public void GameShouldKnowWhoIsActivePlayer()
 {
     Game target = new Game(new HumanPlayer(), new ComputerPlayer());
     char actual = target.GetActivePlayerID();
     char expected = 'X';
     Assert.AreEqual(expected, actual);
     target.LogMove(new Tuple<int, int>(1, 1));
     actual = target.GetActivePlayerID();
     expected = 'O';
     Assert.AreEqual(expected, actual);
 }