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import asyncio
import time
import sys
import pytest
from textual.app import App
pytestmark = pytest.mark.skipif(
sys.platform != "win32", reason="We only need to test this on Windows."
)
def test_win_sleep_timer_is_cancellable():
"""Regression test for https://github.com/Textualize/textual/issues/2711.
When we exit an app with a "long" timer, everything asyncio-related
should shutdown quickly. So, we create an app with a timer that triggers
every SLEEP_FOR seconds and we shut the app down immediately after creating
it. `asyncio` should be done quickly (i.e., the timer was cancelled) and
thus the total time this takes should be considerably lesser than the time
we originally set the timer for.
"""
SLEEP_FOR = 10
class WindowsIntervalBugApp(App[None]):
def on_mount(self) -> None:
self.set_interval(SLEEP_FOR, lambda: None)
def key_e(self):
self.exit()
async def actual_test():
async with WindowsIntervalBugApp().run_test() as pilot:
await pilot.press("e")
start = time.perf_counter()
asyncio.run(actual_test())
end = time.perf_counter()
assert end - start < 1
|
