private static MementoNode NodeFromElement(GameMemento previous, XElement element)
{
var type = element.Attribute("type").Value;
IUpdateAction action;
switch (type)
{
case MoveBallToken: {
var(src, dst) = MoveActionParamsFromElement(element.Element(MoveParamsElement));
action = MoveBallAction.New(src, dst);
break;
}
case MovePieceToken: {
var(src, dst) = MoveActionParamsFromElement(element.Element(MoveParamsElement));
action = MovePieceAction.New(src, dst);
break;
}
case PassToken:
action = new PassAction();
break;
default: throw new ArgumentOutOfRangeException();
}
return(previous.Update(action));
}
private static void AssertMoveBallSucceeded(GameState before, GameState after, MoveBallAction action)
{
CollectionAssert.AreEquivalent(before.PositionsForPlayer(before.CurrentPlayer),
after.PositionsForPlayer(before.CurrentPlayer));
Assert.AreEqual(before.BallCarrierForPlayer(before.CurrentPlayer), action.Src);
Assert.AreEqual(after.BallCarrierForPlayer(before.CurrentPlayer), action.Dst);
AssertWhetherPlayerHasChanged(before, after);
}
