refactor: Make PytestAsyncioFunction.loop_scope protected.

Author: seifertm

pytest_asyncio/plugin.py

@@ -442,30 +442,15 @@ def _can_substitute(item: Function) -> bool:
         """Returns whether the specified function can be replaced by this class"""
         raise NotImplementedError()
 
-    @functools.cached_property
-    def loop_scope(self) -> _ScopeName:
-        """
-        Return the scope of the asyncio event loop this item is run in.
-
-        The effective scope is determined lazily. It is identical to to the
-        `loop_scope` value of the closest `asyncio` pytest marker. If no such
-        marker is present, the the loop scope is determined by the configuration
-        value of `asyncio_default_test_loop_scope`, instead.
-        """
-        marker = self.get_closest_marker("asyncio")
-        assert marker is not None
-        default_loop_scope = _get_default_test_loop_scope(self.config)
-        return _get_marked_loop_scope(marker, default_loop_scope)
-
     def setup(self) -> None:
         fixturenames = self.fixturenames
-        runner_fixture_id = f"_{self.loop_scope}_scoped_runner"
+        runner_fixture_id = f"_{self._loop_scope}_scoped_runner"
         if runner_fixture_id not in fixturenames:
             fixturenames.append(runner_fixture_id)
         return super().setup()
 
     def runtest(self) -> None:
-        runner_fixture_id = f"_{self.loop_scope}_scoped_runner"
+        runner_fixture_id = f"_{self._loop_scope}_scoped_runner"
         runner = self._request.getfixturevalue(runner_fixture_id)
         context = contextvars.copy_context()
         synchronized_obj = _synchronize_coroutine(
@@ -475,6 +460,21 @@ def runtest(self) -> None:
             c.setattr(*self._synchronization_target_attr, synchronized_obj)
             super().runtest()
 
+    @functools.cached_property
+    def _loop_scope(self) -> _ScopeName:
+        """
+        Return the scope of the asyncio event loop this item is run in.
+
+        The effective scope is determined lazily. It is identical to to the
+        `loop_scope` value of the closest `asyncio` pytest marker. If no such
+        marker is present, the the loop scope is determined by the configuration
+        value of `asyncio_default_test_loop_scope`, instead.
+        """
+        marker = self.get_closest_marker("asyncio")
+        assert marker is not None
+        default_loop_scope = _get_default_test_loop_scope(self.config)
+        return _get_marked_loop_scope(marker, default_loop_scope)
+
     @property
     def _synchronization_target_attr(self) -> tuple[object, str]:
         """