chromium/third_party/blink/web_tests/fast/overflow/childFocusRingClip.html

<div style="overflow:auto; width:250px; white-space:nowrap;">
<div style="padding:5px;">
<a id="focus_me">focused overflow:auto text that doesn't fit in its div</a>
</div>
</div>
<script> 
	document.getElementById("focus_me").focus();
</script>