selectlist-listbox-element.tentative.html

<!DOCTYPE html>
<link rel=author href="mailto:[email protected]">
<link rel=help href="https://github.com/openui/open-ui/issues/702">
<link rel=match href="selectlist-listbox-element-ref.html">

<selectlist>
  <button type=selectlist>button</button>
  <listbox>
    <option>one</option>
    <option>two</option>
  </listbox>
</selectlist>

<script>
document.querySelector('button').click();
</script>

chromium/third_party/blink/web_tests/external/wpt/html/semantics/forms/the-selectlist-element/selectlist-listbox-element.tentative.html