test_bug780199.xhtml

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<?xml version="1.0"?>

<?xml-stylesheet type="text/css" href="chrome://global/skin"?>

<?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"?>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=780199

-->

<window title="Mozilla Bug 780199"

        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"

        onload="test()">

  <script 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=780199"

     target="_blank">Mozilla Bug 780199</a>

  </body>

  <!-- test code goes here -->

  <script type="application/javascript">

  <![CDATA[

  /** Test for Bug 780199 */

  SimpleTest.waitForExplicitFinish();

  var b;

  function callback(r) {

    is(r[0].type, "attributes");

    is(r[0].oldValue, b.getAttribute("src"));

    setTimeout(continueTest, 500);

  function continueTest() {

    // Check that a new page wasn't loaded.

    is(b.contentDocument.documentElement.textContent, "testvalue");

    SimpleTest.finish();

  function test() {

    b = document.getElementById("b");

    var m = new MutationObserver(callback);

    m.observe(b, { attributes: true, attributeOldValue: true });

    b.contentDocument.documentElement.textContent = "testvalue";

    b.setAttribute("src", b.getAttribute("src"));

]]>

  </script>

  <browser id="b" src="data:text/plain,initial"/>

</window>