public static void When_I_set_a_PropertyWithBackingField() { var notify = new NotifyPropertyWithBackingField(); var propertiesThatChanged = notify.ObservePropertyChanges(); notify.PropertyWithBackingField = 1; "it should notify that the PropertyWithBackingField has changed" .AssertThat(propertiesThatChanged, Is.EquivalentTo(new[] { "PropertyWithBackingField" })); }