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<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=635636
-->
<head>
  <title>Test for Bug 635636</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script src="/tests/SimpleTest/EventUtils.js"></script>
  <link rel="stylesheet" href="/tests/SimpleTest/test.css">
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=635636">Mozilla Bug 635636</a>
<p id="display"></p>
<div id="content">
</div>
<pre id="test">
<script type="application/javascript">

/** Test for Bug 635636 **/
SimpleTest.waitForExplicitFinish();
addLoadEvent(async function() {
  function openNewWindow(aURL) {
    return new Promise(resolve => {
      let contentWindow = window.open(aURL);
      contentWindow.addEventListener("load", () => {
        ok(true, aURL + " is loaded");
        resolve(contentWindow);
      }, { once: true });
    });
  }

  function unloadWindow(aWindow) {
    return new Promise(resolve => {
      aWindow.addEventListener("unload", () => {
        ok(true, "The window has been unloaded");
        SimpleTest.executeSoon(() => { resolve(0); });
      }, { once: true });
      aWindow.location = "file_bug635636_2.html";
    });
  }

  let contentWindow = await openNewWindow("file_bug635636.xhtml");

  contentWindow.addEventListener("load", () => { ok(true, "load"); });
  contentWindow.addEventListener("pageshow", () => { ok(true, "pageshow"); });

  let div = contentWindow.document.getElementsByTagName("div")[0];
  contentWindow.document.designMode = "on";

  await unloadWindow(contentWindow);

  div.remove();
  ok(true, "Should not crash");
  // Not needed for the crash
  contentWindow.close();
  SimpleTest.finish();
});

</script>
</pre>
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