starlette/tests/test_concurrency.py

43 lines
1.1 KiB
Python

from contextvars import ContextVar
import anyio
import pytest
from starlette.applications import Starlette
from starlette.concurrency import run_until_first_complete
from starlette.requests import Request
from starlette.responses import Response
from starlette.routing import Route
@pytest.mark.anyio
async def test_run_until_first_complete():
task1_finished = anyio.Event()
task2_finished = anyio.Event()
async def task1():
task1_finished.set()
async def task2():
await task1_finished.wait()
await anyio.sleep(0) # pragma: nocover
task2_finished.set() # pragma: nocover
await run_until_first_complete((task1, {}), (task2, {}))
assert task1_finished.is_set()
assert not task2_finished.is_set()
def test_accessing_context_from_threaded_sync_endpoint(test_client_factory) -> None:
ctxvar: ContextVar[bytes] = ContextVar("ctxvar")
ctxvar.set(b"data")
def endpoint(request: Request) -> Response:
return Response(ctxvar.get())
app = Starlette(routes=[Route("/", endpoint)])
client = test_client_factory(app)
resp = client.get("/")
assert resp.content == b"data"