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sousa-gecko/testing/web-platform/tests/css/css-shadow/shadow-host-removal-invalidation.html
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Rune Lillesveen 3488f5d543 Bug 2011290 [wpt PR 57244] - Move css-scoping/ tests to css-shadow/ to match spec, a=testonly
Automatic update from web-platform-tests
Move css-scoping/ tests to css-shadow/ to match spec

Change-Id: Ie65e06f4160b9edfee12c1dbcad05f26b17a77b0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7484758
Reviewed-by: Anders Hartvoll Ruud <andruud@chromium.org>
Commit-Queue: Rune Lillesveen <futhark@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1570418}

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wpt-commits: 1242323699cb7c21b584ce0554e621d172b6d985
wpt-pr: 57244
2026-01-23 14:41:13 +00:00

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921 B
HTML

<!doctype html>
<title>CSS Test: Invalidation of :host selectors</title>
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
<link rel="author" title="Mozilla" href="https://mozilla.org">
<link rel="help" href="https://drafts.csswg.org/css-shadow/#host-selector">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1499603">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="host" style="color: green"></div>
<script>
host.attachShadow({ mode: "open" }).innerHTML = `
<style>
:host { color: red !important }
</style>
`;
test(function() {
assert_equals(getComputedStyle(host).color, "rgb(255, 0, 0)");
host.shadowRoot.querySelector("style").remove();
assert_equals(getComputedStyle(host).color, "rgb(0, 128, 0)");
}, ":host rules are properly invalidated when stylesheets are removed");
</script>