For those of you who are attending my TDD class tonight, you’ll realize that I mentioned several times that learning to use test doubles effectively takes time… I’ve been using test doubles in my tests for half a decade and I still learn something new everytime.
I’ve included some links to material to help you learn more but it will take time for it to soak in. 
- Mock Roles Not Objects (related presentation)
- XUnit Patterns on Test Doubles
- Mocks Aren’t Stubs
- Inversion of Control (not about test doubles per se, but plays a large part in using test doubles)
