備忘録 GoogleTest&CMake&CTest

参考 : https://google.github.io/googletest/quickstart-cmake.html

• フォルダ構成

project
  +-- src : こっちに本体
  +-- test
       CMakeLists.txt
       +-- sub1
           CMakeLists.txt
           test_X.cpp
       +-- sub2
           CMakeLists.txt
           test_Y.cpp

CMakeLists.txt

test/CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

enable_testing()
project(test_project)

# GoogleTest requires at least C++14
set(CMAKE_CXX_STANDARD 14)

include(FetchContent)
FetchContent_Declare(
  googletest
  GIT_REPOSITORY https://github.com/google/googletest.git
  GIT_TAG release-1.12.1
)
# For Windows: Prevent overriding the parent project's compiler/linker settings
set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
FetchContent_MakeAvailable(googletest)

add_subdirectory(sub1)
add_subdirectory(sub2)

test/sub1/CMakeLists.txt

enable_testing()

add_executable(
  test_sub1
  test_X.cpp
)
target_link_libraries(
  test_sub1
  GTest::gtest_main
)

include(GoogleTest)
gtest_discover_tests(test_sub1)

test/sub2/CMakeLists.txt

enable_testing()

add_executable(
  test_sub2
  test_Y.cpp
)
target_link_libraries(
  test_sub2
  GTest::gtest_main
)

include(GoogleTest)
gtest_discover_tests(test_sub2)

• テストコード

test/sub1/test_X.cpp

#include <gtest/gtest.h>

// Demonstrate some basic assertions.
TEST(HelloTest1, BasicAssertions) {
  // Expect two strings not to be equal.
  EXPECT_STRNE("hello", "world");
  // Expect equality.
  EXPECT_EQ(7 * 6, 42);
}

test/sub2/test_Y.cpp

#include <gtest/gtest.h>

// Demonstrate some basic assertions.
TEST(HelloTest2, BasicAssertions) {
  // Expect two strings not to be equal.
  EXPECT_STRNE("hello", "world");
  // Expect equality.
  EXPECT_EQ(7 * 6, 42);
}

• ビルド&テスト実行

$ cmake -S . -B build
$ cmake --build build
$ cd build && ctest