LayoutTests/editing/selection/mixed-editability-4.html

<script>
if (window.layoutTestController)
     layoutTestController.dumpEditingCallbacks();
</script>
<p>This tests moving the caret forward through content of mixed editability.  The caret should move down one line from the editable piece to the editable piece that's embedded in a non-editable piece.</p>

<div contenteditable="true">
editable
<table border="1" contenteditable="false"><tr><td contenteditable="true" id="test">editable</td></tr></table>
editable
</div>

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

s.setPosition(e, 0);

s.modify("move", "backward", "line");
</script>