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<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=640158
-->
<window title="Mozilla Bug 640158" id="rootwin"
  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>

  <!-- test results are displayed in the html:body -->
  <body xmlns="http://www.w3.org/1999/xhtml">
  <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=640158"
     target="_blank">Mozilla Bug 640158</a>
  </body>

  <!-- test code goes here -->
  <script type="application/javascript"><![CDATA[

  SimpleTest.waitForExplicitFinish();
  window.onload = function onload() {
    is($("foo").getAttribute("testattr"), "original", "Attribute should be in original state");
    // Change and persist another value:
    $("foo").setAttribute("testattr", "changed");
    document.persist("foo", "testattr");
    $("foo").setAttribute("testattr", "original");

    // Hacky times: check that items which are overlaid do get persisted into correctly,
    // by first creating an extra element and persisting the value before loading an
    // overlay that changes that value - the persisted value should be reinstated.
    let root = document.documentElement;
    let bar = document.createElement("box");
    bar.id = "bar";
    bar.setAttribute("testattr", "changed"); // The overlay we load has 'original'
    root.appendChild(bar);
    document.persist("bar", "testattr");
    document.loadOverlay(location.href.replace(/[^\\\/]*.xul/, "overlay_bug640158.xul"), function() {
      is($("foo").getAttribute("testattr"), "original",
         "Non-overlaid attribute should still be in original state");
      is($("bar").getAttribute("testattr"), "changed",
         "Overlaid attribute should have been changed.");
      SimpleTest.finish();
    });
  }

  ]]></script>

  <box id="foo" testattr="original"/>

</window>