68 lines
2.1 KiB
Markdown
68 lines
2.1 KiB
Markdown
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# GoogleTest: Submodule method (preferred)
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To use this method, just checkout GoogleTest as a submodule:[^1]
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```cmake
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git submodule add --branch=release-1.8.0 ../../google/googletest.git extern/googletest
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```
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Then, in your main `CMakeLists.txt`:
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```cmake
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option(PACKAGE_TESTS "Build the tests" ON)
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if(PACKAGE_TESTS)
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enable_testing()
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add_subdirectory(tests)
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endif()
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```
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As mentioned before, you have to do the `enable_testing` in your main CMakeLists. Now, in your tests directory:
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```cmake
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add_subdirectory("${PROJECT_SOURCE_DIR}/extern/googletest" "extern/googletest")
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```
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If you did this in your main CMakeLists, you could use a normal add_subdirectory; the extra path here is needed to correct the build path because we are calling it from a subdirectory.
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The next line is optional, but keeps your `CACHE` cleaner:
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```cmake
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mark_as_advanced(
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BUILD_GMOCK BUILD_GTEST BUILD_SHARED_LIBS
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gmock_build_tests gtest_build_samples gtest_build_tests
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gtest_disable_pthreads gtest_force_shared_crt gtest_hide_internal_symbols
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)
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```
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If you are interested in keeping IDEs that support folders clean, I would also add these lines:
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```cmake
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set_target_properties(gtest PROPERTIES FOLDER extern)
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set_target_properties(gtest_main PROPERTIES FOLDER extern)
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set_target_properties(gmock PROPERTIES FOLDER extern)
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set_target_properties(gmock_main PROPERTIES FOLDER extern)
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```
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Then, to add a test, I'd recommend the following macro:
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```cmake
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macro(package_add_test TESTNAME)
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add_executable(${TESTNAME} ${ARGN})
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target_link_libraries(${TESTNAME} gtest gmock gtest_main)
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add_test(${TESTNAME} ${TESTNAME})
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set_target_properties(${TESTNAME} PROPERTIES FOLDER tests)
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endmacro()
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package_add_test(test1 test1.cpp)
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```
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This will allow you to quickly and simply add tests. Feel free to adjust to suit your needs. If you haven't seen it before, `ARGN` is "every argument after the listed ones".
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[^1]: Here I've assumed that you are working on a GitHub repository by using the relative path to googletest.
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[CLIUtils/cmake]: https://github.com/CLIUtils/cmake
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[GoogleTest]: https://github.com/google/googletest
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[DownloadProject]: https://github.com/Crascit/DownloadProject
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