public void SubscribeUnmanagedToEventWithUnsubscribe()
{
var observable = new SomeObservable();
var triggerCount = 0;
Action handler = () => { triggerCount++; };
observable.SomeEvent.SubscribeUnmanaged(handler);
Assert.AreEqual(0, triggerCount);
observable.SomeEvent.Fire();
Assert.AreEqual(1, triggerCount);
observable.SomeEvent.Unsubscribe(handler);
observable.SomeEvent.Fire();
Assert.AreEqual(1, triggerCount);
}