I am being asked to use Jenkins to test code coverage for a Java Project. The issue is I have never used Jenkins and have scarcely little experience with actual code coverage. I have been searching a bit and I have come across JaCoCo and Cobertura as plugs. The issue is everything talking about them is above my head at this point. My question is this, as I understand it Jenkins and JaCoCo/Cobertura are used to run tests(Junit?), and report on how well the handle my code, but where do they get the test? Obviously I should make them, but what kind of files are these(again Junit?) and how do the tools get them?
If you are feeling generous, are there any good introduction level tutorials for these tools?