From 52e62ccbf447708034fb267712f0def824dfe437 Mon Sep 17 00:00:00 2001
From: Denis Blank <denis.blank@outlook.com>
Date: Wed, 1 Mar 2017 13:50:51 +0100
Subject: [PATCH] Split the unit test type instantiations for reducing memory
 usage

---
 test/playground/CMakeLists.txt      |  3 +++
 test/unit-test/CMakeLists.txt       | 41 +++++++++++++++++------------
 test/unit-test/test-continuable.hpp | 14 +++++++---
 3 files changed, 37 insertions(+), 21 deletions(-)

diff --git a/test/playground/CMakeLists.txt b/test/playground/CMakeLists.txt
index 461b71c..725be13 100644
--- a/test/playground/CMakeLists.txt
+++ b/test/playground/CMakeLists.txt
@@ -1,4 +1,7 @@
 add_executable(test-playground
+  ${CMAKE_SOURCE_DIR}/include/continuable/continuable.hpp
+  ${CMAKE_SOURCE_DIR}/include/continuable/continuable-base.hpp
+  ${CMAKE_SOURCE_DIR}/include/continuable/continuable-testing.hpp
   ${CMAKE_CURRENT_LIST_DIR}/test-playground.cpp)
 
 target_link_libraries(test-playground
diff --git a/test/unit-test/CMakeLists.txt b/test/unit-test/CMakeLists.txt
index 95dc8ff..335f2d6 100644
--- a/test/unit-test/CMakeLists.txt
+++ b/test/unit-test/CMakeLists.txt
@@ -1,19 +1,26 @@
-add_executable(test-continuable
-  ${CMAKE_SOURCE_DIR}/include/continuable/continuable.hpp
-  ${CMAKE_SOURCE_DIR}/include/continuable/continuable-base.hpp
-  ${CMAKE_SOURCE_DIR}/include/continuable/continuable-testing.hpp
-  ${CMAKE_CURRENT_LIST_DIR}/test-continuable.hpp
-  ${CMAKE_CURRENT_LIST_DIR}/test-continuable-base.cpp
-  ${CMAKE_CURRENT_LIST_DIR}/test-continuable-connection-all.cpp
-  ${CMAKE_CURRENT_LIST_DIR}/test-continuable-connection-any.cpp
-  ${CMAKE_CURRENT_LIST_DIR}/test-continuable-connection-seq.cpp
-  ${CMAKE_CURRENT_LIST_DIR}/test-continuable-erasure.cpp
-  ${CMAKE_CURRENT_LIST_DIR}/test-continuable-recursion.cpp)
+foreach(STEP RANGE 5)
+  set(PROJECT_NAME test-continuable-${STEP})
+  set(TEST_NAME continuable-unit-tests-${STEP})
 
-target_link_libraries(test-continuable
-  PRIVATE
-    gtest-main
-    continuable)
+  add_executable(${PROJECT_NAME}
+    ${CMAKE_CURRENT_LIST_DIR}/test-continuable.hpp
+    ${CMAKE_CURRENT_LIST_DIR}/test-continuable-base.cpp
+    ${CMAKE_CURRENT_LIST_DIR}/test-continuable-connection-all.cpp
+    ${CMAKE_CURRENT_LIST_DIR}/test-continuable-connection-any.cpp
+    ${CMAKE_CURRENT_LIST_DIR}/test-continuable-connection-seq.cpp
+    ${CMAKE_CURRENT_LIST_DIR}/test-continuable-erasure.cpp
+    ${CMAKE_CURRENT_LIST_DIR}/test-continuable-recursion.cpp)
 
-add_test(NAME continuable-unit-tests
-  COMMAND test-continuable)
+  target_link_libraries(${PROJECT_NAME}
+    PRIVATE
+      gtest-main
+      continuable)
+
+  target_compile_definitions(${PROJECT_NAME}
+    PUBLIC
+      -DUNIT_TEST_STEP=${STEP})
+
+  add_test(
+    NAME ${TEST_NAME}
+    COMMAND ${PROJECT_NAME})
+endforeach()
diff --git a/test/unit-test/test-continuable.hpp b/test/unit-test/test-continuable.hpp
index 4c42b20..28afa23 100644
--- a/test/unit-test/test-continuable.hpp
+++ b/test/unit-test/test-continuable.hpp
@@ -148,20 +148,26 @@ template <typename Provider> struct provide_continuation_seq_right {
 // Feel free to uncomment more tests, however this will increase the
 // build time significantly.
 using single_types = ::testing::Types<
+#if UNIT_TEST_STEP == 1
   provide_copyable,
   // provide_unique,
   // provide_copyable_erasure,
-  provide_unique_erasure,
+  provide_unique_erasure
+#elif UNIT_TEST_STEP == 2
   // Some instantiations out commented for compilation speed reasons
   // provide_continuation_and_left<provide_copyable>,
-  provide_continuation_and_left<provide_unique>,
+  provide_continuation_and_left<provide_unique>
   // provide_continuation_and_left<provide_copyable_erasure>,
   // provide_continuation_and_left<provide_unique_erasure>,
   // provide_continuation_and_right<provide_copyable>,
-  provide_continuation_and_right<provide_unique>,
+#elif UNIT_TEST_STEP == 3
+  provide_continuation_and_right<provide_unique>
   // provide_continuation_and_left<provide_copyable_erasure>,
-  // provide_continuation_and_left<provide_unique_erasure>
+#elif UNIT_TEST_STEP == 4
+  provide_continuation_and_left<provide_unique_erasure>
+#elif UNIT_TEST_STEP == 5
   provide_continuation_seq_right<provide_unique>
+#endif
 >;
 // clang-format on