When to Expect and When to Stub?

Question

I use NMock2, and I\'ve drafted the following NMock classes to represent some common mock framework concepts:

• Expect: this specifies what a mock

Answer 1

Well... IMHO it can't be simpler: if your test is about ensuring your Presenter will call Save, do an Expect. if your test is about ensuring your Presenter will handle exception gracefully if Save throws up, do a Stub.

For more details, check out this podcast by Hanselman and Osherove (author of The Art Of Unit Testing)