third_party/WebKit/LayoutTests/editing/execCommand/remove-list-items.html

<script>
if (window.testRunner) {
    testRunner.dumpEditingCallbacks();
    testRunner.dumpAsText();
}

function log(message) {
    var console = document.getElementById("console");
    var text = document.createTextNode(message);
    console.appendChild(text);
}

</script>
<p>This test checks to see that Insert{Un}OrderedList can remove items from a list, can remove empty list when they are emptied, and can remove content from orphaned list items.</p>
<div id="div" contenteditable="true">
<ol style="border: 1px solid red;">
    <li>foo</li>
    <span id="item1">This should not be a list.</span>
    <br><br>
    bar
    <li>baz</li>
    <span id="item2">This should not be in a list.</span>
    <li>foo</li>
    <li><span id="item3">This should not be in a list.</span></li>
    <li>bar</li>
</ol>
<li><span id="item4">This should not be in a list.</span></li>
<ul><li><span id="item5">This should not be in a list.</span></li></ul>
</div>
<p id="console"></p>

<script>
var s = window.getSelection();
s.collapse(document.getElementById("item1"), 0);
document.execCommand("InsertOrderedList", false, "");
s.collapse(document.getElementById("item2"), 0);
document.execCommand("InsertOrderedList", false, "");
s.collapse(document.getElementById("item3"), 0);
document.execCommand("InsertOrderedList", false, "");
s.collapse(document.getElementById("item4"), 0);
document.execCommand("InsertUnorderedList", false, "");
s.collapse(document.getElementById("item5"), 0);
document.execCommand("InsertUnorderedList", false, "");

log(div.innerHTML);

</script>