JavaTest is a greate test harness. It is, at the same time, user friendly, very powerful and very extensible.

On a few occasions I was asked by teams who were starting new test suites of what test harness was better for them to use. I always recommended JavaTest.

The entry barrier to it is pretty high, however. One, to start, would have to implement (or choose) a test finder, an interview and a test script - this is the minimum.

What would help a lot is a sample test suite.

A small test suite with few fake tests but all the pieces put together, so a user have something to start with and twick it further the way he likes.