top-layer-remove-popover-attribute.html

<!DOCTYPE html>
<html>
<meta charset="utf-8">
<meta name="assert" content="Removing the popover attribute of a hidden popover should not remove the dialog from the top layer.">
<head>
  <title>Shown modal dialog where the popover attribute is removed</title>
  <link rel="help" href="https://html.spec.whatwg.org/multipage/popover.html#hide-popover-algorithm">
  <link rel="match" href="top-layer-remove-popover-attribute-ref.html">
</head>
<body>
  <dialog popover style="padding: 2em"></dialog>
  <script>
    const d = document.querySelector("dialog");
    d.showModal();
    d.popover = null;
  </script>
</body>
<html>

chromium/third_party/blink/web_tests/external/wpt/html/semantics/interactive-elements/the-dialog-element/top-layer-remove-popover-attribute.html