Does JUnit have some weird 30 character length limit on the name of your class?

Question

I have a class that I made for some unit tests. Everything was going swimmingly until I changed the name of the class to match the class that I was testing suffixed with TestCase. All of a sudden every time I tried to run the test case in Eclipse I get a "There is no input configuration for this type".

Someone then suggested that there is a 30 character length limit on the name of the class. I had a look at the class name and it was 32 characters long. I then deleted two characters off the end and tried again and everything worked. I put them back and it stopped working.

Is there an explanation for this?

EDIT:

In response to some of the comments. It is Galileo, using Windows XP, JUnit 4.4.

EDIT 2:

Sorry guys. I guess I was wrong. The pattern seems to be that JUnit/Eclipse does not like my class name being TestCase. As soon as I take the TestCase part away it works. It works with a massively long string, short strings and everything in between. The name can be anything like ABCTestCase it just CANNOT be for some reason TestCase.

Answer 1

Check your run Configuration under Run -> Run... Your Test has a Configuration there. Check the "Test class" field.

Answer 2

By default I believe the JUnit runners are set to look for *Test files, so it will filter out TestCase. People often use *TestCase as a base class without any tests of its own. Not sure if that's what you're running into. If so, it's configurable in the runner.

Answer 3

Turns out that it was because I was extending TestCase which makes the JUnit runner think it is still version 3. Even if you tell it to use version 4.