I had to get the hang of jMock-style testing through the usage of the pmock library. But it seems to work out pretty well.
See some of my test cases at http://springpython.python-hosting.com/browser/trunk/src/springpython/test/databaseCoreTestCases.py. That should provide a hearty sample of uses for this mock set. It easily let me throw away the real database and conclude unit testing much faster. -- http://mail.python.org/mailman/listinfo/python-list