As a first attempt, I expected this to work:
However, running this produces a failure in the infrastructure:
What's going on here is that when scala is run in single-file script mode, it implicitly wraps all of the declarations within the declaration of an anonymous singleton object (
Main$$anon). When JUnit tries to reflectively create an ArithmeticTest object, it runs into the fact that, from the Java perspective, ArithmeticTest is a non-static inner class of
Main$$anon. To get around this requires a bit of a dance, luckily made fairly short due to Scala's compact OO verbiage:
If I find myself doing this often, I imagine I'll be pulling this out into an importable library. Share and Enjoy.