Add 'run haros as a test' function to CMake extras file?

[gavanderhoorn]

This would be similar to how roslint works where it adds a dependency to run_tests such that it gets run whenever run_tests is built.

See wiki/roslint - Reference for how that is used (the roslint_add_test entry).

Related code: https://github.com/ros/roslint/blob/6c963f3010c94d4b13123f468ce8ca4844ee20c4/cmake/roslint-extras.cmake.em#L70-L75.

[nlimpert]

I actually like the idea of using haros as a doc job in terms of being an independent static analysis tool to measure quality.
So I'm not entirely sure whether haros should be able to break a build.

[gavanderhoorn]

It would be by choice of users, as they'd have to explicitly call haros_add_test() in their CMakeLists.txt.