Brett shared this post from the Google Open Source blog. While I'm not into Python, a mock object generator seems totally awesome. (Why didn't anyone tell me about this earlier?) Anyways, the Google Blog post linked to EasyMock, which is a mock object generator for Java. Now that looks really useful, since I spend my day job hacking on a very large Java system with not enough tests. EasyMock has quickly made it onto the short list of things I need to look into.