I have a very simple jUnit test class named LibraryTest with a single test called testSomeLibraryMethod. This test simply does an assertTrue on a method that returns true.
If I right click and select Run 'LibraryTest' the test runs fine, but I see a message in blue in the console that says "Empty test suite". I know the test is empty because if I change the test to assertTrue that the method returns false, the test fails as expected, but I still see the "Empty test suite" message. Clearly the suite isn't empty as the test failed. I'm guessing I'm not following some naming convention, only I can't figure out which one.
If it'll help I can post the whole project as this is a simple test project to help debug the issue.