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sousa-gecko/testing/web-platform/tests/css/css-shadow/part/host-part-003.html
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Rune Lillesveen 08bc02fbc8 Bug 2011292 [wpt PR 57245] - Move css-shadow-parts/ tests to css-shadow/part/, a=testonly
Automatic update from web-platform-tests
Move css-shadow-parts/ tests to css-shadow/part/

The css-shadow-parts spec is now part of css-shadow. Kept a separate
directory to make it easier for the META.yml and feature mapping.

Change-Id: I9d2572ad4f31d8dd7dd1aacf76209028c6a3d84a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7485890
Reviewed-by: Anders Hartvoll Ruud <andruud@chromium.org>
Commit-Queue: Rune Lillesveen <futhark@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1570431}

--

wpt-commits: 680e4cf3fcabe4a6de1deb7fc36eb84d8278eedd
wpt-pr: 57245
2026-01-23 14:41:19 +00:00

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966 B
HTML

<!DOCTYPE html>
<title>CSS Shadow Parts - :host::part() not matching in inner scope</title>
<link rel="help" href="https://drafts.csswg.org/css-shadow/#part">
<link rel="help" href="https://drafts.csswg.org/css-shadow/#host-selector">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="outer">
<template shadowrootmode="open">
<style>
:host::part(x) {
color: red;
}
</style>
<div id="inner">
<template shadowrootmode="open">
<style>
p { color: green; }
</style>
<p part="x">This should not be red</p>
</template>
</div>
</template>
</div>
<script>
test(() => {
const part = outer.shadowRoot.querySelector("#inner").shadowRoot.querySelector("p");
assert_equals(getComputedStyle(part).color, "rgb(0, 128, 0)");
}, ":host::part() should only match when the part is in the same tree as the rule");
</script>