Moq Event Aggregator Is it possible

Question

Wondering if its possible to Moq the Prism EventAggregator Let\'s take the EventAggregator Quickstart they have

     [TestMethod]
      public void Presente         


        

Answer 1

Yes, it's possible, you just need to set it up to return a mock event on which you can verify that Publish or Subscribe was called:

var fakeEventAggregator = new Mock<IEventAggregator>();
var fakeMyEvent = new Mock<MyEvent>();

fakeEventAggregator.
    Setup(x => x.GetEvent<MyEvent>()).
    Returns(fakeMyEvent.Object);

var test = new Foo(fakeEventAggregator.Object);
test.PublishAnEvent();

fakeMyEvent.Verify(x => x.Publish(It.IsAny<MyEventArgs>()));