public void TestRotateRight_DoubleRightRotation()
 {
     var robot = new ToyRobot { Direction = Direction.East, Position = new Position(0, 0) };
     robot.RotateRight();
     robot.RotateRight();
     Assert.AreEqual(Direction.West, robot.Direction);
 }
 public void TestRotate_LeftAndRight()
 {
     var robot = new ToyRobot { Direction = Direction.North, Position = new Position(0, 0) };
     robot.RotateLeft();
     robot.RotateRight();
     Assert.AreEqual(Direction.North, robot.Direction);
 }