Support for private tests

[Saviq]

It would be nice to be able to support compositor-private tests.

Plausible soluition would be to allow injecting external test suites.

[i509VCB]

It would be neat if this could also allow compositor private tests in another language (possibly Rust for smithay).

[bwidawsk]

Has any work progressed here since the original bug was filed? We're considering using WLCS in Chrome, and this would be a mandatory prerequisite.

If there are ideas on proof of concepts, I can consider trying to implement those.

[AlanGriffiths]

No, I don't think anyone has had the motivation.

It would probably be easiest to fork the project and automate rebasing when there's a tag upstream.

To do it at runtime, I guess the trick would be an option to load a "private tests" shared library that contains googletest fixtures. (I'm not sure what is needed to ensure they register in the right place, but it ought to be possible.)

To write useful tests would require linking against some of the wlcs code and require some restructuring of the project including publishing headers.