Test Case Boilerplate

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HTML

<script src="http://code.jquery.com/ui/jquery-ui-git.js"></script>
<link rel="stylesheet" href="http://code.jquery.com/ui/jquery-ui-git.css">
    <div>
        <ul></ul>
        <ul></ul>
    </div>
    <button id="fill">fill elements</button>
    <button id="bug">make bug</button>

JavaScript

Array.prototype.buggy = function(){ alert("BUG!!!"); }
    
$("#fill").click(function(){
       $("<LI>")
       .text( "TEST" )
       .draggable()
       .appendTo( $( "ul" ) );
});

$("#bug").click(function(){
    $('div').html( '<ul></ul><ul></ul>' );
});