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test: fix flaky test-http2-close-while-writing#61764
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Use stream.once() instead of stream.on() for the 'data' event handler to prevent multiple calls when receiving large data chunks. The test sends 64KB of data which may arrive in multiple chunks, causing the destroy callback to fire multiple times and leading to intermittent timeouts on macOS. Refs: nodejs/reliability#1459
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Summary
Fixes flaky test
test/parallel/test-http2-close-while-writing.jswhich was timing out on macOS.Problem
The test uses
stream.on('data', ...)which can fire multiple times when receiving the 64KB data chunk sent by the client. Eachdataevent triggersclient_stream.destroy()viaprocess.nextTick(), leading to multiple destroy calls and intermittent timeouts.Solution
Changed
stream.on('data', ...)tostream.once('data', ...)to ensure the callback only fires once, regardless of how many data chunks arrive. This pattern is consistent with similar tests liketest-http2-many-writes-and-destroy.js.Verification
Verified with
python3 tools/test.py --repeat 100without failures.Refs: nodejs/reliability#1459