You will be presented with short test cases that can either work or not work. If you wish to skip a test case, simply do not select either.
Please use the comments fields below the tests whenever you wish to note what went wrong or when something seems odd.
Furthermore it is highly encouraged that you file bugs about incorrect behavior. But most important when you encouter a crash, please report it as a bug, there is no guarantee that anyone else will get this crash and report the bug.