gecko-dev/docshell/test/chrome/bug89419_window.xul

<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin" type="text/css"?>

<window id="89419Test"
        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
        width="600"
        height="600"
        onload="setTimeout(nextTest,0);"
        title="bug 89419 test">

  <script type="application/javascript" src= "chrome://mochikit/content/chrome-harness.js" />
  <script type="text/javascript"
          src="chrome://mochikit/content/tests/SimpleTest/specialpowersAPI.js"/>
  <script type="text/javascript"
          src="chrome://mochikit/content/tests/SimpleTest/SpecialPowersObserverAPI.js"/>
  <script type="text/javascript"
          src="chrome://mochikit/content/tests/SimpleTest/specialpowers.js"/>
  <script type="application/javascript" src="docshell_helpers.js" />
  <script type="text/javascript" src="chrome://mochikit/content/tests/SimpleTest/WindowSnapshot.js"></script>

  <script type="application/javascript"><![CDATA[
    // Define the generator-iterator for the tests.
    var tests = testIterator();

    ////
    // Execute the next test in the generator function.
    //
    function nextTest() {
      tests.next();
    }

    ////
    // Generator function for test steps for bug 89419:
    // A visited link should have the :visited style applied
    // to it when displayed on a page which was fetched from
    // the bfcache.
    //
    function testIterator()
    {
      // Load a test page containing an image referring to the sjs that returns
      // a different redirect every time it's loaded.
      doPageNavigation({
        uri: getHttpUrl("89419.html"),
        onNavComplete: nextTest,
        preventBFCache: true
      });
      yield undefined;

      var first = snapshotWindow(TestWindow.getWindow());

      doPageNavigation({
        uri: "about:blank",
        onNavComplete: nextTest
      });
      yield undefined;

      var second = snapshotWindow(TestWindow.getWindow());
      function snapshotsEqual(snap1, snap2) {
        return compareSnapshots(snap1, snap2, true)[0];
      }
      ok(!snapshotsEqual(first, second), "about:blank should not be the same as the image web page");

      doPageNavigation({
        back: true,
        onNavComplete: nextTest
      });
      yield undefined;

      var third = snapshotWindow(TestWindow.getWindow());
      ok(!snapshotsEqual(third, second), "going back should not be the same as about:blank");
      ok(snapshotsEqual(first, third), "going back should be the same as the initial load");

      // Tell the framework the test is finished.  Include the final 'yield'
      // statement to prevent a StopIteration exception from being thrown.
      finish();
      yield undefined;
    }

  ]]></script>

  <browser type="content-primary" flex="1" id="content" src="about:blank"/>
</window>