lang-pseudo-class-in-has-multiple-document-elements.html

<!DOCTYPE html>
<html lang="fr" class="reftest-wait">
<link rel="author" title="Ryosuke Niwa" href="mailto:[email protected]"/>
<link rel="help" href="https://drafts.csswg.org/selectors/#relational">
<link rel="help" href="https://drafts.csswg.org/selectors/#lang-pseudo">
<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
<body>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div><span></span></div>
<script>
const test = document.querySelector('div').matches('*:has(:lang(fr))') ? 'PASS' : 'FAIL';

const newDocumentElement = document.createElement('html');
newDocumentElement.lang = 'en';
document.replaceChild(newDocumentElement, document.documentElement);
document.documentElement.innerHTML = `
<head>
<style>
    div { width: 100px; height: 100px; }
    div:has(*:lang(fr)) { background: red; }
    div:has(*:lang(en)) { background: green; }
    span.pass { color: green; }
    span.fail { color: red; }
</style>
</head>
<body>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div><span class="${test.toLowerCase()}">${test}</span></div>
</body>`;
</script>
</body>
</html>

chromium/third_party/blink/web_tests/external/wpt/css/selectors/invalidation/lang-pseudo-class-in-has-multiple-document-elements.html