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from textual.app import App
from textual.widgets import Label
class SelfRemovingLabel(Label):
async def on_mount(self) -> None:
await self.remove()
class RemoveOnTimerApp(App[None]):
def on_mount(self):
for _ in range(5):
self.mount(SelfRemovingLabel("I will remove myself!"))
async def test_multiple_simultaneous_removals():
"""Regression test for https://github.com/Textualize/textual/issues/2854."""
# The app should run and finish without raising any errors.
async with RemoveOnTimerApp().run_test() as pilot:
# Sanity check to ensure labels were removed.
assert len(pilot.app.query(Label)) == 0
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