gistfile1.txt

[Test]
public void Some_Test_Rhino()
{
    // Arrange
    var foo = MockRepository.GenerateStub<IFoo>();
    var someClass = new SomeClass(foo);

    // Act
    someClass.DoWork();

    // Assert
    foo.AssertWasCalled(x => x.Bah());
}

[Test]
public void Some_Test_NSubstitute()
{
    // Arrange
    var foo = Substitute.For<IFoo>();
    var someClass = new SomeClass(foo);

    // Act
    someClass.DoWork();

    // Assert
    foo.Received().Bah();
}