Mocking Interface Events Error

Question

Hello,

I'm trying to mock an interface's events like the following:

[TestMethod]
public void NeedingDataFiresEvents()
{
    //Arrange
    var service = MockRepository.GenerateMock<IService>();
    service.Expect(i => i.GetValue()).Return(5);
    var view = MockRepository.GenerateMock<ILogView>();
    view.NeedData += null;
    LastCall.IgnoreArguments();
    var evt = LastCall.GetEventRaiser();

    var presenter = new LogPresenter(view, service);
    var args = new DataEventArgs();

    //Act
    evt.Raise(view, args);

    //Assert
    Assert.AreEqual(1, args.Results.Count());
}

The error I'm getting is: System.InvalidOperationException: Invalid call, the last call has been used or no call has been made (make sure that you are calling a virtual (C#) / Overridable (VB) method).

I'm not sure why... what am I doing wrong? What would I apply virtual too, if I'm not actually instantiating the view... Something in the presenter?

Answer 1

OK, figured it out, this was the answer, to use the MockRepository instance: http://chakkaradeep.wordpress.com/category/mock-objects/