JUnit unable to find tests in Eclipse [duplicate]

Question

I have a strange issue with JUnit 4 tests in Eclipse 3.5 that I couldn't solve - any hints gratefully received!

Initially: I had a test suite working properly, with 100+ tests all configured with JUnit 4 annotations. I'd run these typically by right clicking on my source folder and selecting "Run as JUnit test". All worked perfectly.

Now: When I try to run the test messages all I get is an error "No tests found with test runner 'JUnit 4'".

Any idea what is happening? I simply can't work out what could have changed to make this fail.

My guess is that it is some configuration issue based on the build path or class path?

Answer 1

Had this issue too, doing a "Project --> Clean" and then trying to run the unit tests as usual already did it!