Unable to fire event from FakeItEasy in unit test

I am using Test Driven Development to develop a simple application using Xamarin Studio on Mac OS X. I am using NUnit as a test harness and FakeItEasy for mocking. I have developed an object that fires an event and I want to test this response of another object to that event, however it seems that the response object never receives any events, which are fires in the test.

The following code illustrates the problem:

using System;
using NUnit.Framework;
using FakeItEasy;

namespace EventTest
{
    public class EventProvider
    {
        public delegate void EventDelegate(object sender, EventArgs arguments);

        public EventDelegate Event;
    }

    class EventResponder
    {
        public EventResponder(EventProvider provider)
        {
            provider.Event += (sender, arguments) => ++EventCount;
        }

        public uint EventCount { get; private set; }
    }

    [TestFixture]
    public class EventResponderTest
    {
        [Test]
        public void ResponseToFiredEvent()
        {
            var eventProvider = A.Fake<EventProvider>();

            EventResponder responder = new EventResponder(eventProvider);

            eventProvider.Event += Raise.WithEmpty().Now;
            eventProvider.Event += Raise.WithEmpty().Now;
            eventProvider.Event += Raise.WithEmpty().Now;

            Assert.AreEqual(3, responder.EventCount);
        }
    }
}

      

        
        
        
      

    

The test fails because EventCount is 0. What do you need to do to pass this test?