LayoutTests/editing/selection/replace-selection-1.html

<script>
if (window.layoutTestController)
     layoutTestController.dumpEditingCallbacks();
</script>
<p>This tests for a bug when a selection is replaced by content with selectReplacement == true.  Below, you should see 'A new link' and  'link' should be selected.</p>
<div id="test" contenteditable="true">A new link</div>

<script>
var s = window.getSelection();
var e = document.getElementById("test");

s.setBaseAndExtent(e.firstChild, 6, e.firstChild, 10);
document.execCommand("InsertHTML", false, "<a id='link' href='http://www.google.com'>link</a>");
e = document.getElementById("link");
s.setBaseAndExtent(e.firstChild, 0, e.firstChild, 4);
</script>