public void UndoRedo_GroupTest_SingleGroupItemCollapses()
{
var undoredo = new UndoRedoManager();
var group = new UndoableGroupAction("w/e");
group.Add(new LambdaUndoableAction("Nothing", () => { }, () => { }));
undoredo.ExecuteAction(group);
Assert.IsTrue(undoredo.AnyUndos);
Assert.AreEqual(1, undoredo.UndoStack.Count);
Assert.AreEqual("Nothing", undoredo.UndoStack.First().DisplayName);
}
public void UndoRedo_GroupTest()
{
var manager = new UndoRedoManager();
int value = 9;
var groupAction = new UndoableGroupAction("Lots of math", "MATH");
groupAction.Add(new LambdaUndoableAction("Add 3", () => value += 3, () => value -= 3));
groupAction.Add(new LambdaUndoableAction("Div 2", () => value /= 2, () => value *= 2));
Assert.IsFalse(manager.AnyUndos);
Assert.IsFalse(manager.AnyRedos);
Assert.AreEqual(0, manager.UndoStack.Count);
Assert.AreEqual(0, manager.RedoStack.Count);
manager.ExecuteAction(groupAction);
Assert.AreEqual(6, value);
Assert.IsTrue(manager.AnyUndos);
Assert.IsFalse(manager.AnyRedos);
Assert.AreEqual(1, manager.UndoStack.Count);
Assert.AreEqual(0, manager.RedoStack.Count);
Assert.IsTrue(manager.Undo());
Assert.AreEqual(9, value);
Assert.IsFalse(manager.AnyUndos);
Assert.IsTrue(manager.AnyRedos);
Assert.AreEqual(0, manager.UndoStack.Count);
Assert.AreEqual(1, manager.RedoStack.Count);
Assert.IsTrue(manager.Redo());
Assert.AreEqual(6, value);
Assert.IsTrue(manager.AnyUndos);
Assert.IsFalse(manager.AnyRedos);
Assert.AreEqual(1, manager.UndoStack.Count);
Assert.AreEqual(0, manager.RedoStack.Count);
}
