Unit testing EJB 3

My colleague at Tieturi, Arto Santala, has written a series of three blog entries about unit testing in EJB 3 environment. It is in Finnish but you might get the point through the code examples without our language.As an idea unit testing has been known and used for decades but examples in blogosphere focus on simple situations instead of complex cases of real life. When we do unit and acceptance testing in industrial scale, we need to go deeper considerations about maintainability and performance of the test harness.