="listbox" aria-label="foo">
  <ul role="group" id="listbox-group-5" class="fail">
    <li></li>
  </ul>
</div>

<!-- Children elements of group that should pass -->

<div role="listbox" aria-label="foo">
  <div role="group" id="listbox-group-6" class="pass">
    <div role="option" aria-label="bar"></div>
  </div>
</div>

<div role="listbox" aria-label="foo">
  <ul role="group" id="listbox-group-7" class="pass">
    <li role="option" aria-label="bar"></li>
  </ul>
</div>

<ul role="listbox" aria-label="foo"