| protected OnPropertyChanged ( string propertyName ) : void | ||
| propertyName | string | |
| return | void | |
public void can_get_the_number_of_times_a_property_has_changed()
{
var observable = new Observable();
var observer = new PropertyChangeObserver<Observable>(observable);
Assert.Equal(0, observer.GetChangeCount("Property"));
Assert.Equal(0, observer.GetChangeCount(x => x.Property));
observable.OnPropertyChanged("Property");
Assert.Equal(1, observer.GetChangeCount("Property"));
Assert.Equal(1, observer.GetChangeCount(x => x.Property));
observable.OnPropertyChanged("Property");
Assert.Equal(2, observer.GetChangeCount("Property"));
Assert.Equal(2, observer.GetChangeCount(x => x.Property));
}
public void can_clear_the_observed_changed()
{
var observable = new Observable();
var observer = new PropertyChangeObserver<Observable>(observable);
observable.OnPropertyChanged("Property");
observer.ClearChanges();
Assert.False(observer.HasChanged(x => x.Property));
}
public void can_determine_if_a_property_has_changed()
{
var observable = new Observable();
var observer = new PropertyChangeObserver<Observable>(observable);
Assert.False(observer.HasChanged("Property"));
Assert.False(observer.HasChanged(x => x.Property));
observable.OnPropertyChanged("Property");
Assert.True(observer.HasChanged("Property"));
Assert.True(observer.HasChanged(x => x.Property));
}