How do you write test cases for play framework modules and test them independently?

I am currently using play 1.3.x and I want to write unit test to my modules and run the tests independently or even running module tests when I run application tests is fine, but I cant seem to find a good way to do that.

However, I do know how to add and work with play application (not module) tests and test cases.

Any direction regarding this would be great.