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Tests: Import some ::part() tests

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This commit is contained in:
Sam Atkins
2025-12-09 14:08:02 +00:00
parent f9f4c36f20
commit 53609c49ce
Notes: github-actions[bot] 2025-12-15 14:14:19 +00:00 
Author: https://github.com/AtkinsSJ
Commit: https://github.com/LadybirdBrowser/ladybird/commit/53609c49cec
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/7077
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Tests/LibWeb/Text/input/wpt-import/css/css-shadow-parts/host-part-nesting.html Normal file
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<!doctype html>
<title>CSS Shadow Parts - :host::part() in nesting</title>
<link rel="help" href="https://drafts.csswg.org/css-shadow-parts/#part">
<link rel="help" href="https://drafts.csswg.org/css-scoping/#host-selector">
<link rel="help" href="https://crbug.com/326526716">
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<div id="host"></div>
<script>
test(function() {
let host = document.getElementById("host");
host.attachShadow({ mode: "open" }).innerHTML = `
<style>
:host {
&::part(mypart) {
color: lime;
}
}
</style>
<div part="mypart">This text should be green.</div>
`;
let part = host.shadowRoot.querySelector("[part]");
assert_equals(
window.getComputedStyle(part).color,
"rgb(0, 255, 0)",
":host::part() works in nesting",
);
}, ":host::part works in nesting");
</script>