test(conftest): add type hints to nonexistent_player_in_db fixture (#549)

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: nanotaboada

tests/conftest.py

@@ -1,8 +1,10 @@
 import warnings
+from typing import Any, Generator
+
 import pytest
 from fastapi.testclient import TestClient
 from main import app
-from tests.player_stub import nonexistent_player
+from tests.player_stub import Player, nonexistent_player
 
 # Suppress the DeprecationWarning from httpx
 warnings.filterwarnings("ignore", category=DeprecationWarning)
@@ -24,14 +26,14 @@ def client():
 
 
 @pytest.fixture(scope="function")
-def nonexistent_player_in_db(client):
+def nonexistent_player_in_db(client: Any) -> Generator[Player, None, None]:
     """
     Creates the nonexistent player in the database and removes it on teardown.
 
     Yields:
         Player: The player stub created in the database.
     """
-    player = nonexistent_player()
+    player: Player = nonexistent_player()
     client.post("/players/", json=player.__dict__)
     yield player
     client.delete(f"/players/squadnumber/{player.squad_number}")