起订量事件聚合器是否可能

Question

想知道是否可以最小起订量 Prism EventAggregator 让我们以 EventAggregator 快速入门为例，他们

     [TestMethod]
      public void PresenterPublishesFundAddedOnViewAddClick()
      {
         var view = new MockAddFundView();
         var EventAggregator = new MockEventAggregator();
         var mockFundAddedEvent = new MockFundAddedEvent();
         EventAggregator.AddMapping<FundAddedEvent>(mockFundAddedEvent);
         var presenter = new AddFundPresenter(EventAggregator);
         presenter.View = view;
         view.Customer = "99";
         view.Fund = "TestFund";
         view.PublishAddClick();
         Assert.IsTrue(mockFundAddedEvent.PublishCalled);
         Assert.AreEqual("99", mockFundAddedEvent.PublishArgumentPayload.CustomerId);
      }       

    I have tried to convert the above using moq but I get problems 

有 MockEventAggregator。我如何使用 Moq 来做到这一点？

public class MockEventAggregator : IEventAggregator
{
    Dictionary<Type, object> events = new Dictionary<Type, object>();
    public TEventType GetEvent<TEventType>() where TEventType : EventBase
    {
        return (TEventType)events[typeof(TEventType)];
    }

    public void AddMapping<TEventType>(TEventType mockEvent)
    {
        events.Add(typeof(TEventType), mockEvent);
    }
}

有人使用过 MOQ 和 EventAggregator 吗？有什么例子吗？ 非常感谢

编辑

遵循 GrameF 答案我添加了我的代码但仍然不起作用。你能帮忙吗

            [TestMethod]
            public void PresenterPublishesFundAddedOnViewAddClick2()
            {

                //Arrange
                var view = new Mock<IAddFundView>();
                var fakeEventAggregator = new Mock<IEventAggregator>();
                var fakeMyEvent = new Mock<FundAddedEvent>();
                fakeEventAggregator.Setup(x => x.GetEvent<FundAddedEvent>()).Returns(fakeMyEvent.Object); 

                var presenter = new AddFundPresenter(fakeEventAggregator.Object) {View = view.Object};
                fakeMyEvent.Verify(x => x.Publish(It.IsAny<FundOrder>())); **//CRASHES** HERE



                //view.PublishAddClick();
                //view.Customer = "99";
                //view.Fund = "TestFund";

                //view.PublishAddClick();

                ////Assert 
                //Assert.IsTrue(mockFundAddedEvent.PublishCalled);
                //Assert.AreEqual("99", mockFundAddedEvent.PublishArgumentPayload.CustomerId);
                //Assert.AreEqual("TestFund", mockFundAddedEvent.PublishArgumentPayload.TickerSymbol);
            }

Answer 1

是的，这是可能的，您只需将其设置为返回一个模拟事件，您可以在该事件上验证是否调用了 Publish 或 Subscribe：

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>()));