Add regression tests for throttle permit release edge cases#2287
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Motivation:
PR #2280 covered the reentrant release case, but left several permit-release paths untested. In particular, non-reentrant callback paths and concurrent double-release races were not verified.
Modification:
Add four tests to
ReleasePermitOnCompleteTestcovering theonCompleted()exception path, single-callback release baselines, and a concurrent cross-thread double-release race.Result:
Better test coverage for edge cases