public void SetFrequency_HarmonicPropertiesChangedAfterSetFrequencyWithNullObserver() { IHarmonic harmonic = new Harmonic(); harmonic.SetFrequency(10); Assert.AreEqual(10, harmonic.GetFrequency()); }
public void SetFrequency_ObserverPropertiesChangedAfterSetFrequency() { IHarmonic harmonic = new Harmonic(); var harmonicObserver = new HarmonicObserver(); harmonic.SetObserver(harmonicObserver); harmonic.SetFrequency(10); Assert.IsTrue(harmonicObserver.PropertiesChanged); }