c# - How to mock extension methods with Rhino Mock?

Question

I have extended objects of type IDataReader with some extension methods that I needed. The problem is now when I try to mock the IDataReader, the extended method is not included in the mock so when the row Expect.Call(reader.ExtensionMethod()).Return(someValue) is reach the ExtensionMethod is executed which is not what I want! I want that call to be record and when the extension method is call from somewhere else I want it to return someValue.

Does anyone know how to get around this?

Answer 1

Disclosure: I work for Telerik.

Extension methods are in fact static methods concealed as instance methods. RhinoMock cannot mock static methods and there's no way you can do it, unless you use another mocking library, which uses a profiler.

Such a library is JustMock by Telerik.