Mocking classes that aren't interfaces

Question

I\'ve been writing some providers in c# that inherit from the providerbase class. I\'ve found that it\'s hard to write tests that use the providers as most mocking framework

Answer 1

I know Rhino mocks can mock classes too, most other mocking frameworks should have no problems with this either.
Things too keep in mind: The class can't be sealed. You need to mark methods you want to mock virtual and the class needs a constructor with no arguments this can be protected, private won't work. (just tried this out)

Keep in mind that the mocking framework will just create a class that inherits from your class and creates an object of that type. So constructors will get called. This can cause unexpected behaviour in your tests.