public void TestWinGrid()
        {
            Grid _grid = new Grid ();
            _grid.GridDraw ();

            Assert.IsFalse ( _grid.CheckWinState () );

            _grid.SelectSquareO ( SwinGame.PointAt ( 230, 230 ));
            Assert.IsTrue ( _grid.Squares[4].SelectedO == true );

            _grid.Squares[1].SelectedO = true;
            _grid.Squares[7].SelectedO = true;

            Assert.IsTrue ( _grid.CheckWinState () );
        }