Switch to referenceful lock holder for Abseil compatibility

PiperOrigin-RevId: 831156684
Change-Id: I8a8b017ec2fc318a65f57e04428c030c707ee682

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"])
@@ -151,10 +153,7 @@ cc_library(
             "@abseil-cpp//absl/flags:reflection",
             "@abseil-cpp//absl/flags:usage",
             "@abseil-cpp//absl/strings",
-            "@abseil-cpp//absl/types:any",
-            "@abseil-cpp//absl/types:optional",
-            "@abseil-cpp//absl/types:variant",
-            "@re2//:re2",
+            "@re2",
         ],
         "//conditions:default": [],
     }) + select({
@@ -164,7 +163,6 @@ cc_library(
         # Otherwise, builds targeting Fuchsia would fail to compile.
         ":fuchsia": [
             "@fuchsia_sdk//pkg/fdio",
-            "@fuchsia_sdk//pkg/syslog",
             "@fuchsia_sdk//pkg/zx",
         ],
         "//conditions:default": [],
@@ -174,8 +172,8 @@ cc_library(
 # `gtest`, but testonly. See guidance on `gtest` for when to use this.
 alias(
     name = "gtest_for_library",
-    actual = ":gtest",
     testonly = True,
+    actual = ":gtest",
 )
 
 # Implements main() for tests using gtest. Prefer to depend on `gtest` as well

MODULE.bazel

@@ -41,7 +41,7 @@ module(
 
 bazel_dep(
     name = "abseil-cpp",
-    version = "20250127.1",
+    version = "20250814.0",
 )
 bazel_dep(
     name = "platforms",
@@ -52,6 +52,11 @@ bazel_dep(
     version = "2024-07-02.bcr.1",
 )
 
+bazel_dep(
+    name = "rules_cc",
+    version = "0.2.8"
+)
+
 bazel_dep(
     name = "rules_python",
     version = "1.3.0",

README.md

@@ -2,30 +2,19 @@
 
 ### 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).
-We do publish occasional semantic versions, tagged with
-`v${major}.${minor}.${patch}` (e.g. `v1.16.0`).
-
 #### 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 1.16.0
+#### Release 1.17.0
 
-[Release 1.16.0](https://github.com/google/googletest/releases/tag/v1.16.0) is
+[Release 1.17.0](https://github.com/google/googletest/releases/tag/v1.17.0) is
 now available.
 
-The 1.16.x branch requires at least C++14.
-
-The 1.16.x branch will be the last to support C++14. Future development will
-[require at least C++17](https://opensource.google/documentation/policies/cplusplus-support#c_language_standard).
+The 1.17.x branch
+[requires at least C++17](https://opensource.google/documentation/policies/cplusplus-support#c_language_standard).
 
 #### Continuous Integration
 

WORKSPACE

@@ -45,12 +45,6 @@ http_archive(
 load("@rules_python//python:repositories.bzl", "py_repositories")
 py_repositories()
 
-http_archive(
-  name = "bazel_skylib",
-  sha256 = "cd55a062e763b9349921f0f5db8c3933288dc8ba4f76dd9416aac68acee3cb94",
-  urls = ["https://github.com/bazelbuild/bazel-skylib/releases/download/1.5.0/bazel-skylib-1.5.0.tar.gz"],
-)
-
 http_archive(
     name = "platforms",
     urls = [
@@ -59,3 +53,9 @@ http_archive(
     ],
     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()

ci/linux-presubmit.sh

@@ -31,15 +31,23 @@
 
 set -euox pipefail
 
-readonly LINUX_LATEST_CONTAINER="gcr.io/google.com/absl-177019/linux_hybrid-latest:20241218"
-readonly LINUX_GCC_FLOOR_CONTAINER="gcr.io/google.com/absl-177019/linux_gcc-floor:20250205"
+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
 
+# 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
+
 if [[ -z ${STD:-} ]]; then
-  STD="c++17 c++20"
+  STD="c++17 c++20 c++23"
 fi
 
 # Test CMake + GCC
@@ -93,18 +101,21 @@ time docker run \
   --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="-Wundef" \
-      --copt="-Wno-error=pragmas" \
+      --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
@@ -115,18 +126,21 @@ for std in ${STD}; do
       --rm \
       --env="CC=/usr/local/bin/gcc" \
       --env="BAZEL_CXXOPTS=-std=${std}" \
+      ${DOCKER_EXTRA_ARGS:-} \
       ${LINUX_LATEST_CONTAINER} \
+      /bin/bash --login -c "
         /usr/local/bin/bazel test ... \
-        --copt="-Wall" \
-        --copt="-Werror" \
-        --copt="-Wuninitialized" \
-        --copt="-Wundef" \
-        --define="absl=${absl}" \
+          --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
+          --test_output=errors \
+          ${BAZEL_EXTRA_ARGS:-}"
   done
 done
 
@@ -139,19 +153,22 @@ for std in ${STD}; do
       --rm \
       --env="CC=/opt/llvm/clang/bin/clang" \
       --env="BAZEL_CXXOPTS=-std=${std}" \
+      ${DOCKER_EXTRA_ARGS:-} \
       ${LINUX_LATEST_CONTAINER} \
+      /bin/bash --login -c "
         /usr/local/bin/bazel test ... \
-        --copt="--gcc-toolchain=/usr/local" \
-        --copt="-Wall" \
-        --copt="-Werror" \
-        --copt="-Wuninitialized" \
-        --copt="-Wundef" \
-        --define="absl=${absl}" \
+          --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" \
+          --linkopt=\"--gcc-toolchain=/usr/local\" \
           --show_timestamps \
-        --test_output=errors
+          --test_output=errors \
+          ${BAZEL_EXTRA_ARGS:-}"
   done
 done

ci/macos-presubmit.sh

@@ -56,7 +56,7 @@ done
 # Test the Bazel build
 
 # If we are running on Kokoro, check for a versioned Bazel binary.
-KOKORO_GFILE_BAZEL_BIN="bazel-8.0.0-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}
@@ -64,6 +64,12 @@ 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 ... \
@@ -76,5 +82,6 @@ for absl in 0 1; do
     --features=external_include_paths \
     --keep_going \
     --show_timestamps \
-    --test_output=errors
+    --test_output=errors \
+    ${BAZEL_EXTRA_ARGS:-}
 done

ci/windows-presubmit.bat

@@ -1,6 +1,6 @@
 SETLOCAL ENABLEDELAYEDEXPANSION
 
-SET BAZEL_EXE=%KOKORO_GFILE_DIR%\bazel-8.0.0-windows-x86_64.exe
+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
@@ -48,6 +48,14 @@ RMDIR /S /Q %CMAKE_BUILD_PATH%
 :: --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 ^
@@ -58,7 +66,8 @@ SET BAZEL_VS=C:\Program Files\Microsoft Visual Studio\2022\Community
   --enable_bzlmod=true ^
   --keep_going ^
   --test_output=errors ^
-  --test_tag_filters=-no_test_msvc2017
+  --test_tag_filters=-no_test_msvc2017 ^
+  %VENDOR_FLAG%
 IF %errorlevel% neq 0 EXIT /B 1
 
 :: C++20
@@ -71,5 +80,6 @@ IF %errorlevel% neq 0 EXIT /B 1
   --enable_bzlmod=true ^
   --keep_going ^
   --test_output=errors ^
-  --test_tag_filters=-no_test_msvc2017
+  --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">

docs/advanced.md

@@ -349,7 +349,8 @@ void AbslStringify(Sink& sink, EnumWithStringify e) {
 {: .callout .note}
 Note: `AbslStringify()` utilizes a generic "sink" buffer to construct its
 string. For more information about supported operations on `AbslStringify()`'s
-sink, see go/abslstringify.
+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
@@ -403,7 +404,8 @@ EXPECT_TRUE(IsCorrectPointIntVector(point_ints))
 ```
 
 For more details regarding `AbslStringify()` and its integration with other
-libraries, see go/abslstringify.
+libraries, see
+[the documentation](https://abseil.io/docs/cpp/guides/abslstringify).
 
 ## Regular Expression Syntax
 
@@ -1448,17 +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
@@ -1471,10 +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:
@@ -1943,6 +1944,21 @@ 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

docs/gmock_cheat_sheet.md

@@ -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

docs/gmock_cook_book.md

@@ -900,15 +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("foo", &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"));

docs/quickstart-bazel.md

@@ -9,7 +9,7 @@ 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++14.
+*   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.
 
@@ -48,7 +48,7 @@ with the following content:
 
 # Choose the most recent version available at
 # https://registry.bazel.build/modules/googletest
-bazel_dep(name = "googletest", version = "1.15.2")
+bazel_dep(name = "googletest", version = "1.17.0")
 ```
 
 Now you're ready to build C++ code that uses GoogleTest.
@@ -99,16 +99,16 @@ 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++14`
-to ensure that GoogleTest is compiled as C++14 instead of the compiler's default
-setting (which could be C++11). For MSVC, the equivalent would be
-`--cxxopt=/std:c++14`. See [Supported Platforms](platforms.md) for more details
-on supported language versions.
+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>$ bazel test --cxxopt=-std=c++14 --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++14.
+*   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
@@ -52,8 +52,8 @@ 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++14
-set(CMAKE_CXX_STANDARD 14)
+# GoogleTest requires at least C++17
+set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 include(FetchContent)

docs/reference/actions.md

@@ -48,8 +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/matchers.md

@@ -49,6 +49,7 @@ Matcher                     | Description
 | `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. |
 
@@ -111,6 +112,33 @@ 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)`

docs/reference/testing.md

@@ -203,7 +203,7 @@ class MyParam {
 
 INSTANTIATE_TEST_SUITE_P(MyInstantiation, MyTestSuite,
     ConvertGenerator(Combine(Values(1, 1.2), Bool()),
-        [](const std::tuple<int i, bool>& t){
+        [](const std::tuple<int, bool>& t){
           const auto [i, b] = t;
           return MyParam(i, b);
         }));

googlemock/include/gmock/gmock-actions.h

@@ -1796,11 +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>
@@ -1866,6 +1879,13 @@ struct RethrowAction {
 //   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.
@@ -2031,10 +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);
 }

googlemock/include/gmock/gmock-matchers.h

@@ -258,7 +258,6 @@
 #include <algorithm>
 #include <cmath>
 #include <cstddef>
-#include <exception>
 #include <functional>
 #include <initializer_list>
 #include <ios>
@@ -268,12 +267,12 @@
 #include <ostream>  // NOLINT
 #include <sstream>
 #include <string>
+#include <tuple>
 #include <type_traits>
 #include <utility>
 #include <vector>
 
 #include "gmock/internal/gmock-internal-utils.h"
-#include "gmock/internal/gmock-port.h"
 #include "gmock/internal/gmock-pp.h"
 #include "gtest/gtest.h"
 
@@ -376,11 +375,16 @@ class MatcherCastImpl {
 
   // M can't be implicitly converted to Matcher<T>, so M isn't a polymorphic
   // matcher. It's a value of a type implicitly convertible to T. Use direct
-  // initialization to create a matcher.
+  // initialization or `ImplicitCastEqMatcher` to create a matcher.
   static Matcher<T> CastImpl(const M& value,
                              std::false_type /* convertible_to_matcher */,
                              std::true_type /* convertible_to_T */) {
-    return Matcher<T>(ImplicitCast_<T>(value));
+    using NoRefT = std::remove_cv_t<std::remove_reference_t<T>>;
+    if constexpr (std::is_same_v<M, NoRefT>) {
+      return Matcher<T>(value);
+    } else {
+      return ImplicitCastEqMatcher<NoRefT, std::decay_t<const M&>>(value);
+    }
   }
 
   // M can't be implicitly converted to either Matcher<T> or T. Attempt to use
@@ -391,11 +395,11 @@ class MatcherCastImpl {
   // latter calls bool operator==(const Lhs& lhs, const Rhs& rhs) in the end
   // which might be undefined even when Rhs is implicitly convertible to Lhs
   // (e.g. std::pair<const int, int> vs. std::pair<int, int>).
-  //
-  // We don't define this method inline as we need the declaration of Eq().
   static Matcher<T> CastImpl(const M& value,
                              std::false_type /* convertible_to_matcher */,
-                             std::false_type /* convertible_to_T */);
+                             std::false_type /* convertible_to_T */) {
+    return Eq(value);
+  }
 };
 
 // This more specialized version is used when MatcherCast()'s argument
@@ -1325,17 +1329,23 @@ class AllOfMatcherImpl : public MatcherInterface<const T&> {
     // However, if matcher doesn't provide one, this method uses matcher's
     // description.
     std::string all_match_result;
+    bool success = true;
     for (const Matcher<T>& matcher : matchers_) {
       StringMatchResultListener slistener;
       // Return explanation for first failed matcher.
       if (!matcher.MatchAndExplain(x, &slistener)) {
         const std::string explanation = slistener.str();
+        if (!success) {
+          // Already had a failure.
+          *listener << ", and ";
+        }
         if (!explanation.empty()) {
           *listener << explanation;
         } else {
           *listener << "which doesn't match (" << Describe(matcher) << ")";
         }
-        return false;
+        success = false;
+        continue;
       }
       // Keep track of explanations in case all matchers succeed.
       std::string explanation = slistener.str();
@@ -1352,8 +1362,10 @@ class AllOfMatcherImpl : public MatcherInterface<const T&> {
       }
     }
 
+    if (success) {
       *listener << all_match_result;
-    return true;
+    }
+    return success;
   }
 
  private:
@@ -3433,6 +3445,35 @@ auto UnpackStructImpl(const T& in, std::make_index_sequence<22>, char) {
   return std::tie(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u,
                   v);
 }
+
+template <typename T>
+auto UnpackStructImpl(const T& in, std::make_index_sequence<23>, char) {
+  const auto& [a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v,
+               w] = in;
+  return std::tie(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u,
+                  v, w);
+}
+template <typename T>
+auto UnpackStructImpl(const T& in, std::make_index_sequence<24>, char) {
+  const auto& [a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v,
+               w, x] = in;
+  return std::tie(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u,
+                  v, w, x);
+}
+template <typename T>
+auto UnpackStructImpl(const T& in, std::make_index_sequence<25>, char) {
+  const auto& [a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v,
+               w, x, y] = in;
+  return std::tie(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u,
+                  v, w, x, y);
+}
+template <typename T>
+auto UnpackStructImpl(const T& in, std::make_index_sequence<26>, char) {
+  const auto& [a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v,
+               w, x, y, z] = in;
+  return std::tie(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u,
+                  v, w, x, y, z);
+}
 #endif  // defined(__cpp_structured_bindings)
 
 template <size_t I, typename T>
@@ -4475,13 +4516,6 @@ inline Matcher<T> An() {
   return _;
 }
 
-template <typename T, typename M>
-Matcher<T> internal::MatcherCastImpl<T, M>::CastImpl(
-    const M& value, std::false_type /* convertible_to_matcher */,
-    std::false_type /* convertible_to_T */) {
-  return Eq(value);
-}
-
 // Creates a polymorphic matcher that matches any NULL pointer.
 inline PolymorphicMatcher<internal::IsNullMatcher> IsNull() {
   return MakePolymorphicMatcher(internal::IsNullMatcher());

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

@@ -1292,10 +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_);
@@ -1467,7 +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();
@@ -1530,7 +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);
@@ -1538,7 +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
@@ -1646,7 +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);

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

@@ -298,7 +298,7 @@ GTEST_API_ void Log(LogSeverity severity, const std::string& message,
 //
 class WithoutMatchers {
  private:
-  WithoutMatchers() {}
+  WithoutMatchers() = default;
   friend GTEST_API_ WithoutMatchers GetWithoutMatchers();
 };
 

googlemock/src/gmock-internal-utils.cc

@@ -156,7 +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.

googlemock/src/gmock-spec-builders.cc

@@ -212,7 +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;
@@ -293,7 +293,7 @@ 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/main/docs/"
@@ -318,7 +318,7 @@ UntypedFunctionMockerBase::~UntypedFunctionMockerBase() = default;
 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);
@@ -332,7 +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;
 }
@@ -345,7 +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.");
@@ -362,7 +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.");
@@ -436,9 +436,9 @@ 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;
 }
@@ -490,7 +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);
+    internal::MutexLock l(internal::g_gmock_mutex);
 
     int leaked_count = 0;
     for (StateMap::const_iterator it = states_.begin(); it != states_.end();
@@ -559,7 +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;
 }
 
@@ -590,7 +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));
 }
 
@@ -598,7 +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(
@@ -611,7 +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;
 }
 
@@ -620,7 +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);
 }
 
@@ -629,7 +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);
 }
@@ -679,7 +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);
 }
 
@@ -689,7 +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;

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

@@ -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.
@@ -1030,8 +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
@@ -1282,7 +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);
 }
@@ -1297,7 +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);
 }
@@ -1477,12 +1476,15 @@ TEST(DoAll, SupportsTypeErasedActions) {
   }
 }
 
-// A 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.
+// 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) {
-  // Simplest case: only one sub-action.
+  // Final action.
   struct CustomFinal final {
     operator Action<int()>() {  // NOLINT
       return Return(17);
@@ -1493,17 +1495,7 @@ TEST(DoAll, ConvertibleToOnceActionWithUserProvidedActionConversion) {
     }
   };
 
-  {
-    OnceAction<int()> action = DoAll(CustomFinal{});
-    EXPECT_EQ(17, std::move(action).Call());
-  }
-
-  {
-    OnceAction<int(int, char)> action = DoAll(CustomFinal{});
-    EXPECT_EQ(19, std::move(action).Call(0, 0));
-  }
-
-  // It should also work with multiple sub-actions.
+  // Sub-actions.
   struct CustomInitial final {
     operator Action<void()>() {  // NOLINT
       return [] {};
@@ -1527,7 +1519,7 @@ TEST(DoAll, ConvertibleToOnceActionWithUserProvidedActionConversion) {
 
 // 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)));
 }
@@ -1535,7 +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))));
 }
@@ -1551,7 +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"))));
@@ -1576,21 +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))));
 }
@@ -1598,14 +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);
@@ -1830,7 +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())));
@@ -1853,7 +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,
@@ -1872,9 +1864,8 @@ TEST(MockMethodTest, CanReturnMoveOnlyValue_Invoke) {
       [] { 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();
@@ -1896,7 +1887,7 @@ TEST(MockMethodTest, CanTakeMoveOnlyValue) {
   });
   // 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))

googlemock/test/gmock-function-mocker_test.cc

@@ -91,7 +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;

googlemock/test/gmock-internal-utils_test.cc

@@ -545,7 +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".
@@ -568,7 +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

@@ -770,7 +770,8 @@ 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, the matcher text is
@@ -1625,7 +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))));
 }
@@ -1681,13 +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)))));
 }

googlemock/test/gmock-matchers-comparisons_test.cc

@@ -622,15 +622,42 @@ 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) {
+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);
-  // Verify that the matcher holds a reference to n, not to its temporary copy.
-  EXPECT_TRUE(m.Matches(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 {
@@ -2362,22 +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));

googlemock/test/gmock-matchers-containers_test.cc

@@ -217,7 +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));
 }
 
@@ -254,7 +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));
 
@@ -2796,7 +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))));
 }

googlemock/test/gmock-matchers-misc_test.cc

@@ -79,7 +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));
@@ -202,7 +202,7 @@ 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());
@@ -1665,7 +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()));
 }
@@ -1675,7 +1675,7 @@ 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)));
 }

googlemock/test/gmock-more-actions_test.cc

@@ -202,45 +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)));
 }
@@ -253,7 +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"),
@@ -264,7 +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"),
@@ -276,7 +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"),
@@ -288,7 +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"),
@@ -298,12 +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))));
 }
@@ -320,13 +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)));
 }
 
@@ -447,13 +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)));
 }

googlemock/test/gmock-spec-builders_test.cc

@@ -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);
       },
       "");
@@ -2045,7 +2045,7 @@ 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/main/docs/"

googlemock/test/gmock_output_test_golden.txt

@@ -79,14 +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/main/docs/gmock_cook_book.md#knowing-when-to-expect-useoncall 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/main/docs/gmock_cook_book.md#knowing-when-to-expect-useoncall 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
@@ -283,14 +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/main/docs/gmock_cook_book.md#knowing-when-to-expect-useoncall 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/main/docs/gmock_cook_book.md#knowing-when-to-expect-useoncall 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
 

googletest/CMakeLists.txt

@@ -132,9 +132,6 @@ if(GTEST_HAS_ABSL)
     absl::flags_reflection
     absl::flags_usage
     absl::strings
-    absl::any
-    absl::optional
-    absl::variant
     re2::re2
   )
 endif()

googletest/README.md

@@ -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 v1.16.0
+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
@@ -124,9 +124,9 @@ match the project in which it is included.
 
 #### C++ Standard Version
 
-An environment that supports C++14 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 14)` command along
+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.
@@ -145,9 +145,9 @@ We list the most frequently used macros below. For a complete list, see file
 ### 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

googletest/include/gtest/gtest-matchers.h

@@ -296,12 +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_;
@@ -773,6 +773,35 @@ class GeMatcher
   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;

googletest/include/gtest/gtest-printers.h

@@ -104,15 +104,19 @@
 #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
@@ -245,8 +249,8 @@ struct StreamPrinter {
   // 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)) {
+  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;
@@ -521,11 +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_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
 
@@ -695,44 +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
+// Overloads for ::std::u8string and ::std::u8string_view
 #ifdef __cpp_lib_char8_t
-GTEST_API_ void PrintU8StringTo(const ::std::u8string& s, ::std::ostream* os);
+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
 
@@ -890,14 +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 {
@@ -906,7 +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
@@ -916,16 +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";
@@ -937,29 +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 << '(';
-#ifdef GTEST_HAS_ABSL
-    absl::visit(Visitor{os, value.index()}, value);
-#else
     std::visit(Visitor{os, value.index()}, value);
-#endif  // GTEST_HAS_ABSL
     *os << ')';
   }
 
@@ -976,8 +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>

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

googletest/include/gtest/gtest.h

@@ -1610,6 +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 {
@@ -1621,7 +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
@@ -1693,7 +1696,7 @@ class WithParamInterface {
 
   // 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?";

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

@@ -198,21 +198,8 @@
 //                                        suppressed (constant conditional).
 //   GTEST_INTENTIONAL_CONST_COND_POP_  - finish code section where MSVC C4127
 //                                        is suppressed.
-//   GTEST_INTERNAL_HAS_ANY - for enabling UniversalPrinter<std::any> or
-//                            UniversalPrinter<absl::any> specializations.
-//                            Always defined to 0 or 1.
-//   GTEST_INTERNAL_HAS_OPTIONAL - for enabling UniversalPrinter<std::optional>
-//   or
-//                                 UniversalPrinter<absl::optional>
-//                                 specializations. Always defined to 0 or 1.
 //   GTEST_INTERNAL_HAS_STD_SPAN - for enabling UniversalPrinter<std::span>
 //                                 specializations. Always defined to 0 or 1
-//   GTEST_INTERNAL_HAS_STRING_VIEW - for enabling Matcher<std::string_view> or
-//                                    Matcher<absl::string_view>
-//                                    specializations. Always defined to 0 or 1.
-//   GTEST_INTERNAL_HAS_VARIANT - for enabling UniversalPrinter<std::variant> or
-//                                UniversalPrinter<absl::variant>
-//                                specializations. Always defined to 0 or 1.
 //   GTEST_USE_OWN_FLAGFILE_FLAG_ - Always defined to 0 or 1.
 //   GTEST_HAS_CXXABI_H_ - Always defined to 0 or 1.
 //   GTEST_CAN_STREAM_RESULTS_ - Always defined to 0 or 1.
@@ -1398,9 +1385,9 @@ class GTEST_API_ Mutex {
   Mutex();
   ~Mutex();
 
-  void Lock();
+  void lock();
 
-  void Unlock();
+  void unlock();
 
   // Does nothing if the current thread holds the mutex. Otherwise, crashes
   // with high probability.
@@ -1437,12 +1424,11 @@ class GTEST_API_ Mutex {
 // "MutexLock l(&mu)".  Hence the typedef trick below.
 class GTestMutexLock {
  public:
-  explicit GTestMutexLock(Mutex* mutex) : mutex_(mutex) { mutex_->Lock(); }
-
-  ~GTestMutexLock() { mutex_->Unlock(); }
+  explicit GTestMutexLock(Mutex& mutex) : mutex_(mutex) { mutex_.lock(); }
+  ~GTestMutexLock() { mutex_.unlock(); }
 
  private:
-  Mutex* const mutex_;
+  Mutex& mutex_;
 
   GTestMutexLock(const GTestMutexLock&) = delete;
   GTestMutexLock& operator=(const GTestMutexLock&) = delete;
@@ -1654,14 +1640,14 @@ class ThreadLocal : public ThreadLocalBase {
 class MutexBase {
  public:
   // Acquires this mutex.
-  void Lock() {
+  void lock() {
     GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_lock(&mutex_));
     owner_ = pthread_self();
     has_owner_ = true;
   }
 
   // Releases this mutex.
-  void Unlock() {
+  void unlock() {
     // Since the lock is being released the owner_ field should no longer be
     // considered valid. We don't protect writing to has_owner_ here, as it's
     // the caller's responsibility to ensure that the current thread holds the
@@ -1729,12 +1715,11 @@ class Mutex : public MutexBase {
 // "MutexLock l(&mu)".  Hence the typedef trick below.
 class GTestMutexLock {
  public:
-  explicit GTestMutexLock(MutexBase* mutex) : mutex_(mutex) { mutex_->Lock(); }
-
-  ~GTestMutexLock() { mutex_->Unlock(); }
+  explicit GTestMutexLock(MutexBase& mutex) : mutex_(mutex) { mutex_.lock(); }
+  ~GTestMutexLock() { mutex_.unlock(); }
 
  private:
-  MutexBase* const mutex_;
+  MutexBase& mutex_;
 
   GTestMutexLock(const GTestMutexLock&) = delete;
   GTestMutexLock& operator=(const GTestMutexLock&) = delete;
@@ -1877,8 +1862,8 @@ class GTEST_API_ ThreadLocal {
 class Mutex {
  public:
   Mutex() {}
-  void Lock() {}
-  void Unlock() {}
+  void lock() {}
+  void unlock() {}
   void AssertHeld() const {}
 };
 
@@ -1894,7 +1879,7 @@ class Mutex {
 // "MutexLock l(&mu)".  Hence the typedef trick below.
 class GTestMutexLock {
  public:
-  explicit GTestMutexLock(Mutex*) {}  // NOLINT
+  explicit GTestMutexLock(Mutex&) {}  // NOLINT
 };
 
 typedef GTestMutexLock MutexLock;
@@ -2335,71 +2320,11 @@ const char* StringFromGTestEnv(const char* flag, const char* default_val);
 }  // namespace internal
 }  // namespace testing
 
-#ifdef GTEST_HAS_ABSL
-// Always use absl::any for UniversalPrinter<> specializations if googletest
-// is built with absl support.
-#define GTEST_INTERNAL_HAS_ANY 1
-#include "absl/types/any.h"
-namespace testing {
-namespace internal {
-using Any = ::absl::any;
-}  // namespace internal
-}  // namespace testing
+#if GTEST_INTERNAL_HAVE_CPP_ATTRIBUTE(clang::annotate)
+#define GTEST_INTERNAL_DEPRECATE_AND_INLINE(msg) \
+  [[deprecated(msg), clang::annotate("inline-me")]]
 #else
-#if defined(__cpp_lib_any) || (GTEST_INTERNAL_HAS_INCLUDE(<any>) &&        \
-                               GTEST_INTERNAL_CPLUSPLUS_LANG >= 201703L && \
-                               (!defined(_MSC_VER) || GTEST_HAS_RTTI))
-// Otherwise for C++17 and higher use std::any for UniversalPrinter<>
-// specializations.
-#define GTEST_INTERNAL_HAS_ANY 1
-#include <any>
-namespace testing {
-namespace internal {
-using Any = ::std::any;
-}  // namespace internal
-}  // namespace testing
-// The case where absl is configured NOT to alias std::any is not
-// supported.
-#endif  // __cpp_lib_any
-#endif  // GTEST_HAS_ABSL
-
-#ifndef GTEST_INTERNAL_HAS_ANY
-#define GTEST_INTERNAL_HAS_ANY 0
-#endif
-
-#ifdef GTEST_HAS_ABSL
-// Always use absl::optional for UniversalPrinter<> specializations if
-// googletest is built with absl support.
-#define GTEST_INTERNAL_HAS_OPTIONAL 1
-#include "absl/types/optional.h"
-namespace testing {
-namespace internal {
-template <typename T>
-using Optional = ::absl::optional<T>;
-inline ::absl::nullopt_t Nullopt() { return ::absl::nullopt; }
-}  // namespace internal
-}  // namespace testing
-#else
-#if defined(__cpp_lib_optional) || (GTEST_INTERNAL_HAS_INCLUDE(<optional>) && \
-                                    GTEST_INTERNAL_CPLUSPLUS_LANG >= 201703L)
-// Otherwise for C++17 and higher use std::optional for UniversalPrinter<>
-// specializations.
-#define GTEST_INTERNAL_HAS_OPTIONAL 1
-#include <optional>
-namespace testing {
-namespace internal {
-template <typename T>
-using Optional = ::std::optional<T>;
-inline ::std::nullopt_t Nullopt() { return ::std::nullopt; }
-}  // namespace internal
-}  // namespace testing
-// The case where absl is configured NOT to alias std::optional is not
-// supported.
-#endif  // __cpp_lib_optional
-#endif  // GTEST_HAS_ABSL
-
-#ifndef GTEST_INTERNAL_HAS_OPTIONAL
-#define GTEST_INTERNAL_HAS_OPTIONAL 0
+#define GTEST_INTERNAL_DEPRECATE_AND_INLINE(msg) [[deprecated(msg)]]
 #endif
 
 #if defined(__cpp_lib_span) || (GTEST_INTERNAL_HAS_INCLUDE(<span>) && \
@@ -2443,38 +2368,6 @@ using StringView = ::std::string_view;
 #define GTEST_INTERNAL_HAS_STRING_VIEW 0
 #endif
 
-#ifdef GTEST_HAS_ABSL
-// Always use absl::variant for UniversalPrinter<> specializations if googletest
-// is built with absl support.
-#define GTEST_INTERNAL_HAS_VARIANT 1
-#include "absl/types/variant.h"
-namespace testing {
-namespace internal {
-template <typename... T>
-using Variant = ::absl::variant<T...>;
-}  // namespace internal
-}  // namespace testing
-#else
-#if defined(__cpp_lib_variant) || (GTEST_INTERNAL_HAS_INCLUDE(<variant>) && \
-                                   GTEST_INTERNAL_CPLUSPLUS_LANG >= 201703L)
-// Otherwise for C++17 and higher use std::variant for UniversalPrinter<>
-// specializations.
-#define GTEST_INTERNAL_HAS_VARIANT 1
-#include <variant>
-namespace testing {
-namespace internal {
-template <typename... T>
-using Variant = ::std::variant<T...>;
-}  // namespace internal
-}  // namespace testing
-// The case where absl is configured NOT to alias std::variant is not supported.
-#endif  // __cpp_lib_variant
-#endif  // GTEST_HAS_ABSL
-
-#ifndef GTEST_INTERNAL_HAS_VARIANT
-#define GTEST_INTERNAL_HAS_VARIANT 0
-#endif
-
 #if (defined(__cpp_lib_three_way_comparison) || \
      (GTEST_INTERNAL_HAS_INCLUDE(<compare>) &&  \
       GTEST_INTERNAL_CPLUSPLUS_LANG >= 201907L))

googletest/src/gtest-port.cc

@@ -320,13 +320,13 @@ Mutex::~Mutex() {
   }
 }
 
-void Mutex::Lock() {
+void Mutex::lock() {
   ThreadSafeLazyInit();
   ::EnterCriticalSection(critical_section_);
   owner_thread_id_ = ::GetCurrentThreadId();
 }
 
-void Mutex::Unlock() {
+void Mutex::unlock() {
   ThreadSafeLazyInit();
   // We don't protect writing to owner_thread_id_ here, as it's the
   // caller's responsibility to ensure that the current thread holds the
@@ -499,7 +499,7 @@ class ThreadLocalRegistryImpl {
     MemoryIsNotDeallocated memory_is_not_deallocated;
 #endif  // _MSC_VER
     DWORD current_thread = ::GetCurrentThreadId();
-    MutexLock lock(&mutex_);
+    MutexLock lock(mutex_);
     ThreadIdToThreadLocals* const thread_to_thread_locals =
         GetThreadLocalsMapLocked();
     ThreadIdToThreadLocals::iterator thread_local_pos =
@@ -532,7 +532,7 @@ class ThreadLocalRegistryImpl {
     // Clean up the ThreadLocalValues data structure while holding the lock, but
     // defer the destruction of the ThreadLocalValueHolderBases.
     {
-      MutexLock lock(&mutex_);
+      MutexLock lock(mutex_);
       ThreadIdToThreadLocals* const thread_to_thread_locals =
           GetThreadLocalsMapLocked();
       for (ThreadIdToThreadLocals::iterator it =
@@ -559,7 +559,7 @@ class ThreadLocalRegistryImpl {
     // Clean up the ThreadIdToThreadLocals data structure while holding the
     // lock, but defer the destruction of the ThreadLocalValueHolderBases.
     {
-      MutexLock lock(&mutex_);
+      MutexLock lock(mutex_);
       ThreadIdToThreadLocals* const thread_to_thread_locals =
           GetThreadLocalsMapLocked();
       ThreadIdToThreadLocals::iterator thread_local_pos =

googletest/src/gtest-printers.cc

@@ -50,7 +50,7 @@
 #include <iomanip>
 #include <ios>
 #include <ostream>  // NOLINT
-#include <string>
+#include <string_view>
 #include <type_traits>
 
 #include "gtest/internal/gtest-port.h"
@@ -333,14 +333,14 @@ void PrintTo(__int128_t v, ::std::ostream* os) {
 
 // Prints the given array of characters to the ostream.  CharType must be either
 // char, char8_t, char16_t, char32_t, or wchar_t.
-// The array starts at begin, the length is len, it may include '\0' characters
-// and may not be NUL-terminated.
+// The array starts at begin (which may be nullptr) and contains len characters.
+// The array may include '\0' characters and may not be NUL-terminated.
 template <typename CharType>
 GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_ GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_
     GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_
         GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_ static CharFormat
         PrintCharsAsStringTo(const CharType* begin, size_t len, ostream* os) {
-  const char* const quote_prefix = GetCharWidthPrefix(*begin);
+  const char* const quote_prefix = GetCharWidthPrefix(CharType());
   *os << quote_prefix << "\"";
   bool is_previous_hex = false;
   CharFormat print_format = kAsIs;
@@ -516,13 +516,13 @@ bool IsValidUTF8(const char* str, size_t length) {
 void ConditionalPrintAsText(const char* str, size_t length, ostream* os) {
   if (!ContainsUnprintableControlCodes(str, length) &&
       IsValidUTF8(str, length)) {
-    *os << "\n    As Text: \"" << str << "\"";
+    *os << "\n    As Text: \"" << ::std::string_view(str, length) << "\"";
   }
 }
 
 }  // anonymous namespace
 
-void PrintStringTo(const ::std::string& s, ostream* os) {
+void PrintStringTo(::std::string_view s, ostream* os) {
   if (PrintCharsAsStringTo(s.data(), s.size(), os) == kHexEscape) {
     if (GTEST_FLAG_GET(print_utf8)) {
       ConditionalPrintAsText(s.data(), s.size(), os);
@@ -531,21 +531,21 @@ void PrintStringTo(const ::std::string& s, ostream* os) {
 }
 
 #ifdef __cpp_lib_char8_t
-void PrintU8StringTo(const ::std::u8string& s, ostream* os) {
+void PrintU8StringTo(::std::u8string_view s, ostream* os) {
   PrintCharsAsStringTo(s.data(), s.size(), os);
 }
 #endif
 
-void PrintU16StringTo(const ::std::u16string& s, ostream* os) {
+void PrintU16StringTo(::std::u16string_view s, ostream* os) {
   PrintCharsAsStringTo(s.data(), s.size(), os);
 }
 
-void PrintU32StringTo(const ::std::u32string& s, ostream* os) {
+void PrintU32StringTo(::std::u32string_view s, ostream* os) {
   PrintCharsAsStringTo(s.data(), s.size(), os);
 }
 
 #if GTEST_HAS_STD_WSTRING
-void PrintWideStringTo(const ::std::wstring& s, ostream* os) {
+void PrintWideStringTo(::std::wstring_view s, ostream* os) {
   PrintCharsAsStringTo(s.data(), s.size(), os);
 }
 #endif  // GTEST_HAS_STD_WSTRING

googletest/src/gtest.cc

@@ -269,6 +269,13 @@ GTEST_DEFINE_bool_(
     "True if and only if the test should fail if no test case (including "
     "disabled test cases) is linked.");
 
+GTEST_DEFINE_bool_(
+    fail_if_no_test_selected,
+    testing::internal::BoolFromGTestEnv("fail_if_no_test_selected", false),
+    "True if and only if the test should fail if no test case is selected to "
+    "run. A test case is selected to run if it is not disabled and is matched "
+    "by the filter flag so that it starts executing.");
+
 GTEST_DEFINE_bool_(
     also_run_disabled_tests,
     testing::internal::BoolFromGTestEnv("also_run_disabled_tests", false),
@@ -706,7 +713,7 @@ std::string UnitTestOptions::GetAbsolutePathToOutputFile() {
   const char* const gtest_output_flag = s.c_str();
 
   std::string format = GetOutputFormat();
-  if (format.empty()) format = std::string(kDefaultOutputFormat);
+  if (format.empty()) format = kDefaultOutputFormat;
 
   const char* const colon = strchr(gtest_output_flag, ':');
   if (colon == nullptr)
@@ -1079,14 +1086,14 @@ void DefaultPerThreadTestPartResultReporter::ReportTestPartResult(
 // Returns the global test part result reporter.
 TestPartResultReporterInterface*
 UnitTestImpl::GetGlobalTestPartResultReporter() {
-  internal::MutexLock lock(&global_test_part_result_reporter_mutex_);
+  internal::MutexLock lock(global_test_part_result_reporter_mutex_);
   return global_test_part_result_reporter_;
 }
 
 // Sets the global test part result reporter.
 void UnitTestImpl::SetGlobalTestPartResultReporter(
     TestPartResultReporterInterface* reporter) {
-  internal::MutexLock lock(&global_test_part_result_reporter_mutex_);
+  internal::MutexLock lock(global_test_part_result_reporter_mutex_);
   global_test_part_result_reporter_ = reporter;
 }
 
@@ -1488,17 +1495,17 @@ class Hunk {
   // Print a unified diff header for one hunk.
   // The format is
   //   "@@ -<left_start>,<left_length> +<right_start>,<right_length> @@"
-  // where the left/right parts are omitted if unnecessary.
+  // where the left/right lengths are omitted if unnecessary.
   void PrintHeader(std::ostream* ss) const {
-    *ss << "@@ ";
-    if (removes_) {
-      *ss << "-" << left_start_ << "," << (removes_ + common_);
+    size_t left_length = removes_ + common_;
+    size_t right_length = adds_ + common_;
+    *ss << "@@ " << "-" << left_start_;
+    if (left_length != 1) {
+      *ss << "," << left_length;
     }
-    if (removes_ && adds_) {
-      *ss << " ";
-    }
-    if (adds_) {
-      *ss << "+" << right_start_ << "," << (adds_ + common_);
+    *ss << " " << "+" << right_start_;
+    if (right_length != 1) {
+      *ss << "," << right_length;
     }
     *ss << " @@\n";
   }
@@ -2340,7 +2347,7 @@ void TestResult::RecordProperty(const std::string& xml_element,
   if (!ValidateTestProperty(xml_element, test_property)) {
     return;
   }
-  internal::MutexLock lock(&test_properties_mutex_);
+  internal::MutexLock lock(test_properties_mutex_);
   const std::vector<TestProperty>::iterator property_with_matching_key =
       std::find_if(test_properties_.begin(), test_properties_.end(),
                    internal::TestPropertyKeyIs(test_property.key()));
@@ -3298,6 +3305,7 @@ bool ShouldUseColor(bool stdout_is_tty) {
     const bool term_supports_color =
         term != nullptr && (String::CStringEquals(term, "xterm") ||
                             String::CStringEquals(term, "xterm-color") ||
+                            String::CStringEquals(term, "xterm-ghostty") ||
                             String::CStringEquals(term, "xterm-kitty") ||
                             String::CStringEquals(term, "alacritty") ||
                             String::CStringEquals(term, "screen") ||
@@ -4347,8 +4355,8 @@ void XmlUnitTestResultPrinter::OutputXmlTestResult(::std::ostream* stream,
           internal::FormatCompilerIndependentFileLocation(part.file_name(),
                                                           part.line_number());
       const std::string summary = location + "\n" + part.summary();
-      *stream << "      <skipped message=\""
-              << EscapeXmlAttribute(summary.c_str()) << "\">";
+      *stream << "      <skipped message=\"" << EscapeXmlAttribute(summary)
+              << "\">";
       const std::string detail = location + "\n" + part.message();
       OutputXmlCDataSection(stream, RemoveInvalidXmlCharacters(detail).c_str());
       *stream << "</skipped>\n";
@@ -5080,7 +5088,7 @@ std::string OsStackTraceGetter::CurrentStackTrace(int max_depth, int skip_count)
 
   void* caller_frame = nullptr;
   {
-    MutexLock lock(&mutex_);
+    MutexLock lock(mutex_);
     caller_frame = caller_frame_;
   }
 
@@ -5119,7 +5127,7 @@ void OsStackTraceGetter::UponLeavingGTest() GTEST_LOCK_EXCLUDED_(mutex_) {
     caller_frame = nullptr;
   }
 
-  MutexLock lock(&mutex_);
+  MutexLock lock(mutex_);
   caller_frame_ = caller_frame;
 #endif  // GTEST_HAS_ABSL
 }
@@ -5382,13 +5390,13 @@ void UnitTest::UponLeavingGTest() {
 
 // Sets the TestSuite object for the test that's currently running.
 void UnitTest::set_current_test_suite(TestSuite* a_current_test_suite) {
-  internal::MutexLock lock(&mutex_);
+  internal::MutexLock lock(mutex_);
   impl_->set_current_test_suite(a_current_test_suite);
 }
 
 // Sets the TestInfo object for the test that's currently running.
 void UnitTest::set_current_test_info(TestInfo* a_current_test_info) {
-  internal::MutexLock lock(&mutex_);
+  internal::MutexLock lock(mutex_);
   impl_->set_current_test_info(a_current_test_info);
 }
 
@@ -5427,7 +5435,7 @@ void UnitTest::AddTestPartResult(TestPartResult::Type result_type,
   Message msg;
   msg << message;
 
-  internal::MutexLock lock(&mutex_);
+  internal::MutexLock lock(mutex_);
   if (!impl_->gtest_trace_stack().empty()) {
     msg << "\n" << GTEST_NAME_ << " trace:";
 
@@ -5610,7 +5618,7 @@ const char* UnitTest::original_working_dir() const {
 // or NULL if no test is running.
 const TestSuite* UnitTest::current_test_suite() const
     GTEST_LOCK_EXCLUDED_(mutex_) {
-  internal::MutexLock lock(&mutex_);
+  internal::MutexLock lock(mutex_);
   return impl_->current_test_suite();
 }
 
@@ -5618,7 +5626,7 @@ const TestSuite* UnitTest::current_test_suite() const
 #ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 const TestCase* UnitTest::current_test_case() const
     GTEST_LOCK_EXCLUDED_(mutex_) {
-  internal::MutexLock lock(&mutex_);
+  internal::MutexLock lock(mutex_);
   return impl_->current_test_suite();
 }
 #endif
@@ -5627,7 +5635,7 @@ const TestCase* UnitTest::current_test_case() const
 // or NULL if no test is running.
 const TestInfo* UnitTest::current_test_info() const
     GTEST_LOCK_EXCLUDED_(mutex_) {
-  internal::MutexLock lock(&mutex_);
+  internal::MutexLock lock(mutex_);
   return impl_->current_test_info();
 }
 
@@ -5651,13 +5659,13 @@ UnitTest::~UnitTest() { delete impl_; }
 // Google Test trace stack.
 void UnitTest::PushGTestTrace(const internal::TraceInfo& trace)
     GTEST_LOCK_EXCLUDED_(mutex_) {
-  internal::MutexLock lock(&mutex_);
+  internal::MutexLock lock(mutex_);
   impl_->gtest_trace_stack().push_back(trace);
 }
 
 // Pops a trace from the per-thread Google Test trace stack.
 void UnitTest::PopGTestTrace() GTEST_LOCK_EXCLUDED_(mutex_) {
-  internal::MutexLock lock(&mutex_);
+  internal::MutexLock lock(mutex_);
   impl_->gtest_trace_stack().pop_back();
 }
 
@@ -6079,6 +6087,20 @@ bool UnitTestImpl::RunAllTests() {
                       TearDownEnvironment);
         repeater->OnEnvironmentsTearDownEnd(*parent_);
       }
+    } else if (GTEST_FLAG_GET(fail_if_no_test_selected)) {
+      // If there were no tests to run, bail if we were requested to be
+      // strict.
+      constexpr char kNoTestsSelectedMessage[] =
+          "No tests ran. Check that tests exist and are not disabled or "
+          "filtered out.\n\n"
+          "For sharded runs, this error indicates an empty shard. This can "
+          "happen if you have more shards than tests, or if --gtest_filter "
+          "leaves a shard with no tests.\n\n"
+          "To permit empty shards (e.g., when debugging with a filter), "
+          "specify \n"
+          "--gtest_fail_if_no_test_selected=false.";
+      ColoredPrintf(GTestColor::kRed, "%s\n", kNoTestsSelectedMessage);
+      return false;
     }
 
     elapsed_time_ = timer.Elapsed();
@@ -6763,6 +6785,7 @@ static bool ParseGoogleTestFlag(const char* const arg) {
   GTEST_INTERNAL_PARSE_FLAG(death_test_use_fork);
   GTEST_INTERNAL_PARSE_FLAG(fail_fast);
   GTEST_INTERNAL_PARSE_FLAG(fail_if_no_test_linked);
+  GTEST_INTERNAL_PARSE_FLAG(fail_if_no_test_selected);
   GTEST_INTERNAL_PARSE_FLAG(filter);
   GTEST_INTERNAL_PARSE_FLAG(internal_run_death_test);
   GTEST_INTERNAL_PARSE_FLAG(list_tests);

googletest/test/BUILD.bazel

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

googletest/test/googletest-color-test.py

@@ -79,6 +79,7 @@ class GTestColorTest(gtest_test_utils.TestCase):
     self.assertTrue(UsesColor('cygwin', None, None))
     self.assertTrue(UsesColor('xterm', None, None))
     self.assertTrue(UsesColor('xterm-color', None, None))
+    self.assertTrue(UsesColor('xterm-ghostty', None, None))
     self.assertTrue(UsesColor('xterm-kitty', None, None))
     self.assertTrue(UsesColor('alacritty', None, None))
     self.assertTrue(UsesColor('xterm-256color', None, None))

googletest/test/googletest-death-test-test.cc

@@ -291,7 +291,7 @@ TEST(ExitStatusPredicateTest, KilledBySignal) {
   const int status_kill = KilledExitStatus(SIGKILL);
   const testing::KilledBySignal pred_segv(SIGSEGV);
   const testing::KilledBySignal pred_kill(SIGKILL);
-#if !(defined(GTEST_OS_LINUX_ANDROID) && __ANDROID_API__ <= 21)
+#if !(defined(GTEST_OS_LINUX_ANDROID) && __ANDROID_API__ <= 23)
   EXPECT_PRED1(pred_segv, status_segv);
 #endif
   EXPECT_PRED1(pred_kill, status_kill);

googletest/test/googletest-fail-if-no-test-linked-test.py

@@ -80,11 +80,7 @@ class GTestFailIfNoTestLinkedTest(gtest_test_utils.TestCase):
         )
     )
     warning_file_contents = open(warning_file, "r").read()
-    self.assertEqual(
-        warning_file_contents,
-        "This test program does NOT link in any test case. Please make sure"
-        " this is intended.\n",
-    )
+    self.assertIn("does NOT link", warning_file_contents)
 
   def testFailsIfNoTestLinkedAndFlagSpecified(self):
     """Tests the behavior of no test linked and flag specified."""

googletest/test/googletest-fail-if-no-test-selected-test.py

@@ -0,0 +1,91 @@
+#!/usr/bin/env python3  # pylint: disable=g-interpreter-mismatch
+#
+# Copyright 2025, 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.
+"""Tests for Google Test's --gtest_fail_if_no_test_selected flag."""
+
+from googletest.test import gtest_test_utils
+
+
+# The command line flag for enabling the fail-if-no-test-selected behavior.
+FAIL_IF_NO_TEST_SELECTED_FLAG = "gtest_fail_if_no_test_selected"
+
+# The environment variable for the test output warnings file.
+TEST_WARNINGS_OUTPUT_FILE = "TEST_WARNINGS_OUTPUT_FILE"
+
+
+class GTestFailIfNoTestSelectedTest(gtest_test_utils.TestCase):
+  """Tests the --gtest_fail_if_no_test_selected flag."""
+
+  def Run(self, program_name, flags=None, env=None):
+    """Run the given program with the given flag.
+
+    Args:
+      program_name: Name of the program to run.
+      flags: The command line flags to pass to the program, or None.
+      env: Dictionary with environment to pass to the subprocess.
+
+    Returns:
+      True if the program exits with code 0, false otherwise.
+    """
+
+    exe_path = gtest_test_utils.GetTestExecutablePath(program_name)
+    args = [exe_path]
+    if flags is not None:
+      args.extend(flags)
+    process = gtest_test_utils.Subprocess(args, capture_stderr=False, env=env)
+    return process.exited and process.exit_code == 0
+
+  def testSucceedsWhenFlagIsNotSetAndOnlyDisabledTestsPresent(self):
+    """Tests that no test selected results in success without the flag set."""
+    self.assertTrue(
+        self.Run("googletest-fail-if-no-test-linked-test-with-disabled-test_"),
+    )
+
+  def testFailsWhenFlagIsSetAndOnlyDisabledTestsPresent(self):
+    """Tests that no test selected results in failure with the flag set."""
+    self.assertFalse(
+        self.Run(
+            "googletest-fail-if-no-test-linked-test-with-disabled-test_",
+            flags=[f"--{FAIL_IF_NO_TEST_SELECTED_FLAG}"],
+        ),
+    )
+
+  def testSucceedsWhenFlagIsSetAndEnabledTestsPresent(self):
+    """Tests that a test running still succeeds when the flag is set."""
+    self.assertTrue(
+        self.Run(
+            "googletest-fail-if-no-test-linked-test-with-enabled-test_",
+            flags=[f"--{FAIL_IF_NO_TEST_SELECTED_FLAG}"],
+        ),
+    )
+
+
+if __name__ == "__main__":
+  gtest_test_utils.Main()

googletest/test/googletest-output-test-golden-lin.txt

@@ -62,7 +62,7 @@ Expected equality of these values:
     Which is: "\"Line\0 1\"\nLine 2"
   "Line 2"
 With diff:
-@@ -1,2 @@
+@@ -1,2 +1 @@
 -\"Line\0 1\"
  Line 2
 

googletest/test/googletest-param-test-test.cc

@@ -696,7 +696,7 @@ class TestGenerationEnvironment : public ::testing::Environment {
       msg << "TestsExpandedAndRun/" << i;
       if (UnitTestOptions::FilterMatchesTest(
               "TestExpansionModule/MultipleTestGenerationTest",
-              msg.GetString().c_str())) {
+              msg.GetString())) {
         perform_check = true;
       }
     }
@@ -1174,7 +1174,7 @@ TEST_P(ParameterizedDerivedTest, SeesSequence) {
 class ParameterizedDeathTest : public ::testing::TestWithParam<int> {};
 
 TEST_F(ParameterizedDeathTest, GetParamDiesFromTestF) {
-  EXPECT_DEATH_IF_SUPPORTED(GetParam(), ".* value-parameterized test .*");
+  EXPECT_DEATH_IF_SUPPORTED((void)GetParam(), ".* value-parameterized test .*");
 }
 
 INSTANTIATE_TEST_SUITE_P(RangeZeroToFive, ParameterizedDerivedTest,

googletest/test/googletest-port-test.cc

@@ -288,8 +288,8 @@ TEST(FormatCompilerIndependentFileLocationTest, FormatsUknownFileAndLine) {
     defined(GTEST_OS_OPENBSD) || defined(GTEST_OS_GNU_HURD)
 void* ThreadFunc(void* data) {
   internal::Mutex* mutex = static_cast<internal::Mutex*>(data);
-  mutex->Lock();
-  mutex->Unlock();
+  mutex->lock();
+  mutex->unlock();
   return nullptr;
 }
 
@@ -308,7 +308,7 @@ TEST(GetThreadCountTest, ReturnsCorrectValue) {
 
     internal::Mutex mutex;
     {
-      internal::MutexLock lock(&mutex);
+      internal::MutexLock lock(mutex);
       pthread_attr_t attr;
       ASSERT_EQ(0, pthread_attr_init(&attr));
       ASSERT_EQ(0, pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE));
@@ -1028,7 +1028,9 @@ TEST(MutexDeathTest, AssertHeldShouldAssertWhenNotLocked) {
   EXPECT_DEATH_IF_SUPPORTED(
       {
         Mutex m;
-        { MutexLock lock(&m); }
+        {
+          MutexLock lock(m);
+        }
         m.AssertHeld();
       },
       "thread .*hold");
@@ -1036,13 +1038,13 @@ TEST(MutexDeathTest, AssertHeldShouldAssertWhenNotLocked) {
 
 TEST(MutexTest, AssertHeldShouldNotAssertWhenLocked) {
   Mutex m;
-  MutexLock lock(&m);
+  MutexLock lock(m);
   m.AssertHeld();
 }
 
 class AtomicCounterWithMutex {
  public:
-  explicit AtomicCounterWithMutex(Mutex* mutex)
+  explicit AtomicCounterWithMutex(Mutex& mutex)
       : value_(0), mutex_(mutex), random_(42) {}
 
   void Increment() {
@@ -1083,7 +1085,7 @@ class AtomicCounterWithMutex {
 
  private:
   volatile int value_;
-  Mutex* const mutex_;  // Protects value_.
+  Mutex& mutex_;  // Protects value_.
   Random random_;
 };
 
@@ -1094,7 +1096,7 @@ void CountingThreadFunc(pair<AtomicCounterWithMutex*, int> param) {
 // Tests that the mutex only lets one thread at a time to lock it.
 TEST(MutexTest, OnlyOneThreadCanLockAtATime) {
   Mutex mutex;
-  AtomicCounterWithMutex locked_counter(&mutex);
+  AtomicCounterWithMutex locked_counter(mutex);
 
   typedef ThreadWithParam<pair<AtomicCounterWithMutex*, int> > ThreadType;
   const int kCycleCount = 20;

googletest/test/googletest-printers-test.cc

@@ -32,6 +32,7 @@
 // This file tests the universal value printer.
 
 #include <algorithm>
+#include <any>
 #include <cctype>
 #include <cstdint>
 #include <cstring>
@@ -42,14 +43,17 @@
 #include <list>
 #include <map>
 #include <memory>
+#include <optional>
 #include <ostream>
 #include <set>
 #include <sstream>
 #include <string>
+#include <string_view>
 #include <tuple>
 #include <unordered_map>
 #include <unordered_set>
 #include <utility>
+#include <variant>
 #include <vector>
 
 #include "gtest/gtest-printers.h"
@@ -796,7 +800,7 @@ struct Foo {
 TEST(PrintPointerTest, MemberVariablePointer) {
   EXPECT_TRUE(HasPrefix(Print(&Foo::value),
                         Print(sizeof(&Foo::value)) + "-byte object "));
-  int Foo::*p = NULL;  // NOLINT
+  int Foo::* p = NULL;  // NOLINT
   EXPECT_TRUE(HasPrefix(Print(p), Print(sizeof(p)) + "-byte object "));
 }
 
@@ -923,7 +927,7 @@ TEST(PrintArrayTest, BigArray) {
             PrintArrayHelper(a));
 }
 
-// Tests printing ::string and ::std::string.
+// Tests printing ::std::string and ::string_view.
 
 // ::std::string.
 TEST(PrintStringTest, StringInStdNamespace) {
@@ -933,6 +937,13 @@ TEST(PrintStringTest, StringInStdNamespace) {
             Print(str));
 }
 
+TEST(PrintStringTest, StringViewInStdNamespace) {
+  const char s[] = "'\"?\\\a\b\f\n\0\r\t\v\x7F\xFF a";
+  const ::std::string_view str(s, sizeof(s));
+  EXPECT_EQ("\"'\\\"?\\\\\\a\\b\\f\\n\\0\\r\\t\\v\\x7F\\xFF a\\0\"",
+            Print(str));
+}
+
 TEST(PrintStringTest, StringAmbiguousHex) {
   // "\x6BANANA" is ambiguous, it can be interpreted as starting with either of:
   // '\x6', '\x6B', or '\x6BA'.
@@ -950,7 +961,7 @@ TEST(PrintStringTest, StringAmbiguousHex) {
   EXPECT_EQ("\"!\\x5-!\"", Print(::std::string("!\x5-!")));
 }
 
-// Tests printing ::std::wstring.
+// Tests printing ::std::wstring and ::std::wstring_view.
 #if GTEST_HAS_STD_WSTRING
 // ::std::wstring.
 TEST(PrintWideStringTest, StringInStdNamespace) {
@@ -962,6 +973,15 @@ TEST(PrintWideStringTest, StringInStdNamespace) {
       Print(str));
 }
 
+TEST(PrintWideStringTest, StringViewInStdNamespace) {
+  const wchar_t s[] = L"'\"?\\\a\b\f\n\0\r\t\v\xD3\x576\x8D3\xC74D a";
+  const ::std::wstring_view str(s, sizeof(s) / sizeof(wchar_t));
+  EXPECT_EQ(
+      "L\"'\\\"?\\\\\\a\\b\\f\\n\\0\\r\\t\\v"
+      "\\xD3\\x576\\x8D3\\xC74D a\\0\"",
+      Print(str));
+}
+
 TEST(PrintWideStringTest, StringAmbiguousHex) {
   // same for wide strings.
   EXPECT_EQ("L\"0\\x12\" L\"3\"", Print(::std::wstring(L"0\x12"
@@ -980,6 +1000,12 @@ TEST(PrintStringTest, U8String) {
   EXPECT_EQ(str, str);  // Verify EXPECT_EQ compiles with this type.
   EXPECT_EQ("u8\"Hello, \\xE4\\xB8\\x96\\xE7\\x95\\x8C\"", Print(str));
 }
+
+TEST(PrintStringTest, U8StringView) {
+  std::u8string_view str = u8"Hello, 世界";
+  EXPECT_EQ(str, str);  // Verify EXPECT_EQ compiles with this type.
+  EXPECT_EQ("u8\"Hello, \\xE4\\xB8\\x96\\xE7\\x95\\x8C\"", Print(str));
+}
 #endif
 
 TEST(PrintStringTest, U16String) {
@@ -988,12 +1014,24 @@ TEST(PrintStringTest, U16String) {
   EXPECT_EQ("u\"Hello, \\x4E16\\x754C\"", Print(str));
 }
 
+TEST(PrintStringTest, U16StringView) {
+  std::u16string_view str = u"Hello, 世界";
+  EXPECT_EQ(str, str);  // Verify EXPECT_EQ compiles with this type.
+  EXPECT_EQ("u\"Hello, \\x4E16\\x754C\"", Print(str));
+}
+
 TEST(PrintStringTest, U32String) {
   std::u32string str = U"Hello, 🗺️";
   EXPECT_EQ(str, str);  // Verify EXPECT_EQ compiles with this type
   EXPECT_EQ("U\"Hello, \\x1F5FA\\xFE0F\"", Print(str));
 }
 
+TEST(PrintStringTest, U32StringView) {
+  std::u32string_view str = U"Hello, 🗺️";
+  EXPECT_EQ(str, str);  // Verify EXPECT_EQ compiles with this type
+  EXPECT_EQ("U\"Hello, \\x1F5FA\\xFE0F\"", Print(str));
+}
+
 // Tests printing types that support generic streaming (i.e. streaming
 // to std::basic_ostream<Char, CharTraits> for any valid Char and
 // CharTraits types).
@@ -1453,7 +1491,7 @@ TEST(PrintReferenceTest, HandlesMemberFunctionPointer) {
 // Tests that the universal printer prints a member variable pointer
 // passed by reference.
 TEST(PrintReferenceTest, HandlesMemberVariablePointer) {
-  int Foo::*p = &Foo::value;  // NOLINT
+  int Foo::* p = &Foo::value;  // NOLINT
   EXPECT_TRUE(HasPrefix(PrintByRef(p), "@" + PrintPointer(&p) + " " +
                                            Print(sizeof(p)) + "-byte object "));
 }
@@ -1661,7 +1699,7 @@ TEST(PrintToStringTest, ContainsNonLatin) {
   EXPECT_PRINT_TO_STRING_(non_ascii_str,
                           "\"\\xEC\\x98\\xA4\\xEC\\xA0\\x84 4:30\"\n"
                           "    As Text: \"오전 4:30\"");
-  non_ascii_str = ::std::string("From ä — ẑ");
+  non_ascii_str = "From ä — ẑ";
   EXPECT_PRINT_TO_STRING_(non_ascii_str,
                           "\"From \\xC3\\xA4 \\xE2\\x80\\x94 \\xE1\\xBA\\x91\""
                           "\n    As Text: \"From ä — ẑ\"");
@@ -1891,6 +1929,22 @@ TEST(UniversalPrintTest, SmartPointers) {
             PrintToString(std::shared_ptr<void>(p.get(), [](void*) {})));
 }
 
+TEST(UniversalPrintTest, StringViewNonZeroTerminated) {
+  // Craft a non-ASCII UTF-8 input (to trigger a special path in
+  // `ConditionalPrintAsText`). Use array notation instead of the string
+  // literal syntax, to avoid placing a terminating 0 at the end of the input.
+  const char s[] = {'\357', '\243', '\242', 'X'};
+  // Only include the first 3 bytes in the `string_view` and leave the last one
+  // ('X') outside. This way, if the code tries to use `str.data()` with
+  // `strlen` instead of `str.size()`, it will include 'X' and cause a visible
+  // difference (in addition to ASAN tests detecting a buffer overflow due to
+  // the missing 0 at the end).
+  const ::std::string_view str(s, 3);
+  ::std::stringstream ss;
+  UniversalPrint(str, &ss);
+  EXPECT_EQ("\"\\xEF\\xA3\\xA2\"\n    As Text: \"\xEF\xA3\xA2\"", ss.str());
+}
+
 TEST(UniversalTersePrintTupleFieldsToStringsTestWithStd, PrintsEmptyTuple) {
   Strings result = UniversalTersePrintTupleFieldsToStrings(::std::make_tuple());
   EXPECT_EQ(0u, result.size());
@@ -1920,7 +1974,6 @@ TEST(UniversalTersePrintTupleFieldsToStringsTestWithStd, PrintsTersely) {
   EXPECT_EQ("\"a\"", result[1]);
 }
 
-#if GTEST_INTERNAL_HAS_ANY
 class PrintAnyTest : public ::testing::Test {
  protected:
   template <typename T>
@@ -1934,12 +1987,12 @@ class PrintAnyTest : public ::testing::Test {
 };
 
 TEST_F(PrintAnyTest, Empty) {
-  internal::Any any;
+  std::any any;
   EXPECT_EQ("no value", PrintToString(any));
 }
 
 TEST_F(PrintAnyTest, NonEmpty) {
-  internal::Any any;
+  std::any any;
   constexpr int val1 = 10;
   const std::string val2 = "content";
 
@@ -1950,27 +2003,23 @@ TEST_F(PrintAnyTest, NonEmpty) {
   EXPECT_EQ("value of type " + ExpectedTypeName<std::string>(),
             PrintToString(any));
 }
-#endif  // GTEST_INTERNAL_HAS_ANY
 
-#if GTEST_INTERNAL_HAS_OPTIONAL
 TEST(PrintOptionalTest, Basic) {
-  EXPECT_EQ("(nullopt)", PrintToString(internal::Nullopt()));
-  internal::Optional<int> value;
+  EXPECT_EQ("(nullopt)", PrintToString(std::nullopt));
+  std::optional<int> value;
   EXPECT_EQ("(nullopt)", PrintToString(value));
   value = {7};
   EXPECT_EQ("(7)", PrintToString(value));
-  EXPECT_EQ("(1.1)", PrintToString(internal::Optional<double>{1.1}));
-  EXPECT_EQ("(\"A\")", PrintToString(internal::Optional<std::string>{"A"}));
+  EXPECT_EQ("(1.1)", PrintToString(std::optional<double>{1.1}));
+  EXPECT_EQ("(\"A\")", PrintToString(std::optional<std::string>{"A"}));
 }
-#endif  // GTEST_INTERNAL_HAS_OPTIONAL
 
-#if GTEST_INTERNAL_HAS_VARIANT
 struct NonPrintable {
   unsigned char contents = 17;
 };
 
 TEST(PrintOneofTest, Basic) {
-  using Type = internal::Variant<int, StreamableInGlobal, NonPrintable>;
+  using Type = std::variant<int, StreamableInGlobal, NonPrintable>;
   EXPECT_EQ("('int(index = 0)' with value 7)", PrintToString(Type(7)));
   EXPECT_EQ("('StreamableInGlobal(index = 1)' with value StreamableInGlobal)",
             PrintToString(Type(StreamableInGlobal{})));
@@ -1979,7 +2028,6 @@ TEST(PrintOneofTest, Basic) {
       "1-byte object <11>)",
       PrintToString(Type(NonPrintable{})));
 }
-#endif  // GTEST_INTERNAL_HAS_VARIANT
 
 #if GTEST_INTERNAL_HAS_COMPARE_LIB
 TEST(PrintOrderingTest, Basic) {

googletest/test/gtest_stress_test.cc

@@ -95,9 +95,9 @@ void ManyAsserts(int id) {
 
     // RecordProperty() should interact safely with other threads as well.
     // The shared_key forces property updates.
-    Test::RecordProperty(IdToKey(id, "string").c_str(), IdToString(id).c_str());
+    Test::RecordProperty(IdToKey(id, "string"), IdToString(id));
     Test::RecordProperty(IdToKey(id, "int").c_str(), id);
-    Test::RecordProperty("shared_key", IdToString(id).c_str());
+    Test::RecordProperty("shared_key", IdToString(id));
 
     // This assertion should fail kThreadCount times per thread.  It
     // is for testing whether Google Test can handle failed assertions in a

googletest/test/gtest_unittest.cc

@@ -2649,8 +2649,8 @@ TEST(IsSubstringTest, GeneratesCorrectMessageForCString) {
 // Tests that IsSubstring returns the correct result when the input
 // argument type is ::std::string.
 TEST(IsSubstringTest, ReturnsCorrectResultsForStdString) {
-  EXPECT_TRUE(IsSubstring("", "", std::string("hello"), "ahellob"));
-  EXPECT_FALSE(IsSubstring("", "", "hello", std::string("world")));
+  EXPECT_TRUE(IsSubstring("", "", "hello", "ahellob"));
+  EXPECT_FALSE(IsSubstring("", "", "hello", "world"));
 }
 
 #if GTEST_HAS_STD_WSTRING
@@ -2707,8 +2707,8 @@ TEST(IsNotSubstringTest, GeneratesCorrectMessageForWideCString) {
 // Tests that IsNotSubstring returns the correct result when the input
 // argument type is ::std::string.
 TEST(IsNotSubstringTest, ReturnsCorrectResultsForStdString) {
-  EXPECT_FALSE(IsNotSubstring("", "", std::string("hello"), "ahellob"));
-  EXPECT_TRUE(IsNotSubstring("", "", "hello", std::string("world")));
+  EXPECT_FALSE(IsNotSubstring("", "", "hello", "ahellob"));
+  EXPECT_TRUE(IsNotSubstring("", "", "hello", "world"));
 }
 
 // Tests that IsNotSubstring() generates the correct message when the input
@@ -2719,8 +2719,7 @@ TEST(IsNotSubstringTest, GeneratesCorrectMessageForStdString) {
       "  Actual: \"needle\"\n"
       "Expected: not a substring of haystack_expr\n"
       "Which is: \"two needles\"",
-      IsNotSubstring("needle_expr", "haystack_expr", ::std::string("needle"),
-                     "two needles")
+      IsNotSubstring("needle_expr", "haystack_expr", "needle", "two needles")
           .failure_message());
 }
 
@@ -3579,13 +3578,13 @@ TEST(EditDistance, TestSuites) {
       {__LINE__, "A", "A", " ", ""},
       {__LINE__, "ABCDE", "ABCDE", "     ", ""},
       // Simple adds.
-      {__LINE__, "X", "XA", " +", "@@ +1,2 @@\n X\n+A\n"},
-      {__LINE__, "X", "XABCD", " ++++", "@@ +1,5 @@\n X\n+A\n+B\n+C\n+D\n"},
+      {__LINE__, "X", "XA", " +", "@@ -1 +1,2 @@\n X\n+A\n"},
+      {__LINE__, "X", "XABCD", " ++++", "@@ -1 +1,5 @@\n X\n+A\n+B\n+C\n+D\n"},
       // Simple removes.
-      {__LINE__, "XA", "X", " -", "@@ -1,2 @@\n X\n-A\n"},
-      {__LINE__, "XABCD", "X", " ----", "@@ -1,5 @@\n X\n-A\n-B\n-C\n-D\n"},
+      {__LINE__, "XA", "X", " -", "@@ -1,2 +1 @@\n X\n-A\n"},
+      {__LINE__, "XABCD", "X", " ----", "@@ -1,5 +1 @@\n X\n-A\n-B\n-C\n-D\n"},
       // Simple replaces.
-      {__LINE__, "A", "a", "/", "@@ -1,1 +1,1 @@\n-A\n+a\n"},
+      {__LINE__, "A", "a", "/", "@@ -1 +1 @@\n-A\n+a\n"},
       {__LINE__, "ABCD", "abcd", "////",
        "@@ -1,4 +1,4 @@\n-A\n-B\n-C\n-D\n+a\n+b\n+c\n+d\n"},
       // Path finding.
@@ -3655,8 +3654,7 @@ TEST(AssertionTest, EqFailure) {
       msg4.c_str());
 
   const std::string msg5(
-      EqFailure("foo", "bar", std::string("\"x\""), std::string("\"y\""), true)
-          .failure_message());
+      EqFailure("foo", "bar", "\"x\"", "\"y\"", true).failure_message());
   EXPECT_STREQ(
       "Expected equality of these values:\n"
       "  foo\n"
@@ -6717,6 +6715,9 @@ TEST(ColoredOutputTest, UsesColorsWhenTermSupportsColors) {
   SetEnv("TERM", "xterm-color");      // TERM supports colors.
   EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
 
+  SetEnv("TERM", "xterm-ghostty");    // TERM supports colors.
+  EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
+
   SetEnv("TERM", "xterm-kitty");      // TERM supports colors.
   EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
 

googletest_deps.bzl

@@ -17,9 +17,25 @@ def googletest_deps():
     if not native.existing_rule("abseil-cpp"):
         http_archive(
             name = "abseil-cpp",
-            sha256 = "b396401fd29e2e679cace77867481d388c807671dc2acc602a0259eeb79b7811",
-            strip_prefix = "abseil-cpp-20250127.1",
-            urls = ["https://github.com/abseil/abseil-cpp/releases/download/20250127.1/abseil-cpp-20250127.1.tar.gz"],
+            sha256 = "9b2b72d4e8367c0b843fa2bcfa2b08debbe3cee34f7aaa27de55a6cbb3e843db",
+            strip_prefix = "abseil-cpp-20250814.0",
+            urls = ["https://github.com/abseil/abseil-cpp/releases/download/20250814.0/abseil-cpp-20250814.0.tar.gz"],
+        )
+
+    if not native.existing_rule("bazel_features"):
+        http_archive(
+            name = "bazel_features",
+            sha256 = "9390b391a68d3b24aef7966bce8556d28003fe3f022a5008efc7807e8acaaf1a",
+            strip_prefix = "bazel_features-1.36.0",
+            url = "https://github.com/bazel-contrib/bazel_features/releases/download/v1.36.0/bazel_features-v1.36.0.tar.gz",
+        )
+
+    if not native.existing_rule("rules_cc"):
+        http_archive(
+            name = "rules_cc",
+            sha256 = "207ea073dd20a705f9e8bc5ac02f5203e9621fc672774bb1a0935aefab7aebfa",
+            strip_prefix = "rules_cc-0.2.8",
+            url = "https://github.com/bazelbuild/rules_cc/releases/download/0.2.8/rules_cc-0.2.8.tar.gz",
         )
 
     if not native.existing_rule("fuchsia_sdk"):