Cancel WebSocketTestSession on close
#2427
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Kludex
commented
Jan 19, 2024
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Kludex
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- Closes Background Thread created by WebSocketTestSession should exit when close() is called #947
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Kludex
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Jan 19, 2024
starlette/testclient.py
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| async def run_app(tg: anyio.abc.TaskGroup) -> None: | ||
| try: | ||
| await self.app(self.scope, self._asgi_receive, self._asgi_send) | ||
| except anyio.get_cancelled_exc_class(): | ||
| ... | ||
| except BaseException as exc: | ||
| self._send_queue.put(exc) | ||
| raise | ||
| tg.cancel_scope.cancel() | ||
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| async with anyio.create_task_group() as tg: | ||
| tg.start_soon(run_app, tg) | ||
| await self.event.wait() | ||
| tg.cancel_scope.cancel() |
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This is the relevant code.
| def __exit__(self, *args: typing.Any) -> None: | ||
| try: | ||
| self.close(1000) | ||
| finally: | ||
| self.portal.start_task_soon(self._notify_close) |
tests/test_testclient.py
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| def test_websocket_not_block_on_close(test_client_factory: Callable[..., TestClient]): | ||
| def app(scope: Scope): | ||
| async def asgi(receive: Receive, send: Send): | ||
| websocket = WebSocket(scope, receive=receive, send=send) | ||
| await websocket.accept() | ||
| while True: | ||
| await anyio.sleep(0.1) | ||
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| return asgi | ||
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| client = test_client_factory(app) | ||
| with client.websocket_connect("/") as websocket: | ||
| ... | ||
| assert websocket.event.is_set() |
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This is the relevant test.
Kludex
commented
Jan 19, 2024
| @@ -1,16 +1,20 @@ | |||
| from __future__ import annotations | |||
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If reviewer complains about this, I can undo the changes.
|
@encode/maintainers someone? 🙏 |
frankie567
approved these changes
Jan 20, 2024
starlette/testclient.py
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| except BaseException as exc: | ||
| self._send_queue.put(exc) | ||
| raise | ||
| tg.cancel_scope.cancel() |
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Shouldn't we also cancel the task group before raising the exception just above?
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nixroxursox
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Mar 18, 2024
* Cancel `WebSocketTestSession` on close * Undo some noise * Fix test * Undo pyproject * Undo anyio bump * Undo changes on test_authentication * Always call cancel scope
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