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Improve time change helper comments (#82349)

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* Improve time change helper comments

https://github.com/home-assistant/core/pull/82324#discussion_r1026962806

* Improve time change helper comments

https://github.com/home-assistant/core/pull/82324#discussion_r1026962806
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J. Nick Koston 2022-11-18 21:04:19 -06:00 committed by GitHub
parent 9fefa2e139
commit e4666206ec
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1 changed files with 10 additions and 7 deletions
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17
tests/common.py
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@ -385,10 +385,10 @@ def async_fire_time_changed_exact(
) -> None:
"""Fire a time changed event at an exact microsecond.
Consider that its not possible to actually achieve an exact microsecond
in production as the event loop is not precise enough. If your code
relies on this level of precision, consider a different approach
as this is only for testing.
Consider that it is not possible to actually achieve an exact
microsecond in production as the event loop is not precise enough.
If your code relies on this level of precision, consider a different
approach, as this is only for testing.
"""
if datetime_ is None:
utc_datetime = date_util.utcnow()
@ -404,10 +404,13 @@ def async_fire_time_changed(
) -> None:
"""Fire a time changed event.
This function will ensure microseconds at at least 500000
to account for the synchronization repeating listeners.
This function will add up to 0.5 seconds to the time to ensure that
it accounts for the accidental synchronization avoidance code in repeating
listeners.
If you need to fire an exact microsecond, use async_fire_time_changed_exact.
As asyncio is cooperative, we can't guarantee that the event loop will
run an event at the exact time we want. If you need to fire time changed
for an exact microsecond, use async_fire_time_changed_exact.
"""
if datetime_ is None:
utc_datetime = date_util.utcnow()