Test Case Boilerplate

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HTML

<ul>
    <li>foo</li>
    <li>bar</li>
    <!-- comment -->
</ul>

JavaScript

$('ul').contents().filter(function() {
    if (this.nodeType != 8)
        return;
    $('<li>baz</li><li>qux</li>').insertBefore(this);
}).end();