public void ValidUndoStatesAfterRedo()
{
var redoSensor = new Sensor("Temperature", "C");
var correctStackItem = new SensorState(redoSensor, new DateTime(2011, 7, 5, 22, 47, 0), new Dictionary<DateTime, float> { { new DateTime(2010, 5, 5, 22, 00, 0), 22.5f }, { new DateTime(2010, 5, 5, 22, 15, 0), 21.4f }, { new DateTime(2010, 5, 5, 22, 30, 0), 22.0f } }, null);
var correctStackItemTwo = new SensorState(redoSensor, new DateTime(2011, 7, 9, 22, 47, 0), new Dictionary<DateTime, float> { { new DateTime(2010, 5, 5, 22, 00, 0), 22.5f }, { new DateTime(2010, 5, 5, 22, 15, 0), 21.4f }, { new DateTime(2010, 5, 5, 22, 30, 0), 22.0f } }, null);
redoSensor.AddState(correctStackItem);
redoSensor.AddState(correctStackItemTwo);
redoSensor.Undo();
Assert.AreEqual(correctStackItem, redoSensor.CurrentState);
redoSensor.Redo();
Assert.AreEqual(1, redoSensor.UndoStates.Count);
}
public void UndoToParticularState()
{
var s = new Sensor("Temperature", "C");
var baseDate = new DateTime(2011, 7, 7, 12, 15, 0);
s.AddState(new SensorState(s, baseDate));
s.AddState(new SensorState(s, baseDate.AddMinutes(15)));
s.AddState(new SensorState(s, baseDate.AddMinutes(30)));
s.AddState(new SensorState(s, baseDate.AddMinutes(45)));
s.AddState(new SensorState(s, baseDate.AddMinutes(60)));
s.AddState(new SensorState(s, baseDate.AddMinutes(75)));
s.AddState(new SensorState(s, baseDate.AddMinutes(90)));
s.AddState(new SensorState(s, baseDate.AddMinutes(105)));
s.Undo(baseDate.AddMinutes(75));
Assert.AreEqual(2, s.RedoStates.Count);
Assert.AreEqual(baseDate.AddMinutes(90), s.RedoStates[0].EditTimestamp);
Assert.AreEqual(baseDate.AddMinutes(105), s.RedoStates[1].EditTimestamp);
}
public void ValidUndoStatesAfterMultilevelRedo()
{
_undoSensor = new Sensor("Temperature", "C");
var correctStack = new Stack<SensorState>();
correctStack.Push(new SensorState(_undoSensor, new DateTime(2011, 8, 12),
new Dictionary<DateTime, float> { { new DateTime(2011, 8, 12), 66.77f } }, null));
correctStack.Push(new SensorState(_undoSensor, new DateTime(2011, 8, 11),
new Dictionary<DateTime, float> { { new DateTime(2011, 8, 12), 66.77f } }, null));
correctStack.Push(new SensorState(_undoSensor, new DateTime(2011, 8, 12),
new Dictionary<DateTime, float> { { new DateTime(2011, 8, 12), 64.77f } }, null));
_undoSensor.AddState(new SensorState(_undoSensor, new DateTime(2011, 8, 11),
new Dictionary<DateTime, float> { { new DateTime(2011, 8, 12), 66.77f } }, null));
_undoSensor.AddState(new SensorState(_undoSensor, new DateTime(2011, 8, 12),
new Dictionary<DateTime, float> { { new DateTime(2011, 8, 12), 66.77f } }, null));
_undoSensor.AddState(new SensorState(_undoSensor, new DateTime(2011, 8, 12),
new Dictionary<DateTime, float> { { new DateTime(2011, 8, 12), 64.77f } }, null));
_undoSensor.Undo();
_undoSensor.Undo();
Assert.AreEqual(2, _undoSensor.RedoStates.Count);
Assert.AreEqual(0, _undoSensor.UndoStates.Count);
_undoSensor.Redo();
_undoSensor.Redo();
Assert.AreEqual(0, _undoSensor.RedoStates.Count);
Assert.AreEqual(2, _undoSensor.UndoStates.Count);
}
//[Test] Limit no longer applied as we don't save the undo/redo stack
public void UndoRedoStackMaximumFiveEntries()
{
var s = new Sensor("Temperature", "C");
s.AddState(new SensorState(s, DateTime.Now));
s.AddState(new SensorState(s, DateTime.Now));
s.AddState(new SensorState(s, DateTime.Now));
s.AddState(new SensorState(s, DateTime.Now));
s.AddState(new SensorState(s, DateTime.Now));
s.AddState(new SensorState(s, DateTime.Now));
s.AddState(new SensorState(s, DateTime.Now));
Assert.AreEqual(5, s.UndoStates.Count);
Assert.AreEqual(0, s.RedoStates.Count);
s.Undo();
s.Undo();
s.Undo();
s.Undo();
// Since the top of the undo stack is the current state, we must have at least one item left on the undo stack...
Assert.AreEqual(1, s.UndoStates.Count); // This is the real test
Assert.AreEqual(4, s.RedoStates.Count);
s.Redo();
s.Redo();
s.Redo();
s.Redo();
Assert.AreEqual(5, s.UndoStates.Count); // This is the real test
Assert.AreEqual(0, s.RedoStates.Count);
}
