<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>A &lt;div&gt; with role role="listbox" aria-busy="true", but no "option" descendants.</title>
  </head>
  <body>
    <div id="test" role="listbox" aria-busy="true">
    </div>
  </body>
</html>