chromium/content/test/data/accessibility/aria/aria-expanded.html

<!--
@MAC-ALLOW:AXExpanded
@WIN-ALLOW:EXPANDED*
@WIN-ALLOW:COLLAPSED*
@WIN-ALLOW:HASPOPUP*
@WIN-ALLOW:haspopup*
@BLINK-ALLOW:haspopup*
@AURALINUX-ALLOW:expanded*
@AURALINUX-ALLOW:collapsed*
@AURALINUX-ALLOW:haspopup:*
@AURALINUX-ALLOW:select*
-->
<ul role="menu" style="list-style-type: none">
  <li role="menuitem" aria-haspopup="true" aria-expanded="false">New</li>
  <li role="menuitem" aria-haspopup="true" aria-expanded="true">Open</li>
  <li role="menuitem" aria-expanded="false">Save</li>
  <li role="menuitem" aria-expanded="true">Quit</li>
</ul>

<!-- Following ARIA roles are not permitted to have aria-expanded -->
<div role="separator" aria-expanded="false">ARIA separator. aria-expanded value set to false.</div>
<div role="separator" aria-expanded="true">ARIA separator. aria-expanded value set to true.</div>
<hr role="separator" aria-expanded="true">