Catch lib (unit testing) and CTest (CMake) integration

I'm looking for successful example of Catch CatchLib integration with CMake test (Ctest) . as I understand this is additional cmake script which has to parse application ouput? Did someone already written this? probably shared this?

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update (solution has been found) :

I've committed cmake script to CatchLib , for the integration Catch with CTest. this is a simplified version of Fraser99's cmake script here

Answers


Integrating Catch with CMake is rather simple, as it's a header-only library.

Here's a quick rundown of what you have to do:

You can either assume that the Catch sources are already installed on the build machine or use ExternalProject for fetching them as part of the build process.

In either case, you will end up with the Catch header files in some known directory on your build machine. I would recommend creating an interface target for making this information known to your test executables:

add_library(Catch INTERFACE)
target_include_directories(Catch INTERFACE ${YOUR_CATCH_INCLUDE_DIR})

That way, you can simply specify Catch as a dependency to target_link_libraries:

add_executable(my_test ${MY_TEST_SOURCES})
target_link_libraries(my_test Catch)

As usual with CMake, add_test takes care of introducing the tests to CTest:

enable_testing()
add_test(NAME MyAwesomeTest COMMAND my_test)

And that's it already. Run make test on the built project to run your tests.

I have a project on Github that does this if you need to see a complete working example.


Install catch with:

 $ git clone https://github.com/catchorg/Catch2 <catch_src_dir>
 $ mkdir <catch_bin_dir>
 $ cd <catch_bin_dir>
 $ cmake -DBUILD_TESTING:BOOL=FALSE <catch_src_dir>
 $ make
 $ make install

Then do add the following to the CMakeLists.txt:

find_package(Catch2 REQUIRED)
target_link_libraries(tests Catch2::Catch2)

See here.


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