What is the dfference between mocking classes and interfaces?

Question

What's the difference between mocking classes and interfaces in Rhino Mocks?

Answer 1

You can't mock concrete classes per se, unless the class is abstract or has virtual methods. You can fake the contract of the abstract class, or override virtual methods with a faked method using Rhino Mocks.

Mocking an interface simply means you are defining a fake implementation of said interface.