Fix cancellation tests with new Twisted. #17906
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The latest Twisted release changed how they implemented `__await__` on
deferreds, which broke the machinery we used to test cancellation.
This PR changes things a bit to instead patch the `__await__` method,
which is a stable API. This mostly doesn't change the core logic, except
for fixing two bugs:
- We previously did not intercept all await points
- After cancellation we now need to not only unblock currently blocked
await points, but also make sure we don't block any future await
points.
c.f. twisted/twisted#12226
devonh
requested changes
Nov 6, 2024
erikjohnston
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this pull request
Nov 7, 2024
Co-authored-by: Devon Hudson <devon.dmytro@gmail.com>
devonh
approved these changes
Nov 7, 2024
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The latest Twisted release changed how they implemented
__await__on deferreds, which broke the machinery we used to test cancellation.This PR changes things a bit to instead patch the
__await__method, which is a stable API. This mostly doesn't change the core logic, except for fixing two bugs:c.f. twisted/twisted#12226