1764164 - [wpt-sync] Sync PR 33585 - Prevent declarative shadow DOM from firing synchronous mutation events

Status: RESOLVED FIXED

(Core :: DOM: Core & HTML, task, P4)

Description

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Sync web-platform-tests PR 33585 into mozilla-central (this bug is closed when the sync is complete).

PR: https://github.com/web-platform-tests/wpt/pull/33585
Details from upstream follow.

Mason Freed <[e-mail]> wrote:

Prevent declarative shadow DOM from firing synchronous mutation events

Since the behavior of declarative Shadow DOM occurs during parsing,
no mutation events should be fired while parsing the \<template>
contents or moving the content from the \<template> over to the
shadow root.

Fixed: 1315283
Change-Id: Icc6223a92a0fac22a7939d09bda0da17d84a35fb
Reviewed-on: https://chromium-review.googlesource.com/3579090
WPT-Export-Revision: 4282f1a6dc5a019201a772e4fc45b1e5c8c1328e

Comment 1

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Pushed to try (stability) https://treeherder.mozilla.org/#/jobs?repo=try&revision=1398b50186fb0bbfd6d0d9113dac9bb3a387aa23

Comment 2

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

CI Results

Ran 11 Firefox configurations based on mozilla-central, and Firefox, Chrome, and Safari on GitHub CI

Total 1 tests and 2 subtests

Status Summary

Firefox

ERROR: 1

Chrome

OK : 1
PASS : 1
FAIL : 1

Safari

ERROR: 1

Links

Gecko CI (Treeherder)
GitHub PR Head
GitHub PR Base

Details

New Tests That Don't Pass

/shadow-dom/declarative/script-access.tentative.html: ERROR (Chrome: OK, Safari: ERROR)

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/28b0783c6dfa
[wpt PR 33585] - Prevent declarative shadow DOM from firing synchronous mutation events, a=testonly

Comment 4

[Norisz Fay [:noriszfay]]

https://hg.mozilla.org/mozilla-central/rev/28b0783c6dfa