GuiceBerry brings the joys of dependency injection to your test cases and test infrastructure. It leverages Guice to accomplish this. It allows you to use a composition model for the services your test needs, rather than the traditional extends MyTestCase approach.
GuiceBerry does not supplant your JUnit testing framework -- it builds on top of it (and works around it, when necessary), so you can run your tests normally, from your favorite command line or IDE environment.
Find a step-by-step tutorial at:
http://docs.google.com/Doc?id=dddf9mmq_2sjv9nkk4
There's also a presentation given by Zorzella available at http://www.youtube.com/watch?v=4E4672CS58Q. The slides for this can be found at http://docs.google.com/Presentation?id=dddf9mmq_4c6vw4pf2
News: GuiceBerry 2.0 released! See release notes at: