Can't mock MouseUp event on UserControl?

[Claudio Lassala]

Hi all,

first and foremost, I'm new to Rhino Mocks, so bear with me
there... :)

I have a UserControl class in a WPF app that looks sort of like this:

public class SelectorDisplayView : UserControl
{
public bool Active { get; set; }

protected void SelectorDisplayView_MouseUp(object sender,
MouseButtonEventArgs e)
{
this.Active = true;
}
}

I'm trying to write a test to make sure the Active property gets set
whenever the control has been clicked. I thought I could use Rhino's
EventRaiser to raise the MouseUp event and test my code, so I wrote
the test like so:

[TestMethod]
public void
Active_property_should_be_set_to_true_when_view_has_been_clicked()
{
var mockRepository = new MockRepository();
m_View = mockRepository.PartialMock<SelectorDisplayView>
();

m_View.MouseUp += delegate { };
var mouseUpRaiser = LastCall.IgnoreArguments
().GetEventRaiser();

mockRepository.ReplayAll();

bool eventWasRaised = false;
m_View.ActiveChanged += (sender, e) => eventWasRaised =
true;

mouseUpRaiser.Raise(m_View, EventArgs.Empty);

Assert.IsTrue(eventWasRaised);

mockRepository.VerifyAll();
}

The test fails with the following error:

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 what I'm doing wrong here... any clue?

[Ayende Rahien]

MouseUp is likely not virtual

[Claudio Lassala]

I'm confused... so the event has to be flagged virtual in the class
for one to be able to raised it using the EventRaiser?

[Ayende Rahien]

Yes