When using a mocking tool like RhinoMocks, one of the features that it can provide is the ability to A) create a stub of an object and B) set expectations on Method/Property calls that are part of that method.  Doing this is pretty easy, but like all things there are some ‘gotcha’s’. 

Below is a step by step on how to set expectations on a stub

1. Create your mock Repository
   MockRepository mocker = new MockRepository();
    
2. Create your stub
   ISomeInterface provider = mocker.Stub< ISomeInterface >();
   
   Note that I am using the mocker instance NOT MockRepository.GenerateStub.  This is because if you use the static method on the MockRepository object, you WILL NOT have your expectations set in the runtime engine correctly.
    
3. Set your expectations
   Expect.Call(provider.SomeMethod(string.Empty, string.Empty)).IgnoreArguments().Return(false);
   
   
4. Set everything in the Mock Engine
   mocker.ReplayAll();
   
   
5. Test your stubbed expectation
   bool testValue = provider.SomeMethod();
   
   
6. Check to see if your expectations were met
   mocker.VerifyAll();
    
   

There you go, you now have a stub with expectations set.

*** Note *** Please pay attention to the fact that if you use MockRepository.GenerateStub your expectation will NOT work correctly.

Till next time,