@Colin: I’ve been writing more tests with SevenMock. I’ll sure post my findings on the Wiki.

I’d certainly be interested to know if you or anyone else has thoughts on whether/how SevenMock could be extended. I’m keen to keep it simple, but a couple of ideas that I’ve been working on are a test recorder and flexible sequencing.

I’m using the project wiki to push some ideas about: http://seven-mock.wiki.sourceforge.net/Features+and+Improvements

If it sounds as if you have not understood how your persistence layer works. A value type (like an integer) should always implement equals and hashCode. An entity should not, and should only be compared by reference. So jMock does the right thing and, by failing the test, is showing you that there is a problem in the code.