public void Undo_MultipleActions_UndoesActionsInReverseOrder()
{
var action = new UndoActionSequence <IUndoAction>(NewAction("a"), NewAction("b"), NewAction("c"));
Assert.IsTrue(action.Undo());
Assert.AreEqual(3, m_actionsTaken.Count);
int i = 0;
Assert.AreEqual("Undo c", m_actionsTaken[i++]);
Assert.AreEqual("Undo b", m_actionsTaken[i++]);
Assert.AreEqual("Undo a", m_actionsTaken[i++]);
}
public void Undo_OneActionCannotBeUndone_RedoesActionsThatWereUndoneToGetBackToStateBeforeCallingUndo()
{
var action = new UndoActionSequence <IUndoAction>(NewAction("a", false), NewAction("b"), NewAction("c"));
Assert.IsFalse(action.Undo());
Assert.AreEqual(5, m_actionsTaken.Count);
int i = 0;
Assert.AreEqual("Undo c", m_actionsTaken[i++]);
Assert.AreEqual("Undo b", m_actionsTaken[i++]);
Assert.AreEqual("Failed to undo a", m_actionsTaken[i++]);
Assert.AreEqual("Redo b", m_actionsTaken[i++]);
Assert.AreEqual("Redo c", m_actionsTaken[i++]);
}