Mocking the CAL EventAggregator with Moq
- by toxvaerd
Hi,
I'm using the Composite Application Library's event aggregator, and would like to create a mock for the IEventAggregator interface, for use in my unit test.
I'm planning on using Moq for this task, and an example test so far looks something like this:
var mockEventAggregator = new Mock<IEventAggregator>();
var mockImportantEvent = new Mock<ImportantEvent>();
mockEventAggregator.Setup(e => e.GetEvent<SomeOtherEvent>()).Returns(new Mock<SomeOtherEvent>().Object);
mockEventAggregator.Setup(e => e.GetEvent<SomeThirdEvent>()).Returns(new Mock<SomeThirdEvent>().Object);
// ...
mockEventAggregator.Setup(e => e.GetEvent<ImportantEvent>()).Returns(mockImportantEvent.Object);
mockImportantEvent.Setup(e => e.Publish(It.IsAny<ImportantEventArgs>()));
// ...Actual test...
mockImportantEvent.VerifyAll();
This works fine, but I would like know, if there is some clever way to avoid having to define an empty mock for every event-type my code might encounter (SomeOtherEvent, SomeThirdEvent, ...)? I could of course define all my events this way in a [TestInitialize] method, but I would like to know if there is a more clever way? :-)
