LayoutTests/editing/execCommand/19653-2.html

<div id="description1">This tests splitting two paragraphs with InsertParagraph while the typing style is bold. New text entered after the split should be bold.</div>
<div id="edit1" contentEditable="true">xx</div>

<div id="description2">This tests splitting two paragraphs with InsertLineBreak while the typing style is bold. New text entered after the split should be bold. The inserted &lt;br&gt; doesn't need to be surrounded by a bold tag here.</div>
<div id="edit2" contentEditable="true">xx</div>

<script>
if (window.testRunner)
    window.testRunner.dumpAsText();
edit1 = document.getElementById("edit1");
edit1.focus();
text = edit1.firstChild;
window.getSelection().setPosition(text, 1);
document.execCommand("Bold");
document.execCommand("InsertParagraph");
document.execCommand("InsertText", false, "Bold");

edit2 = document.getElementById("edit2");
edit2.focus();
text = edit2.firstChild;
window.getSelection().setPosition(text, 1);
document.execCommand("Bold");
document.execCommand("InsertLineBreak");
document.execCommand("InsertText", false, "Bold");

if (window.testRunner)
    document.body.innerText = document.getElementById("description1").innerText + "\n" + edit1.innerHTML + "\n\n" +
                              document.getElementById("description2").innerText + "\n" + edit2.innerHTML;
</script>