Bug 295810 – [ macOS Debug ] fast/dynamic/disappearing-content-on-size-change-crash.html is a constant timeout, extend() requires a Range to be added to the Selection

• Component: Layout and Rendering
• Status: NEW

[Bryan Medina]

fast/dynamic/disappearing-content-on-size-change-crash.html

is a constant timeout on all of macOS Debug

HISTORY: 
https://results.webkit.org/?suite=layout-tests&test=fast%2Fdynamic%2Fdisappearing-content-on-size-change-crash.html

TEXT DIFF:
--- /Volumes/Data/worker/Apple-Sequoia-Debug-AppleSilicon-WK1-Tests/build/layout-test-results/fast/dynamic/disappearing-content-on-size-change-crash-expected.txt
+++ /Volumes/Data/worker/Apple-Sequoia-Debug-AppleSilicon-WK1-Tests/build/layout-test-results/fast/dynamic/disappearing-content-on-size-change-crash-actual.txt
@@ -1,2 +1,3 @@
-
-This test passes if it doesn't crash.
+CONSOLE MESSAGE: Unhandled Promise Rejection: InvalidStateError: extend() requires a Range to be added to the Selection
+FAIL: Timed out waiting for notifyDone to be called
+testRunner?.dumpAsText(); testRunner?.waitUntilDone(); (async () => { const styleSheet = document.styleSheets[0]; styleSheet.disabled = true; styleSheet.insertRule(`:where(*) { display: table-cell; }`); const audio = document.createElement('audio'); document.documentElement.append(audio); audio.controls = true; audio.focus({ preventScroll: true }); await new Promise((resolve) => setTimeout(resolve)); styleSheet.insertRule(`audio { content: linear-gradient(red, blue rem(562pt, 7.86dvmin)) }`, styleSheet.length); document.execCommand('SelectAll'); styleSheet.disabled = false; getSelection().extend(document.documentElement); document.designMode = 'on'; document.execCommand('FontSize', false, '6'); // The following is just to reduce noise in the output. await new Promise(resolve => requestAnimationFrame(resolve)); styleSheet.disabled = true; testRunner?.notifyDone(); })(); This test passes if it doesn't crash.

TEXT DIFF URL:
https://build.webkit.org/results/Apple-Sequoia-Debug-AppleSilicon-WK1-Tests/297277@main%20(2633)/fast/dynamic/disappearing-content-on-size-change-crash-diff.txt

[Radar WebKit Bug Importer]

<rdar://problem/155644577>

[Bryan Medina]

I was able to reproduce the timeout at macOS Sequoia on apple silicon Debug ToT running as follows:

run-webkit-tests fast/dynamic/disappearing-content-on-size-change-crash.html --iterations=10 -f -1

[Bryan Medina]

It looks like this test has been constantly timing out since it has been introduced.

[EWS]

Test gardening commit 297284@main (6506544ee403): <https://commits.webkit.org/297284@main>

Reviewed commits have been landed. Closing PR #47915 and removing active labels.

[Claudio Saavedra]

This is also timing out on Debug glib platforms so I am moving the expectation to the main TestExpectation file.