Better way to unit test events using NUnit and Moq?

Question

I am using NUnit and Moq to test a class that has some events and I am trying to find the best way to test whether or not an event was fired. I came up with this solution but it feels kinda dirty since I have to create an interface for the test. Any way I can do the same thing with less code or not have to create an interface?

Its not that bad but I feel someone may have a better solution. Any ideas are appreciated. Thanks.

[Test]
    public void StartedAndStoppedEventsShouldFireWhenStartedAndStopped()
    {
        var mockStartedEventSubscriber = new Mock<IEventSubscriber>();
        var mockStoppedEventSubscriber = new Mock<IEventSubscriber>();

        _NetworkMonitor.Started += mockStartedEventSubscriber.Object.Handler;
        _NetworkMonitor.Stopped += mockStoppedEventSubscriber.Object.Handler;

        _NetworkMonitor.Start();
        _NetworkMonitor.Stop();

        Func<bool> func = () => { return (eNetworkMonitorStatus.Stopped == _NetworkMonitor.Status); };
        Utilities.WaitUntilTrue(func, _NetworkMonitor.Interval * 2, 10);

        _NetworkMonitor.Started -= mockStartedEventSubscriber.Object.Handler;
        _NetworkMonitor.Stopped -= mockStoppedEventSubscriber.Object.Handler;

        mockStartedEventSubscriber.Verify(h => h.Handler(_NetworkMonitor, EventArgs.Empty), Times.Once());
        mockStoppedEventSubscriber.Verify(h => h.Handler(_NetworkMonitor, EventArgs.Empty), Times.Once());
    }

    public interface IEventSubscriber
    {
        void Handler(object sender, EventArgs e);
    }

Answer 1

This test seems easier to do without mocks. Make the test fixture double as an event subscriber.

_networkMonitor.Started += this.SetStartedFlag; // a private method which sets a flag in the test fixture.
_networkMonitor.Start();
Assert.That(StartedFlag, Is.True);