chore: simplify pytest-asyncio uvloop hook

Agent-Logs-Url: https://github.com/plugboard-dev/plugboard/sessions/1dcc6e9b-2a3e-46e1-9493-f1dd0572e763

Co-authored-by: toby-coleman <13170610+toby-coleman@users.noreply.github.com>

Author: Copilot

tests/conftest.py

@@ -21,30 +21,12 @@
 from plugboard.utils.settings import Settings
 
 
-_HAS_LOOP_FACTORY_HOOK = hasattr(
-    getattr(pytest_asyncio, "plugin", None),
-    "PytestAsyncioSpecs",
-)
-
-
 @pytest.hookimpl(optionalhook=True)
-def pytest_asyncio_loop_factories(
-    config: pytest.Config,
-    item: pytest.Item,
-) -> dict[str, _t.Callable[[], asyncio.AbstractEventLoop]]:
+def pytest_asyncio_loop_factories() -> dict[str, _t.Callable[[], asyncio.AbstractEventLoop]]:
     """Configure pytest-asyncio to create event loops with uvloop."""
-    del config, item
     return {"uvloop": uvloop.new_event_loop}
 
 
-if not _HAS_LOOP_FACTORY_HOOK:
-
-    @pytest.fixture(scope="session")
-    def event_loop_policy() -> uvloop.EventLoopPolicy:
-        """Fallback uvloop policy for pytest-asyncio versions without hook support."""
-        return uvloop.EventLoopPolicy()
-
-
 @pytest.fixture(scope="session", autouse=True)
 def mp_set_start_method() -> None:
     """Set the start method for multiprocessing to 'spawn'."""

tests/unit/test_conftest.py

@@ -1,26 +1,10 @@
 """Unit tests for the shared pytest configuration."""
 
-import typing as _t
-from unittest.mock import MagicMock
-
-import pytest
 import uvloop
 
 from tests import conftest
 
 
 def test_pytest_asyncio_loop_factories_uses_uvloop() -> None:
     """The shared pytest-asyncio hook should configure uvloop factories."""
-    assert conftest.pytest_asyncio_loop_factories(
-        MagicMock(spec=pytest.Config),
-        MagicMock(spec=pytest.Item),
-    ) == {"uvloop": uvloop.new_event_loop}
-
-
-def test_event_loop_policy_fallback_uses_uvloop() -> None:
-    """Older pytest-asyncio releases should still get uvloop via the fallback fixture."""
-    if conftest._HAS_LOOP_FACTORY_HOOK:
-        pytest.skip("Installed pytest-asyncio already provides the loop-factory hook")
-
-    event_loop_policy = _t.cast(_t.Any, conftest.event_loop_policy)
-    assert isinstance(event_loop_policy.__wrapped__(), uvloop.EventLoopPolicy)
+    assert conftest.pytest_asyncio_loop_factories() == {"uvloop": uvloop.new_event_loop}