public void CanSaveState()
{
var originator = new Originator(15);
var memento = originator.SaveState();
Assert.AreEqual(15, memento.State);
originator = new Originator(256);
originator.SetState(memento);
Assert.AreEqual(15, originator.State);
}
public void CanUserCaretaker()
{
var c = new Caretaker();
var o = new Originator(0);
//I stack the different states of the object
for (int i = 0; i < 10; i++)
{
o.State = i;
c.PushState(o);
}
//I unstack the different state of the object
for (int i = 10; i < 0; i--)
{
c.PopState(o);
Assert.AreEqual(i, o.State);
}
}
public void PushState(Originator originator)
{
var memento = originator.SaveState();
this.stack.Push(memento);
}
public void PopState(Originator originator)
{
var memento = this.stack.Pop();
originator.SetState(memento);
}