public void TestCheckForWinner()
        {
            TicTacToe game = new TicTacToe("Player1", "Player2");

            // Ath vinningsstöðuna [0, 1, 2]
            game.PlayAction(game.Player1, 0);
            Assert.AreEqual(game.CheckForWinner(), null);

            game.PlayAction(game.Player1, 1);
            game.PlayAction(game.Player1, 2);
            Assert.AreEqual(game.Player1.Name, game.CheckForWinner().Name);
        }
        public void TestPlayAction()
        {
            TicTacToe game = new TicTacToe("Player1", "Player2");

            //Player1 setur sitt merki á nokkra reiti
            game.PlayAction(game.Player1, 0);
            game.PlayAction(game.Player1, 5);
            game.PlayAction(game.Player1, 6);

            //Kannað hvort reitirnir sem player1 valdi hafi skilað sér á borðið
            Assert.AreEqual(game.GameBoard[0], Play.Player1);
            Assert.AreEqual(game.GameBoard[5], Play.Player1);
            Assert.AreEqual(game.GameBoard[6], Play.Player1);
        }