def test__check_diagonal_left(): b = Board() player = 1 assert b._check_diagonal_left(player, 3, 2) is False assert b._check_diagonal_left(player, 2, 3) is False assert b._check_diagonal_left(player, 1, 4) is False assert b._check_diagonal_left(player, 0, 5) is False assert b.add_disc(player, 3) assert b.add_disc(player, 3) assert b.add_disc(player, 3) assert b.add_disc(player, 2) assert b.add_disc(player, 2) assert b.add_disc(player, 1) player = 2 assert b.add_disc(player, 3) assert b.add_disc(player, 2) assert b.add_disc(player, 1) assert b.add_disc(player, 0) assert b._check_diagonal_left(player, 3, 2) assert b._check_diagonal_left(player, 2, 3) assert b._check_diagonal_left(player, 1, 4) assert b._check_diagonal_left(player, 0, 5)