In ARIA required owned elements, passed example 6:
<div role="menu">
<div role="group">
<span role="menuitem">Item 1</span>
<div role="group">
<span role="menuitem">Item 2</span>
<span role="menuitem">Item 3</span>
</div>
</div>
</div>
should fail rather than pass.
Per ARIA specs, the role="menu" accepts group as acc child only if one of the following is true:
Instead in this testcase, the group has another role group, which is not acceptable.