public static void TestPositionDistance()
{
Position position1 = new Position(File.A, 2);
Position position2 = new Position(File.A, 3);
PositionDistance distance1 = new PositionDistance(position1, position2);
Assert.AreEqual(0, distance1.DistanceX);
Assert.AreEqual(1, distance1.DistanceY);
PositionDistance distance2 = new PositionDistance(position2, position1);
Assert.AreEqual(0, distance2.DistanceX);
Assert.AreEqual(1, distance2.DistanceY);
}
}