Fixed a regression in the pytest plugin that broke parametrized async fixtures

Author: agronholm

docs/versionhistory.rst

@@ -3,6 +3,19 @@ Version history
 
 This library adheres to `Semantic Versioning 2.0 <http://semver.org/>`_.
 
+**UNRELEASED**
+
+- Fixed regression caused by (`#807 <https://github.com/agronholm/anyio/pull/807>`_)
+  that prevented the use of parametrized async fixtures.
+
+**4.6.1**
+
+This release contains all the changes from both v4.5.1 and v4.6.0, plus:
+
+- Fixed TaskGroup and CancelScope producing cyclic references in tracebacks
+  when raising exceptions (`#806 <https://github.com/agronholm/anyio/pull/806>`_)
+  (PR by @graingert)
+
 **4.6.0**
 
 This release is the successor to v4.5.0 with Python 3.8 support dropped, and does not
@@ -22,6 +35,11 @@ contain the changes from v4.5.1.
 - Fixed inconsistent task uncancellation with asyncio cancel scopes belonging to a
   task group when said task group has child tasks running
 
+**4.5.2**
+
+- Fixed regression caused by (`#807 <https://github.com/agronholm/anyio/pull/807>`_)
+  that prevented the use of parametrized async fixtures.
+
 **4.5.1**
 
 As Python 3.8 support was dropped in v4.6.0, this interim release was created to bring a

src/anyio/pytest_plugin.py

@@ -91,7 +91,7 @@ def wrapper(
             kwargs["anyio_backend"] = anyio_backend
 
         if has_request_arg:
-            kwargs["request"] = anyio_backend
+            kwargs["request"] = request
 
         with get_runner(backend_name, backend_options) as runner:
             if isasyncgenfunction(local_func):

tests/test_pytest_plugin.py

@@ -541,3 +541,23 @@ def test_no_mark(fixt):
 
     result = testdir.runpytest(*pytest_args)
     result.assert_outcomes(passed=len(get_all_backends()) + 1)
+
+
+def test_async_fixture_params(testdir: Pytester) -> None:
+    testdir.makepyfile(
+        """
+        import inspect
+        import pytest
+
+        @pytest.fixture(params=[1, 2])
+        async def fixt(request):
+            return request.param
+
+        @pytest.mark.anyio
+        async def test_params(fixt):
+            assert fixt in (1, 2)
+        """
+    )
+
+    result = testdir.runpytest(*pytest_args)
+    result.assert_outcomes(passed=len(get_all_backends()) * 2)