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|
from __future__ import annotations
from textwrap import dedent
from pytest import Pytester
def test_event_loop_fixture_finalizer_returns_fresh_loop_after_test(pytester: Pytester):
pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
pytester.makepyfile(
dedent(
"""\
import asyncio
import pytest
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
@pytest.mark.asyncio
async def test_1():
# This async test runs in its own event loop
global loop
running_loop = asyncio.get_event_loop_policy().get_event_loop()
# Make sure this test case received a different loop
assert running_loop is not loop
def test_2():
# Code outside of pytest-asyncio should not receive a "used" event loop
current_loop = asyncio.get_event_loop_policy().get_event_loop()
assert not current_loop.is_running()
assert not current_loop.is_closed()
"""
)
)
result = pytester.runpytest("--asyncio-mode=strict")
result.assert_outcomes(passed=2)
def test_event_loop_fixture_finalizer_handles_loop_set_to_none_sync(
pytester: Pytester,
):
pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
pytester.makepyfile(
dedent(
"""\
import asyncio
def test_sync(event_loop):
asyncio.get_event_loop_policy().set_event_loop(None)
"""
)
)
result = pytester.runpytest("--asyncio-mode=strict")
result.assert_outcomes(passed=1)
def test_event_loop_fixture_finalizer_handles_loop_set_to_none_async_without_fixture(
pytester: Pytester,
):
pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
pytester.makepyfile(
dedent(
"""\
import asyncio
import pytest
@pytest.mark.asyncio
async def test_async_without_explicit_fixture_request():
asyncio.get_event_loop_policy().set_event_loop(None)
"""
)
)
result = pytester.runpytest("--asyncio-mode=strict")
result.assert_outcomes(passed=1)
def test_event_loop_fixture_finalizer_handles_loop_set_to_none_async_with_fixture(
pytester: Pytester,
):
pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
pytester.makepyfile(
dedent(
"""\
import asyncio
import pytest
@pytest.mark.asyncio
async def test_async_with_explicit_fixture_request(event_loop):
asyncio.get_event_loop_policy().set_event_loop(None)
"""
)
)
result = pytester.runpytest_subprocess("--asyncio-mode=strict", "-W default")
result.assert_outcomes(passed=1, warnings=1)
result.stdout.fnmatch_lines(
'*is asynchronous and explicitly requests the "event_loop" fixture*'
)
def test_event_loop_fixture_finalizer_raises_warning_when_fixture_leaves_loop_unclosed(
pytester: Pytester,
):
pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
pytester.makepyfile(
dedent(
"""\
import asyncio
import pytest
pytest_plugins = 'pytest_asyncio'
@pytest.fixture
def event_loop():
loop = asyncio.get_event_loop_policy().new_event_loop()
yield loop
@pytest.mark.asyncio
async def test_ends_with_unclosed_loop():
pass
"""
)
)
result = pytester.runpytest_subprocess("--asyncio-mode=strict", "-W", "default")
result.assert_outcomes(passed=1, warnings=2)
result.stdout.fnmatch_lines("*unclosed event loop*")
def test_event_loop_fixture_finalizer_raises_warning_when_test_leaves_loop_unclosed(
pytester: Pytester,
):
pytester.makeini("[pytest]\nasyncio_default_fixture_loop_scope = function")
pytester.makepyfile(
dedent(
"""\
import asyncio
import pytest
pytest_plugins = 'pytest_asyncio'
@pytest.mark.asyncio
async def test_ends_with_unclosed_loop():
asyncio.set_event_loop(asyncio.new_event_loop())
"""
)
)
result = pytester.runpytest_subprocess("--asyncio-mode=strict", "-W", "default")
result.assert_outcomes(passed=1, warnings=1)
result.stdout.fnmatch_lines("*unclosed event loop*")
|
