In my assignment it is not required. I do not include them in the final distribution. Though for the assignment I tried Test Driven Development, every method is covered by multiple tests - single and multithread versions for each.
I'm working on B&S system.(I think that i have done it except proper documentation) I would like to share my Junit tests for data level.(Basic) And get some other tests just not to miss any point.
Yes you can use it, but you are not allowed to include the tests in the final assignment code you are uploading, I think. That is because JUnit is not core java.