Pytest finalizer fails when using both ASGIWebSocketTransport and pytest-asyncio #128
Description
Describe the bug
When using pytest-asyncio instead of anyio pytest plugin, the test teardown fails with following error
RuntimeError: Attempted to exit cancel scope in a different task than it was entered in
I can't reproduce the issue when running anyio pytest plugin.
To Reproduce
I've create a small git repository to help reproduce the issue (Hello World FastAPI Websocket, single test, pytest + pytest-asyncio)
Steps to reproduce the behavior:
- Go to https://github.com/Pysae/httpx-ws-pytest
- Clone the repository
- poetry install
- run
pytest
Expected behavior
Should be green !
Configuration
- Python version: 3.14
- httpx-ws version:
"httpx (>=0.28.1,<0.29.0)",
"httpx-ws (>=0.8.2,<0.9.0)",
"fastapi (>=0.121.3,<0.122.0)"
]```
## Additional context
```@pytest.fixture(scope="session")
async def client(app: FastAPI) -> AsyncGenerator[AsyncClient, None]:
> async with AsyncClient(
transport=ASGIWebSocketTransport(app=app), base_url="http://testserver/"
) as c:
httpx_ws_pytest_tests/test_app.py:20:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.venv/lib/python3.11/site-packages/httpx/_client.py:2016: in __aexit__
await self._transport.__aexit__(exc_type, exc_value, traceback)
.venv/lib/python3.11/site-packages/httpx_ws/transport.py:218: in __aexit__
await self._exit_stack.__aexit__(exc_type, exc_val, exc_tb)
../../../.pyenv/versions/3.11.2/lib/python3.11/contextlib.py:733: in __aexit__
raise exc_details[1]
../../../.pyenv/versions/3.11.2/lib/python3.11/contextlib.py:716: in __aexit__
cb_suppress = await cb(*exc_details)
^^^^^^^^^^^^^^^^^^^^^^
.venv/lib/python3.11/site-packages/anyio/_backends/_asyncio.py:792: in __aexit__
return self.cancel_scope.__exit__(exc_type, exc_val, exc_tb)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
self = <anyio._backends._asyncio.CancelScope object at 0x7fe91e5dc850>, exc_type = None, exc_val = None
def __exit__(
self,
exc_type: type[BaseException] | None,
exc_val: BaseException | None,
exc_tb: TracebackType | None,
) -> bool:
del exc_tb
if not self._active:
raise RuntimeError("This cancel scope is not active")
if current_task() is not self._host_task:
> raise RuntimeError(
"Attempted to exit cancel scope in a different task than it was "
"entered in"
)
E RuntimeError: Attempted to exit cancel scope in a different task than it was entered in
.venv/lib/python3.11/site-packages/anyio/_backends/_asyncio.py:459: RuntimeError
--------------------------------------------------------------------------- Captured stdout call ----------------------------------------------------------------------------
Client disconnected
========================================================================== short test summary info ==========================================================================
ERROR httpx_ws_pytest_tests/test_app.py::test_ws - RuntimeError: Attempted to exit cancel scope in a different task than it was entered in
======================================================================== 1 passed, 1 error in 0.33s =========================================================================