RhinoMocks: Clear or reset AssertWasCalled()

Question

How can I verify a mock is called in the "act" portion of my test ignoring any calls to the mock in the "arrange" portion of the test.

[Test]
public void ShouldOpenThrottleWhenDrivingHome()
{
    var engineMock = MockRepository.GenerateStub<IEngine>();
    var car = new Car(engineMock);
    car.DriveToGroceryStore(); // this will call engine.OpenThrottle

    car.DriveHome();

    engine.AssertWasCalled(e => e.OpenThrottle());
}

I'd prefer not to try an inject a fresh mock or rely on .Repeat() because the test then has to know how many times the method is called in the setup.

Answer 1

In these situations I use a mock instead of a stub and combination of Expect and VerifyAllExpectations:

//Arrange
var engineMock = MockRepository.GenerateMock<IEngine>();
var car = new Car(engineMock);
car.DriveToGroceryStore(); // this will call engine.OpenThrottle

engineMock.Expect(e => e.OpenThrottle());

//Act
car.DriveHome();

//Assert
engineMock.VerifyAllExpectations();

In this case the expectation is placed on the method after the arranging is complete. Sometimes I think of this as its own testing style: Arrange, Expect, Act, Assert