test both cross and circle for BetterEngine

src/effective_software_testing/engine.py

@@ -29,6 +29,9 @@ def make_move(self) -> bool:
 class BetterEngine(Engine):
     """A slightly better tic-tac-toe engine that plays in the centre if possible"""
 
+    def __init__(self, player: Player, board: Board, seed: Optional[int] = None):
+        super().__init__(player, board, seed)
+
     def make_move(self) -> bool:
         """Play in the centre if possible, otherwise make a random valid move and return True."""
         if self._board.make_move(self._board.n // 2, self._board.n // 2, self._player):

tests/test_engine.py

@@ -87,8 +87,10 @@ def test_two_engines_finish_game(
     assert engine_circle.make_move() is False
 
 
-def test_better_engine_first_move_in_centre() -> None:
+@pytest.mark.parametrize("player", players)
+def test_better_engine_first_move_in_centre(player: Player) -> None:
     board = Board(3)
-    engine = BetterEngine(Player.CROSS, board)
+    engine = BetterEngine(player, board)
+    assert board.square(1, 1) is None
     assert engine.make_move() is True
-    assert board.square(1, 1) == Player.CROSS
+    assert board.square(1, 1) == player