public void Attach_NewObserverRegisters_ObserverIsOnTheList()
{
Delivery d = new Delivery(new Order());
DeliveryDisplay dd = new DeliveryDisplay();
d.Attach(dd);
Assert.IsTrue(d.observersList.Contains(dd));
}
public void Update_DeliveryIsUpdated_ObserverHasUpdatedVersion()
{
Delivery d = new Delivery(new Order());
DeliveryDisplay dd = new DeliveryDisplay();
d.Attach(dd);
d.Finished();
Assert.IsTrue(dd.deliveryList[0].IsFinished());
}
public void Detach_ObserverUnregisters_ObserverIsNotOnTheList()
{
Delivery d = new Delivery(new Order());
DeliveryDisplay dd = new DeliveryDisplay();
d.Attach(dd);
d.Detach(dd);
Assert.IsFalse(d.observersList.Contains(dd));
}
public void Update_DeliveryIsUpdatedMultipleTimes_NumberOfUpdatesIsCorrect()
{
Delivery d = new Delivery(new Order());
DeliveryDisplay dd = new DeliveryDisplay();
d.Attach(dd);
d.Finished();
d.NotFinished();
d.Finished();
Assert.AreEqual(dd.numberOfUpdates, 3);
}
