public void AndTheRoverIsFacingNorthThenTheYDecreasesByOne()
{
var rover = new Rover(0, 0, Direction.North);
var newRover = RoverCommands.MoveBackward(rover);
Assert.AreEqual(newRover.X, rover.X);
Assert.AreEqual(newRover.Y, rover.Y - 1);
Assert.AreEqual(newRover.Direction, rover.Direction);
}
public void AndTheRoverIsFacingWestThenTheXIncreasesByOne()
{
var rover = new Rover(0, 0, Direction.West);
var newRover = RoverCommands.MoveBackward(rover);
Assert.AreEqual(newRover.X, rover.X + 1);
Assert.AreEqual(newRover.Y, rover.Y);
Assert.AreEqual(newRover.Direction, rover.Direction);
}