protected override Result Execute()
{
var step = 1;
BidimensionalPoint newPosition;
switch (Item.Direction)
{
case Direction.North:
newPosition = new BidimensionalPoint(Item.Position.Latitude, Item.Position.Longitude + step);
break;
case Direction.South:
newPosition = new BidimensionalPoint(Item.Position.Latitude, Item.Position.Longitude - step);
break;
case Direction.East:
newPosition = new BidimensionalPoint(Item.Position.Latitude + step, Item.Position.Longitude);
break;
case Direction.West:
newPosition = new BidimensionalPoint(Item.Position.Latitude - step, Item.Position.Longitude);
break;
case Direction.None:
default:
throw new ArgumentException(string.Format("No action move found for '{0}' direction", Item.Direction));
}
Item.Position = newPosition;
return(new Result(true));
}
public override IAction CreateAction(IRobot item, IMapDataProvider mapDataProvider, string actionParameters)
{
var parameters = actionParameters.Split(',');
parameters.ToList().ForEach(p => p.Trim());
if (parameters.Length != 3)
{
return(null);
}
int latitude;
if (!int.TryParse(parameters[0], out latitude))
{
return(null);
}
int longitude;
if (!int.TryParse(parameters[1], out longitude))
{
return(null);
}
Direction?direction = parameters[2].ToEnum <Direction>();
if (direction == null)
{
return(null);
}
var position = new BidimensionalPoint(latitude, longitude);
return(new PlaceAction(item, mapDataProvider, position, (Direction)direction));
}
public void Run_ShouldkeepPreviousPositionOrDirection_IfNotValid()
{
var position = new BidimensionalPoint(1, 3);
_robot.Position = position;
_robot.Direction = Direction.East;
_mapProviderMock.Setup(mapProvider => mapProvider.IsPositionAvailable(It.IsAny <IPosition>())).Returns(false);
var action = new PlaceAction(_robot, _mapProviderMock.Object, new BidimensionalPoint(2, 1), Direction.West);
action.Run();
Assert.Equal(position, _robot.Position);
Assert.Equal(Direction.East, _robot.Direction);
}
