Cmake add test example driver#

The first, perhaps most obvious, and perhaps worst issue is that test inspection happens during the CMake configure stage. Unfortunately, this approach comes with several drawbacks. By doing so, the user can see from the CTest summary (or on the CDash page which lists failing tests) which specific Google Test test case or cases failed. This command, provided by the GoogleTest module, inspects the test sources to extract individual test cases, in order to create a separate CTest test for each Google Test test case. While this works, it is not very granular if the test fails, there is very little information about the location of the failure short of inspecting the test output. This will create a single CTest test that runs all Google Test test cases in the executable. The simplest way to register a Google Test test with CTest is to simply use add_test to add a test that runs the test executable with no arguments. The main purpose of CMake’s Google Test support is to help Google Test and CTest “play together”. Even in the case of a single text executable, CTest is still useful for submitting results to CDash. Most projects will have more than one test executable, and may have tests that are not C++ executables, and will therefore have need of CTest. Although Google Test does provide some overlap in that both it and CTest have notions of selecting tests or test cases to execute, the two tools are complementary. Google Test is a tool for writing individual C++ tests. all tests within a project), and for submitting build and test results to CDash. CTest is a tool for managing and executing a complete suite of tests (i.e. Myths and OverviewĪ misconception I have encountered several times is that Google Test “replaces” CTest. Compared to writing unit tests without a framework, Google Test allows developers to write tests much faster without sacrificing quality, often resulting in tests with more useful diagnostics on failure compared to tests written without a framework, or with a lesser-quality framework. Google Test is a C++ unit testing framework that makes it easy to write and execute unit tests. The source is on the Github repo.If you’ve written unit tests in C++, you may have heard of Google Test.

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Nevertheless, I have been active in the C++ community for a long time. I am pretty tech stack agnostic and like to work with and appreciate different programming languages and APIs. My primary interests include Computer Graphics and Programming Languages.

In extra, I also help organizing #include. I founded Graphics Programming Virtual Meetup in 2020 and also co-organize Programming Language Virtual Meetup since 2022.

To enable ctest, we need CMake to realize our tests executable is for tests.

Cmake add test example driver#

CTest is the test driver program that CMake provides. We can even configure our IDE to run the test excutable whenever we compile. Now we can run the test program manually by executing the test executable. LOG_DOWNLOAD ON ) # Expose required variable (CATCH_INCLUDE_DIR) to parent scope ExternalProject_Get_Property (catch source_dir ) set (CATCH_INCLUDE_DIR $ ) # Add test executable add_executable (tests testmain.cpp testA.cpp testB.cpp ) target_link_libraries (tests Catch CommonSourceCode ) ctest support Include (ExternalProject ) find_package (Git REQUIRED ) ExternalProject_Add (