chromium/third_party/blink/web_tests/external/wpt/html/semantics/popovers/popover-inside-display-none.html

<!DOCTYPE html>
<meta charset="utf-8">
<link rel=author href="mailto:[email protected]">
<link rel=help href="https://open-ui.org/components/popover.research.explainer">
<link rel=help href="https://html.spec.whatwg.org/multipage/popover.html">
<link rel=match href="popover-inside-display-none-ref.html">

No popover should be displayed here.<p>

<div style="display:none">
    <div popover>This content should be hidden</div>
</div>

<script>
  const popover = document.querySelector('[popover]');
  popover.showPopover();
  if (!popover.matches(':popover-open'))
    document.body.appendChild(document.createTextNode('FAIL'));
</script>