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haikuwebkit/LayoutTests/fast/shadow-dom/signal-slot-list-retains-js...

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imported/w3c/web-platform-tests/shadow-dom/slotchange.html is a flaky failure https://bugs.webkit.org/show_bug.cgi?id=167652 Reviewed by Saam Barati. Source/WebCore: The bug appears to be caused by the JS wrappers of slot elements getting prematurely collected. Deployed GCReachableRef introduced in r236376 to fix the bug. Test: fast/shadow-dom/signal-slot-list-retains-js-wrappers.html * dom/MutationObserver.cpp: (WebCore::signalSlotList): (WebCore::MutationObserver::enqueueSlotChangeEvent): (WebCore::MutationObserver::notifyMutationObservers): LayoutTests: Added a regression test for signaling a lot of slot elements. * fast/shadow-dom/signal-slot-list-retains-js-wrappers-expected.txt: Added. * fast/shadow-dom/signal-slot-list-retains-js-wrappers.html: Added. Canonical link: https://commits.webkit.org/204892@main git-svn-id: https://svn.webkit.org/repository/webkit/trunk@236440 268f45cc-cd09-0410-ab3c-d52691b4dbfc
2018-09-24 23:11:36 +00:00
This tests signaling a slot change on lots of slot elements in a single microtask.
WebKit should retain the JS wrappers of those elements and fire the slotchange event.
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PASS