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<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1429982
-->
<head>
  <title>Test for Bug 1429982</title>
  <script type="text/javascript" src="head.js"></script>
  <script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
  <script 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=1429982">Mozilla Bug 1429982</a>
<p id="display"></p>
<div id="content" style="display: none">

</div>
<pre id="test">
<script class="testbody" type="text/javascript">

/** Test for Bug 1429982 **/
SimpleTest.waitForExplicitFinish();
createIframe()
  .then((aDocument) => {
    var element = aDocument.createElement("div");
    var shadowRoot = element.attachShadow({mode: "open"});
    var thrownException = false;

    try {
      shadowRoot.cloneNode();
    } catch(err) {
      thrownException = err;
    }

    ok(thrownException !== false, "An exception should've been thrown");
    is(thrownException.name, "NotSupportedError", "A NotSupportedError exception should've been thrown");

    SimpleTest.finish();
  });
</script>
</pre>
</body>
</html>

