public void SetPropertyActionWorks()
{
var instance = new Exception();
SetPropertyAction action = new SetPropertyAction(instance, "Source", "foo");
ActionManager am = new ActionManager();
am.RecordAction(action);
Assert.AreEqual("foo", instance.Source);
am.Undo();
Assert.AreEqual(null, instance.Source);
am.Redo();
Assert.AreEqual("foo", instance.Source);
}
public void AddItemActionWorks()
{
List<string> list = new List<string>();
AddItemAction<string> action = new AddItemAction<string>(list.Add, s => list.Remove(s), "foo");
ActionManager am = new ActionManager();
am.RecordAction(action);
Assert.AreEqual("foo", list[0]);
am.Undo();
Assert.AreEqual(0, list.Count);
am.Redo();
Assert.AreEqual("foo", list[0]);
}
public void CallMethodActionWorks()
{
bool capturedFlag = false;
ActionManager am = new ActionManager();
CallMethodAction action = new CallMethodAction(
() => capturedFlag = true,
() => capturedFlag = false);
am.RecordAction(action);
Assert.IsTrue(capturedFlag);
am.Undo();
Assert.IsFalse(capturedFlag);
am.Redo();
Assert.IsTrue(capturedFlag);
}
public void Transactions()
{
var instance = new Exception();
instance.Source = "green";
ActionManager am = new ActionManager();
am.SetProperty(instance, "Source", "blue");
Assert.AreEqual("blue", instance.Source);
am.Undo();
Assert.AreEqual("green", instance.Source);
using (Transaction.Create(am))
{
am.SetProperty(instance, "Source", "red");
Assert.AreEqual("green", instance.Source);
}
Assert.AreEqual(instance.Source, "red");
am.Undo();
Assert.AreEqual("green", instance.Source);
am.Redo();
Assert.AreEqual(instance.Source, "red");
}