test_runner: avoid reusing V8 serializers - #65951
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A serializer must not be used after releaseBuffer() is called. Use a dedicated instance to calculate the header length and create a new serializer for each test event. Add a regression test that serializes the same object twice and verifies that both frames can be deserialized independently. Signed-off-by: inoway46 <inoueyuya416@gmail.com> Assisted-by: Codex
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #65951 +/- ##
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Coverage 90.16% 90.17%
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Files 771 771
Lines 265489 265490 +1
Branches 50471 50469 -2
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+ Hits 239388 239414 +26
+ Misses 17042 17007 -35
- Partials 9059 9069 +10
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Serializer#releaseBuffer()documents that a serializer should not be used after its buffer has been released.This change follows that contract by using a dedicated serializer for the header length and a new serializer for each test event.
This was found while investigating the intermittent Windows crash in the referenced issue and may be its cause.
Refs: #65756