test_bug1551425_reference_to_childnodes_nodelist_keeps_childnodes_alive.html

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<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=1551425

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  <meta charset="utf-8">

  <title>

      Test for bug 1551425: check reference to childNodes' NodeList keeps the

      child nodes alive.

  </title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" href="/tests/SimpleTest/test.css"/>

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<body>

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1551425">Mozilla bug 1551425</a>

<p id="display"></p>

<div id="content" style="display: none">

  <div id="d"><div>d2</div></div>

</div>

<pre id="test">

  <script>

    var d = document.getElementById("d");

    // Get childNodes, don't keep reference to parent.

    var childNodes = d.cloneNode(true).childNodes;

    // Trigger GC to remove the cloned node.

    SpecialPowers.gc();

    is(childNodes.length, 1);

    is(childNodes[0].textContent, "d2");

  </script>

</pre>

</body>

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