return RUN_ALL_TESTS();
 }
 
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4100

googlemock/test/gmock_output_test_golden.txt

@@ -40,6 +40,7 @@ FILE:#: EXPECT_CALL(foo_, Bar2(0, _))...
            Actual: 1
          Expected: to be called once
            Actual: never called - unsatisfied and active
+
 [  FAILED  ] GMockOutputTest.UnexpectedCall
 [ RUN      ] GMockOutputTest.UnexpectedCallToVoidFunction
 unknown file: Failure
@@ -53,6 +54,7 @@ FILE:#: EXPECT_CALL(foo_, Bar3(0, _))...
            Actual: 1
          Expected: to be called once
            Actual: never called - unsatisfied and active
+
 [  FAILED  ] GMockOutputTest.UnexpectedCallToVoidFunction
 [ RUN      ] GMockOutputTest.ExcessiveCall
 FILE:#: Failure
@@ -61,6 +63,7 @@ Mock function called more times than expected - returning default value.
           Returns: false
          Expected: to be called once
            Actual: called twice - over-saturated and active
+
 [  FAILED  ] GMockOutputTest.ExcessiveCall
 [ RUN      ] GMockOutputTest.ExcessiveCallToVoidFunction
 FILE:#: Failure
@@ -68,6 +71,7 @@ Mock function called more times than expected - returning directly.
     Function call: Bar3(0, 1)
          Expected: to be called once
            Actual: called twice - over-saturated and active
+
 [  FAILED  ] GMockOutputTest.ExcessiveCallToVoidFunction
 [ RUN      ] GMockOutputTest.UninterestingCall
 
@@ -75,14 +79,14 @@ GMOCK WARNING:
 Uninteresting mock function call - returning default value.
     Function call: Bar2(0, 1)
           Returns: false
-NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by blindly adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/master/docs/gmock_cook_book.md#knowing-when-to-expect for details.
+NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/main/docs/gmock_cook_book.md#knowing-when-to-expect-useoncall for details.
 [       OK ] GMockOutputTest.UninterestingCall
 [ RUN      ] GMockOutputTest.UninterestingCallToVoidFunction
 
 GMOCK WARNING:
 Uninteresting mock function call - returning directly.
     Function call: Bar3(0, 1)
-NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by blindly adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/master/docs/gmock_cook_book.md#knowing-when-to-expect for details.
+NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/main/docs/gmock_cook_book.md#knowing-when-to-expect-useoncall for details.
 [       OK ] GMockOutputTest.UninterestingCallToVoidFunction
 [ RUN      ] GMockOutputTest.RetiredExpectation
 unknown file: Failure
@@ -104,6 +108,7 @@ FILE:#: tried expectation #1: EXPECT_CALL(foo_, Bar2(0, 0))...
            Actual: 1
          Expected: to be called once
            Actual: never called - unsatisfied and active
+
 [  FAILED  ] GMockOutputTest.RetiredExpectation
 [ RUN      ] GMockOutputTest.UnsatisfiedPrerequisite
 unknown file: Failure
@@ -125,6 +130,7 @@ FILE:#: pre-requisite #0
                    (end of pre-requisites)
          Expected: to be called once
            Actual: never called - unsatisfied and active
+
 [  FAILED  ] GMockOutputTest.UnsatisfiedPrerequisite
 [ RUN      ] GMockOutputTest.UnsatisfiedPrerequisites
 unknown file: Failure
@@ -147,6 +153,7 @@ FILE:#: pre-requisite #1
                    (end of pre-requisites)
          Expected: to be called once
            Actual: never called - unsatisfied and active
+
 [  FAILED  ] GMockOutputTest.UnsatisfiedPrerequisites
 [ RUN      ] GMockOutputTest.UnsatisfiedWith
 FILE:#: Failure
@@ -154,16 +161,19 @@ Actual function call count doesn't match EXPECT_CALL(foo_, Bar2(_, _))...
     Expected args: are a pair where the first >= the second
          Expected: to be called once
            Actual: never called - unsatisfied and active
+
 [  FAILED  ] GMockOutputTest.UnsatisfiedWith
 [ RUN      ] GMockOutputTest.UnsatisfiedExpectation
 FILE:#: Failure
 Actual function call count doesn't match EXPECT_CALL(foo_, Bar2(0, _))...
          Expected: to be called twice
            Actual: called once - unsatisfied and active
+
 FILE:#: Failure
 Actual function call count doesn't match EXPECT_CALL(foo_, Bar(_, _, _))...
          Expected: to be called once
            Actual: never called - unsatisfied and active
+
 [  FAILED  ] GMockOutputTest.UnsatisfiedExpectation
 [ RUN      ] GMockOutputTest.MismatchArguments
 unknown file: Failure
@@ -180,6 +190,7 @@ FILE:#: EXPECT_CALL(foo_, Bar(Ref(s), _, Ge(0)))...
            Actual: -0.1
          Expected: to be called once
            Actual: never called - unsatisfied and active
+
 [  FAILED  ] GMockOutputTest.MismatchArguments
 [ RUN      ] GMockOutputTest.MismatchWith
 unknown file: Failure
@@ -194,6 +205,7 @@ FILE:#: EXPECT_CALL(foo_, Bar2(Ge(2), Ge(1)))...
            Actual: don't match
          Expected: to be called once
            Actual: never called - unsatisfied and active
+
 [  FAILED  ] GMockOutputTest.MismatchWith
 [ RUN      ] GMockOutputTest.MismatchArgumentsAndWith
 unknown file: Failure
@@ -210,6 +222,7 @@ FILE:#: EXPECT_CALL(foo_, Bar2(Ge(2), Ge(1)))...
            Actual: don't match
          Expected: to be called once
            Actual: never called - unsatisfied and active
+
 [  FAILED  ] GMockOutputTest.MismatchArgumentsAndWith
 [ RUN      ] GMockOutputTest.UnexpectedCallWithDefaultAction
 unknown file: Failure
@@ -227,6 +240,7 @@ FILE:#: EXPECT_CALL(foo_, Bar2(2, 2))...
            Actual: 0
          Expected: to be called once
            Actual: never called - unsatisfied and active
+
 unknown file: Failure
 
 Unexpected mock function call - taking default action specified at:
@@ -242,6 +256,7 @@ FILE:#: EXPECT_CALL(foo_, Bar2(2, 2))...
            Actual: 0
          Expected: to be called once
            Actual: never called - unsatisfied and active
+
 [  FAILED  ] GMockOutputTest.UnexpectedCallWithDefaultAction
 [ RUN      ] GMockOutputTest.ExcessiveCallWithDefaultAction
 FILE:#: Failure
@@ -251,6 +266,7 @@ FILE:#:
           Returns: true
          Expected: to be called once
            Actual: called twice - over-saturated and active
+
 FILE:#: Failure
 Mock function called more times than expected - taking default action specified at:
 FILE:#:
@@ -258,6 +274,7 @@ FILE:#:
           Returns: false
          Expected: to be called once
            Actual: called twice - over-saturated and active
+
 [  FAILED  ] GMockOutputTest.ExcessiveCallWithDefaultAction
 [ RUN      ] GMockOutputTest.UninterestingCallWithDefaultAction
 
@@ -266,14 +283,14 @@ Uninteresting mock function call - taking default action specified at:
 FILE:#:
     Function call: Bar2(2, 2)
           Returns: true
-NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by blindly adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/master/docs/gmock_cook_book.md#knowing-when-to-expect for details.
+NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/main/docs/gmock_cook_book.md#knowing-when-to-expect-useoncall for details.
 
 GMOCK WARNING:
 Uninteresting mock function call - taking default action specified at:
 FILE:#:
     Function call: Bar2(1, 1)
           Returns: false
-NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by blindly adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/master/docs/gmock_cook_book.md#knowing-when-to-expect for details.
+NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/main/docs/gmock_cook_book.md#knowing-when-to-expect-useoncall for details.
 [       OK ] GMockOutputTest.UninterestingCallWithDefaultAction
 [ RUN      ] GMockOutputTest.ExplicitActionsRunOutWithDefaultAction
 
@@ -292,7 +309,8 @@ Stack trace:
 FILE:#: Failure
 Value of: (std::pair<int, bool>(42, true))
 Expected: is pair (first: is >= 48, second: true)
-  Actual: (42, true) (of type std::pair<int, bool>)
+  Actual: (42, true) (of type std::pair<int,bool>)
+
 [  FAILED  ] GMockOutputTest.PrintsMatcher
 [  FAILED  ] GMockOutputTest.UnexpectedCall
 [  FAILED  ] GMockOutputTest.UnexpectedCallToVoidFunction

googlemock/test/gmock_test.cc

@@ -174,6 +174,6 @@ TEST(WideInitGoogleMockTest, ParsesGoogleMockFlagAndUnrecognizedFlag) {
 // Makes sure Google Mock flags can be accessed in code.
 TEST(FlagTest, IsAccessibleInCode) {
   bool dummy =
-      GMOCK_FLAG_GET(catch_leaked_mocks) && GMOCK_FLAG_GET(verbose) == "";
+      GMOCK_FLAG_GET(catch_leaked_mocks) && GMOCK_FLAG_GET(verbose).empty();
   (void)dummy;  // Avoids the "unused local variable" warning.
 }

googlemock/test/gmock_test_utils.py

@@ -77,9 +77,6 @@ def GetExitStatus(exit_code):
       return -1
 
 
-# Suppresses the "Invalid const name" lint complaint
-# pylint: disable-msg=C6409
-
 # Exposes utilities from gtest_test_utils.
 Subprocess = gtest_test_utils.Subprocess
 TestCase = gtest_test_utils.TestCase
@@ -87,8 +84,6 @@ environ = gtest_test_utils.environ
 SetEnvVar = gtest_test_utils.SetEnvVar
 PREMATURE_EXIT_FILE_ENV_VAR = gtest_test_utils.PREMATURE_EXIT_FILE_ENV_VAR
 
-# pylint: enable-msg=C6409
-
 
 def Main():
   """Runs the unit test."""

googletest/CMakeLists.txt

@@ -5,7 +5,7 @@
 # CMake build script for Google Test.
 #
 # To run the tests for Google Test itself on Linux, use 'make test' or
-# ctest.  You can select which tests to run using 'ctest -R regex'.
+# ctest. You can select which tests to run using 'ctest -R regex'.
 # For more options, run 'ctest --help'.
 
 # When other libraries are using a shared version of runtime libraries,
@@ -35,7 +35,7 @@ endif()
 
 ########################################################################
 #
-# Project-wide settings
+# Project-wide settings.
 
 # Name of the project.
 #
@@ -44,21 +44,16 @@ endif()
 # ${gtest_BINARY_DIR}.
 # Language "C" is required for find_package(Threads).
 
-# Project version:
+# Project version.
 
-cmake_minimum_required(VERSION 3.5)
-cmake_policy(SET CMP0048 NEW)
+cmake_minimum_required(VERSION 3.13)
 project(gtest VERSION ${GOOGLETEST_VERSION} LANGUAGES CXX C)
 
-if (POLICY CMP0063) # Visibility
-  cmake_policy(SET CMP0063 NEW)
-endif (POLICY CMP0063)
-
 if (COMMAND set_up_hermetic_build)
   set_up_hermetic_build()
 endif()
 
-# These commands only run if this is the main project
+# These commands only run if this is the main project.
 if(CMAKE_PROJECT_NAME STREQUAL "gtest" OR CMAKE_PROJECT_NAME STREQUAL "googletest-distribution")
 
   # BUILD_SHARED_LIBS is a standard CMake variable, but we declare it here to
@@ -88,7 +83,7 @@ include(cmake/internal_utils.cmake)
 config_compiler_and_linker()  # Defined in internal_utils.cmake.
 
 # Needed to set the namespace for both the export targets and the
-# alias libraries
+# alias libraries.
 set(cmake_package_name GTest CACHE INTERNAL "")
 
 # Create the CMake package file descriptors.
@@ -100,12 +95,14 @@ if (INSTALL_GTEST)
   set(version_file "${generated_dir}/${cmake_package_name}ConfigVersion.cmake")
   write_basic_package_version_file(${version_file} VERSION ${GOOGLETEST_VERSION} COMPATIBILITY AnyNewerVersion)
   install(EXPORT ${targets_export_name}
+    COMPONENT "${PROJECT_NAME}"
     NAMESPACE ${cmake_package_name}::
     DESTINATION ${cmake_files_install_dir})
   set(config_file "${generated_dir}/${cmake_package_name}Config.cmake")
   configure_package_config_file("${gtest_SOURCE_DIR}/cmake/Config.cmake.in"
     "${config_file}" INSTALL_DESTINATION ${cmake_files_install_dir})
   install(FILES ${version_file} ${config_file}
+    COMPONENT "${PROJECT_NAME}"
     DESTINATION ${cmake_files_install_dir})
 endif()
 
@@ -117,44 +114,52 @@ include_directories(${gtest_build_include_dirs})
 
 ########################################################################
 #
-# Defines the gtest & gtest_main libraries.  User tests should link
+# Defines the gtest & gtest_main libraries. User tests should link
 # with one of them.
 
-# Google Test libraries.  We build them using more strict warnings than what
+# Google Test libraries. We build them using more strict warnings than what
 # are used for other targets, to ensure that gtest can be compiled by a user
 # aggressive about warnings.
 cxx_library(gtest "${cxx_strict}" src/gtest-all.cc)
 set_target_properties(gtest PROPERTIES VERSION ${GOOGLETEST_VERSION})
+if(GTEST_HAS_ABSL)
+  target_compile_definitions(gtest PUBLIC GTEST_HAS_ABSL=1)
+  target_link_libraries(gtest PUBLIC
+    absl::failure_signal_handler
+    absl::stacktrace
+    absl::symbolize
+    absl::flags_parse
+    absl::flags_reflection
+    absl::flags_usage
+    absl::strings
+    re2::re2
+  )
+endif()
 cxx_library(gtest_main "${cxx_strict}" src/gtest_main.cc)
 set_target_properties(gtest_main PROPERTIES VERSION ${GOOGLETEST_VERSION})
-# If the CMake version supports it, attach header directory information
-# to the targets for when we are part of a parent build (ie being pulled
-# in via add_subdirectory() rather than being a standalone build).
-if (DEFINED CMAKE_VERSION AND NOT "${CMAKE_VERSION}" VERSION_LESS "2.8.11")
-  string(REPLACE ";" "$<SEMICOLON>" dirs "${gtest_build_include_dirs}")
-  target_include_directories(gtest SYSTEM INTERFACE
-    "$<BUILD_INTERFACE:${dirs}>"
-    "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/${CMAKE_INSTALL_INCLUDEDIR}>")
-  target_include_directories(gtest_main SYSTEM INTERFACE
-    "$<BUILD_INTERFACE:${dirs}>"
-    "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/${CMAKE_INSTALL_INCLUDEDIR}>")
-endif()
-if(CMAKE_SYSTEM_NAME MATCHES "QNX")
+string(REPLACE ";" "$<SEMICOLON>" dirs "${gtest_build_include_dirs}")
+target_include_directories(gtest SYSTEM INTERFACE
+  "$<BUILD_INTERFACE:${dirs}>"
+  "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/${CMAKE_INSTALL_INCLUDEDIR}>")
+target_include_directories(gtest_main SYSTEM INTERFACE
+  "$<BUILD_INTERFACE:${dirs}>"
+  "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/${CMAKE_INSTALL_INCLUDEDIR}>")
+if(CMAKE_SYSTEM_NAME MATCHES "QNX" AND CMAKE_SYSTEM_VERSION VERSION_GREATER_EQUAL 7.1)
   target_link_libraries(gtest PUBLIC regex)
 endif()
 target_link_libraries(gtest_main PUBLIC gtest)
 
 ########################################################################
 #
-# Install rules
+# Install rules.
 install_project(gtest gtest_main)
 
 ########################################################################
 #
 # Samples on how to link user tests with gtest or gtest_main.
 #
-# They are not built by default.  To build them, set the
-# gtest_build_samples option to ON.  You can do it by running ccmake
+# They are not built by default. To build them, set the
+# gtest_build_samples option to ON. You can do it by running ccmake
 # or specifying the -Dgtest_build_samples=ON flag when running cmake.
 
 if (gtest_build_samples)
@@ -177,8 +182,8 @@ endif()
 # You can skip this section if you aren't interested in testing
 # Google Test itself.
 #
-# The tests are not built by default.  To build them, set the
-# gtest_build_tests option to ON.  You can do it by running ccmake
+# The tests are not built by default. To build them, set the
+# gtest_build_tests option to ON. You can do it by running ccmake
 # or specifying the -Dgtest_build_tests=ON flag when running cmake.
 
 if (gtest_build_tests)
@@ -260,7 +265,7 @@ if (gtest_build_tests)
   py_test(gtest_skip_environment_check_output_test)
 
   # Visual Studio .NET 2003 does not support STL with exceptions disabled.
-  if (NOT MSVC OR MSVC_VERSION GREATER 1310)  # 1310 is Visual Studio .NET 2003
+  if (NOT MSVC OR MSVC_VERSION GREATER 1310) # 1310 is Visual Studio .NET 2003
     cxx_executable_with_flags(
       googletest-catch-exceptions-no-ex-test_
       "${cxx_no_exception}"

googletest/README.md

@@ -9,10 +9,10 @@ depends on which build system you use, and is usually straightforward.
 ### Build with CMake
 
 GoogleTest comes with a CMake build script
-([CMakeLists.txt](https://github.com/google/googletest/blob/master/CMakeLists.txt))
+([CMakeLists.txt](https://github.com/google/googletest/blob/main/CMakeLists.txt))
 that can be used on a wide range of platforms ("C" stands for cross-platform.).
 If you don't have CMake installed already, you can download it for free from
-<http://www.cmake.org/>.
+<https://cmake.org/>.
 
 CMake works by generating native makefiles or build projects that can be used in
 the compiler environment of your choice. You can either build GoogleTest as a
@@ -25,7 +25,7 @@ When building GoogleTest as a standalone project, the typical workflow starts
 with
 
 ```
-git clone https://github.com/google/googletest.git -b release-1.11.0
+git clone https://github.com/google/googletest.git -b v1.17.0
 cd googletest        # Main directory of the cloned repository.
 mkdir build          # Create a directory to hold the build output.
 cd build
@@ -94,7 +94,7 @@ include(FetchContent)
 FetchContent_Declare(
   googletest
   # Specify the commit you depend on and update it regularly.
-  URL https://github.com/google/googletest/archive/e2239ee6043f73722e7aa812a459f54a28552929.zip
+  URL https://github.com/google/googletest/archive/5376968f6948923e2411081fd9372e71a59d8e77.zip
 )
 # For Windows: Prevent overriding the parent project's compiler/linker settings
 set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
@@ -124,12 +124,12 @@ match the project in which it is included.
 
 #### C++ Standard Version
 
-An environment that supports C++11 is required in order to successfully build
+An environment that supports C++17 is required in order to successfully build
 GoogleTest. One way to ensure this is to specify the standard in the top-level
-project, for example by using the `set(CMAKE_CXX_STANDARD 11)` command. If this
-is not feasible, for example in a C project using GoogleTest for validation,
-then it can be specified by adding it to the options for cmake via the
-`DCMAKE_CXX_FLAGS` option.
+project, for example by using the `set(CMAKE_CXX_STANDARD 17)` command along
+with `set(CMAKE_CXX_STANDARD_REQUIRED ON)`. If this is not feasible, for example
+in a C project using GoogleTest for validation, then it can be specified by
+adding it to the options for cmake via the`-DCMAKE_CXX_FLAGS` option.
 
 ### Tweaking GoogleTest
 
@@ -140,23 +140,27 @@ command line. Generally, these macros are named like `GTEST_XYZ` and you define
 them to either 1 or 0 to enable or disable a certain feature.
 
 We list the most frequently used macros below. For a complete list, see file
-[include/gtest/internal/gtest-port.h](https://github.com/google/googletest/blob/master/googletest/include/gtest/internal/gtest-port.h).
+[include/gtest/internal/gtest-port.h](https://github.com/google/googletest/blob/main/googletest/include/gtest/internal/gtest-port.h).
 
 ### Multi-threaded Tests
 
 GoogleTest is thread-safe where the pthread library is available. After
-`#include "gtest/gtest.h"`, you can check the
-`GTEST_IS_THREADSAFE` macro to see whether this is the case (yes if the macro is
-`#defined` to 1, no if it's undefined.).
+`#include <gtest/gtest.h>`, you can check the `GTEST_IS_THREADSAFE` macro to see
+whether this is the case (yes if the macro is `#defined` to 1, no if it's
+undefined.).
 
 If GoogleTest doesn't correctly detect whether pthread is available in your
 environment, you can force it with
 
-    -DGTEST_HAS_PTHREAD=1
+```
+-DGTEST_HAS_PTHREAD=1
+```
 
 or
 
-    -DGTEST_HAS_PTHREAD=0
+```
+-DGTEST_HAS_PTHREAD=0
+```
 
 When GoogleTest uses pthread, you may need to add flags to your compiler and/or
 linker to select the pthread library, or you'll get link errors. If you use the
@@ -172,23 +176,27 @@ as a DLL on Windows) if you prefer.
 
 To compile *gtest* as a shared library, add
 
-    -DGTEST_CREATE_SHARED_LIBRARY=1
+```
+-DGTEST_CREATE_SHARED_LIBRARY=1
+```
 
 to the compiler flags. You'll also need to tell the linker to produce a shared
 library instead - consult your linker's manual for how to do it.
 
 To compile your *tests* that use the gtest shared library, add
 
-    -DGTEST_LINKED_AS_SHARED_LIBRARY=1
+```
+-DGTEST_LINKED_AS_SHARED_LIBRARY=1
+```
 
 to the compiler flags.
 
 Note: while the above steps aren't technically necessary today when using some
 compilers (e.g. GCC), they may become necessary in the future, if we decide to
 improve the speed of loading the library (see
-<http://gcc.gnu.org/wiki/Visibility> for details). Therefore you are recommended
-to always add the above flags when using GoogleTest as a shared library.
-Otherwise a future release of GoogleTest may break your build script.
+<https://gcc.gnu.org/wiki/Visibility> for details). Therefore you are
+recommended to always add the above flags when using GoogleTest as a shared
+library. Otherwise a future release of GoogleTest may break your build script.
 
 ### Avoiding Macro Name Clashes
 
@@ -200,7 +208,9 @@ rename its macro to avoid the conflict.
 Specifically, if both GoogleTest and some other code define macro FOO, you can
 add
 
-    -DGTEST_DONT_DEFINE_FOO=1
+```
+-DGTEST_DONT_DEFINE_FOO=1
+```
 
 to the compiler flags to tell GoogleTest to change the macro's name from `FOO`
 to `GTEST_FOO`. Currently `FOO` can be `ASSERT_EQ`, `ASSERT_FALSE`, `ASSERT_GE`,
@@ -208,10 +218,14 @@ to `GTEST_FOO`. Currently `FOO` can be `ASSERT_EQ`, `ASSERT_FALSE`, `ASSERT_GE`,
 `EXPECT_FALSE`, `EXPECT_TRUE`, `FAIL`, `SUCCEED`, `TEST`, or `TEST_F`. For
 example, with `-DGTEST_DONT_DEFINE_TEST=1`, you'll need to write
 
-    GTEST_TEST(SomeTest, DoesThis) { ... }
+```
+GTEST_TEST(SomeTest, DoesThis) { ... }
+```
 
 instead of
 
-    TEST(SomeTest, DoesThis) { ... }
+```
+TEST(SomeTest, DoesThis) { ... }
+```
 
 in order to define a test.

googletest/cmake/Config.cmake.in

@@ -4,6 +4,10 @@ if (@GTEST_HAS_PTHREAD@)
   set(THREADS_PREFER_PTHREAD_FLAG @THREADS_PREFER_PTHREAD_FLAG@)
   find_dependency(Threads)
 endif()
+if (@GTEST_HAS_ABSL@)
+  find_dependency(absl)
+  find_dependency(re2)
+endif()
 
 include("${CMAKE_CURRENT_LIST_DIR}/@targets_export_name@.cmake")
 check_required_components("@project_name@")

googletest/cmake/internal_utils.cmake

@@ -12,17 +12,14 @@
 #   Test and Google Mock's option() definitions, and thus must be
 #   called *after* the options have been defined.
 
-if (POLICY CMP0054)
-  cmake_policy(SET CMP0054 NEW)
-endif (POLICY CMP0054)
-
 # Tweaks CMake's default compiler/linker settings to suit Google Test's needs.
 #
 # This must be a macro(), as inside a function string() can only
 # update variables in the function scope.
 macro(fix_default_compiler_settings_)
-  if (MSVC)
-    # For MSVC, CMake sets certain flags to defaults we want to override.
+  if (CMAKE_CXX_COMPILER_ID MATCHES "MSVC|Clang")
+    # For MSVC and Clang, CMake sets certain flags to defaults we want to
+    # override.
     # This replacement code is taken from sample in the CMake Wiki at
     # https://gitlab.kitware.com/cmake/community/wikis/FAQ#dynamic-replace.
     foreach (flag_var
@@ -32,13 +29,17 @@ macro(fix_default_compiler_settings_)
              CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
       if (NOT BUILD_SHARED_LIBS AND NOT gtest_force_shared_crt)
         # When Google Test is built as a shared library, it should also use
-        # shared runtime libraries.  Otherwise, it may end up with multiple
+        # shared runtime libraries. Otherwise, it may end up with multiple
         # copies of runtime library data in different modules, resulting in
         # hard-to-find crashes. When it is built as a static library, it is
         # preferable to use CRT as static libraries, as we don't have to rely
         # on CRT DLLs being available. CMake always defaults to using shared
         # CRT libraries, so we override that default here.
         string(REPLACE "/MD" "-MT" ${flag_var} "${${flag_var}}")
+
+        # When using Ninja with Clang, static builds pass -D_DLL on Windows.
+        # This is incorrect and should not happen, so we fix that here.
+        string(REPLACE "-D_DLL" "" ${flag_var} "${${flag_var}}")
       endif()
 
       # We prefer more strict warning checking for building Google Test.
@@ -54,11 +55,11 @@ macro(fix_default_compiler_settings_)
 endmacro()
 
 # Defines the compiler/linker flags used to build Google Test and
-# Google Mock.  You can tweak these definitions to suit your need.  A
+# Google Mock. You can tweak these definitions to suit your need. A
 # variable's value is empty before it's explicitly assigned to.
 macro(config_compiler_and_linker)
   # Note: pthreads on MinGW is not supported, even if available
-  # instead, we use windows threading primitives
+  # instead, we use windows threading primitives.
   unset(GTEST_HAS_PTHREAD)
   if (NOT gtest_disable_pthreads AND NOT MINGW)
     # Defines CMAKE_USE_PTHREADS_INIT and CMAKE_THREAD_LIBS_INIT.
@@ -78,26 +79,38 @@ macro(config_compiler_and_linker)
     set(cxx_exception_flags "-EHsc -D_HAS_EXCEPTIONS=1")
     set(cxx_no_exception_flags "-EHs-c- -D_HAS_EXCEPTIONS=0")
     set(cxx_no_rtti_flags "-GR-")
-    # Suppress "unreachable code" warning
-    # http://stackoverflow.com/questions/3232669 explains the issue.
+    # Suppress "unreachable code" warning,
+    # https://stackoverflow.com/questions/3232669 explains the issue.
     set(cxx_base_flags "${cxx_base_flags} -wd4702")
     # Ensure MSVC treats source files as UTF-8 encoded.
-    set(cxx_base_flags "${cxx_base_flags} -utf-8")
-  elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
-    set(cxx_base_flags "-Wall -Wshadow -Wconversion")
+    if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
+      set(cxx_base_flags "${cxx_base_flags} -utf-8")
+    endif()
+    if (CMAKE_CXX_COMPILER_ID STREQUAL "IntelLLVM")
+      set(cxx_base_flags "${cxx_base_flags} /fp:precise -Wno-inconsistent-missing-override -Wno-microsoft-exception-spec -Wno-unused-function -Wno-unused-but-set-variable")
+    endif()
+  elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR
+      CMAKE_CXX_COMPILER_ID STREQUAL "IntelLLVM")
+    set(cxx_base_flags "-Wall -Wshadow -Wconversion -Wundef")
     set(cxx_exception_flags "-fexceptions")
     set(cxx_no_exception_flags "-fno-exceptions")
-    set(cxx_strict_flags "-W -Wpointer-arith -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wunused-parameter -Wcast-align -Wchar-subscripts -Winline -Wredundant-decls")
+    set(cxx_strict_flags "-W -Wpointer-arith -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wunused-parameter -Wcast-align -Winline -Wredundant-decls")
     set(cxx_no_rtti_flags "-fno-rtti")
+    if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+      set(cxx_strict_flags "${cxx_strict_flags} -Wchar-subscripts")
+    endif()
+    if (CMAKE_CXX_COMPILER_ID STREQUAL "IntelLLVM")
+      set(cxx_base_flags "${cxx_base_flags} -Wno-implicit-float-size-conversion -ffp-model=precise")
+    endif()
   elseif (CMAKE_COMPILER_IS_GNUCXX)
-    set(cxx_base_flags "-Wall -Wshadow")
+    set(cxx_base_flags "-Wall -Wshadow -Wundef")
     if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.0.0)
       set(cxx_base_flags "${cxx_base_flags} -Wno-error=dangling-else")
     endif()
     set(cxx_exception_flags "-fexceptions")
     set(cxx_no_exception_flags "-fno-exceptions")
     # Until version 4.3.2, GCC doesn't define a macro to indicate
-    # whether RTTI is enabled.  Therefore we define GTEST_HAS_RTTI
+    # whether RTTI is enabled. Therefore we define GTEST_HAS_RTTI
     # explicitly.
     set(cxx_no_rtti_flags "-fno-rtti -DGTEST_HAS_RTTI=0")
     set(cxx_strict_flags
@@ -114,7 +127,7 @@ macro(config_compiler_and_linker)
     set(cxx_exception_flags "-qeh")
     set(cxx_no_exception_flags "-qnoeh")
     # Until version 9.0, Visual Age doesn't define a macro to indicate
-    # whether RTTI is enabled.  Therefore we define GTEST_HAS_RTTI
+    # whether RTTI is enabled. Therefore we define GTEST_HAS_RTTI
     # explicitly.
     set(cxx_no_rtti_flags "-qnortti -DGTEST_HAS_RTTI=0")
   elseif (CMAKE_CXX_COMPILER_ID STREQUAL "HP")
@@ -144,7 +157,7 @@ macro(config_compiler_and_linker)
   set(cxx_strict "${cxx_default} ${cxx_strict_flags}")
 endmacro()
 
-# Defines the gtest & gtest_main libraries.  User tests should link
+# Defines the gtest & gtest_main libraries. User tests should link
 # with one of them.
 function(cxx_library_with_type name type cxx_flags)
   # type can be either STATIC or SHARED to denote a static or shared library.
@@ -154,14 +167,15 @@ function(cxx_library_with_type name type cxx_flags)
   set_target_properties(${name}
     PROPERTIES
     COMPILE_FLAGS "${cxx_flags}")
-  # Set the output directory for build artifacts
+  # Set the output directory for build artifacts.
   set_target_properties(${name}
     PROPERTIES
     RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin"
     LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib"
     ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib"
-    PDB_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
-  # make PDBs match library name
+    PDB_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin"
+    COMPILE_PDB_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib")
+  # Make PDBs match library name.
   get_target_property(pdb_debug_postfix ${name} DEBUG_POSTFIX)
   set_target_properties(${name}
     PROPERTIES
@@ -174,23 +188,14 @@ function(cxx_library_with_type name type cxx_flags)
     set_target_properties(${name}
       PROPERTIES
       COMPILE_DEFINITIONS "GTEST_CREATE_SHARED_LIBRARY=1")
-    if (NOT "${CMAKE_VERSION}" VERSION_LESS "2.8.11")
-      target_compile_definitions(${name} INTERFACE
-        $<INSTALL_INTERFACE:GTEST_LINKED_AS_SHARED_LIBRARY=1>)
-    endif()
+    target_compile_definitions(${name} INTERFACE
+      $<INSTALL_INTERFACE:GTEST_LINKED_AS_SHARED_LIBRARY=1>)
   endif()
   if (DEFINED GTEST_HAS_PTHREAD)
-    if ("${CMAKE_VERSION}" VERSION_LESS "3.1.0")
-      set(threads_spec ${CMAKE_THREAD_LIBS_INIT})
-    else()
-      set(threads_spec Threads::Threads)
-    endif()
-    target_link_libraries(${name} PUBLIC ${threads_spec})
+    target_link_libraries(${name} PUBLIC Threads::Threads)
   endif()
 
-  if (NOT "${CMAKE_VERSION}" VERSION_LESS "3.8")
-    target_compile_features(${name} PUBLIC cxx_std_11)
-  endif()
+  target_compile_features(${name} PUBLIC cxx_std_17)
 endfunction()
 
 ########################################################################
@@ -207,7 +212,7 @@ endfunction()
 
 # cxx_executable_with_flags(name cxx_flags libs srcs...)
 #
-# creates a named C++ executable that depends on the given libraries and
+# Creates a named C++ executable that depends on the given libraries and
 # is built from the given source files with the given compiler flags.
 function(cxx_executable_with_flags name cxx_flags libs)
   add_executable(${name} ${ARGN})
@@ -234,26 +239,21 @@ endfunction()
 
 # cxx_executable(name dir lib srcs...)
 #
-# creates a named target that depends on the given libs and is built
-# from the given source files.  dir/name.cc is implicitly included in
+# Creates a named target that depends on the given libs and is built
+# from the given source files. dir/name.cc is implicitly included in
 # the source file list.
 function(cxx_executable name dir libs)
   cxx_executable_with_flags(
     ${name} "${cxx_default}" "${libs}" "${dir}/${name}.cc" ${ARGN})
 endfunction()
 
-# Sets PYTHONINTERP_FOUND and PYTHON_EXECUTABLE.
-if ("${CMAKE_VERSION}" VERSION_LESS "3.12.0")
-  find_package(PythonInterp)
-else()
-  find_package(Python COMPONENTS Interpreter)
-  set(PYTHONINTERP_FOUND ${Python_Interpreter_FOUND})
-  set(PYTHON_EXECUTABLE ${Python_EXECUTABLE})
+if(gtest_build_tests)
+  find_package(Python3)
 endif()
 
 # cxx_test_with_flags(name cxx_flags libs srcs...)
 #
-# creates a named C++ test that depends on the given libs and is built
+# Creates a named C++ test that depends on the given libs and is built
 # from the given source files with the given compiler flags.
 function(cxx_test_with_flags name cxx_flags libs)
   cxx_executable_with_flags(${name} "${cxx_flags}" "${libs}" ${ARGN})
@@ -262,8 +262,8 @@ endfunction()
 
 # cxx_test(name libs srcs...)
 #
-# creates a named test target that depends on the given libs and is
-# built from the given source files.  Unlike cxx_test_with_flags,
+# Creates a named test target that depends on the given libs and is
+# built from the given source files. Unlike cxx_test_with_flags,
 # test/name.cc is already implicitly included in the source file list.
 function(cxx_test name libs)
   cxx_test_with_flags("${name}" "${cxx_default}" "${libs}"
@@ -272,37 +272,25 @@ endfunction()
 
 # py_test(name)
 #
-# creates a Python test with the given name whose main module is in
-# test/name.py.  It does nothing if Python is not installed.
+# Creates a Python test with the given name whose main module is in
+# test/name.py. It does nothing if Python is not installed.
 function(py_test name)
-  if (PYTHONINTERP_FOUND)
-    if ("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" VERSION_GREATER 3.1)
-      if (CMAKE_CONFIGURATION_TYPES)
-        # Multi-configuration build generators as for Visual Studio save
-        # output in a subdirectory of CMAKE_CURRENT_BINARY_DIR (Debug,
-        # Release etc.), so we have to provide it here.
-        add_test(NAME ${name}
-          COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
-              --build_dir=${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG> ${ARGN})
-      else (CMAKE_CONFIGURATION_TYPES)
-        # Single-configuration build generators like Makefile generators
-        # don't have subdirs below CMAKE_CURRENT_BINARY_DIR.
-        add_test(NAME ${name}
-          COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
-            --build_dir=${CMAKE_CURRENT_BINARY_DIR} ${ARGN})
-      endif (CMAKE_CONFIGURATION_TYPES)
-    else()
-      # ${CMAKE_CURRENT_BINARY_DIR} is known at configuration time, so we can
-      # directly bind it from cmake. ${CTEST_CONFIGURATION_TYPE} is known
-      # only at ctest runtime (by calling ctest -c <Configuration>), so
-      # we have to escape $ to delay variable substitution here.
-      add_test(NAME ${name}
-        COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
-          --build_dir=${CMAKE_CURRENT_BINARY_DIR}/\${CTEST_CONFIGURATION_TYPE} ${ARGN})
-    endif()
-    # Make the Python import path consistent between Bazel and CMake.
-    set_tests_properties(${name} PROPERTIES ENVIRONMENT PYTHONPATH=${CMAKE_SOURCE_DIR})
-  endif(PYTHONINTERP_FOUND)
+  if (NOT Python3_Interpreter_FOUND)
+    return()
+  endif()
+
+  get_cmake_property(is_multi "GENERATOR_IS_MULTI_CONFIG")
+  set(build_dir "${CMAKE_CURRENT_BINARY_DIR}")
+  if (is_multi)
+    set(build_dir "${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG>")
+  endif()
+
+  add_test(NAME ${name}
+      COMMAND Python3::Interpreter ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
+          --build_dir=${build_dir} ${ARGN})
+
+  # Make the Python import path consistent between Bazel and CMake.
+  set_tests_properties(${name} PROPERTIES ENVIRONMENT PYTHONPATH=${CMAKE_SOURCE_DIR})
 endfunction()
 
 # install_project(targets...)
@@ -311,21 +299,24 @@ endfunction()
 function(install_project)
   if(INSTALL_GTEST)
     install(DIRECTORY "${PROJECT_SOURCE_DIR}/include/"
+      COMPONENT "${PROJECT_NAME}"
       DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
     # Install the project targets.
     install(TARGETS ${ARGN}
       EXPORT ${targets_export_name}
+      COMPONENT "${PROJECT_NAME}"
       RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
       ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
       LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}")
     if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
-      # Install PDBs
+      # Install PDBs.
       foreach(t ${ARGN})
         get_target_property(t_pdb_name ${t} COMPILE_PDB_NAME)
         get_target_property(t_pdb_name_debug ${t} COMPILE_PDB_NAME_DEBUG)
         get_target_property(t_pdb_output_directory ${t} PDB_OUTPUT_DIRECTORY)
         install(FILES
           "${t_pdb_output_directory}/\${CMAKE_INSTALL_CONFIG_NAME}/$<$<CONFIG:Debug>:${t_pdb_name_debug}>$<$<NOT:$<CONFIG:Debug>>:${t_pdb_name}>.pdb"
+          COMPONENT "${PROJECT_NAME}"
           DESTINATION ${CMAKE_INSTALL_LIBDIR}
           OPTIONAL)
       endforeach()
@@ -336,6 +327,7 @@ function(install_project)
       configure_file("${PROJECT_SOURCE_DIR}/cmake/${t}.pc.in"
         "${configured_pc}" @ONLY)
       install(FILES "${configured_pc}"
+        COMPONENT "${PROJECT_NAME}"
         DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
     endforeach()
   endif()

googletest/include/gtest/gtest-assertion-result.h

@@ -130,6 +130,13 @@ namespace testing {
 //   Expected: Foo() is even
 //     Actual: it's 5
 //
+
+// Returned AssertionResult objects may not be ignored.
+// Note: Disabled for SWIG as it doesn't parse attributes correctly.
+#if !defined(SWIG)
+class [[nodiscard]] AssertionResult;
+#endif  // !SWIG
+
 class GTEST_API_ AssertionResult {
  public:
   // Copy constructor.
@@ -181,7 +188,7 @@ class GTEST_API_ AssertionResult {
   // assertion's expectation). When nothing has been streamed into the
   // object, returns an empty string.
   const char* message() const {
-    return message_.get() != nullptr ? message_->c_str() : "";
+    return message_ != nullptr ? message_->c_str() : "";
   }
   // Deprecated; please use message() instead.
   const char* failure_message() const { return message(); }
@@ -204,7 +211,7 @@ class GTEST_API_ AssertionResult {
  private:
   // Appends the contents of message to message_.
   void AppendMessage(const Message& a_message) {
-    if (message_.get() == nullptr) message_.reset(new ::std::string);
+    if (message_ == nullptr) message_ = ::std::make_unique<::std::string>();
     message_->append(a_message.GetString().c_str());
   }
 

googletest/include/gtest/gtest-death-test.h

@@ -51,7 +51,7 @@ GTEST_DECLARE_string_(death_test_style);
 
 namespace testing {
 
-#if GTEST_HAS_DEATH_TEST
+#ifdef GTEST_HAS_DEATH_TEST
 
 namespace internal {
 
@@ -203,7 +203,7 @@ class GTEST_API_ ExitedWithCode {
   const int exit_code_;
 };
 
-#if !GTEST_OS_WINDOWS && !GTEST_OS_FUCHSIA
+#if !defined(GTEST_OS_WINDOWS) && !defined(GTEST_OS_FUCHSIA)
 // Tests that an exit code describes an exit due to termination by a
 // given signal.
 class GTEST_API_ KilledBySignal {
@@ -293,8 +293,8 @@ class GTEST_API_ KilledBySignal {
 //                statement is compiled but not executed, to ensure that
 //                EXPECT_DEATH_IF_SUPPORTED compiles with a certain
 //                parameter if and only if EXPECT_DEATH compiles with it.
-//   regex     -  A regex that a macro such as EXPECT_DEATH would use to test
-//                the output of statement.  This parameter has to be
+//   regex_or_matcher -  A regex that a macro such as EXPECT_DEATH would use
+//                to test the output of statement.  This parameter has to be
 //                compiled but not evaluated by this macro, to ensure that
 //                this macro only accepts expressions that a macro such as
 //                EXPECT_DEATH would accept.
@@ -311,13 +311,13 @@ class GTEST_API_ KilledBySignal {
 //  statement unconditionally returns or throws. The Message constructor at
 //  the end allows the syntax of streaming additional messages into the
 //  macro, for compilational compatibility with EXPECT_DEATH/ASSERT_DEATH.
-#define GTEST_UNSUPPORTED_DEATH_TEST(statement, regex, terminator)             \
+#define GTEST_UNSUPPORTED_DEATH_TEST(statement, regex_or_matcher, terminator)  \
   GTEST_AMBIGUOUS_ELSE_BLOCKER_                                                \
   if (::testing::internal::AlwaysTrue()) {                                     \
     GTEST_LOG_(WARNING) << "Death tests are not supported on this platform.\n" \
                         << "Statement '" #statement "' cannot be verified.";   \
   } else if (::testing::internal::AlwaysFalse()) {                             \
-    ::testing::internal::RE::PartialMatch(".*", (regex));                      \
+    ::testing::internal::MakeDeathTestMatcher(regex_or_matcher);               \
     GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement);                 \
     terminator;                                                                \
   } else                                                                       \
@@ -328,7 +328,7 @@ class GTEST_API_ KilledBySignal {
 // death tests are supported; otherwise they just issue a warning.  This is
 // useful when you are combining death test assertions with normal test
 // assertions in one test.
-#if GTEST_HAS_DEATH_TEST
+#ifdef GTEST_HAS_DEATH_TEST
 #define EXPECT_DEATH_IF_SUPPORTED(statement, regex) \
   EXPECT_DEATH(statement, regex)
 #define ASSERT_DEATH_IF_SUPPORTED(statement, regex) \

googletest/include/gtest/gtest-matchers.h

@@ -40,6 +40,7 @@
 #define GOOGLETEST_INCLUDE_GTEST_GTEST_MATCHERS_H_
 
 #include <atomic>
+#include <functional>
 #include <memory>
 #include <ostream>
 #include <string>
@@ -66,10 +67,10 @@ namespace testing {
 // To implement a matcher Foo for type T, define:
 //   1. a class FooMatcherMatcher that implements the matcher interface:
 //     using is_gtest_matcher = void;
-//     bool MatchAndExplain(const T&, std::ostream*);
+//     bool MatchAndExplain(const T&, std::ostream*) const;
 //       (MatchResultListener* can also be used instead of std::ostream*)
-//     void DescribeTo(std::ostream*);
-//     void DescribeNegationTo(std::ostream*);
+//     void DescribeTo(std::ostream*) const;
+//     void DescribeNegationTo(std::ostream*) const;
 //
 //   2. a factory function that creates a Matcher<T> object from a
 //      FooMatcherMatcher.
@@ -106,13 +107,13 @@ class MatchResultListener {
   MatchResultListener& operator=(const MatchResultListener&) = delete;
 };
 
-inline MatchResultListener::~MatchResultListener() {}
+inline MatchResultListener::~MatchResultListener() = default;
 
 // An instance of a subclass of this knows how to describe itself as a
 // matcher.
 class GTEST_API_ MatcherDescriberInterface {
  public:
-  virtual ~MatcherDescriberInterface() {}
+  virtual ~MatcherDescriberInterface() = default;
 
   // Describes this matcher to an ostream.  The function should print
   // a verb phrase that describes the property a value matching this
@@ -178,43 +179,6 @@ class MatcherInterface : public MatcherDescriberInterface {
 
 namespace internal {
 
-struct AnyEq {
-  template <typename A, typename B>
-  bool operator()(const A& a, const B& b) const {
-    return a == b;
-  }
-};
-struct AnyNe {
-  template <typename A, typename B>
-  bool operator()(const A& a, const B& b) const {
-    return a != b;
-  }
-};
-struct AnyLt {
-  template <typename A, typename B>
-  bool operator()(const A& a, const B& b) const {
-    return a < b;
-  }
-};
-struct AnyGt {
-  template <typename A, typename B>
-  bool operator()(const A& a, const B& b) const {
-    return a > b;
-  }
-};
-struct AnyLe {
-  template <typename A, typename B>
-  bool operator()(const A& a, const B& b) const {
-    return a <= b;
-  }
-};
-struct AnyGe {
-  template <typename A, typename B>
-  bool operator()(const A& a, const B& b) const {
-    return a >= b;
-  }
-};
-
 // A match result listener that ignores the explanation.
 class DummyMatchResultListener : public MatchResultListener {
  public:
@@ -332,12 +296,12 @@ class MatcherBase : private MatcherDescriberInterface {
     return *this;
   }
 
-  MatcherBase(MatcherBase&& other)
+  MatcherBase(MatcherBase&& other) noexcept
       : vtable_(other.vtable_), buffer_(other.buffer_) {
     other.vtable_ = nullptr;
   }
 
-  MatcherBase& operator=(MatcherBase&& other) {
+  MatcherBase& operator=(MatcherBase&& other) noexcept {
     if (this == &other) return *this;
     Destroy();
     vtable_ = other.vtable_;
@@ -530,7 +494,7 @@ template <>
 class GTEST_API_ Matcher<const std::string&>
     : public internal::MatcherBase<const std::string&> {
  public:
-  Matcher() {}
+  Matcher() = default;
 
   explicit Matcher(const MatcherInterface<const std::string&>* impl)
       : internal::MatcherBase<const std::string&>(impl) {}
@@ -552,7 +516,7 @@ template <>
 class GTEST_API_ Matcher<std::string>
     : public internal::MatcherBase<std::string> {
  public:
-  Matcher() {}
+  Matcher() = default;
 
   explicit Matcher(const MatcherInterface<const std::string&>* impl)
       : internal::MatcherBase<std::string>(impl) {}
@@ -580,7 +544,7 @@ template <>
 class GTEST_API_ Matcher<const internal::StringView&>
     : public internal::MatcherBase<const internal::StringView&> {
  public:
-  Matcher() {}
+  Matcher() = default;
 
   explicit Matcher(const MatcherInterface<const internal::StringView&>* impl)
       : internal::MatcherBase<const internal::StringView&>(impl) {}
@@ -606,7 +570,7 @@ template <>
 class GTEST_API_ Matcher<internal::StringView>
     : public internal::MatcherBase<internal::StringView> {
  public:
-  Matcher() {}
+  Matcher() = default;
 
   explicit Matcher(const MatcherInterface<const internal::StringView&>* impl)
       : internal::MatcherBase<internal::StringView>(impl) {}
@@ -758,54 +722,86 @@ class ComparisonBase {
 };
 
 template <typename Rhs>
-class EqMatcher : public ComparisonBase<EqMatcher<Rhs>, Rhs, AnyEq> {
+class EqMatcher : public ComparisonBase<EqMatcher<Rhs>, Rhs, std::equal_to<>> {
  public:
   explicit EqMatcher(const Rhs& rhs)
-      : ComparisonBase<EqMatcher<Rhs>, Rhs, AnyEq>(rhs) {}
+      : ComparisonBase<EqMatcher<Rhs>, Rhs, std::equal_to<>>(rhs) {}
   static const char* Desc() { return "is equal to"; }
   static const char* NegatedDesc() { return "isn't equal to"; }
 };
 template <typename Rhs>
-class NeMatcher : public ComparisonBase<NeMatcher<Rhs>, Rhs, AnyNe> {
+class NeMatcher
+    : public ComparisonBase<NeMatcher<Rhs>, Rhs, std::not_equal_to<>> {
  public:
   explicit NeMatcher(const Rhs& rhs)
-      : ComparisonBase<NeMatcher<Rhs>, Rhs, AnyNe>(rhs) {}
+      : ComparisonBase<NeMatcher<Rhs>, Rhs, std::not_equal_to<>>(rhs) {}
   static const char* Desc() { return "isn't equal to"; }
   static const char* NegatedDesc() { return "is equal to"; }
 };
 template <typename Rhs>
-class LtMatcher : public ComparisonBase<LtMatcher<Rhs>, Rhs, AnyLt> {
+class LtMatcher : public ComparisonBase<LtMatcher<Rhs>, Rhs, std::less<>> {
  public:
   explicit LtMatcher(const Rhs& rhs)
-      : ComparisonBase<LtMatcher<Rhs>, Rhs, AnyLt>(rhs) {}
+      : ComparisonBase<LtMatcher<Rhs>, Rhs, std::less<>>(rhs) {}
   static const char* Desc() { return "is <"; }
   static const char* NegatedDesc() { return "isn't <"; }
 };
 template <typename Rhs>
-class GtMatcher : public ComparisonBase<GtMatcher<Rhs>, Rhs, AnyGt> {
+class GtMatcher : public ComparisonBase<GtMatcher<Rhs>, Rhs, std::greater<>> {
  public:
   explicit GtMatcher(const Rhs& rhs)
-      : ComparisonBase<GtMatcher<Rhs>, Rhs, AnyGt>(rhs) {}
+      : ComparisonBase<GtMatcher<Rhs>, Rhs, std::greater<>>(rhs) {}
   static const char* Desc() { return "is >"; }
   static const char* NegatedDesc() { return "isn't >"; }
 };
 template <typename Rhs>
-class LeMatcher : public ComparisonBase<LeMatcher<Rhs>, Rhs, AnyLe> {
+class LeMatcher
+    : public ComparisonBase<LeMatcher<Rhs>, Rhs, std::less_equal<>> {
  public:
   explicit LeMatcher(const Rhs& rhs)
-      : ComparisonBase<LeMatcher<Rhs>, Rhs, AnyLe>(rhs) {}
+      : ComparisonBase<LeMatcher<Rhs>, Rhs, std::less_equal<>>(rhs) {}
   static const char* Desc() { return "is <="; }
   static const char* NegatedDesc() { return "isn't <="; }
 };
 template <typename Rhs>
-class GeMatcher : public ComparisonBase<GeMatcher<Rhs>, Rhs, AnyGe> {
+class GeMatcher
+    : public ComparisonBase<GeMatcher<Rhs>, Rhs, std::greater_equal<>> {
  public:
   explicit GeMatcher(const Rhs& rhs)
-      : ComparisonBase<GeMatcher<Rhs>, Rhs, AnyGe>(rhs) {}
+      : ComparisonBase<GeMatcher<Rhs>, Rhs, std::greater_equal<>>(rhs) {}
   static const char* Desc() { return "is >="; }
   static const char* NegatedDesc() { return "isn't >="; }
 };
 
+// Same as `EqMatcher<Rhs>`, except that the `rhs` is stored as `StoredRhs` and
+// must be implicitly convertible to `Rhs`.
+template <typename Rhs, typename StoredRhs>
+class ImplicitCastEqMatcher {
+ public:
+  explicit ImplicitCastEqMatcher(const StoredRhs& rhs) : stored_rhs_(rhs) {}
+
+  using is_gtest_matcher = void;
+
+  template <typename Lhs>
+  bool MatchAndExplain(const Lhs& lhs, std::ostream*) const {
+    return lhs == rhs();
+  }
+
+  void DescribeTo(std::ostream* os) const {
+    *os << "is equal to ";
+    UniversalPrint(rhs(), os);
+  }
+  void DescribeNegationTo(std::ostream* os) const {
+    *os << "isn't equal to ";
+    UniversalPrint(rhs(), os);
+  }
+
+ private:
+  Rhs rhs() const { return ImplicitCast_<Rhs>(stored_rhs_); }
+
+  StoredRhs stored_rhs_;
+};
+
 template <typename T, typename = typename std::enable_if<
                           std::is_constructible<std::string, T>::value>::type>
 using StringLike = T;
@@ -842,7 +838,7 @@ class MatchesRegexMatcher {
   template <class MatcheeStringType>
   bool MatchAndExplain(const MatcheeStringType& s,
                        MatchResultListener* /* listener */) const {
-    const std::string& s2(s);
+    const std::string s2(s);
     return full_match_ ? RE::FullMatch(s2, *regex_)
                        : RE::PartialMatch(s2, *regex_);
   }

googletest/include/gtest/gtest-message.h

@@ -50,10 +50,19 @@
 
 #include <limits>
 #include <memory>
+#include <ostream>
 #include <sstream>
+#include <string>
 
 #include "gtest/internal/gtest-port.h"
 
+#ifdef GTEST_HAS_ABSL
+#include <type_traits>
+
+#include "absl/strings/has_absl_stringify.h"
+#include "absl/strings/str_cat.h"
+#endif  // GTEST_HAS_ABSL
+
 GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
 /* class A needs to have dll-interface to be used by clients of class B */)
 
@@ -109,8 +118,17 @@ class GTEST_API_ Message {
     *ss_ << str;
   }
 
-  // Streams a non-pointer value to this object.
-  template <typename T>
+  // Streams a non-pointer value to this object. If building a version of
+  // GoogleTest with ABSL, this overload is only enabled if the value does not
+  // have an AbslStringify definition.
+  template <
+      typename T
+#ifdef GTEST_HAS_ABSL
+      ,
+      typename std::enable_if<!absl::HasAbslStringify<T>::value,  // NOLINT
+                              int>::type = 0
+#endif  // GTEST_HAS_ABSL
+      >
   inline Message& operator<<(const T& val) {
         // Some libraries overload << for STL containers.  These
     // overloads are defined in the global namespace instead of ::std.
@@ -131,6 +149,21 @@ class GTEST_API_ Message {
     return *this;
   }
 
+#ifdef GTEST_HAS_ABSL
+  // Streams a non-pointer value with an AbslStringify definition to this
+  // object.
+  template <typename T,
+            typename std::enable_if<absl::HasAbslStringify<T>::value,  // NOLINT
+                                    int>::type = 0>
+  inline Message& operator<<(const T& val) {
+    // ::operator<< is needed here for a similar reason as with the non-Abseil
+    // version above
+    using ::operator<<;
+    *ss_ << absl::StrCat(val);
+    return *this;
+  }
+#endif  // GTEST_HAS_ABSL
+
   // Streams a pointer value to this object.
   //
   // This function is an overload of the previous one.  When you

googletest/include/gtest/gtest-param-test.h

@@ -174,11 +174,12 @@ TEST_P(DerivedTest, DoesBlah) {
 
 #endif  // 0
 
+#include <functional>
 #include <iterator>
 #include <utility>
 
 #include "gtest/internal/gtest-internal.h"
-#include "gtest/internal/gtest-param-util.h"
+#include "gtest/internal/gtest-param-util.h"  // IWYU pragma: export
 #include "gtest/internal/gtest-port.h"
 
 namespace testing {
@@ -407,9 +408,106 @@ internal::CartesianProductHolder<Generator...> Combine(const Generator&... g) {
   return internal::CartesianProductHolder<Generator...>(g...);
 }
 
+// ConvertGenerator() wraps a parameter generator in order to cast each produced
+// value through a known type before supplying it to the test suite
+//
+// Synopsis:
+// ConvertGenerator<T>(gen)
+//   - returns a generator producing the same elements as generated by gen, but
+//     each T-typed element is static_cast to a type deduced from the interface
+//     that accepts this generator, and then returned
+//
+// It is useful when using the Combine() function to get the generated
+// parameters in a custom type instead of std::tuple
+//
+// Example:
+//
+// This will instantiate tests in test suite AnimalTest each one with
+// the parameter values tuple("cat", BLACK), tuple("cat", WHITE),
+// tuple("dog", BLACK), and tuple("dog", WHITE):
+//
+// enum Color { BLACK, GRAY, WHITE };
+// struct ParamType {
+//   using TupleT = std::tuple<const char*, Color>;
+//   std::string animal;
+//   Color color;
+//   ParamType(TupleT t) : animal(std::get<0>(t)), color(std::get<1>(t)) {}
+// };
+// class AnimalTest
+//     : public testing::TestWithParam<ParamType> {...};
+//
+// TEST_P(AnimalTest, AnimalLooksNice) {...}
+//
+// INSTANTIATE_TEST_SUITE_P(AnimalVariations, AnimalTest,
+//                          ConvertGenerator<ParamType::TupleT>(
+//                              Combine(Values("cat", "dog"),
+//                                      Values(BLACK, WHITE))));
+//
+template <typename RequestedT>
+internal::ParamConverterGenerator<RequestedT> ConvertGenerator(
+    internal::ParamGenerator<RequestedT> gen) {
+  return internal::ParamConverterGenerator<RequestedT>(std::move(gen));
+}
+
+// As above, but takes a callable as a second argument. The callable converts
+// the generated parameter to the test fixture's parameter type. This allows you
+// to use a parameter type that does not have a converting constructor from the
+// generated type.
+//
+// Example:
+//
+// This will instantiate tests in test suite AnimalTest each one with
+// the parameter values tuple("cat", BLACK), tuple("cat", WHITE),
+// tuple("dog", BLACK), and tuple("dog", WHITE):
+//
+// enum Color { BLACK, GRAY, WHITE };
+// struct ParamType {
+//   std::string animal;
+//   Color color;
+// };
+// class AnimalTest
+//     : public testing::TestWithParam<ParamType> {...};
+//
+// TEST_P(AnimalTest, AnimalLooksNice) {...}
+//
+// INSTANTIATE_TEST_SUITE_P(
+//     AnimalVariations, AnimalTest,
+//     ConvertGenerator(Combine(Values("cat", "dog"), Values(BLACK, WHITE)),
+//                      [](std::tuple<std::string, Color> t) {
+//                        return ParamType{.animal = std::get<0>(t),
+//                                         .color = std::get<1>(t)};
+//                      }));
+//
+template <typename T, int&... ExplicitArgumentBarrier, typename Gen,
+          typename Func,
+          typename StdFunction = decltype(std::function(std::declval<Func>()))>
+internal::ParamConverterGenerator<T, StdFunction> ConvertGenerator(Gen&& gen,
+                                                                   Func&& f) {
+  return internal::ParamConverterGenerator<T, StdFunction>(
+      std::forward<Gen>(gen), std::forward<Func>(f));
+}
+
+// As above, but infers the T from the supplied std::function instead of
+// having the caller specify it.
+template <int&... ExplicitArgumentBarrier, typename Gen, typename Func,
+          typename StdFunction = decltype(std::function(std::declval<Func>()))>
+auto ConvertGenerator(Gen&& gen, Func&& f) {
+  constexpr bool is_single_arg_std_function =
+      internal::IsSingleArgStdFunction<StdFunction>::value;
+  if constexpr (is_single_arg_std_function) {
+    return ConvertGenerator<
+        typename internal::FuncSingleParamType<StdFunction>::type>(
+        std::forward<Gen>(gen), std::forward<Func>(f));
+  } else {
+    static_assert(is_single_arg_std_function,
+                  "The call signature must contain a single argument.");
+  }
+}
+
 #define TEST_P(test_suite_name, test_name)                                     \
   class GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)                     \
-      : public test_suite_name {                                               \
+      : public test_suite_name,                                                \
+        private ::testing::internal::GTestNonCopyable {                        \
    public:                                                                     \
     GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)() {}                    \
     void TestBody() override;                                                  \
@@ -428,12 +526,7 @@ internal::CartesianProductHolder<Generator...> Combine(const Generator&... g) {
               ::testing::internal::CodeLocation(__FILE__, __LINE__));          \
       return 0;                                                                \
     }                                                                          \
-    static int gtest_registering_dummy_ GTEST_ATTRIBUTE_UNUSED_;               \
-    GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)                         \
-    (const GTEST_TEST_CLASS_NAME_(test_suite_name, test_name) &) = delete;     \
-    GTEST_TEST_CLASS_NAME_(test_suite_name, test_name) & operator=(            \
-        const GTEST_TEST_CLASS_NAME_(test_suite_name,                          \
-                                     test_name) &) = delete; /* NOLINT */      \
+    [[maybe_unused]] static int gtest_registering_dummy_;                      \
   };                                                                           \
   int GTEST_TEST_CLASS_NAME_(test_suite_name,                                  \
                              test_name)::gtest_registering_dummy_ =            \
@@ -457,39 +550,38 @@ internal::CartesianProductHolder<Generator...> Combine(const Generator&... g) {
 #define GTEST_GET_FIRST_(first, ...) first
 #define GTEST_GET_SECOND_(first, second, ...) second
 
-#define INSTANTIATE_TEST_SUITE_P(prefix, test_suite_name, ...)               \
-  static ::testing::internal::ParamGenerator<test_suite_name::ParamType>     \
-      gtest_##prefix##test_suite_name##_EvalGenerator_() {                   \
-    return GTEST_EXPAND_(GTEST_GET_FIRST_(__VA_ARGS__, DUMMY_PARAM_));       \
-  }                                                                          \
-  static ::std::string gtest_##prefix##test_suite_name##_EvalGenerateName_(  \
-      const ::testing::TestParamInfo<test_suite_name::ParamType>& info) {    \
-    if (::testing::internal::AlwaysFalse()) {                                \
-      ::testing::internal::TestNotEmpty(GTEST_EXPAND_(GTEST_GET_SECOND_(     \
-          __VA_ARGS__,                                                       \
-          ::testing::internal::DefaultParamName<test_suite_name::ParamType>, \
-          DUMMY_PARAM_)));                                                   \
-      auto t = std::make_tuple(__VA_ARGS__);                                 \
-      static_assert(std::tuple_size<decltype(t)>::value <= 2,                \
-                    "Too Many Args!");                                       \
-    }                                                                        \
-    return ((GTEST_EXPAND_(GTEST_GET_SECOND_(                                \
-        __VA_ARGS__,                                                         \
-        ::testing::internal::DefaultParamName<test_suite_name::ParamType>,   \
-        DUMMY_PARAM_))))(info);                                              \
-  }                                                                          \
-  static int gtest_##prefix##test_suite_name##_dummy_                        \
-      GTEST_ATTRIBUTE_UNUSED_ =                                              \
-          ::testing::UnitTest::GetInstance()                                 \
-              ->parameterized_test_registry()                                \
-              .GetTestSuitePatternHolder<test_suite_name>(                   \
-                  GTEST_STRINGIFY_(test_suite_name),                         \
-                  ::testing::internal::CodeLocation(__FILE__, __LINE__))     \
-              ->AddTestSuiteInstantiation(                                   \
-                  GTEST_STRINGIFY_(prefix),                                  \
-                  &gtest_##prefix##test_suite_name##_EvalGenerator_,         \
-                  &gtest_##prefix##test_suite_name##_EvalGenerateName_,      \
-                  __FILE__, __LINE__)
+#define INSTANTIATE_TEST_SUITE_P(prefix, test_suite_name, ...)                \
+  static ::testing::internal::ParamGenerator<test_suite_name::ParamType>      \
+      gtest_##prefix##test_suite_name##_EvalGenerator_() {                    \
+    return GTEST_EXPAND_(GTEST_GET_FIRST_(__VA_ARGS__, DUMMY_PARAM_));        \
+  }                                                                           \
+  static ::std::string gtest_##prefix##test_suite_name##_EvalGenerateName_(   \
+      const ::testing::TestParamInfo<test_suite_name::ParamType>& info) {     \
+    if (::testing::internal::AlwaysFalse()) {                                 \
+      ::testing::internal::TestNotEmpty(GTEST_EXPAND_(GTEST_GET_SECOND_(      \
+          __VA_ARGS__,                                                        \
+          ::testing::internal::DefaultParamName<test_suite_name::ParamType>,  \
+          DUMMY_PARAM_)));                                                    \
+      auto t = std::make_tuple(__VA_ARGS__);                                  \
+      static_assert(std::tuple_size<decltype(t)>::value <= 2,                 \
+                    "Too Many Args!");                                        \
+    }                                                                         \
+    return ((GTEST_EXPAND_(GTEST_GET_SECOND_(                                 \
+        __VA_ARGS__,                                                          \
+        ::testing::internal::DefaultParamName<test_suite_name::ParamType>,    \
+        DUMMY_PARAM_))))(info);                                               \
+  }                                                                           \
+  [[maybe_unused]] static int gtest_##prefix##test_suite_name##_dummy_ =      \
+      ::testing::UnitTest::GetInstance()                                      \
+          ->parameterized_test_registry()                                     \
+          .GetTestSuitePatternHolder<test_suite_name>(                        \
+              GTEST_STRINGIFY_(test_suite_name),                              \
+              ::testing::internal::CodeLocation(__FILE__, __LINE__))          \
+          ->AddTestSuiteInstantiation(                                        \
+              GTEST_STRINGIFY_(prefix),                                       \
+              &gtest_##prefix##test_suite_name##_EvalGenerator_,              \
+              &gtest_##prefix##test_suite_name##_EvalGenerateName_, __FILE__, \
+              __LINE__)
 
 // Allow Marking a Parameterized test class as not needing to be instantiated.
 #define GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(T)                  \

googletest/include/gtest/gtest-printers.h

@@ -43,6 +43,9 @@
 //   1. foo::PrintTo(const T&, ostream*)
 //   2. operator<<(ostream&, const T&) defined in either foo or the
 //      global namespace.
+// * Prefer AbslStringify(..) to operator<<(..), per https://abseil.io/tips/215.
+// * Define foo::PrintTo(..) if the type already has AbslStringify(..), but an
+//   alternative presentation in test results is of interest.
 //
 // However if T is an STL-style container then it is printed element-wise
 // unless foo::PrintTo(const T&, ostream*) is defined. Note that
@@ -101,19 +104,36 @@
 #ifndef GOOGLETEST_INCLUDE_GTEST_GTEST_PRINTERS_H_
 #define GOOGLETEST_INCLUDE_GTEST_GTEST_PRINTERS_H_
 
+#include <any>
 #include <functional>
 #include <memory>
+#include <optional>
 #include <ostream>  // NOLINT
 #include <sstream>
 #include <string>
+#include <string_view>
 #include <tuple>
 #include <type_traits>
+#include <typeinfo>
 #include <utility>
+#include <variant>
 #include <vector>
 
+#ifdef GTEST_HAS_ABSL
+#include "absl/strings/has_absl_stringify.h"
+#include "absl/strings/str_cat.h"
+#endif  // GTEST_HAS_ABSL
 #include "gtest/internal/gtest-internal.h"
 #include "gtest/internal/gtest-port.h"
 
+#if GTEST_INTERNAL_HAS_STD_SPAN
+#include <span>  // NOLINT
+#endif           // GTEST_INTERNAL_HAS_STD_SPAN
+
+#if GTEST_INTERNAL_HAS_COMPARE_LIB
+#include <compare>  // NOLINT
+#endif              // GTEST_INTERNAL_HAS_COMPARE_LIB
+
 namespace testing {
 
 // Definitions in the internal* namespaces are subject to change without notice.
@@ -123,13 +143,32 @@ namespace internal {
 template <typename T>
 void UniversalPrint(const T& value, ::std::ostream* os);
 
+template <typename T>
+struct IsStdSpan {
+  static constexpr bool value = false;
+};
+
+#if GTEST_INTERNAL_HAS_STD_SPAN
+template <typename E>
+struct IsStdSpan<std::span<E>> {
+  static constexpr bool value = true;
+};
+#endif  // GTEST_INTERNAL_HAS_STD_SPAN
+
 // Used to print an STL-style container when the user doesn't define
 // a PrintTo() for it.
+//
+// NOTE: Since std::span does not have const_iterator until C++23, it would
+// fail IsContainerTest before C++23. However, IsContainerTest only uses
+// the presence of const_iterator to avoid treating iterators as containers
+// because of iterator::iterator. Which means std::span satisfies the *intended*
+// condition of IsContainerTest.
 struct ContainerPrinter {
   template <typename T,
             typename = typename std::enable_if<
-                (sizeof(IsContainerTest<T>(0)) == sizeof(IsContainer)) &&
-                !IsRecursiveContainer<T>::value>::type>
+                ((sizeof(IsContainerTest<T>(0)) == sizeof(IsContainer)) &&
+                 !IsRecursiveContainer<T>::value) ||
+                IsStdSpan<T>::value>::type>
   static void PrintValue(const T& container, std::ostream* os) {
     const size_t kMaxCount = 32;  // The maximum number of elements to print.
     *os << '{';
@@ -205,12 +244,13 @@ struct StreamPrinter {
             // Don't accept member pointers here. We'd print them via implicit
             // conversion to bool, which isn't useful.
             typename = typename std::enable_if<
-                !std::is_member_pointer<T>::value>::type,
-            // Only accept types for which we can find a streaming operator via
-            // ADL (possibly involving implicit conversions).
-            typename = decltype(std::declval<std::ostream&>()
-                                << std::declval<const T&>())>
-  static void PrintValue(const T& value, ::std::ostream* os) {
+                !std::is_member_pointer<T>::value>::type>
+  // Only accept types for which we can find a streaming operator via
+  // ADL (possibly involving implicit conversions).
+  // (Use SFINAE via return type, because it seems GCC < 12 doesn't handle name
+  // lookup properly when we do it in the template parameter list.)
+  static auto PrintValue(const T& value, ::std::ostream* os)
+      -> decltype((void)(*os << value)) {
     // Call streaming operator found by ADL, possibly with implicit conversions
     // of the arguments.
     *os << value;
@@ -258,6 +298,17 @@ struct ConvertibleToStringViewPrinter {
 #endif
 };
 
+#ifdef GTEST_HAS_ABSL
+struct ConvertibleToAbslStringifyPrinter {
+  template <typename T,
+            typename = typename std::enable_if<
+                absl::HasAbslStringify<T>::value>::type>  // NOLINT
+  static void PrintValue(const T& value, ::std::ostream* os) {
+    *os << absl::StrCat(value);
+  }
+};
+#endif  // GTEST_HAS_ABSL
+
 // Prints the given number of bytes in the given object to the given
 // ostream.
 GTEST_API_ void PrintBytesInObjectTo(const unsigned char* obj_bytes,
@@ -296,8 +347,8 @@ struct FindFirstPrinter<
 //  - Print containers (they have begin/end/etc).
 //  - Print function pointers.
 //  - Print object pointers.
-//  - Use the stream operator, if available.
 //  - Print protocol buffers.
+//  - Use the stream operator, if available.
 //  - Print types convertible to BiggestInt.
 //  - Print types convertible to StringView, if available.
 //  - Fallback to printing the raw bytes of the object.
@@ -305,9 +356,13 @@ template <typename T>
 void PrintWithFallback(const T& value, ::std::ostream* os) {
   using Printer = typename FindFirstPrinter<
       T, void, ContainerPrinter, FunctionPointerPrinter, PointerPrinter,
+      ProtobufPrinter,
+#ifdef GTEST_HAS_ABSL
+      ConvertibleToAbslStringifyPrinter,
+#endif  // GTEST_HAS_ABSL
       internal_stream_operator_without_lexical_name_lookup::StreamPrinter,
-      ProtobufPrinter, ConvertibleToIntegerPrinter,
-      ConvertibleToStringViewPrinter, RawBytesPrinter, FallbackPrinter>::type;
+      ConvertibleToIntegerPrinter, ConvertibleToStringViewPrinter,
+      RawBytesPrinter, FallbackPrinter>::type;
   Printer::PrintValue(value, os);
 }
 
@@ -384,7 +439,7 @@ GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(const char32_t);
 
 GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(char, ::std::string);
 GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const char, ::std::string);
-#ifdef __cpp_char8_t
+#ifdef __cpp_lib_char8_t
 GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(char8_t, ::std::u8string);
 GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const char8_t, ::std::u8string);
 #endif
@@ -470,11 +525,15 @@ GTEST_API_ void PrintTo(wchar_t wc, ::std::ostream* os);
 
 GTEST_API_ void PrintTo(char32_t c, ::std::ostream* os);
 inline void PrintTo(char16_t c, ::std::ostream* os) {
-  PrintTo(ImplicitCast_<char32_t>(c), os);
+  // TODO(b/418738869): Incorrect for values not representing valid codepoints.
+  // Also see https://github.com/google/googletest/issues/4762.
+  PrintTo(static_cast<char32_t>(c), os);
 }
-#ifdef __cpp_char8_t
+#ifdef __cpp_lib_char8_t
 inline void PrintTo(char8_t c, ::std::ostream* os) {
-  PrintTo(ImplicitCast_<char32_t>(c), os);
+  // TODO(b/418738869): Incorrect for values not representing valid codepoints.
+  // Also see https://github.com/google/googletest/issues/4762.
+  PrintTo(static_cast<char32_t>(c), os);
 }
 #endif
 
@@ -484,6 +543,101 @@ GTEST_API_ void PrintTo(__uint128_t v, ::std::ostream* os);
 GTEST_API_ void PrintTo(__int128_t v, ::std::ostream* os);
 #endif  // __SIZEOF_INT128__
 
+// The default resolution used to print floating-point values uses only
+// 6 digits, which can be confusing if a test compares two values whose
+// difference lies in the 7th digit.  So we'd like to print out numbers
+// in full precision.
+// However if the value is something simple like 1.1, full will print a
+// long string like 1.100000001 due to floating-point numbers not using
+// a base of 10.  This routiune returns an appropriate resolution for a
+// given floating-point number, that is, 6 if it will be accurate, or a
+// max_digits10 value (full precision) if it won't,  for values between
+// 0.0001 and one million.
+// It does this by computing what those digits would be (by multiplying
+// by an appropriate power of 10), then dividing by that power again to
+// see if gets the original value back.
+// A similar algorithm applies for values larger than one million; note
+// that for those values, we must divide to get a six-digit number, and
+// then multiply to possibly get the original value again.
+template <typename FloatType>
+int AppropriateResolution(FloatType val) {
+  int full = std::numeric_limits<FloatType>::max_digits10;
+  if (val < 0) val = -val;
+
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wfloat-equal"
+#endif
+  if (val < 1000000) {
+    FloatType mulfor6 = 1e10;
+    // Without these static casts, the template instantiation for float would
+    // fail to compile when -Wdouble-promotion is enabled, as the arithmetic and
+    // comparison logic would promote floats to doubles.
+    if (val >= static_cast<FloatType>(100000.0)) {  // 100,000 to 999,999
+      mulfor6 = 1.0;
+    } else if (val >= static_cast<FloatType>(10000.0)) {
+      mulfor6 = 1e1;
+    } else if (val >= static_cast<FloatType>(1000.0)) {
+      mulfor6 = 1e2;
+    } else if (val >= static_cast<FloatType>(100.0)) {
+      mulfor6 = 1e3;
+    } else if (val >= static_cast<FloatType>(10.0)) {
+      mulfor6 = 1e4;
+    } else if (val >= static_cast<FloatType>(1.0)) {
+      mulfor6 = 1e5;
+    } else if (val >= static_cast<FloatType>(0.1)) {
+      mulfor6 = 1e6;
+    } else if (val >= static_cast<FloatType>(0.01)) {
+      mulfor6 = 1e7;
+    } else if (val >= static_cast<FloatType>(0.001)) {
+      mulfor6 = 1e8;
+    } else if (val >= static_cast<FloatType>(0.0001)) {
+      mulfor6 = 1e9;
+    }
+    if (static_cast<FloatType>(static_cast<int32_t>(
+            val * mulfor6 + (static_cast<FloatType>(0.5)))) /
+            mulfor6 ==
+        val)
+      return 6;
+  } else if (val < static_cast<FloatType>(1e10)) {
+    FloatType divfor6 = static_cast<FloatType>(1.0);
+    if (val >= static_cast<FloatType>(1e9)) {  // 1,000,000,000 to 9,999,999,999
+      divfor6 = 10000;
+    } else if (val >=
+               static_cast<FloatType>(1e8)) {  // 100,000,000 to 999,999,999
+      divfor6 = 1000;
+    } else if (val >=
+               static_cast<FloatType>(1e7)) {  // 10,000,000 to 99,999,999
+      divfor6 = 100;
+    } else if (val >= static_cast<FloatType>(1e6)) {  // 1,000,000 to 9,999,999
+      divfor6 = 10;
+    }
+    if (static_cast<FloatType>(static_cast<int32_t>(
+            val / divfor6 + (static_cast<FloatType>(0.5)))) *
+            divfor6 ==
+        val)
+      return 6;
+  }
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+  return full;
+}
+
+inline void PrintTo(float f, ::std::ostream* os) {
+  auto old_precision = os->precision();
+  os->precision(AppropriateResolution(f));
+  *os << f;
+  os->precision(old_precision);
+}
+
+inline void PrintTo(double d, ::std::ostream* os) {
+  auto old_precision = os->precision();
+  os->precision(AppropriateResolution(d));
+  *os << d;
+  os->precision(old_precision);
+}
+
 // Overloads for C strings.
 GTEST_API_ void PrintTo(const char* s, ::std::ostream* os);
 inline void PrintTo(char* s, ::std::ostream* os) {
@@ -504,7 +658,7 @@ inline void PrintTo(const unsigned char* s, ::std::ostream* os) {
 inline void PrintTo(unsigned char* s, ::std::ostream* os) {
   PrintTo(ImplicitCast_<const void*>(s), os);
 }
-#ifdef __cpp_char8_t
+#ifdef __cpp_lib_char8_t
 // Overloads for u8 strings.
 GTEST_API_ void PrintTo(const char8_t* s, ::std::ostream* os);
 inline void PrintTo(char8_t* s, ::std::ostream* os) {
@@ -549,44 +703,63 @@ void PrintRawArrayTo(const T a[], size_t count, ::std::ostream* os) {
   }
 }
 
-// Overloads for ::std::string.
-GTEST_API_ void PrintStringTo(const ::std::string& s, ::std::ostream* os);
+// Overloads for ::std::string and ::std::string_view
+GTEST_API_ void PrintStringTo(::std::string_view s, ::std::ostream* os);
 inline void PrintTo(const ::std::string& s, ::std::ostream* os) {
   PrintStringTo(s, os);
 }
+inline void PrintTo(::std::string_view s, ::std::ostream* os) {
+  PrintStringTo(s, os);
+}
 
-// Overloads for ::std::u8string
-#ifdef __cpp_char8_t
-GTEST_API_ void PrintU8StringTo(const ::std::u8string& s, ::std::ostream* os);
+// Overloads for ::std::u8string and ::std::u8string_view
+#ifdef __cpp_lib_char8_t
+GTEST_API_ void PrintU8StringTo(::std::u8string_view s, ::std::ostream* os);
 inline void PrintTo(const ::std::u8string& s, ::std::ostream* os) {
   PrintU8StringTo(s, os);
 }
+inline void PrintTo(::std::u8string_view s, ::std::ostream* os) {
+  PrintU8StringTo(s, os);
+}
 #endif
 
-// Overloads for ::std::u16string
-GTEST_API_ void PrintU16StringTo(const ::std::u16string& s, ::std::ostream* os);
+// Overloads for ::std::u16string and ::std::u16string_view
+GTEST_API_ void PrintU16StringTo(::std::u16string_view s, ::std::ostream* os);
 inline void PrintTo(const ::std::u16string& s, ::std::ostream* os) {
   PrintU16StringTo(s, os);
 }
+inline void PrintTo(::std::u16string_view s, ::std::ostream* os) {
+  PrintU16StringTo(s, os);
+}
 
-// Overloads for ::std::u32string
-GTEST_API_ void PrintU32StringTo(const ::std::u32string& s, ::std::ostream* os);
+// Overloads for ::std::u32string and ::std::u32string_view
+GTEST_API_ void PrintU32StringTo(::std::u32string_view s, ::std::ostream* os);
 inline void PrintTo(const ::std::u32string& s, ::std::ostream* os) {
   PrintU32StringTo(s, os);
 }
+inline void PrintTo(::std::u32string_view s, ::std::ostream* os) {
+  PrintU32StringTo(s, os);
+}
 
-// Overloads for ::std::wstring.
+// Overloads for ::std::wstring and ::std::wstring_view
 #if GTEST_HAS_STD_WSTRING
-GTEST_API_ void PrintWideStringTo(const ::std::wstring& s, ::std::ostream* os);
+GTEST_API_ void PrintWideStringTo(::std::wstring_view s, ::std::ostream* os);
 inline void PrintTo(const ::std::wstring& s, ::std::ostream* os) {
   PrintWideStringTo(s, os);
 }
+inline void PrintTo(::std::wstring_view s, ::std::ostream* os) {
+  PrintWideStringTo(s, os);
+}
 #endif  // GTEST_HAS_STD_WSTRING
 
 #if GTEST_INTERNAL_HAS_STRING_VIEW
-// Overload for internal::StringView.
+// Overload for internal::StringView. Needed for build configurations where
+// internal::StringView is an alias for absl::string_view, but absl::string_view
+// is a distinct type from std::string_view.
+template <int&... ExplicitArgumentBarrier, typename T = internal::StringView,
+          std::enable_if_t<!std::is_same_v<T, ::std::string_view>, int> = 0>
 inline void PrintTo(internal::StringView sp, ::std::ostream* os) {
-  PrintTo(::std::string(sp), os);
+  PrintStringTo(sp, os);
 }
 #endif  // GTEST_INTERNAL_HAS_STRING_VIEW
 
@@ -640,6 +813,41 @@ void PrintTo(const std::shared_ptr<T>& ptr, std::ostream* os) {
   (PrintSmartPointer<T>)(ptr, os, 0);
 }
 
+#if GTEST_INTERNAL_HAS_COMPARE_LIB
+template <typename T>
+void PrintOrderingHelper(T ordering, std::ostream* os) {
+  if (ordering == T::less) {
+    *os << "(less)";
+  } else if (ordering == T::greater) {
+    *os << "(greater)";
+  } else if (ordering == T::equivalent) {
+    *os << "(equivalent)";
+  } else {
+    *os << "(unknown ordering)";
+  }
+}
+
+inline void PrintTo(std::strong_ordering ordering, std::ostream* os) {
+  if (ordering == std::strong_ordering::equal) {
+    *os << "(equal)";
+  } else {
+    PrintOrderingHelper(ordering, os);
+  }
+}
+
+inline void PrintTo(std::partial_ordering ordering, std::ostream* os) {
+  if (ordering == std::partial_ordering::unordered) {
+    *os << "(unordered)";
+  } else {
+    PrintOrderingHelper(ordering, os);
+  }
+}
+
+inline void PrintTo(std::weak_ordering ordering, std::ostream* os) {
+  PrintOrderingHelper(ordering, os);
+}
+#endif
+
 // Helper function for printing a tuple.  T must be instantiated with
 // a tuple type.
 template <typename T>
@@ -709,14 +917,11 @@ class UniversalPrinter {
 template <typename T>
 class UniversalPrinter<const T> : public UniversalPrinter<T> {};
 
-#if GTEST_INTERNAL_HAS_ANY
-
-// Printer for std::any / absl::any
-
+// Printer for std::any
 template <>
-class UniversalPrinter<Any> {
+class UniversalPrinter<std::any> {
  public:
-  static void Print(const Any& value, ::std::ostream* os) {
+  static void Print(const std::any& value, ::std::ostream* os) {
     if (value.has_value()) {
       *os << "value of type " << GetTypeName(value);
     } else {
@@ -725,7 +930,7 @@ class UniversalPrinter<Any> {
   }
 
  private:
-  static std::string GetTypeName(const Any& value) {
+  static std::string GetTypeName(const std::any& value) {
 #if GTEST_HAS_RTTI
     return internal::GetTypeName(value.type());
 #else
@@ -735,16 +940,11 @@ class UniversalPrinter<Any> {
   }
 };
 
-#endif  // GTEST_INTERNAL_HAS_ANY
-
-#if GTEST_INTERNAL_HAS_OPTIONAL
-
-// Printer for std::optional / absl::optional
-
+// Printer for std::optional
 template <typename T>
-class UniversalPrinter<Optional<T>> {
+class UniversalPrinter<std::optional<T>> {
  public:
-  static void Print(const Optional<T>& value, ::std::ostream* os) {
+  static void Print(const std::optional<T>& value, ::std::ostream* os) {
     *os << '(';
     if (!value) {
       *os << "nullopt";
@@ -756,29 +956,18 @@ class UniversalPrinter<Optional<T>> {
 };
 
 template <>
-class UniversalPrinter<decltype(Nullopt())> {
+class UniversalPrinter<std::nullopt_t> {
  public:
-  static void Print(decltype(Nullopt()), ::std::ostream* os) {
-    *os << "(nullopt)";
-  }
+  static void Print(std::nullopt_t, ::std::ostream* os) { *os << "(nullopt)"; }
 };
 
-#endif  // GTEST_INTERNAL_HAS_OPTIONAL
-
-#if GTEST_INTERNAL_HAS_VARIANT
-
-// Printer for std::variant / absl::variant
-
+// Printer for std::variant
 template <typename... T>
-class UniversalPrinter<Variant<T...>> {
+class UniversalPrinter<std::variant<T...>> {
  public:
-  static void Print(const Variant<T...>& value, ::std::ostream* os) {
+  static void Print(const std::variant<T...>& value, ::std::ostream* os) {
     *os << '(';
-#if GTEST_HAS_ABSL
-    absl::visit(Visitor{os, value.index()}, value);
-#else
     std::visit(Visitor{os, value.index()}, value);
-#endif  // GTEST_HAS_ABSL
     *os << ')';
   }
 
@@ -795,8 +984,6 @@ class UniversalPrinter<Variant<T...>> {
   };
 };
 
-#endif  // GTEST_INTERNAL_HAS_VARIANT
-
 // UniversalPrintArray(begin, len, os) prints an array of 'len'
 // elements, starting at address 'begin'.
 template <typename T>
@@ -824,7 +1011,7 @@ void UniversalPrintArray(const T* begin, size_t len, ::std::ostream* os) {
 GTEST_API_ void UniversalPrintArray(const char* begin, size_t len,
                                     ::std::ostream* os);
 
-#ifdef __cpp_char8_t
+#ifdef __cpp_lib_char8_t
 // This overload prints a (const) char8_t array compactly.
 GTEST_API_ void UniversalPrintArray(const char8_t* begin, size_t len,
                                     ::std::ostream* os);
@@ -891,6 +1078,13 @@ class UniversalTersePrinter<T&> {
     UniversalPrint(value, os);
   }
 };
+template <typename T>
+class UniversalTersePrinter<std::reference_wrapper<T>> {
+ public:
+  static void Print(std::reference_wrapper<T> value, ::std::ostream* os) {
+    UniversalTersePrinter<T>::Print(value.get(), os);
+  }
+};
 template <typename T, size_t N>
 class UniversalTersePrinter<T[N]> {
  public:
@@ -913,7 +1107,7 @@ template <>
 class UniversalTersePrinter<char*> : public UniversalTersePrinter<const char*> {
 };
 
-#ifdef __cpp_char8_t
+#ifdef __cpp_lib_char8_t
 template <>
 class UniversalTersePrinter<const char8_t*> {
  public:

googletest/include/gtest/gtest-spi.h

@@ -33,6 +33,8 @@
 #ifndef GOOGLETEST_INCLUDE_GTEST_GTEST_SPI_H_
 #define GOOGLETEST_INCLUDE_GTEST_GTEST_SPI_H_
 
+#include <string>
+
 #include "gtest/gtest.h"
 
 GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \

googletest/include/gtest/gtest-test-part.h

@@ -35,6 +35,8 @@
 #define GOOGLETEST_INCLUDE_GTEST_GTEST_TEST_PART_H_
 
 #include <iosfwd>
+#include <ostream>
+#include <string>
 #include <vector>
 
 #include "gtest/internal/gtest-internal.h"
@@ -131,7 +133,7 @@ std::ostream& operator<<(std::ostream& os, const TestPartResult& result);
 // virtual.
 class GTEST_API_ TestPartResultArray {
  public:
-  TestPartResultArray() {}
+  TestPartResultArray() = default;
 
   // Appends the given TestPartResult to the array.
   void Append(const TestPartResult& result);
@@ -152,7 +154,7 @@ class GTEST_API_ TestPartResultArray {
 // This interface knows how to report a test part result.
 class GTEST_API_ TestPartResultReporterInterface {
  public:
-  virtual ~TestPartResultReporterInterface() {}
+  virtual ~TestPartResultReporterInterface() = default;
 
   virtual void ReportTestPartResult(const TestPartResult& result) = 0;
 };

googletest/include/gtest/gtest-typed-test.h

@@ -48,15 +48,15 @@ template <typename T>
 class FooTest : public testing::Test {
  public:
   ...
-  typedef std::list<T> List;
+  using List = ::std::list<T>;
   static T shared_;
   T value_;
 };
 
 // Next, associate a list of types with the test suite, which will be
-// repeated for each type in the list.  The typedef is necessary for
+// repeated for each type in the list.  The using-declaration is necessary for
 // the macro to parse correctly.
-typedef testing::Types<char, int, unsigned int> MyTypes;
+using MyTypes = ::testing::Types<char, int, unsigned int>;
 TYPED_TEST_SUITE(FooTest, MyTypes);
 
 // If the type list contains only one type, you can write that type
@@ -157,7 +157,7 @@ REGISTER_TYPED_TEST_SUITE_P(FooTest,
 // argument to the INSTANTIATE_* macro is a prefix that will be added
 // to the actual test suite name.  Remember to pick unique prefixes for
 // different instances.
-typedef testing::Types<char, int, unsigned int> MyTypes;
+using MyTypes = ::testing::Types<char, int, unsigned int>;
 INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, MyTypes);
 
 // If the type list contains only one type, you can write that type
@@ -205,8 +205,8 @@ INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, MyTypes);
     typedef gtest_TypeParam_ TypeParam;                                       \
     void TestBody() override;                                                 \
   };                                                                          \
-  static bool gtest_##CaseName##_##TestName##_registered_                     \
-      GTEST_ATTRIBUTE_UNUSED_ = ::testing::internal::TypeParameterizedTest<   \
+  [[maybe_unused]] static bool gtest_##CaseName##_##TestName##_registered_ =  \
+      ::testing::internal::TypeParameterizedTest<                             \
           CaseName,                                                           \
           ::testing::internal::TemplateSel<GTEST_TEST_CLASS_NAME_(CaseName,   \
                                                                   TestName)>, \
@@ -267,31 +267,31 @@ INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, MyTypes);
   TYPED_TEST_SUITE_P
 #endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 
-#define TYPED_TEST_P(SuiteName, TestName)                             \
-  namespace GTEST_SUITE_NAMESPACE_(SuiteName) {                       \
-    template <typename gtest_TypeParam_>                              \
-    class TestName : public SuiteName<gtest_TypeParam_> {             \
-     private:                                                         \
-      typedef SuiteName<gtest_TypeParam_> TestFixture;                \
-      typedef gtest_TypeParam_ TypeParam;                             \
-      void TestBody() override;                                       \
-    };                                                                \
-    static bool gtest_##TestName##_defined_ GTEST_ATTRIBUTE_UNUSED_ = \
-        GTEST_TYPED_TEST_SUITE_P_STATE_(SuiteName).AddTestName(       \
-            __FILE__, __LINE__, GTEST_STRINGIFY_(SuiteName),          \
-            GTEST_STRINGIFY_(TestName));                              \
-  }                                                                   \
-  template <typename gtest_TypeParam_>                                \
-  void GTEST_SUITE_NAMESPACE_(                                        \
+#define TYPED_TEST_P(SuiteName, TestName)                     \
+  namespace GTEST_SUITE_NAMESPACE_(SuiteName) {               \
+  template <typename gtest_TypeParam_>                        \
+  class TestName : public SuiteName<gtest_TypeParam_> {       \
+   private:                                                   \
+    typedef SuiteName<gtest_TypeParam_> TestFixture;          \
+    typedef gtest_TypeParam_ TypeParam;                       \
+    void TestBody() override;                                 \
+  };                                                          \
+  [[maybe_unused]] static bool gtest_##TestName##_defined_ =  \
+      GTEST_TYPED_TEST_SUITE_P_STATE_(SuiteName).AddTestName( \
+          __FILE__, __LINE__, GTEST_STRINGIFY_(SuiteName),    \
+          GTEST_STRINGIFY_(TestName));                        \
+  }                                                           \
+  template <typename gtest_TypeParam_>                        \
+  void GTEST_SUITE_NAMESPACE_(                                \
       SuiteName)::TestName<gtest_TypeParam_>::TestBody()
 
 // Note: this won't work correctly if the trailing arguments are macros.
 #define REGISTER_TYPED_TEST_SUITE_P(SuiteName, ...)                         \
   namespace GTEST_SUITE_NAMESPACE_(SuiteName) {                             \
-    typedef ::testing::internal::Templates<__VA_ARGS__> gtest_AllTests_;    \
+  typedef ::testing::internal::Templates<__VA_ARGS__> gtest_AllTests_;      \
   }                                                                         \
-  static const char* const GTEST_REGISTERED_TEST_NAMES_(                    \
-      SuiteName) GTEST_ATTRIBUTE_UNUSED_ =                                  \
+  [[maybe_unused]] static const char* const GTEST_REGISTERED_TEST_NAMES_(   \
+      SuiteName) =                                                          \
       GTEST_TYPED_TEST_SUITE_P_STATE_(SuiteName).VerifyRegisteredTestNames( \
           GTEST_STRINGIFY_(SuiteName), __FILE__, __LINE__, #__VA_ARGS__)
 
@@ -306,7 +306,7 @@ INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, MyTypes);
 #define INSTANTIATE_TYPED_TEST_SUITE_P(Prefix, SuiteName, Types, ...)     \
   static_assert(sizeof(GTEST_STRINGIFY_(Prefix)) > 1,                     \
                 "test-suit-prefix must not be empty");                    \
-  static bool gtest_##Prefix##_##SuiteName GTEST_ATTRIBUTE_UNUSED_ =      \
+  [[maybe_unused]] static bool gtest_##Prefix##_##SuiteName =             \
       ::testing::internal::TypeParameterizedTestSuite<                    \
           SuiteName, GTEST_SUITE_NAMESPACE_(SuiteName)::gtest_AllTests_,  \
           ::testing::internal::GenerateTypeList<Types>::type>::           \

googletest/include/gtest/gtest.h

@@ -50,22 +50,26 @@
 #define GOOGLETEST_INCLUDE_GTEST_GTEST_H_
 
 #include <cstddef>
+#include <cstdint>
 #include <limits>
 #include <memory>
 #include <ostream>
+#include <set>
+#include <sstream>
+#include <string>
 #include <type_traits>
 #include <vector>
 
-#include "gtest/gtest-assertion-result.h"
-#include "gtest/gtest-death-test.h"
-#include "gtest/gtest-matchers.h"
-#include "gtest/gtest-message.h"
-#include "gtest/gtest-param-test.h"
-#include "gtest/gtest-printers.h"
-#include "gtest/gtest-test-part.h"
-#include "gtest/gtest-typed-test.h"
-#include "gtest/gtest_pred_impl.h"
-#include "gtest/gtest_prod.h"
+#include "gtest/gtest-assertion-result.h"  // IWYU pragma: export
+#include "gtest/gtest-death-test.h"  // IWYU pragma: export
+#include "gtest/gtest-matchers.h"  // IWYU pragma: export
+#include "gtest/gtest-message.h"  // IWYU pragma: export
+#include "gtest/gtest-param-test.h"  // IWYU pragma: export
+#include "gtest/gtest-printers.h"  // IWYU pragma: export
+#include "gtest/gtest-test-part.h"  // IWYU pragma: export
+#include "gtest/gtest-typed-test.h"  // IWYU pragma: export
+#include "gtest/gtest_pred_impl.h"  // IWYU pragma: export
+#include "gtest/gtest_prod.h"  // IWYU pragma: export
 #include "gtest/internal/gtest-internal.h"
 #include "gtest/internal/gtest-string.h"
 
@@ -161,11 +165,7 @@ namespace testing {
 
 // Silence C4100 (unreferenced formal parameter) and 4805
 // unsafe mix of type 'const int' and type 'const bool'
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4805)
-#pragma warning(disable : 4100)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4805 4100)
 
 // The upper limit for valid stack trace depths.
 const int kMaxStackTraceDepth = 100;
@@ -190,6 +190,17 @@ void ReportFailureInUnknownLocation(TestPartResult::Type result_type,
                                     const std::string& message);
 std::set<std::string>* GetIgnoredParameterizedTestSuites();
 
+// A base class that prevents subclasses from being copyable.
+// We do this instead of using '= delete' so as to avoid triggering warnings
+// inside user code regarding any of our declarations.
+class GTestNonCopyable {
+ public:
+  GTestNonCopyable() = default;
+  GTestNonCopyable(const GTestNonCopyable&) = delete;
+  GTestNonCopyable& operator=(const GTestNonCopyable&) = delete;
+  ~GTestNonCopyable() = default;
+};
+
 }  // namespace internal
 
 // The friend relationship of some of these classes is cyclic.
@@ -285,7 +296,13 @@ class GTEST_API_ Test {
   // SetUp/TearDown method of Environment objects registered with Google
   // Test) will be output as attributes of the <testsuites> element.
   static void RecordProperty(const std::string& key, const std::string& value);
-  static void RecordProperty(const std::string& key, int value);
+  // We do not define a custom serialization except for values that can be
+  // converted to int64_t, but other values could be logged in this way.
+  template <typename T, std::enable_if_t<std::is_convertible<T, int64_t>::value,
+                                         bool> = true>
+  static void RecordProperty(const std::string& key, const T& value) {
+    RecordProperty(key, (Message() << value).GetString());
+  }
 
  protected:
   // Creates a Test object.
@@ -533,14 +550,14 @@ class GTEST_API_ TestInfo {
   // Returns the name of the parameter type, or NULL if this is not a typed
   // or a type-parameterized test.
   const char* type_param() const {
-    if (type_param_.get() != nullptr) return type_param_->c_str();
+    if (type_param_ != nullptr) return type_param_->c_str();
     return nullptr;
   }
 
   // Returns the text representation of the value parameter, or NULL if this
   // is not a value-parameterized test.
   const char* value_param() const {
-    if (value_param_.get() != nullptr) return value_param_->c_str();
+    if (value_param_ != nullptr) return value_param_->c_str();
     return nullptr;
   }
 
@@ -582,7 +599,7 @@ class GTEST_API_ TestInfo {
   const TestResult* result() const { return &result_; }
 
  private:
-#if GTEST_HAS_DEATH_TEST
+#ifdef GTEST_HAS_DEATH_TEST
   friend class internal::DefaultDeathTestFactory;
 #endif  // GTEST_HAS_DEATH_TEST
   friend class Test;
@@ -590,7 +607,7 @@ class GTEST_API_ TestInfo {
   friend class internal::UnitTestImpl;
   friend class internal::StreamingListenerTest;
   friend TestInfo* internal::MakeAndRegisterTestInfo(
-      const char* test_suite_name, const char* name, const char* type_param,
+      std::string test_suite_name, const char* name, const char* type_param,
       const char* value_param, internal::CodeLocation code_location,
       internal::TypeId fixture_class_id, internal::SetUpTestSuiteFunc set_up_tc,
       internal::TearDownTestSuiteFunc tear_down_tc,
@@ -598,7 +615,7 @@ class GTEST_API_ TestInfo {
 
   // Constructs a TestInfo object. The newly constructed instance assumes
   // ownership of the factory object.
-  TestInfo(const std::string& test_suite_name, const std::string& name,
+  TestInfo(std::string test_suite_name, std::string name,
            const char* a_type_param,   // NULL if not a type-parameterized test
            const char* a_value_param,  // NULL if not a value-parameterized test
            internal::CodeLocation a_code_location,
@@ -666,7 +683,7 @@ class GTEST_API_ TestSuite {
   //                 this is not a type-parameterized test.
   //   set_up_tc:    pointer to the function that sets up the test suite
   //   tear_down_tc: pointer to the function that tears down the test suite
-  TestSuite(const char* name, const char* a_type_param,
+  TestSuite(const std::string& name, const char* a_type_param,
             internal::SetUpTestSuiteFunc set_up_tc,
             internal::TearDownTestSuiteFunc tear_down_tc);
 
@@ -679,7 +696,7 @@ class GTEST_API_ TestSuite {
   // Returns the name of the parameter type, or NULL if this is not a
   // type-parameterized test suite.
   const char* type_param() const {
-    if (type_param_.get() != nullptr) return type_param_->c_str();
+    if (type_param_ != nullptr) return type_param_->c_str();
     return nullptr;
   }
 
@@ -876,7 +893,7 @@ class GTEST_API_ TestSuite {
 class Environment {
  public:
   // The d'tor is virtual as we need to subclass Environment.
-  virtual ~Environment() {}
+  virtual ~Environment() = default;
 
   // Override this to define how to set up the environment.
   virtual void SetUp() {}
@@ -907,7 +924,7 @@ class GTEST_API_ AssertionException
 // the order the corresponding events are fired.
 class TestEventListener {
  public:
-  virtual ~TestEventListener() {}
+  virtual ~TestEventListener() = default;
 
   // Fired before any test activity starts.
   virtual void OnTestProgramStart(const UnitTest& unit_test) = 0;
@@ -1037,6 +1054,10 @@ class GTEST_API_ TestEventListeners {
     return default_xml_generator_;
   }
 
+  // Controls whether events will be forwarded by the repeater to the
+  // listeners in the list.
+  void SuppressEventForwarding(bool);
+
  private:
   friend class TestSuite;
   friend class TestInfo;
@@ -1066,7 +1087,6 @@ class GTEST_API_ TestEventListeners {
   // Controls whether events will be forwarded by the repeater to the
   // listeners in the list.
   bool EventForwardingEnabled() const;
-  void SuppressEventForwarding();
 
   // The actual list of listeners.
   internal::TestEventRepeater* repeater_;
@@ -1103,7 +1123,7 @@ class GTEST_API_ UnitTest {
   // This method can only be called from the main thread.
   //
   // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
-  int Run() GTEST_MUST_USE_RESULT_;
+  [[nodiscard]] int Run();
 
   // Returns the working directory when the first TEST() or TEST_F()
   // was executed.  The UnitTest object owns the string.
@@ -1242,6 +1262,20 @@ class GTEST_API_ UnitTest {
   // total_test_suite_count() - 1. If i is not in that range, returns NULL.
   TestSuite* GetMutableTestSuite(int i);
 
+  // Invokes OsStackTrackGetterInterface::UponLeavingGTest. UponLeavingGTest()
+  // should be called immediately before Google Test calls user code. It saves
+  // some information about the current stack that CurrentStackTrace() will use
+  // to find and hide Google Test stack frames.
+  void UponLeavingGTest();
+
+  // Sets the TestSuite object for the test that's currently running.
+  void set_current_test_suite(TestSuite* a_current_test_suite)
+      GTEST_LOCK_EXCLUDED_(mutex_);
+
+  // Sets the TestInfo object for the test that's currently running.
+  void set_current_test_info(TestInfo* a_current_test_info)
+      GTEST_LOCK_EXCLUDED_(mutex_);
+
   // Accessors for the implementation object.
   internal::UnitTestImpl* impl() { return impl_; }
   const internal::UnitTestImpl* impl() const { return impl_; }
@@ -1250,6 +1284,8 @@ class GTEST_API_ UnitTest {
   // members of UnitTest.
   friend class ScopedTrace;
   friend class Test;
+  friend class TestInfo;
+  friend class TestSuite;
   friend class internal::AssertHelper;
   friend class internal::StreamingListenerTest;
   friend class internal::UnitTestRecordPropertyTestHelper;
@@ -1553,12 +1589,12 @@ AssertionResult CmpHelperFloatingPointEQ(const char* lhs_expression,
   }
 
   ::std::stringstream lhs_ss;
-  lhs_ss << std::setprecision(std::numeric_limits<RawType>::digits10 + 2)
-         << lhs_value;
+  lhs_ss.precision(std::numeric_limits<RawType>::digits10 + 2);
+  lhs_ss << lhs_value;
 
   ::std::stringstream rhs_ss;
-  rhs_ss << std::setprecision(std::numeric_limits<RawType>::digits10 + 2)
-         << rhs_value;
+  rhs_ss.precision(std::numeric_limits<RawType>::digits10 + 2);
+  rhs_ss << rhs_value;
 
   return EqFailure(lhs_expression, rhs_expression,
                    StringStreamToString(&lhs_ss), StringStreamToString(&rhs_ss),
@@ -1574,6 +1610,8 @@ GTEST_API_ AssertionResult DoubleNearPredFormat(const char* expr1,
                                                 double val1, double val2,
                                                 double abs_error);
 
+using GoogleTest_NotSupported_OnFunctionReturningNonVoid = void;
+
 // INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
 // A class that enables one to stream messages to assertion macros
 class GTEST_API_ AssertHelper {
@@ -1585,7 +1623,8 @@ class GTEST_API_ AssertHelper {
 
   // Message assignment is a semantic trick to enable assertion
   // streaming; see the GTEST_MESSAGE_ macro below.
-  void operator=(const Message& message) const;
+  GoogleTest_NotSupported_OnFunctionReturningNonVoid operator=(
+      const Message& message) const;
 
  private:
   // We put our data in a struct so that the size of the AssertHelper class can
@@ -1625,7 +1664,7 @@ class GTEST_API_ AssertHelper {
 // the GetParam() method.
 //
 // Use it with one of the parameter generator defining functions, like Range(),
-// Values(), ValuesIn(), Bool(), and Combine().
+// Values(), ValuesIn(), Bool(), Combine(), and ConvertGenerator<T>().
 //
 // class FooTest : public ::testing::TestWithParam<int> {
 //  protected:
@@ -1653,11 +1692,11 @@ template <typename T>
 class WithParamInterface {
  public:
   typedef T ParamType;
-  virtual ~WithParamInterface() {}
+  virtual ~WithParamInterface() = default;
 
   // The current parameter value. Is also available in the test fixture's
   // constructor.
-  static const ParamType& GetParam() {
+  [[nodiscard]] static const ParamType& GetParam() {
     GTEST_CHECK_(parameter_ != nullptr)
         << "GetParam() can only be called inside a value-parameterized test "
         << "-- did you intend to write TEST_P instead of TEST_F?";
@@ -1723,14 +1762,15 @@ class TestWithParam : public Test, public WithParamInterface<T> {};
 #define GTEST_FAIL() GTEST_FATAL_FAILURE_("Failed")
 
 // Like GTEST_FAIL(), but at the given source file location.
-#define GTEST_FAIL_AT(file, line)         \
-  GTEST_MESSAGE_AT_(file, line, "Failed", \
-                    ::testing::TestPartResult::kFatalFailure)
+#define GTEST_FAIL_AT(file, line)                \
+  return GTEST_MESSAGE_AT_(file, line, "Failed", \
+                           ::testing::TestPartResult::kFatalFailure)
 
 // Define this macro to 1 to omit the definition of FAIL(), which is a
 // generic name and clashes with some other libraries.
-#if !GTEST_DONT_DEFINE_FAIL
+#if !(defined(GTEST_DONT_DEFINE_FAIL) && GTEST_DONT_DEFINE_FAIL)
 #define FAIL() GTEST_FAIL()
+#define FAIL_AT(file, line) GTEST_FAIL_AT(file, line)
 #endif
 
 // Generates a success with a generic message.
@@ -1738,7 +1778,7 @@ class TestWithParam : public Test, public WithParamInterface<T> {};
 
 // Define this macro to 1 to omit the definition of SUCCEED(), which
 // is a generic name and clashes with some other libraries.
-#if !GTEST_DONT_DEFINE_SUCCEED
+#if !(defined(GTEST_DONT_DEFINE_SUCCEED) && GTEST_DONT_DEFINE_SUCCEED)
 #define SUCCEED() GTEST_SUCCEED()
 #endif
 
@@ -1782,19 +1822,19 @@ class TestWithParam : public Test, public WithParamInterface<T> {};
 // Define these macros to 1 to omit the definition of the corresponding
 // EXPECT or ASSERT, which clashes with some users' own code.
 
-#if !GTEST_DONT_DEFINE_EXPECT_TRUE
+#if !(defined(GTEST_DONT_DEFINE_EXPECT_TRUE) && GTEST_DONT_DEFINE_EXPECT_TRUE)
 #define EXPECT_TRUE(condition) GTEST_EXPECT_TRUE(condition)
 #endif
 
-#if !GTEST_DONT_DEFINE_EXPECT_FALSE
+#if !(defined(GTEST_DONT_DEFINE_EXPECT_FALSE) && GTEST_DONT_DEFINE_EXPECT_FALSE)
 #define EXPECT_FALSE(condition) GTEST_EXPECT_FALSE(condition)
 #endif
 
-#if !GTEST_DONT_DEFINE_ASSERT_TRUE
+#if !(defined(GTEST_DONT_DEFINE_ASSERT_TRUE) && GTEST_DONT_DEFINE_ASSERT_TRUE)
 #define ASSERT_TRUE(condition) GTEST_ASSERT_TRUE(condition)
 #endif
 
-#if !GTEST_DONT_DEFINE_ASSERT_FALSE
+#if !(defined(GTEST_DONT_DEFINE_ASSERT_FALSE) && GTEST_DONT_DEFINE_ASSERT_FALSE)
 #define ASSERT_FALSE(condition) GTEST_ASSERT_FALSE(condition)
 #endif
 
@@ -1873,27 +1913,27 @@ class TestWithParam : public Test, public WithParamInterface<T> {};
 // Define macro GTEST_DONT_DEFINE_ASSERT_XY to 1 to omit the definition of
 // ASSERT_XY(), which clashes with some users' own code.
 
-#if !GTEST_DONT_DEFINE_ASSERT_EQ
+#if !(defined(GTEST_DONT_DEFINE_ASSERT_EQ) && GTEST_DONT_DEFINE_ASSERT_EQ)
 #define ASSERT_EQ(val1, val2) GTEST_ASSERT_EQ(val1, val2)
 #endif
 
-#if !GTEST_DONT_DEFINE_ASSERT_NE
+#if !(defined(GTEST_DONT_DEFINE_ASSERT_NE) && GTEST_DONT_DEFINE_ASSERT_NE)
 #define ASSERT_NE(val1, val2) GTEST_ASSERT_NE(val1, val2)
 #endif
 
-#if !GTEST_DONT_DEFINE_ASSERT_LE
+#if !(defined(GTEST_DONT_DEFINE_ASSERT_LE) && GTEST_DONT_DEFINE_ASSERT_LE)
 #define ASSERT_LE(val1, val2) GTEST_ASSERT_LE(val1, val2)
 #endif
 
-#if !GTEST_DONT_DEFINE_ASSERT_LT
+#if !(defined(GTEST_DONT_DEFINE_ASSERT_LT) && GTEST_DONT_DEFINE_ASSERT_LT)
 #define ASSERT_LT(val1, val2) GTEST_ASSERT_LT(val1, val2)
 #endif
 
-#if !GTEST_DONT_DEFINE_ASSERT_GE
+#if !(defined(GTEST_DONT_DEFINE_ASSERT_GE) && GTEST_DONT_DEFINE_ASSERT_GE)
 #define ASSERT_GE(val1, val2) GTEST_ASSERT_GE(val1, val2)
 #endif
 
-#if !GTEST_DONT_DEFINE_ASSERT_GT
+#if !(defined(GTEST_DONT_DEFINE_ASSERT_GT) && GTEST_DONT_DEFINE_ASSERT_GT)
 #define ASSERT_GT(val1, val2) GTEST_ASSERT_GT(val1, val2)
 #endif
 
@@ -1981,7 +2021,7 @@ GTEST_API_ AssertionResult FloatLE(const char* expr1, const char* expr2,
 GTEST_API_ AssertionResult DoubleLE(const char* expr1, const char* expr2,
                                     double val1, double val2);
 
-#if GTEST_OS_WINDOWS
+#ifdef GTEST_OS_WINDOWS
 
 // Macros that test for HRESULT failure and success, these are only useful
 // on Windows, and rely on Windows SDK macros and APIs to compile.
@@ -2063,9 +2103,7 @@ class GTEST_API_ ScopedTrace {
 
   ScopedTrace(const ScopedTrace&) = delete;
   ScopedTrace& operator=(const ScopedTrace&) = delete;
-} GTEST_ATTRIBUTE_UNUSED_;  // A ScopedTrace object does its job in its
-                            // c'tor and d'tor.  Therefore it doesn't
-                            // need to be used otherwise.
+};
 
 // Causes a trace (including the source file path, the current line
 // number, and the given message) to be included in every test failure
@@ -2082,8 +2120,8 @@ class GTEST_API_ ScopedTrace {
 // Assuming that each thread maintains its own stack of traces.
 // Therefore, a SCOPED_TRACE() would (correctly) only affect the
 // assertions in its own thread.
-#define SCOPED_TRACE(message)                                         \
-  ::testing::ScopedTrace GTEST_CONCAT_TOKEN_(gtest_trace_, __LINE__)( \
+#define SCOPED_TRACE(message)                                               \
+  const ::testing::ScopedTrace GTEST_CONCAT_TOKEN_(gtest_trace_, __LINE__)( \
       __FILE__, __LINE__, (message))
 
 // Compile-time assertion for type equality.
@@ -2153,7 +2191,7 @@ constexpr bool StaticAssertTypeEq() noexcept {
 
 // Define this macro to 1 to omit the definition of TEST(), which
 // is a generic name and clashes with some other libraries.
-#if !GTEST_DONT_DEFINE_TEST
+#if !(defined(GTEST_DONT_DEFINE_TEST) && GTEST_DONT_DEFINE_TEST)
 #define TEST(test_suite_name, test_name) GTEST_TEST(test_suite_name, test_name)
 #endif
 
@@ -2185,17 +2223,22 @@ constexpr bool StaticAssertTypeEq() noexcept {
 #define GTEST_TEST_F(test_fixture, test_name)        \
   GTEST_TEST_(test_fixture, test_name, test_fixture, \
               ::testing::internal::GetTypeId<test_fixture>())
-#if !GTEST_DONT_DEFINE_TEST_F
+#if !(defined(GTEST_DONT_DEFINE_TEST_F) && GTEST_DONT_DEFINE_TEST_F)
 #define TEST_F(test_fixture, test_name) GTEST_TEST_F(test_fixture, test_name)
 #endif
 
-// Returns a path to temporary directory.
-// Tries to determine an appropriate directory for the platform.
+// Returns a path to a temporary directory, which should be writable. It is
+// implementation-dependent whether or not the path is terminated by the
+// directory-separator character.
 GTEST_API_ std::string TempDir();
 
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
+// Returns a path to a directory that contains ancillary data files that might
+// be used by tests. It is implementation dependent whether or not the path is
+// terminated by the directory-separator character. The directory and the files
+// in it should be considered read-only.
+GTEST_API_ std::string SrcDir();
+
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4805 4100
 
 // Dynamically registers a test with the framework.
 //
@@ -2284,11 +2327,12 @@ TestInfo* RegisterTest(const char* test_suite_name, const char* test_name,
 // tests are successful, or 1 otherwise.
 //
 // RUN_ALL_TESTS() should be invoked after the command line has been
-// parsed by InitGoogleTest().
+// parsed by InitGoogleTest(). RUN_ALL_TESTS will tear down and delete any
+// installed environments and should only be called once per binary.
 //
 // This function was formerly a macro; thus, it is in the global
 // namespace and has an all-caps name.
-int RUN_ALL_TESTS() GTEST_MUST_USE_RESULT_;
+[[nodiscard]] int RUN_ALL_TESTS();
 
 inline int RUN_ALL_TESTS() { return ::testing::UnitTest::GetInstance()->Run(); }
 

googletest/include/gtest/internal/gtest-death-test-internal.h

@@ -42,21 +42,43 @@
 #include <stdio.h>
 
 #include <memory>
+#include <string>
 
 #include "gtest/gtest-matchers.h"
 #include "gtest/internal/gtest-internal.h"
+#include "gtest/internal/gtest-port.h"
 
 GTEST_DECLARE_string_(internal_run_death_test);
 
 namespace testing {
 namespace internal {
 
-// Names of the flags (needed for parsing Google Test flags).
-const char kDeathTestStyleFlag[] = "death_test_style";
-const char kDeathTestUseFork[] = "death_test_use_fork";
+// Name of the flag (needed for parsing Google Test flag).
 const char kInternalRunDeathTestFlag[] = "internal_run_death_test";
 
-#if GTEST_HAS_DEATH_TEST
+// A string passed to EXPECT_DEATH (etc.) is caught by one of these overloads
+// and interpreted as a regex (rather than an Eq matcher) for legacy
+// compatibility.
+inline Matcher<const ::std::string&> MakeDeathTestMatcher(
+    ::testing::internal::RE regex) {
+  return ContainsRegex(regex.pattern());
+}
+inline Matcher<const ::std::string&> MakeDeathTestMatcher(const char* regex) {
+  return ContainsRegex(regex);
+}
+inline Matcher<const ::std::string&> MakeDeathTestMatcher(
+    const ::std::string& regex) {
+  return ContainsRegex(regex);
+}
+
+// If a Matcher<const ::std::string&> is passed to EXPECT_DEATH (etc.), it's
+// used directly.
+inline Matcher<const ::std::string&> MakeDeathTestMatcher(
+    Matcher<const ::std::string&> matcher) {
+  return matcher;
+}
+
+#ifdef GTEST_HAS_DEATH_TEST
 
 GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
 /* class A needs to have dll-interface to be used by clients of class B */)
@@ -72,7 +94,7 @@ GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
 //
 // exit status:  The integer exit information in the format specified
 //               by wait(2)
-// exit code:    The integer code passed to exit(3), _exit(2), or
+// exit code:    The integer code passed to exit(3), _Exit(2), or
 //               returned from main()
 class GTEST_API_ DeathTest {
  public:
@@ -87,7 +109,7 @@ class GTEST_API_ DeathTest {
   static bool Create(const char* statement, Matcher<const std::string&> matcher,
                      const char* file, int line, DeathTest** test);
   DeathTest();
-  virtual ~DeathTest() {}
+  virtual ~DeathTest() = default;
 
   // A helper class that aborts a death test when it's deleted.
   class ReturnSentinel {
@@ -99,7 +121,7 @@ class GTEST_API_ DeathTest {
     DeathTest* const test_;
     ReturnSentinel(const ReturnSentinel&) = delete;
     ReturnSentinel& operator=(const ReturnSentinel&) = delete;
-  } GTEST_ATTRIBUTE_UNUSED_;
+  };
 
   // An enumeration of possible roles that may be taken when a death
   // test is encountered.  EXECUTE means that the death test logic should
@@ -152,7 +174,7 @@ GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
 // Factory interface for death tests.  May be mocked out for testing.
 class DeathTestFactory {
  public:
-  virtual ~DeathTestFactory() {}
+  virtual ~DeathTestFactory() = default;
   virtual bool Create(const char* statement,
                       Matcher<const std::string&> matcher, const char* file,
                       int line, DeathTest** test) = 0;
@@ -169,28 +191,6 @@ class DefaultDeathTestFactory : public DeathTestFactory {
 // by a signal, or exited normally with a nonzero exit code.
 GTEST_API_ bool ExitedUnsuccessfully(int exit_status);
 
-// A string passed to EXPECT_DEATH (etc.) is caught by one of these overloads
-// and interpreted as a regex (rather than an Eq matcher) for legacy
-// compatibility.
-inline Matcher<const ::std::string&> MakeDeathTestMatcher(
-    ::testing::internal::RE regex) {
-  return ContainsRegex(regex.pattern());
-}
-inline Matcher<const ::std::string&> MakeDeathTestMatcher(const char* regex) {
-  return ContainsRegex(regex);
-}
-inline Matcher<const ::std::string&> MakeDeathTestMatcher(
-    const ::std::string& regex) {
-  return ContainsRegex(regex);
-}
-
-// If a Matcher<const ::std::string&> is passed to EXPECT_DEATH (etc.), it's
-// used directly.
-inline Matcher<const ::std::string&> MakeDeathTestMatcher(
-    Matcher<const ::std::string&> matcher) {
-  return matcher;
-}
-
 // Traps C++ exceptions escaping statement and reports them as test
 // failures. Note that trapping SEH exceptions is not implemented here.
 #if GTEST_HAS_EXCEPTIONS
@@ -237,7 +237,7 @@ inline Matcher<const ::std::string&> MakeDeathTestMatcher(
           }                                                                    \
           break;                                                               \
         case ::testing::internal::DeathTest::EXECUTE_TEST: {                   \
-          ::testing::internal::DeathTest::ReturnSentinel gtest_sentinel(       \
+          const ::testing::internal::DeathTest::ReturnSentinel gtest_sentinel( \
               gtest_dt);                                                       \
           GTEST_EXECUTE_DEATH_TEST_STATEMENT_(statement, gtest_dt);            \
           gtest_dt->Abort(::testing::internal::DeathTest::TEST_DID_NOT_DIE);   \

googletest/include/gtest/internal/gtest-filepath.h

@@ -42,11 +42,17 @@
 #ifndef GOOGLETEST_INCLUDE_GTEST_INTERNAL_GTEST_FILEPATH_H_
 #define GOOGLETEST_INCLUDE_GTEST_INTERNAL_GTEST_FILEPATH_H_
 
+#include <string>
+#include <utility>
+
+#include "gtest/internal/gtest-port.h"
 #include "gtest/internal/gtest-string.h"
 
 GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
 /* class A needs to have dll-interface to be used by clients of class B */)
 
+#if GTEST_HAS_FILE_SYSTEM
+
 namespace testing {
 namespace internal {
 
@@ -65,8 +71,9 @@ class GTEST_API_ FilePath {
  public:
   FilePath() : pathname_("") {}
   FilePath(const FilePath& rhs) : pathname_(rhs.pathname_) {}
+  FilePath(FilePath&& rhs) noexcept : pathname_(std::move(rhs.pathname_)) {}
 
-  explicit FilePath(const std::string& pathname) : pathname_(pathname) {
+  explicit FilePath(std::string pathname) : pathname_(std::move(pathname)) {
     Normalize();
   }
 
@@ -74,6 +81,10 @@ class GTEST_API_ FilePath {
     Set(rhs);
     return *this;
   }
+  FilePath& operator=(FilePath&& rhs) noexcept {
+    pathname_ = std::move(rhs.pathname_);
+    return *this;
+  }
 
   void Set(const FilePath& rhs) { pathname_ = rhs.pathname_; }
 
@@ -199,6 +210,16 @@ class GTEST_API_ FilePath {
   // separators. Returns NULL if no path separator was found.
   const char* FindLastPathSeparator() const;
 
+  // Returns the length of the path root, including the directory separator at
+  // the end of the prefix. Returns zero by definition if the path is relative.
+  // Examples:
+  // - [Windows] "..\Sibling" => 0
+  // - [Windows] "\Windows" => 1
+  // - [Windows] "C:/Windows\Notepad.exe" => 3
+  // - [Windows] "\\Host\Share\C$/Windows" => 13
+  // - [UNIX] "/bin" => 1
+  size_t CalculateRootLength() const;
+
   std::string pathname_;
 };  // class FilePath
 
@@ -207,4 +228,6 @@ class GTEST_API_ FilePath {
 
 GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
 
+#endif  // GTEST_HAS_FILE_SYSTEM
+
 #endif  // GOOGLETEST_INCLUDE_GTEST_INTERNAL_GTEST_FILEPATH_H_

googletest/include/gtest/internal/gtest-internal.h

@@ -41,7 +41,7 @@
 
 #include "gtest/internal/gtest-port.h"
 
-#if GTEST_OS_LINUX
+#ifdef GTEST_OS_LINUX
 #include <stdlib.h>
 #include <sys/types.h>
 #include <sys/wait.h>
@@ -57,12 +57,13 @@
 #include <string.h>
 
 #include <cstdint>
-#include <iomanip>
+#include <functional>
 #include <limits>
 #include <map>
 #include <set>
 #include <string>
 #include <type_traits>
+#include <utility>
 #include <vector>
 
 #include "gtest/gtest-message.h"
@@ -77,7 +78,7 @@
 //
 // will result in the token foo__LINE__, instead of foo followed by
 // the current line number.  For more details, see
-// http://www.parashift.com/c++-faq-lite/misc-technical-issues.html#faq-39.6
+// https://www.parashift.com/c++-faq-lite/misc-technical-issues.html#faq-39.6
 #define GTEST_CONCAT_TOKEN_(foo, bar) GTEST_CONCAT_TOKEN_IMPL_(foo, bar)
 #define GTEST_CONCAT_TOKEN_IMPL_(foo, bar) foo##bar
 
@@ -168,7 +169,7 @@ namespace edit_distance {
 // All edits cost the same, with replace having lower priority than
 // add/remove.
 // Simple implementation of the Wagner-Fischer algorithm.
-// See http://en.wikipedia.org/wiki/Wagner-Fischer_algorithm
+// See https://en.wikipedia.org/wiki/Wagner-Fischer_algorithm
 enum EditType { kMatch, kAdd, kRemove, kReplace };
 GTEST_API_ std::vector<EditType> CalculateOptimalEdits(
     const std::vector<size_t>& left, const std::vector<size_t>& right);
@@ -235,7 +236,7 @@ GTEST_API_ std::string GetBoolAssertionFailureMessage(
 //   For double, there are 11 exponent bits and 52 fraction bits.
 //
 //   More details can be found at
-//   http://en.wikipedia.org/wiki/IEEE_floating-point_standard.
+//   https://en.wikipedia.org/wiki/IEEE_floating-point_standard.
 //
 // Template parameter:
 //
@@ -280,7 +281,7 @@ class FloatingPoint {
   // bits.  Therefore, 4 should be enough for ordinary use.
   //
   // See the following article for more details on ULP:
-  // http://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/
+  // https://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/
   static const uint32_t kMaxUlps = 4;
 
   // Constructs a FloatingPoint from a raw floating-point number.
@@ -289,38 +290,35 @@ class FloatingPoint {
   // around may change its bits, although the new value is guaranteed
   // to be also a NAN.  Therefore, don't expect this constructor to
   // preserve the bits in x when x is a NAN.
-  explicit FloatingPoint(const RawType& x) { u_.value_ = x; }
+  explicit FloatingPoint(RawType x) { memcpy(&bits_, &x, sizeof(x)); }
 
   // Static methods
 
   // Reinterprets a bit pattern as a floating-point number.
   //
   // This function is needed to test the AlmostEquals() method.
-  static RawType ReinterpretBits(const Bits bits) {
-    FloatingPoint fp(0);
-    fp.u_.bits_ = bits;
-    return fp.u_.value_;
+  static RawType ReinterpretBits(Bits bits) {
+    RawType fp;
+    memcpy(&fp, &bits, sizeof(fp));
+    return fp;
   }
 
   // Returns the floating-point number that represent positive infinity.
   static RawType Infinity() { return ReinterpretBits(kExponentBitMask); }
 
-  // Returns the maximum representable finite floating-point number.
-  static RawType Max();
-
   // Non-static methods
 
   // Returns the bits that represents this number.
-  const Bits& bits() const { return u_.bits_; }
+  const Bits& bits() const { return bits_; }
 
   // Returns the exponent bits of this number.
-  Bits exponent_bits() const { return kExponentBitMask & u_.bits_; }
+  Bits exponent_bits() const { return kExponentBitMask & bits_; }
 
   // Returns the fraction bits of this number.
-  Bits fraction_bits() const { return kFractionBitMask & u_.bits_; }
+  Bits fraction_bits() const { return kFractionBitMask & bits_; }
 
   // Returns the sign bit of this number.
-  Bits sign_bit() const { return kSignBitMask & u_.bits_; }
+  Bits sign_bit() const { return kSignBitMask & bits_; }
 
   // Returns true if and only if this is NAN (not a number).
   bool is_nan() const {
@@ -334,23 +332,16 @@ class FloatingPoint {
   //
   //   - returns false if either number is (or both are) NAN.
   //   - treats really large numbers as almost equal to infinity.
-  //   - thinks +0.0 and -0.0 are 0 DLP's apart.
+  //   - thinks +0.0 and -0.0 are 0 ULP's apart.
   bool AlmostEquals(const FloatingPoint& rhs) const {
     // The IEEE standard says that any comparison operation involving
     // a NAN must return false.
     if (is_nan() || rhs.is_nan()) return false;
 
-    return DistanceBetweenSignAndMagnitudeNumbers(u_.bits_, rhs.u_.bits_) <=
-           kMaxUlps;
+    return DistanceBetweenSignAndMagnitudeNumbers(bits_, rhs.bits_) <= kMaxUlps;
   }
 
  private:
-  // The data type used to store the actual floating-point number.
-  union FloatingPointUnion {
-    RawType value_;  // The raw floating-point number.
-    Bits bits_;      // The bits that represent the number.
-  };
-
   // Converts an integer from the sign-and-magnitude representation to
   // the biased representation.  More precisely, let N be 2 to the
   // power of (kBitCount - 1), an integer x is represented by the
@@ -364,9 +355,9 @@ class FloatingPoint {
   //   N - 1  (the biggest number representable using
   //          sign-and-magnitude) is represented by 2N - 1.
   //
-  // Read http://en.wikipedia.org/wiki/Signed_number_representations
+  // Read https://en.wikipedia.org/wiki/Signed_number_representations
   // for more details on signed number representations.
-  static Bits SignAndMagnitudeToBiased(const Bits& sam) {
+  static Bits SignAndMagnitudeToBiased(Bits sam) {
     if (kSignBitMask & sam) {
       // sam represents a negative number.
       return ~sam + 1;
@@ -378,27 +369,15 @@ class FloatingPoint {
 
   // Given two numbers in the sign-and-magnitude representation,
   // returns the distance between them as an unsigned number.
-  static Bits DistanceBetweenSignAndMagnitudeNumbers(const Bits& sam1,
-                                                     const Bits& sam2) {
+  static Bits DistanceBetweenSignAndMagnitudeNumbers(Bits sam1, Bits sam2) {
     const Bits biased1 = SignAndMagnitudeToBiased(sam1);
     const Bits biased2 = SignAndMagnitudeToBiased(sam2);
     return (biased1 >= biased2) ? (biased1 - biased2) : (biased2 - biased1);
   }
 
-  FloatingPointUnion u_;
+  Bits bits_;  // The bits that represent the number.
 };
 
-// We cannot use std::numeric_limits<T>::max() as it clashes with the max()
-// macro defined by <windows.h>.
-template <>
-inline float FloatingPoint<float>::Max() {
-  return FLT_MAX;
-}
-template <>
-inline double FloatingPoint<double>::Max() {
-  return DBL_MAX;
-}
-
 // Typedefs the instances of the FloatingPoint template class that we
 // care to use.
 typedef FloatingPoint<float> Float;
@@ -447,7 +426,7 @@ GTEST_API_ TypeId GetTestTypeId();
 // of a Test object.
 class TestFactoryBase {
  public:
-  virtual ~TestFactoryBase() {}
+  virtual ~TestFactoryBase() = default;
 
   // Creates a test instance to run. The instance is both created and destroyed
   // within TestInfoImpl::Run()
@@ -461,7 +440,7 @@ class TestFactoryBase {
   TestFactoryBase& operator=(const TestFactoryBase&) = delete;
 };
 
-// This class provides implementation of TeastFactoryBase interface.
+// This class provides implementation of TestFactoryBase interface.
 // It is used in TEST and TEST_F macros.
 template <class TestClass>
 class TestFactoryImpl : public TestFactoryBase {
@@ -469,7 +448,7 @@ class TestFactoryImpl : public TestFactoryBase {
   Test* CreateTest() override { return new TestClass; }
 };
 
-#if GTEST_OS_WINDOWS
+#ifdef GTEST_OS_WINDOWS
 
 // Predicate-formatters for implementing the HRESULT checking macros
 // {ASSERT|EXPECT}_HRESULT_{SUCCEEDED|FAILED}
@@ -487,8 +466,8 @@ using SetUpTestSuiteFunc = void (*)();
 using TearDownTestSuiteFunc = void (*)();
 
 struct CodeLocation {
-  CodeLocation(const std::string& a_file, int a_line)
-      : file(a_file), line(a_line) {}
+  CodeLocation(std::string a_file, int a_line)
+      : file(std::move(a_file)), line(a_line) {}
 
   std::string file;
   int line;
@@ -568,7 +547,7 @@ struct SuiteApiResolver : T {
 //   type_param:       the name of the test's type parameter, or NULL if
 //                     this is not a typed or a type-parameterized test.
 //   value_param:      text representation of the test's value parameter,
-//                     or NULL if this is not a type-parameterized test.
+//                     or NULL if this is not a value-parameterized test.
 //   code_location:    code location where the test is defined
 //   fixture_class_id: ID of the test fixture class
 //   set_up_tc:        pointer to the function that sets up the test suite
@@ -577,7 +556,7 @@ struct SuiteApiResolver : T {
 //                     The newly created TestInfo instance will assume
 //                     ownership of the factory object.
 GTEST_API_ TestInfo* MakeAndRegisterTestInfo(
-    const char* test_suite_name, const char* name, const char* type_param,
+    std::string test_suite_name, const char* name, const char* type_param,
     const char* value_param, CodeLocation code_location,
     TypeId fixture_class_id, SetUpTestSuiteFunc set_up_tc,
     TearDownTestSuiteFunc tear_down_tc, TestFactoryBase* factory);
@@ -608,8 +587,7 @@ class GTEST_API_ TypedTestSuitePState {
       fflush(stderr);
       posix::Abort();
     }
-    registered_tests_.insert(
-        ::std::make_pair(test_name, CodeLocation(file, line)));
+    registered_tests_.emplace(test_name, CodeLocation(file, line));
     return true;
   }
 
@@ -631,7 +609,7 @@ class GTEST_API_ TypedTestSuitePState {
                                         const char* registered_tests);
 
  private:
-  typedef ::std::map<std::string, CodeLocation> RegisteredTestsMap;
+  typedef ::std::map<std::string, CodeLocation, std::less<>> RegisteredTestsMap;
 
   bool registered_;
   RegisteredTestsMap registered_tests_;
@@ -713,7 +691,7 @@ class TypeParameterizedTest {
   // specified in INSTANTIATE_TYPED_TEST_SUITE_P(Prefix, TestSuite,
   // Types).  Valid values for 'index' are [0, N - 1] where N is the
   // length of Types.
-  static bool Register(const char* prefix, const CodeLocation& code_location,
+  static bool Register(const char* prefix, CodeLocation code_location,
                        const char* case_name, const char* test_names, int index,
                        const std::vector<std::string>& type_names =
                            GenerateNames<DefaultNameGenerator, Types>()) {
@@ -725,8 +703,7 @@ class TypeParameterizedTest {
     // list.
     MakeAndRegisterTestInfo(
         (std::string(prefix) + (prefix[0] == '\0' ? "" : "/") + case_name +
-         "/" + type_names[static_cast<size_t>(index)])
-            .c_str(),
+         "/" + type_names[static_cast<size_t>(index)]),
         StripTrailingSpaces(GetPrefixUntilComma(test_names)).c_str(),
         GetTypeName<Type>().c_str(),
         nullptr,  // No value parameter.
@@ -738,13 +715,9 @@ class TypeParameterizedTest {
         new TestFactoryImpl<TestClass>);
 
     // Next, recurses (at compile time) with the tail of the type list.
-    return TypeParameterizedTest<Fixture, TestSel,
-                                 typename Types::Tail>::Register(prefix,
-                                                                 code_location,
-                                                                 case_name,
-                                                                 test_names,
-                                                                 index + 1,
-                                                                 type_names);
+    return TypeParameterizedTest<Fixture, TestSel, typename Types::Tail>::
+        Register(prefix, std::move(code_location), case_name, test_names,
+                 index + 1, type_names);
   }
 };
 
@@ -752,7 +725,7 @@ class TypeParameterizedTest {
 template <GTEST_TEMPLATE_ Fixture, class TestSel>
 class TypeParameterizedTest<Fixture, TestSel, internal::None> {
  public:
-  static bool Register(const char* /*prefix*/, const CodeLocation&,
+  static bool Register(const char* /*prefix*/, CodeLocation,
                        const char* /*case_name*/, const char* /*test_names*/,
                        int /*index*/,
                        const std::vector<std::string>& =
@@ -799,7 +772,8 @@ class TypeParameterizedTestSuite {
 
     // Next, recurses (at compile time) with the tail of the test list.
     return TypeParameterizedTestSuite<Fixture, typename Tests::Tail,
-                                      Types>::Register(prefix, code_location,
+                                      Types>::Register(prefix,
+                                                       std::move(code_location),
                                                        state, case_name,
                                                        SkipComma(test_names),
                                                        type_names);
@@ -829,8 +803,7 @@ class TypeParameterizedTestSuite<Fixture, internal::None, Types> {
 // For example, if Foo() calls Bar(), which in turn calls
 // GetCurrentOsStackTraceExceptTop(..., 1), Foo() will be included in
 // the trace but Bar() and GetCurrentOsStackTraceExceptTop() won't.
-GTEST_API_ std::string GetCurrentOsStackTraceExceptTop(UnitTest* unit_test,
-                                                       int skip_count);
+GTEST_API_ std::string GetCurrentOsStackTraceExceptTop(int skip_count);
 
 // Helpers for suppressing warnings on unreachable code or constant
 // condition.
@@ -913,9 +886,6 @@ class HasDebugStringAndShortDebugString {
       HasDebugStringType::value && HasShortDebugStringType::value;
 };
 
-template <typename T>
-constexpr bool HasDebugStringAndShortDebugString<T>::value;
-
 // When the compiler sees expression IsContainerTest<C>(0), if C is an
 // STL-style container class, the first overload of IsContainerTest
 // will be viable (since both C::iterator* and C::const_iterator* are
@@ -1154,40 +1124,6 @@ class NativeArray {
   void (NativeArray::*clone_)(const Element*, size_t);
 };
 
-// Backport of std::index_sequence.
-template <size_t... Is>
-struct IndexSequence {
-  using type = IndexSequence;
-};
-
-// Double the IndexSequence, and one if plus_one is true.
-template <bool plus_one, typename T, size_t sizeofT>
-struct DoubleSequence;
-template <size_t... I, size_t sizeofT>
-struct DoubleSequence<true, IndexSequence<I...>, sizeofT> {
-  using type = IndexSequence<I..., (sizeofT + I)..., 2 * sizeofT>;
-};
-template <size_t... I, size_t sizeofT>
-struct DoubleSequence<false, IndexSequence<I...>, sizeofT> {
-  using type = IndexSequence<I..., (sizeofT + I)...>;
-};
-
-// Backport of std::make_index_sequence.
-// It uses O(ln(N)) instantiation depth.
-template <size_t N>
-struct MakeIndexSequenceImpl
-    : DoubleSequence<N % 2 == 1, typename MakeIndexSequenceImpl<N / 2>::type,
-                     N / 2>::type {};
-
-template <>
-struct MakeIndexSequenceImpl<0> : IndexSequence<> {};
-
-template <size_t N>
-using MakeIndexSequence = typename MakeIndexSequenceImpl<N>::type;
-
-template <typename... T>
-using IndexSequenceFor = typename MakeIndexSequence<sizeof...(T)>::type;
-
 template <size_t>
 struct Ignore {
   Ignore(...);  // NOLINT
@@ -1196,7 +1132,7 @@ struct Ignore {
 template <typename>
 struct ElemFromListImpl;
 template <size_t... I>
-struct ElemFromListImpl<IndexSequence<I...>> {
+struct ElemFromListImpl<std::index_sequence<I...>> {
   // We make Ignore a template to solve a problem with MSVC.
   // A non-template Ignore would work fine with `decltype(Ignore(I))...`, but
   // MSVC doesn't understand how to deal with that pack expansion.
@@ -1207,9 +1143,8 @@ struct ElemFromListImpl<IndexSequence<I...>> {
 
 template <size_t N, typename... T>
 struct ElemFromList {
-  using type =
-      decltype(ElemFromListImpl<typename MakeIndexSequence<N>::type>::Apply(
-          static_cast<T (*)()>(nullptr)...));
+  using type = decltype(ElemFromListImpl<std::make_index_sequence<N>>::Apply(
+      static_cast<T (*)()>(nullptr)...));
 };
 
 struct FlatTupleConstructTag {};
@@ -1234,9 +1169,9 @@ template <typename Derived, typename Idx>
 struct FlatTupleBase;
 
 template <size_t... Idx, typename... T>
-struct FlatTupleBase<FlatTuple<T...>, IndexSequence<Idx...>>
+struct FlatTupleBase<FlatTuple<T...>, std::index_sequence<Idx...>>
     : FlatTupleElemBase<FlatTuple<T...>, Idx>... {
-  using Indices = IndexSequence<Idx...>;
+  using Indices = std::index_sequence<Idx...>;
   FlatTupleBase() = default;
   template <typename... Args>
   explicit FlatTupleBase(FlatTupleConstructTag, Args&&... args)
@@ -1271,14 +1206,15 @@ struct FlatTupleBase<FlatTuple<T...>, IndexSequence<Idx...>>
 // implementations.
 // FlatTuple and ElemFromList are not recursive and have a fixed depth
 // regardless of T...
-// MakeIndexSequence, on the other hand, it is recursive but with an
+// std::make_index_sequence, on the other hand, it is recursive but with an
 // instantiation depth of O(ln(N)).
 template <typename... T>
 class FlatTuple
     : private FlatTupleBase<FlatTuple<T...>,
-                            typename MakeIndexSequence<sizeof...(T)>::type> {
-  using Indices = typename FlatTupleBase<
-      FlatTuple<T...>, typename MakeIndexSequence<sizeof...(T)>::type>::Indices;
+                            std::make_index_sequence<sizeof...(T)>> {
+  using Indices =
+      typename FlatTupleBase<FlatTuple<T...>,
+                             std::make_index_sequence<sizeof...(T)>>::Indices;
 
  public:
   FlatTuple() = default;
@@ -1292,30 +1228,40 @@ class FlatTuple
 
 // Utility functions to be called with static_assert to induce deprecation
 // warnings.
-GTEST_INTERNAL_DEPRECATED(
+[[deprecated(
     "INSTANTIATE_TEST_CASE_P is deprecated, please use "
-    "INSTANTIATE_TEST_SUITE_P")
-constexpr bool InstantiateTestCase_P_IsDeprecated() { return true; }
+    "INSTANTIATE_TEST_SUITE_P")]]
+constexpr bool InstantiateTestCase_P_IsDeprecated() {
+  return true;
+}
 
-GTEST_INTERNAL_DEPRECATED(
+[[deprecated(
     "TYPED_TEST_CASE_P is deprecated, please use "
-    "TYPED_TEST_SUITE_P")
-constexpr bool TypedTestCase_P_IsDeprecated() { return true; }
+    "TYPED_TEST_SUITE_P")]]
+constexpr bool TypedTestCase_P_IsDeprecated() {
+  return true;
+}
 
-GTEST_INTERNAL_DEPRECATED(
+[[deprecated(
     "TYPED_TEST_CASE is deprecated, please use "
-    "TYPED_TEST_SUITE")
-constexpr bool TypedTestCaseIsDeprecated() { return true; }
+    "TYPED_TEST_SUITE")]]
+constexpr bool TypedTestCaseIsDeprecated() {
+  return true;
+}
 
-GTEST_INTERNAL_DEPRECATED(
+[[deprecated(
     "REGISTER_TYPED_TEST_CASE_P is deprecated, please use "
-    "REGISTER_TYPED_TEST_SUITE_P")
-constexpr bool RegisterTypedTestCase_P_IsDeprecated() { return true; }
+    "REGISTER_TYPED_TEST_SUITE_P")]]
+constexpr bool RegisterTypedTestCase_P_IsDeprecated() {
+  return true;
+}
 
-GTEST_INTERNAL_DEPRECATED(
+[[deprecated(
     "INSTANTIATE_TYPED_TEST_CASE_P is deprecated, please use "
-    "INSTANTIATE_TYPED_TEST_SUITE_P")
-constexpr bool InstantiateTypedTestCase_P_IsDeprecated() { return true; }
+    "INSTANTIATE_TYPED_TEST_SUITE_P")]]
+constexpr bool InstantiateTypedTestCase_P_IsDeprecated() {
+  return true;
+}
 
 }  // namespace internal
 }  // namespace testing
@@ -1508,19 +1454,20 @@ class NeverThrown {
              gtest_ar_, text, #actual, #expected)                     \
              .c_str())
 
-#define GTEST_TEST_NO_FATAL_FAILURE_(statement, fail)                          \
-  GTEST_AMBIGUOUS_ELSE_BLOCKER_                                                \
-  if (::testing::internal::AlwaysTrue()) {                                     \
-    ::testing::internal::HasNewFatalFailureHelper gtest_fatal_failure_checker; \
-    GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement);                 \
-    if (gtest_fatal_failure_checker.has_new_fatal_failure()) {                 \
-      goto GTEST_CONCAT_TOKEN_(gtest_label_testnofatal_, __LINE__);            \
-    }                                                                          \
-  } else                                                                       \
-    GTEST_CONCAT_TOKEN_(gtest_label_testnofatal_, __LINE__)                    \
-        : fail("Expected: " #statement                                         \
-               " doesn't generate new fatal "                                  \
-               "failures in the current thread.\n"                             \
+#define GTEST_TEST_NO_FATAL_FAILURE_(statement, fail)               \
+  GTEST_AMBIGUOUS_ELSE_BLOCKER_                                     \
+  if (::testing::internal::AlwaysTrue()) {                          \
+    const ::testing::internal::HasNewFatalFailureHelper             \
+        gtest_fatal_failure_checker;                                \
+    GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement);      \
+    if (gtest_fatal_failure_checker.has_new_fatal_failure()) {      \
+      goto GTEST_CONCAT_TOKEN_(gtest_label_testnofatal_, __LINE__); \
+    }                                                               \
+  } else /* NOLINT */                                               \
+    GTEST_CONCAT_TOKEN_(gtest_label_testnofatal_, __LINE__)         \
+        : fail("Expected: " #statement                              \
+               " doesn't generate new fatal "                       \
+               "failures in the current thread.\n"                  \
                "  Actual: it does.")
 
 // Expands to the name of the class that implements the given test.
@@ -1551,7 +1498,7 @@ class NeverThrown {
                                                                                \
    private:                                                                    \
     void TestBody() override;                                                  \
-    static ::testing::TestInfo* const test_info_ GTEST_ATTRIBUTE_UNUSED_;      \
+    [[maybe_unused]] static ::testing::TestInfo* const test_info_;             \
   };                                                                           \
                                                                                \
   ::testing::TestInfo* const GTEST_TEST_CLASS_NAME_(test_suite_name,           \

googletest/include/gtest/internal/gtest-param-util.h

@@ -39,11 +39,16 @@
 #include <ctype.h>
 
 #include <cassert>
+#include <functional>
 #include <iterator>
+#include <map>
 #include <memory>
+#include <ostream>
 #include <set>
+#include <string>
 #include <tuple>
 #include <type_traits>
+#include <unordered_map>
 #include <utility>
 #include <vector>
 
@@ -82,7 +87,7 @@ namespace internal {
 // TEST_P macro is used to define two tests with the same name
 // but in different namespaces.
 GTEST_API_ void ReportInvalidTestSuiteType(const char* test_suite_name,
-                                           CodeLocation code_location);
+                                           const CodeLocation& code_location);
 
 template <typename>
 class ParamGeneratorInterface;
@@ -94,7 +99,7 @@ class ParamGenerator;
 template <typename T>
 class ParamIteratorInterface {
  public:
-  virtual ~ParamIteratorInterface() {}
+  virtual ~ParamIteratorInterface() = default;
   // A pointer to the base generator instance.
   // Used only for the purposes of iterator comparison
   // to make sure that two iterators belong to the same generator.
@@ -168,7 +173,7 @@ class ParamGeneratorInterface {
  public:
   typedef T ParamType;
 
-  virtual ~ParamGeneratorInterface() {}
+  virtual ~ParamGeneratorInterface() = default;
 
   // Generator interface definition
   virtual ParamIteratorInterface<T>* Begin() const = 0;
@@ -212,7 +217,7 @@ class RangeGenerator : public ParamGeneratorInterface<T> {
         end_(end),
         step_(step),
         end_index_(CalculateEndIndex(begin, end, step)) {}
-  ~RangeGenerator() override {}
+  ~RangeGenerator() override = default;
 
   ParamIteratorInterface<T>* Begin() const override {
     return new Iterator(this, begin_, 0, step_);
@@ -227,7 +232,7 @@ class RangeGenerator : public ParamGeneratorInterface<T> {
     Iterator(const ParamGeneratorInterface<T>* base, T value, int index,
              IncrementT step)
         : base_(base), value_(value), index_(index), step_(step) {}
-    ~Iterator() override {}
+    ~Iterator() override = default;
 
     const ParamGeneratorInterface<T>* BaseGenerator() const override {
       return base_;
@@ -296,7 +301,7 @@ class ValuesInIteratorRangeGenerator : public ParamGeneratorInterface<T> {
   template <typename ForwardIterator>
   ValuesInIteratorRangeGenerator(ForwardIterator begin, ForwardIterator end)
       : container_(begin, end) {}
-  ~ValuesInIteratorRangeGenerator() override {}
+  ~ValuesInIteratorRangeGenerator() override = default;
 
   ParamIteratorInterface<T>* Begin() const override {
     return new Iterator(this, container_.begin());
@@ -313,7 +318,7 @@ class ValuesInIteratorRangeGenerator : public ParamGeneratorInterface<T> {
     Iterator(const ParamGeneratorInterface<T>* base,
              typename ContainerType::const_iterator iterator)
         : base_(base), iterator_(iterator) {}
-    ~Iterator() override {}
+    ~Iterator() override = default;
 
     const ParamGeneratorInterface<T>* BaseGenerator() const override {
       return base_;
@@ -376,9 +381,7 @@ class ValuesInIteratorRangeGenerator : public ParamGeneratorInterface<T> {
 // integer test parameter index.
 template <class ParamType>
 std::string DefaultParamName(const TestParamInfo<ParamType>& info) {
-  Message name_stream;
-  name_stream << info.index;
-  return name_stream.GetString();
+  return std::to_string(info.index);
 }
 
 template <typename T = int>
@@ -417,7 +420,7 @@ class ParameterizedTestFactory : public TestFactoryBase {
 template <class ParamType>
 class TestMetaFactoryBase {
  public:
-  virtual ~TestMetaFactoryBase() {}
+  virtual ~TestMetaFactoryBase() = default;
 
   virtual TestFactoryBase* CreateTestFactory(ParamType parameter) = 0;
 };
@@ -436,7 +439,7 @@ class TestMetaFactory
  public:
   using ParamType = typename TestSuite::ParamType;
 
-  TestMetaFactory() {}
+  TestMetaFactory() = default;
 
   TestFactoryBase* CreateTestFactory(ParamType parameter) override {
     return new ParameterizedTestFactory<TestSuite>(parameter);
@@ -459,7 +462,7 @@ class TestMetaFactory
 // and calls RegisterTests() on each of them when asked.
 class ParameterizedTestSuiteInfoBase {
  public:
-  virtual ~ParameterizedTestSuiteInfoBase() {}
+  virtual ~ParameterizedTestSuiteInfoBase() = default;
 
   // Base part of test suite name for display purposes.
   virtual const std::string& GetTestSuiteName() const = 0;
@@ -510,9 +513,10 @@ class ParameterizedTestSuiteInfo : public ParameterizedTestSuiteInfoBase {
   typedef ParamGenerator<ParamType>(GeneratorCreationFunc)();
   using ParamNameGeneratorFunc = std::string(const TestParamInfo<ParamType>&);
 
-  explicit ParameterizedTestSuiteInfo(const char* name,
+  explicit ParameterizedTestSuiteInfo(std::string name,
                                       CodeLocation code_location)
-      : test_suite_name_(name), code_location_(code_location) {}
+      : test_suite_name_(std::move(name)),
+        code_location_(std::move(code_location)) {}
 
   // Test suite base name for display purposes.
   const std::string& GetTestSuiteName() const override {
@@ -526,20 +530,20 @@ class ParameterizedTestSuiteInfo : public ParameterizedTestSuiteInfoBase {
   // prefix). test_base_name is the name of an individual test without
   // parameter index. For the test SequenceA/FooTest.DoBar/1 FooTest is
   // test suite base name and DoBar is test base name.
-  void AddTestPattern(const char* test_suite_name, const char* test_base_name,
+  void AddTestPattern(const char*, const char* test_base_name,
                       TestMetaFactoryBase<ParamType>* meta_factory,
                       CodeLocation code_location) {
-    tests_.push_back(std::shared_ptr<TestInfo>(new TestInfo(
-        test_suite_name, test_base_name, meta_factory, code_location)));
+    tests_.emplace_back(
+        new TestInfo(test_base_name, meta_factory, std::move(code_location)));
   }
   // INSTANTIATE_TEST_SUITE_P macro uses AddGenerator() to record information
   // about a generator.
-  int AddTestSuiteInstantiation(const std::string& instantiation_name,
+  int AddTestSuiteInstantiation(std::string instantiation_name,
                                 GeneratorCreationFunc* func,
                                 ParamNameGeneratorFunc* name_func,
                                 const char* file, int line) {
-    instantiations_.push_back(
-        InstantiationInfo(instantiation_name, func, name_func, file, line));
+    instantiations_.emplace_back(std::move(instantiation_name), func, name_func,
+                                 file, line);
     return 0;  // Return value used only to run this method in namespace scope.
   }
   // UnitTest class invokes this method to register tests in this test suite
@@ -550,60 +554,61 @@ class ParameterizedTestSuiteInfo : public ParameterizedTestSuiteInfoBase {
   void RegisterTests() override {
     bool generated_instantiations = false;
 
-    for (typename TestInfoContainer::iterator test_it = tests_.begin();
-         test_it != tests_.end(); ++test_it) {
-      std::shared_ptr<TestInfo> test_info = *test_it;
-      for (typename InstantiationContainer::iterator gen_it =
-               instantiations_.begin();
-           gen_it != instantiations_.end(); ++gen_it) {
-        const std::string& instantiation_name = gen_it->name;
-        ParamGenerator<ParamType> generator((*gen_it->generator)());
-        ParamNameGeneratorFunc* name_func = gen_it->name_func;
-        const char* file = gen_it->file;
-        int line = gen_it->line;
+    std::string test_suite_name;
+    std::string test_name;
+    for (const std::shared_ptr<TestInfo>& test_info : tests_) {
+      for (const InstantiationInfo& instantiation : instantiations_) {
+        const std::string& instantiation_name = instantiation.name;
+        ParamGenerator<ParamType> generator((*instantiation.generator)());
+        ParamNameGeneratorFunc* name_func = instantiation.name_func;
+        const char* file = instantiation.file;
+        int line = instantiation.line;
 
-        std::string test_suite_name;
         if (!instantiation_name.empty())
           test_suite_name = instantiation_name + "/";
-        test_suite_name += test_info->test_suite_base_name;
+        else
+          test_suite_name.clear();
+        test_suite_name += test_suite_name_;
 
         size_t i = 0;
         std::set<std::string> test_param_names;
-        for (typename ParamGenerator<ParamType>::iterator param_it =
-                 generator.begin();
-             param_it != generator.end(); ++param_it, ++i) {
+        for (const auto& param : generator) {
           generated_instantiations = true;
 
-          Message test_name_stream;
+          test_name.clear();
 
           std::string param_name =
-              name_func(TestParamInfo<ParamType>(*param_it, i));
+              name_func(TestParamInfo<ParamType>(param, i));
 
           GTEST_CHECK_(IsValidParamName(param_name))
               << "Parameterized test name '" << param_name
-              << "' is invalid, in " << file << " line " << line << std::endl;
+              << "' is invalid (contains spaces, dashes, or any "
+                 "non-alphanumeric characters other than underscores), in "
+              << file << " line " << line << "" << std::endl;
 
           GTEST_CHECK_(test_param_names.count(param_name) == 0)
               << "Duplicate parameterized test name '" << param_name << "', in "
               << file << " line " << line << std::endl;
 
-          test_param_names.insert(param_name);
-
           if (!test_info->test_base_name.empty()) {
-            test_name_stream << test_info->test_base_name << "/";
+            test_name.append(test_info->test_base_name).append("/");
           }
-          test_name_stream << param_name;
+          test_name += param_name;
+
+          test_param_names.insert(std::move(param_name));
+
           MakeAndRegisterTestInfo(
-              test_suite_name.c_str(), test_name_stream.GetString().c_str(),
+              test_suite_name, test_name.c_str(),
               nullptr,  // No type parameter.
-              PrintToString(*param_it).c_str(), test_info->code_location,
+              PrintToString(param).c_str(), test_info->code_location,
               GetTestSuiteTypeId(),
               SuiteApiResolver<TestSuite>::GetSetUpCaseOrSuite(file, line),
               SuiteApiResolver<TestSuite>::GetTearDownCaseOrSuite(file, line),
-              test_info->test_meta_factory->CreateTestFactory(*param_it));
-        }  // for param_it
-      }    // for gen_it
-    }      // for test_it
+              test_info->test_meta_factory->CreateTestFactory(param));
+          ++i;
+        }  // for param
+      }  // for instantiation
+    }  // for test_info
 
     if (!generated_instantiations) {
       // There are no generaotrs, or they all generate nothing ...
@@ -616,15 +621,13 @@ class ParameterizedTestSuiteInfo : public ParameterizedTestSuiteInfoBase {
   // LocalTestInfo structure keeps information about a single test registered
   // with TEST_P macro.
   struct TestInfo {
-    TestInfo(const char* a_test_suite_base_name, const char* a_test_base_name,
+    TestInfo(const char* a_test_base_name,
              TestMetaFactoryBase<ParamType>* a_test_meta_factory,
              CodeLocation a_code_location)
-        : test_suite_base_name(a_test_suite_base_name),
-          test_base_name(a_test_base_name),
+        : test_base_name(a_test_base_name),
           test_meta_factory(a_test_meta_factory),
-          code_location(a_code_location) {}
+          code_location(std::move(a_code_location)) {}
 
-    const std::string test_suite_base_name;
     const std::string test_base_name;
     const std::unique_ptr<TestMetaFactoryBase<ParamType>> test_meta_factory;
     const CodeLocation code_location;
@@ -634,11 +637,10 @@ class ParameterizedTestSuiteInfo : public ParameterizedTestSuiteInfoBase {
   //  <Instantiation name, Sequence generator creation function,
   //     Name generator function, Source file, Source line>
   struct InstantiationInfo {
-    InstantiationInfo(const std::string& name_in,
-                      GeneratorCreationFunc* generator_in,
+    InstantiationInfo(std::string name_in, GeneratorCreationFunc* generator_in,
                       ParamNameGeneratorFunc* name_func_in, const char* file_in,
                       int line_in)
-        : name(name_in),
+        : name(std::move(name_in)),
           generator(generator_in),
           name_func(name_func_in),
           file(file_in),
@@ -688,7 +690,7 @@ using ParameterizedTestCaseInfo = ParameterizedTestSuiteInfo<TestCase>;
 // ParameterizedTestSuiteInfo descriptors.
 class ParameterizedTestSuiteRegistry {
  public:
-  ParameterizedTestSuiteRegistry() {}
+  ParameterizedTestSuiteRegistry() = default;
   ~ParameterizedTestSuiteRegistry() {
     for (auto& test_suite_info : test_suite_infos_) {
       delete test_suite_info;
@@ -699,29 +701,32 @@ class ParameterizedTestSuiteRegistry {
   // tests and instantiations of a particular test suite.
   template <class TestSuite>
   ParameterizedTestSuiteInfo<TestSuite>* GetTestSuitePatternHolder(
-      const char* test_suite_name, CodeLocation code_location) {
+      std::string test_suite_name, CodeLocation code_location) {
     ParameterizedTestSuiteInfo<TestSuite>* typed_test_info = nullptr;
-    for (auto& test_suite_info : test_suite_infos_) {
-      if (test_suite_info->GetTestSuiteName() == test_suite_name) {
-        if (test_suite_info->GetTestSuiteTypeId() != GetTypeId<TestSuite>()) {
-          // Complain about incorrect usage of Google Test facilities
-          // and terminate the program since we cannot guaranty correct
-          // test suite setup and tear-down in this case.
-          ReportInvalidTestSuiteType(test_suite_name, code_location);
-          posix::Abort();
-        } else {
-          // At this point we are sure that the object we found is of the same
-          // type we are looking for, so we downcast it to that type
-          // without further checks.
-          typed_test_info = CheckedDowncastToActualType<
-              ParameterizedTestSuiteInfo<TestSuite>>(test_suite_info);
-        }
-        break;
+
+    auto item_it = suite_name_to_info_index_.find(test_suite_name);
+    if (item_it != suite_name_to_info_index_.end()) {
+      auto* test_suite_info = test_suite_infos_[item_it->second];
+      if (test_suite_info->GetTestSuiteTypeId() != GetTypeId<TestSuite>()) {
+        // Complain about incorrect usage of Google Test facilities
+        // and terminate the program since we cannot guaranty correct
+        // test suite setup and tear-down in this case.
+        ReportInvalidTestSuiteType(test_suite_name.c_str(), code_location);
+        posix::Abort();
+      } else {
+        // At this point we are sure that the object we found is of the same
+        // type we are looking for, so we downcast it to that type
+        // without further checks.
+        typed_test_info =
+            CheckedDowncastToActualType<ParameterizedTestSuiteInfo<TestSuite>>(
+                test_suite_info);
       }
     }
     if (typed_test_info == nullptr) {
       typed_test_info = new ParameterizedTestSuiteInfo<TestSuite>(
-          test_suite_name, code_location);
+          test_suite_name, std::move(code_location));
+      suite_name_to_info_index_.emplace(std::move(test_suite_name),
+                                        test_suite_infos_.size());
       test_suite_infos_.push_back(typed_test_info);
     }
     return typed_test_info;
@@ -735,8 +740,9 @@ class ParameterizedTestSuiteRegistry {
 #ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
   template <class TestCase>
   ParameterizedTestCaseInfo<TestCase>* GetTestCasePatternHolder(
-      const char* test_case_name, CodeLocation code_location) {
-    return GetTestSuitePatternHolder<TestCase>(test_case_name, code_location);
+      std::string test_case_name, CodeLocation code_location) {
+    return GetTestSuitePatternHolder<TestCase>(std::move(test_case_name),
+                                               std::move(code_location));
   }
 
 #endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
@@ -745,6 +751,7 @@ class ParameterizedTestSuiteRegistry {
   using TestSuiteInfoContainer = ::std::vector<ParameterizedTestSuiteInfoBase*>;
 
   TestSuiteInfoContainer test_suite_infos_;
+  ::std::unordered_map<std::string, size_t> suite_name_to_info_index_;
 
   ParameterizedTestSuiteRegistry(const ParameterizedTestSuiteRegistry&) =
       delete;
@@ -771,7 +778,7 @@ class TypeParameterizedTestSuiteRegistry {
  private:
   struct TypeParameterizedTestSuiteInfo {
     explicit TypeParameterizedTestSuiteInfo(CodeLocation c)
-        : code_location(c), instantiated(false) {}
+        : code_location(std::move(c)), instantiated(false) {}
 
     CodeLocation code_location;
     bool instantiated;
@@ -791,10 +798,7 @@ internal::ParamGenerator<typename Container::value_type> ValuesIn(
 namespace internal {
 // Used in the Values() function to provide polymorphic capabilities.
 
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4100)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4100)
 
 template <typename... Ts>
 class ValueArray {
@@ -803,21 +807,19 @@ class ValueArray {
 
   template <typename T>
   operator ParamGenerator<T>() const {  // NOLINT
-    return ValuesIn(MakeVector<T>(MakeIndexSequence<sizeof...(Ts)>()));
+    return ValuesIn(MakeVector<T>(std::make_index_sequence<sizeof...(Ts)>()));
   }
 
  private:
   template <typename T, size_t... I>
-  std::vector<T> MakeVector(IndexSequence<I...>) const {
+  std::vector<T> MakeVector(std::index_sequence<I...>) const {
     return std::vector<T>{static_cast<T>(v_.template Get<I>())...};
   }
 
   FlatTuple<Ts...> v_;
 };
 
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
+GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4100
 
 template <typename... T>
 class CartesianProductGenerator
@@ -827,7 +829,7 @@ class CartesianProductGenerator
 
   CartesianProductGenerator(const std::tuple<ParamGenerator<T>...>& g)
       : generators_(g) {}
-  ~CartesianProductGenerator() override {}
+  ~CartesianProductGenerator() override = default;
 
   ParamIteratorInterface<ParamType>* Begin() const override {
     return new Iterator(this, generators_, false);
@@ -840,7 +842,7 @@ class CartesianProductGenerator
   template <class I>
   class IteratorImpl;
   template <size_t... I>
-  class IteratorImpl<IndexSequence<I...>>
+  class IteratorImpl<std::index_sequence<I...>>
       : public ParamIteratorInterface<ParamType> {
    public:
     IteratorImpl(const ParamGeneratorInterface<ParamType>* base,
@@ -852,7 +854,7 @@ class CartesianProductGenerator
           current_(is_end ? end_ : begin_) {
       ComputeCurrentValue();
     }
-    ~IteratorImpl() override {}
+    ~IteratorImpl() override = default;
 
     const ParamGeneratorInterface<ParamType>* BaseGenerator() const override {
       return base_;
@@ -931,7 +933,7 @@ class CartesianProductGenerator
     std::shared_ptr<ParamType> current_value_;
   };
 
-  using Iterator = IteratorImpl<typename MakeIndexSequence<sizeof...(T)>::type>;
+  using Iterator = IteratorImpl<std::make_index_sequence<sizeof...(T)>>;
 
   std::tuple<ParamGenerator<T>...> generators_;
 };
@@ -950,6 +952,112 @@ class CartesianProductHolder {
   std::tuple<Gen...> generators_;
 };
 
+template <typename From, typename To, typename Func>
+class ParamGeneratorConverter : public ParamGeneratorInterface<To> {
+ public:
+  ParamGeneratorConverter(ParamGenerator<From> gen, Func converter)  // NOLINT
+      : generator_(std::move(gen)), converter_(std::move(converter)) {}
+
+  ParamIteratorInterface<To>* Begin() const override {
+    return new Iterator(this, generator_.begin(), generator_.end());
+  }
+  ParamIteratorInterface<To>* End() const override {
+    return new Iterator(this, generator_.end(), generator_.end());
+  }
+
+  // Returns the std::function wrapping the user-supplied converter callable. It
+  // is used by the iterator (see class Iterator below) to convert the object
+  // (of type FROM) returned by the ParamGenerator to an object of a type that
+  // can be static_cast to type TO.
+  const Func& TypeConverter() const { return converter_; }
+
+ private:
+  class Iterator : public ParamIteratorInterface<To> {
+   public:
+    Iterator(const ParamGeneratorConverter* base, ParamIterator<From> it,
+             ParamIterator<From> end)
+        : base_(base), it_(it), end_(end) {
+      if (it_ != end_)
+        value_ =
+            std::make_shared<To>(static_cast<To>(base->TypeConverter()(*it_)));
+    }
+    ~Iterator() override = default;
+
+    const ParamGeneratorInterface<To>* BaseGenerator() const override {
+      return base_;
+    }
+    void Advance() override {
+      ++it_;
+      if (it_ != end_)
+        value_ =
+            std::make_shared<To>(static_cast<To>(base_->TypeConverter()(*it_)));
+    }
+    ParamIteratorInterface<To>* Clone() const override {
+      return new Iterator(*this);
+    }
+    const To* Current() const override { return value_.get(); }
+    bool Equals(const ParamIteratorInterface<To>& other) const override {
+      // Having the same base generator guarantees that the other
+      // iterator is of the same type and we can downcast.
+      GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
+          << "The program attempted to compare iterators "
+          << "from different generators." << std::endl;
+      const ParamIterator<From> other_it =
+          CheckedDowncastToActualType<const Iterator>(&other)->it_;
+      return it_ == other_it;
+    }
+
+   private:
+    Iterator(const Iterator& other) = default;
+
+    const ParamGeneratorConverter* const base_;
+    ParamIterator<From> it_;
+    ParamIterator<From> end_;
+    std::shared_ptr<To> value_;
+  };  // class ParamGeneratorConverter::Iterator
+
+  ParamGenerator<From> generator_;
+  Func converter_;
+};  // class ParamGeneratorConverter
+
+template <class GeneratedT,
+          typename StdFunction =
+              std::function<const GeneratedT&(const GeneratedT&)>>
+class ParamConverterGenerator {
+ public:
+  ParamConverterGenerator(ParamGenerator<GeneratedT> g)  // NOLINT
+      : generator_(std::move(g)), converter_(Identity) {}
+
+  ParamConverterGenerator(ParamGenerator<GeneratedT> g, StdFunction converter)
+      : generator_(std::move(g)), converter_(std::move(converter)) {}
+
+  template <typename T>
+  operator ParamGenerator<T>() const {  // NOLINT
+    return ParamGenerator<T>(
+        new ParamGeneratorConverter<GeneratedT, T, StdFunction>(generator_,
+                                                                converter_));
+  }
+
+ private:
+  static const GeneratedT& Identity(const GeneratedT& v) { return v; }
+
+  ParamGenerator<GeneratedT> generator_;
+  StdFunction converter_;
+};
+
+// Template to determine the param type of a single-param std::function.
+template <typename T>
+struct FuncSingleParamType;
+template <typename R, typename P>
+struct FuncSingleParamType<std::function<R(P)>> {
+  using type = std::remove_cv_t<std::remove_reference_t<P>>;
+};
+
+template <typename T>
+struct IsSingleArgStdFunction : public std::false_type {};
+template <typename R, typename P>
+struct IsSingleArgStdFunction<std::function<R(P)>> : public std::true_type {};
+
 }  // namespace internal
 }  // namespace testing
 

googletest/include/gtest/internal/gtest-port-arch.h

@@ -56,6 +56,8 @@
 #elif WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_TV_TITLE)
 #define GTEST_OS_WINDOWS_PHONE 1
 #define GTEST_OS_WINDOWS_TV_TITLE 1
+#elif WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_GAMES)
+#define GTEST_OS_WINDOWS_GAMES 1
 #else
 // WINAPI_FAMILY defined but no known partition matched.
 // Default to desktop.
@@ -111,6 +113,12 @@
 #define GTEST_OS_ESP32 1
 #elif defined(__XTENSA__)
 #define GTEST_OS_XTENSA 1
+#elif defined(__hexagon__)
+#define GTEST_OS_QURT 1
+#elif defined(CPU_QN9090) || defined(CPU_QN9090HN)
+#define GTEST_OS_NXP_QN9090 1
+#elif defined(NRF52)
+#define GTEST_OS_NRF52 1
 #endif  // __CYGWIN__
 
 #endif  // GOOGLETEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_ARCH_H_

googletest/include/gtest/internal/gtest-string.h

@@ -51,6 +51,7 @@
 #include <string.h>
 
 #include <cstdint>
+#include <sstream>
 #include <string>
 
 #include "gtest/internal/gtest-port.h"
@@ -72,7 +73,7 @@ class GTEST_API_ String {
   // memory using malloc().
   static const char* CloneCString(const char* c_str);
 
-#if GTEST_OS_WINDOWS_MOBILE
+#ifdef GTEST_OS_WINDOWS_MOBILE
   // Windows CE does not have the 'ANSI' versions of Win32 APIs. To be
   // able to pass strings to Win32 APIs on CE we need to convert them
   // to 'Unicode', UTF-16.

googletest/include/gtest/internal/gtest-type-util.h

@@ -37,6 +37,10 @@
 #ifndef GOOGLETEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
 #define GOOGLETEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
 
+#include <string>
+#include <type_traits>
+#include <typeinfo>
+
 #include "gtest/internal/gtest-port.h"
 
 // #ifdef __GNUC__ is too general here.  It is possible to use gcc without using
@@ -63,6 +67,22 @@ inline std::string CanonicalizeForStdLibVersioning(std::string s) {
       s.erase(strlen("std"), end - strlen("std"));
     }
   }
+
+  // Strip redundant spaces in typename to match MSVC
+  // For example, std::pair<int, bool> -> std::pair<int,bool>
+  static const char to_search[] = ", ";
+  const char replace_char = ',';
+  size_t pos = 0;
+  while (true) {
+    // Get the next occurrence from the current position
+    pos = s.find(to_search, pos);
+    if (pos == std::string::npos) {
+      break;
+    }
+    // Replace this occurrence of substring
+    s.replace(pos, strlen(to_search), 1, replace_char);
+    ++pos;
+  }
   return s;
 }
 
@@ -81,6 +101,20 @@ inline std::string GetTypeName(const std::type_info& type) {
   const std::string name_str(status == 0 ? readable_name : name);
   free(readable_name);
   return CanonicalizeForStdLibVersioning(name_str);
+#elif defined(_MSC_VER)
+  // Strip struct and class due to differences between
+  // MSVC and other compilers. std::pair<int,bool> is printed as
+  // "struct std::pair<int,bool>" when using MSVC vs "std::pair<int, bool>" with
+  // other compilers.
+  std::string s = name;
+  // Only strip the leading "struct " and "class ", so uses rfind == 0 to
+  // ensure that
+  if (s.rfind("struct ", 0) == 0) {
+    s = s.substr(strlen("struct "));
+  } else if (s.rfind("class ", 0) == 0) {
+    s = s.substr(strlen("class "));
+  }
+  return s;
 #else
   return name;
 #endif  // GTEST_HAS_CXXABI_H_ || __HP_aCC