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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=667520
-->
<head>
  <title>Test for Bug 667520</title>
  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=667520">Mozilla Bug 667520</a>
<p id="display">
  <!-- important: we need a <span> as the second element child and then
       non-span elements between that and the next </span> -->
  <i></i>
  <span id="2"></span>
  <i></i>
  <i></i>
  <i></i>
  <i></i>
  <span id="7"></span>
  <span id="8"></span>
</p>
<div id="content" style="display: none">
  
</div>
<pre id="test">
<script type="application/javascript">

/** Test for Bug 667520 **/
var spans = $("display").querySelectorAll("span");
is(spans.length, 3, "Should have 3 span kids");

is($("display").querySelector("span:nth-child(3)"), null, "Third child is not span");
is($("display").querySelector("span:nth-child(4)"), null, "Fourth child is not span");

for (var i = 0; i < spans.length; ++i) {
  var id = spans[i].id;
  /* Important: need to include 'span' in that selector so we only match
     nth-child against spans. */
  var target = $("display").querySelector("span:nth-child("+id+")");
  is(target, spans[i], "Unexpected element");
  is(target.id, spans[i].id, "Unexpected id");
}

</script>
</pre>
</body>
</html>