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from __future__ import annotations
from textwrap import dedent
from pytest import Pytester
def test_task_is_cancelled_when_abandoned_by_test(pytester: Pytester):
pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
pytester.makepyfile(
dedent(
"""\
import asyncio
import pytest
@pytest.mark.asyncio
async def test_create_task():
async def coroutine():
try:
while True:
await asyncio.sleep(0)
finally:
raise RuntimeError("The task should be cancelled at this point.")
asyncio.create_task(coroutine())
"""
)
)
result = pytester.runpytest("--asyncio-mode=strict")
result.assert_outcomes(passed=1)
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