RhinoMock vs. TypeMock vs. NUnit's Mocking?

Question

I am just starting to do Test Driven Development, and I am wondering the major differences between RhinoMock, TypeMock, and NUnit\'s built-in mocking?

Any informatio

Answer 1

A video called TDD - Understanding Mock Objects by Roy Osherove is very helpful in learning the differences of the different mocking libraries. He doesn't go in great detail of every aspect, but enough for you to understand. I hope this helps. Roy is also the Chief Architect for TypeMock and is a very influential figure in the unit testing arena. I couldn't recommend this video enough for someone who wants to learn how to use mocking and also learn about the library's available.

The main difference between TypeMock and the open-source library's is that TypeMock uses the Profiler API provided by Microsoft instead of a dynamic proxy. This allows TypeMock to mock concrete classes and static methods. In case you aren't sure what the profiler is, it is the same API that is used by tools like JetBrain's dotTrace and RedGate's Ants .Net profilers. TypeMock just uses the API in a different way to fake(mock) what you tell it to.

@RichardOD, thanks for the reminder, his book "The Art of Unit Testing" goes into greater detail where the video doesn't. I own the book and it is very informative.