public void CanTrackScreen()
{
var provider = A.Fake<IAnalyticsProvider>();
var analytics = new Analytics();
analytics.Subscribe(provider);
analytics.TrackScreen(A.Dummy<string>());
A.CallTo(() => provider.TrackScreen(A<string>._)).MustHaveHappened(Repeated.Exactly.Once);
A.CallTo(() => provider.TrackEvent(A<string>._)).MustNotHaveHappened();
A.CallTo(() => provider.TrackException(A<Exception>._)).MustNotHaveHappened();
}
