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|
from __future__ import annotations
import sys
from textwrap import dedent
import pytest
from pytest import Pytester
@pytest.mark.parametrize(
"test_loop_scope",
("function", "module", "package", "session"),
)
@pytest.mark.parametrize(
"loop_breaking_action",
[
"asyncio.set_event_loop(None)",
"asyncio.run(asyncio.sleep(0))",
pytest.param(
"with asyncio.Runner(): pass",
marks=pytest.mark.skipif(
sys.version_info < (3, 11),
reason="asyncio.Runner requires Python 3.11+",
),
),
],
)
def test_set_event_loop_none(
pytester: Pytester,
test_loop_scope: str,
loop_breaking_action: str,
):
pytester.makeini(
dedent(
f"""\
[pytest]
asyncio_default_test_loop_scope = {test_loop_scope}
asyncio_default_fixture_loop_scope = function
"""
)
)
pytester.makepyfile(
dedent(
f"""\
import asyncio
import pytest
pytest_plugins = "pytest_asyncio"
@pytest.mark.asyncio
async def test_before():
pass
def test_set_event_loop_none():
{loop_breaking_action}
@pytest.mark.asyncio
async def test_after():
pass
"""
)
)
result = pytester.runpytest_subprocess()
result.assert_outcomes(passed=3)
@pytest.mark.parametrize(
"loop_breaking_action",
[
"asyncio.set_event_loop(None)",
"asyncio.run(asyncio.sleep(0))",
pytest.param(
"with asyncio.Runner(): pass",
marks=pytest.mark.skipif(
sys.version_info < (3, 11),
reason="asyncio.Runner requires Python 3.11+",
),
),
],
)
def test_set_event_loop_none_class(pytester: Pytester, loop_breaking_action: str):
pytester.makeini(
dedent(
"""\
[pytest]
asyncio_default_test_loop_scope = class
asyncio_default_fixture_loop_scope = function
"""
)
)
pytester.makepyfile(
dedent(
f"""\
import asyncio
import pytest
pytest_plugins = "pytest_asyncio"
class TestClass:
@pytest.mark.asyncio
async def test_before(self):
pass
def test_set_event_loop_none(self):
{loop_breaking_action}
@pytest.mark.asyncio
async def test_after(self):
pass
"""
)
)
result = pytester.runpytest_subprocess()
result.assert_outcomes(passed=3)
@pytest.mark.parametrize("test_loop_scope", ("module", "package", "session"))
@pytest.mark.parametrize(
"loop_breaking_action",
[
"asyncio.set_event_loop(None)",
"asyncio.run(asyncio.sleep(0))",
pytest.param(
"with asyncio.Runner(): pass",
marks=pytest.mark.skipif(
sys.version_info < (3, 11),
reason="asyncio.Runner requires Python 3.11+",
),
),
],
)
def test_original_shared_loop_is_reinstated_not_fresh_loop(
pytester: Pytester,
test_loop_scope: str,
loop_breaking_action: str,
):
pytester.makeini(
dedent(
f"""\
[pytest]
asyncio_default_test_loop_scope = {test_loop_scope}
asyncio_default_fixture_loop_scope = function
"""
)
)
pytester.makepyfile(
dedent(
f"""\
import asyncio
import pytest
pytest_plugins = "pytest_asyncio"
original_shared_loop: asyncio.AbstractEventLoop = None
@pytest.mark.asyncio
async def test_store_original_shared_loop():
global original_shared_loop
original_shared_loop = asyncio.get_running_loop()
original_shared_loop._custom_marker = "original_loop_marker"
def test_unset_event_loop():
{loop_breaking_action}
@pytest.mark.asyncio
async def test_verify_original_loop_reinstated():
global original_shared_loop
current_loop = asyncio.get_running_loop()
assert current_loop is original_shared_loop
assert hasattr(current_loop, '_custom_marker')
assert current_loop._custom_marker == "original_loop_marker"
"""
)
)
result = pytester.runpytest("--asyncio-mode=strict")
result.assert_outcomes(passed=3)
@pytest.mark.parametrize("test_loop_scope", ("module", "package", "session"))
@pytest.mark.parametrize(
"loop_breaking_action",
[
"asyncio.set_event_loop(None)",
"asyncio.run(asyncio.sleep(0))",
pytest.param(
"with asyncio.Runner(): pass",
marks=pytest.mark.skipif(
sys.version_info < (3, 11),
reason="asyncio.Runner requires Python 3.11+",
),
),
],
)
def test_shared_loop_with_fixture_preservation(
pytester: Pytester,
test_loop_scope: str,
loop_breaking_action: str,
):
pytester.makeini(
dedent(
f"""\
[pytest]
asyncio_default_test_loop_scope = {test_loop_scope}
asyncio_default_fixture_loop_scope = {test_loop_scope}
"""
)
)
pytester.makepyfile(
dedent(
f"""\
import asyncio
import pytest
import pytest_asyncio
pytest_plugins = "pytest_asyncio"
fixture_loop: asyncio.AbstractEventLoop = None
long_running_task = None
@pytest_asyncio.fixture
async def webserver():
global fixture_loop, long_running_task
fixture_loop = asyncio.get_running_loop()
async def background_task():
while True:
await asyncio.sleep(1)
long_running_task = asyncio.create_task(background_task())
yield
long_running_task.cancel()
@pytest.mark.asyncio
async def test_before(webserver):
global fixture_loop, long_running_task
assert asyncio.get_running_loop() is fixture_loop
assert not long_running_task.done()
def test_set_event_loop_none():
{loop_breaking_action}
@pytest.mark.asyncio
async def test_after(webserver):
global fixture_loop, long_running_task
current_loop = asyncio.get_running_loop()
assert current_loop is fixture_loop
assert not long_running_task.done()
"""
)
)
result = pytester.runpytest("--asyncio-mode=strict")
result.assert_outcomes(passed=3)
@pytest.mark.parametrize(
"first_scope,second_scope",
[
("module", "session"),
("session", "module"),
("package", "session"),
("session", "package"),
("package", "module"),
("module", "package"),
],
)
@pytest.mark.parametrize(
"loop_breaking_action",
[
"asyncio.set_event_loop(None)",
"asyncio.run(asyncio.sleep(0))",
pytest.param(
"with asyncio.Runner(): pass",
marks=pytest.mark.skipif(
sys.version_info < (3, 11),
reason="asyncio.Runner requires Python 3.11+",
),
),
],
)
def test_shared_loop_with_multiple_fixtures_preservation(
pytester: Pytester,
first_scope: str,
second_scope: str,
loop_breaking_action: str,
):
pytester.makeini(
dedent(
"""\
[pytest]
asyncio_default_test_loop_scope = session
asyncio_default_fixture_loop_scope = session
"""
)
)
pytester.makepyfile(
dedent(
f"""\
import asyncio
import pytest
import pytest_asyncio
pytest_plugins = "pytest_asyncio"
first_fixture_loop: asyncio.AbstractEventLoop = None
second_fixture_loop: asyncio.AbstractEventLoop = None
first_long_running_task = None
second_long_running_task = None
@pytest_asyncio.fixture(scope="{first_scope}", loop_scope="{first_scope}")
async def first_webserver():
global first_fixture_loop, first_long_running_task
first_fixture_loop = asyncio.get_running_loop()
async def background_task():
while True:
await asyncio.sleep(0.1)
first_long_running_task = asyncio.create_task(background_task())
yield
first_long_running_task.cancel()
@pytest_asyncio.fixture(scope="{second_scope}", loop_scope="{second_scope}")
async def second_webserver():
global second_fixture_loop, second_long_running_task
second_fixture_loop = asyncio.get_running_loop()
async def background_task():
while True:
await asyncio.sleep(0.1)
second_long_running_task = asyncio.create_task(background_task())
yield
second_long_running_task.cancel()
@pytest.mark.asyncio(loop_scope="{first_scope}")
async def test_before_first(first_webserver):
global first_fixture_loop, first_long_running_task
assert asyncio.get_running_loop() is first_fixture_loop
assert not first_long_running_task.done()
@pytest.mark.asyncio(loop_scope="{second_scope}")
async def test_before_second(second_webserver):
global second_fixture_loop, second_long_running_task
assert asyncio.get_running_loop() is second_fixture_loop
assert not second_long_running_task.done()
def test_set_event_loop_none():
{loop_breaking_action}
@pytest.mark.asyncio(loop_scope="{first_scope}")
async def test_after_first(first_webserver):
global first_fixture_loop, first_long_running_task
current_loop = asyncio.get_running_loop()
assert current_loop is first_fixture_loop
assert not first_long_running_task.done()
@pytest.mark.asyncio(loop_scope="{second_scope}")
async def test_after_second(second_webserver):
global second_fixture_loop, second_long_running_task
current_loop = asyncio.get_running_loop()
assert current_loop is second_fixture_loop
assert not second_long_running_task.done()
"""
)
)
result = pytester.runpytest("--asyncio-mode=strict")
result.assert_outcomes(passed=5)
|
