public void South_MoveFromCurrentPosition_ReturnsNewCoordinate_WithYMovedDownward(
int currentX, int currentY, int newY)
{
Coordinates currentPosition = new Coordinates(currentX, currentY);
IDirection currentDirection = new South();
Coordinates newCoordinates = currentDirection.MoveFrom(currentPosition);
Assert.AreEqual(newCoordinates.XCoordinate, currentX);
Assert.AreEqual(newCoordinates.YCoordinate, newY);
}
