<!doctype html>
<title>CSS Test: @font-face from the document applies in the shadow tree.</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<link rel="author" title="Alan Stearns" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/css-scoping/#shadow-names">
<style>
@font-face {
font-family: ff-16-wide;
src: url(/fonts/Ahem.ttf);
}
</style>
<div id="host"><span id="in-document">1234567890</span></div>
<script>
promise_test(async () => {
host.attachShadow({ mode: "open" }).innerHTML = `
<style>
#in-shadow {
font-family: ff-16-wide;
}
</style>
<slot></slot>
<span id="in-shadow">0123456789</span>
`;
await document.fonts.ready;
assert_not_equals(document.getElementById('in-document').offsetWidth, 160);
assert_equals(host.shadowRoot.getElementById('in-shadow').offsetWidth, 160);
}, "@font-face from the document applies in the shadow tree");
</script>
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