public void GetCellFromPoint() { WorldGrid grid = new WorldGrid(10000, 10000, 1000, 1000); Assert.Equal( new Tuple <int, int>(6, 1), grid.GetCellFromPoint(new Point(5200, 120)) ); Assert.Equal( new Tuple <int, int>(1, 1), grid.GetCellFromPoint(new Point(100, 100)) ); Assert.Throws <ArgumentOutOfRangeException>( () => grid.GetCellFromPoint(new Point(-200, 200)) ); }