[CMake] Testing our CMake Modules

[Kai Wolf]

They (Kitware) typically write custom .cmake files to test the function/macro under test coupled together with a CMakeLists.txt file and/or a small C/C++ implementation file. Look here [1] for some examples, for instance CMake/Tests/MacroTest.

Greetings,

Kai

http://kai-wolf.me
http://effective-cmake.com

[1] https://github.com/Kitware/CMake/tree/master/Tests

> Am 10.12.2018 um 13:30 schrieb Ramold, Felix <Felix.Ramold at kuka.com>:
> 
> We created multiple additional functions for CMake. They became quite a lot, and we need to (unit) test them.
> There are simple ones, that are only variable bases like:
> function(join_list LIST GLUE)
> These can be tested with a custom CMake Script, that checks the results. For this we also wrote a set of assert-macros.
> This becomes way harder when the functions are target based:
> function(target_my_custom_property_set TARGET VALUE)
> We need a multiple CMakeLists.txt Files that need to be configured. Configuration must succeed or fail with specified messages. Also the result files must be checked.
> I wonder, is there an easier way? Is there a existing framework? How does Kitware test the shipped modules?
> Note: My original Stackoverflow question: https://stackoverflow.com/questions/51948060/testing-our-cmake-modules
> 
> Thanks,
> Felix
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