text: describe("Player", function(){
    var player1, player2;
    beforeEach(function (){
      player1 = new Player('X');
      player2 = new Player('O');
    });
    it('is defined', function (){
      expect(Player).toBeDefined();
    });
    it('it is initialized with a mark', function (){
      expect(player1.mark).toEqual('X');
    });
  });
  