static bool TestObserverPattern()
{
Console.WriteLine("TESTING THE OBSERVER DESIGN PATTERN: ");
//The subject that will be observed
Subject subject = new ConcreteSubject("ABC");
//Attaching 3 observers
subject.AttachRange(new List <Observer> {
new ConcreteObserver("o1"),
new ConcreteObserver("o2"),
new ConcreteObserver("o3")
});
//This will trigger the notification to the observers
subject.SetState("XYZ");
//Output:
//Observer o1 notified. New subject state: XYZ
//Observer o2 notified. New subject state: XYZ
//Observer o3 notified. New subject state: XYZ
Console.ReadKey();
return(true);
}
