How to mock a class that implements multiple interfaces

Question

How to mock the following class:

UserRepository : GenericRepository, IUserRepository


public class GenericRepository : IGenericRe         


        

Answer 1

If I understand the question correctly, you want have a single mock instance of UserRepository, and for the purposes of a test, setup calls to methods from both the IGenericRepository interface and the IUserRepository interface.

You can implement multiple interfaces with a single mock instance like this:

var genericRepositoryMock = new Mock>();
genericRepositoryMock.Setup(m => m.CallGenericRepositoryMethod()).Returns(false);

var userRepositoryMock = genericRepositoryMock.As();
userRepositoryMock.Setup(m => m.CallUserRepositoryMethod()).Returns(true);

However, as D Stanley pointed out, the need to do this is probably an indication that there is a flaw in your design.