public void Test()
{
var originator = new Originator("field 2", 42)
{
Property1 = "property 1",
Field1 = "field 1"
};
Assert.That(originator.Field1, Is.EqualTo("field 1"));
Assert.That(originator.GetField2(), Is.EqualTo("field 2"));
Assert.That(originator.Property1, Is.EqualTo("property 1"));
Assert.That(originator.Property2, Is.EqualTo(42));
var memento = new Memento<Originator>(originator);
originator.Field1 = "field 1a";
originator.SetField2("field 2a");
originator.Property1 = "property 1a";
originator.SetProperty2(52);
Assert.That(originator.Field1, Is.EqualTo("field 1a"));
Assert.That(originator.GetField2(), Is.EqualTo("field 2a"));
Assert.That(originator.Property1, Is.EqualTo("property 1a"));
Assert.That(originator.Property2, Is.EqualTo(52));
memento.Restore(originator);
Assert.That(originator.Field1, Is.EqualTo("field 1"));
Assert.That(originator.GetField2(), Is.EqualTo("field 2"));
Assert.That(originator.Property1, Is.EqualTo("property 1"));
Assert.That(originator.Property2, Is.EqualTo(42));
}
public void StateRestores()
{
// Save the original state of the originator
_memento = _originator.CreateMemento();
_caretaker.Memento = _memento;
var originalState = _originator.CurrentState;
// Switch the state
_originator.SwitchState();
// Restore to the original state
_originator.RestoreState(_caretaker.Memento);
Assert.AreEqual(originalState, _originator.CurrentState);
}
// Restores original state
public void SetMemento(Memento memento)
{
Console.WriteLine("Restoring state...");
State = memento.State;
}
public MementoTest()
{
_memento = new DesignPatterns.Behavioral.Memento.Memento();
_originator = new Originator();
_caretaker = new Caretaker();
}
public void SetMemento(Memento memento)
{
Debug.WriteLine("Restoring state...");
State = memento.State;
}
public void Restore(Memento memento)
{
State = memento.GetState();
}
