public void Then_the_ship_moves_west()
{
const int distance = 5;
var shipMover = new ShipMover();
shipMover.InitialisePosition(new Point(0, 0));
shipMover.MoveWest(distance);
Assert.That(shipMover.GetPosition(), Is.EqualTo(new Point(-1 * distance, 0)));
}
public void Then_the_ship_moves_forward()
{
//the ship starts facing east
const int distance = 5;
var shipMover = new ShipMover();
shipMover.InitialisePosition(new Point(0, 0));
shipMover.MoveForward(distance);
Assert.That(shipMover.GetPosition(), Is.EqualTo(new Point(distance, 0)));
}