We'd like to run tests which are defined in libraries. We can do it just fine, but IDEA makes it seem like there's a problem, by placing warnings and red X's around. (If you'd like more detail on the use case: we have a custom build system and we don't actually use IDEA to build at all anymore. Our build tool updates the IDEA project with the jars it produces as module libraries, and we run tests from these library jars.)