gecko-dev/docshell/test/chrome/bug690056_window.xul

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

<window id="690056Test"
        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
        width="600"
        height="600"
        onload="setTimeout(nextTest,0);"
        title="bug 6500056 test">

  <script type="application/javascript" src= "chrome://mochikit/content/chrome-harness.js" />
  <script type="application/javascript" src="docshell_helpers.js" />
  <script type="application/javascript"><![CDATA[
    var tests = testIterator();

    function nextTest() {
      tests.next();
    }

    // Makes sure that we fire the visibilitychange events
    function testIterator() {
      // Enable bfcache
      enableBFCache(8);

      // Load something for a start
      doPageNavigation({
        uri: 'data:text/html,<title>initial load</title>',
        onNavComplete: nextTest
      });
      yield undefined;

      // Now load a new page
      doPageNavigation({
        uri: 'data:text/html,<title>new load</title>',
        eventsToListenFor: [ "pageshow", "pagehide", "visibilitychange" ],
        expectedEvents: [ { type: "pagehide",
                            title: "initial load",
                            persisted: true },
                          { type: "visibilitychange",
                            title: "initial load",
                            visibilityState: "hidden",
                            hidden: true },
                          // No visibilitychange events fired for initial pageload
                          { type: "pageshow",
                            title: "new load",
                            persisted: false }, // false on initial load
                        ],
        onNavComplete: nextTest
      });
      yield undefined;

      // Now go back
      doPageNavigation({
        back: true,
        eventsToListenFor: [ "pageshow", "pagehide", "visibilitychange" ],
        expectedEvents: [ { type: "pagehide",
                            title: "new load",
                            persisted: true },
                          { type: "visibilitychange",
                            title: "new load",
                            visibilityState: "hidden",
                            hidden: true },
                          { type: "visibilitychange",
                            title: "initial load",
                            visibilityState: "visible",
                            hidden: false },
                          { type: "pageshow",
                            title: "initial load",
                            persisted: true },
                        ],
        onNavComplete: nextTest
      });
      yield undefined;

      // And forward
      doPageNavigation({
        forward: true,
        eventsToListenFor: [ "pageshow", "pagehide", "visibilitychange" ],
        expectedEvents: [ { type: "pagehide",
                            title: "initial load",
                            persisted: true },
                          { type: "visibilitychange",
                            title: "initial load",
                            visibilityState: "hidden",
                            hidden: true },
                          { type: "visibilitychange",
                            title: "new load",
                            visibilityState: "visible",
                            hidden: false },
                          { type: "pageshow",
                            title: "new load",
                            persisted: true },
                        ],
        onNavComplete: nextTest
      });
      yield undefined;

      function generateDetector(state, hidden, title, name) {
        var detector = function (event) {
          is(event.target.hidden, hidden,
             name + " hidden value does not match");
          is(event.target.visibilityState, state,
             name + " state value does not match");
          is(event.target.title, title,
             name + " title value does not match");
          document.getElementById("content")
                  .removeEventListener("visibilitychange",
                                       detector,
                                       true);
          nextTest();
        }

        document.getElementById("content")
                .addEventListener("visibilitychange", detector, true);
      }
      
      generateDetector("hidden", true, "new load", "Going hidden");
        
      // Now flip our docshell to not active
      document.getElementById("content").docShellIsActive = false;
      yield undefined;

      // And navigate back; there should be no visibility state transitions
      doPageNavigation({
        back: true,
        eventsToListenFor: [ "pageshow", "pagehide", "visibilitychange" ],
        expectedEvents: [ { type: "pagehide",
                            title: "new load",
                            persisted: true },
                          { type: "pageshow",
                            title: "initial load",
                            persisted: true },
                        ],
        unexpectedEvents: [ "visibilitychange" ],
        onNavComplete: nextTest
      });
      yield undefined;

      generateDetector("visible", false, "initial load", "Going visible");

      // Now set the docshell active again
      document.getElementById("content").docShellIsActive = true;
      yield undefined;

      // And forward
      doPageNavigation({
        forward: true,
        eventsToListenFor: [ "pageshow", "pagehide", "visibilitychange" ],
        expectedEvents: [ { type: "pagehide",
                            title: "initial load",
                            persisted: true },
                          { type: "visibilitychange",
                            title: "initial load",
                            visibilityState: "hidden",
                            hidden: true },
                          { type: "visibilitychange",
                            title: "new load",
                            visibilityState: "visible",
                            hidden: false },
                          { type: "pageshow",
                            title: "new load",
                            persisted: true },
                        ],
        onNavComplete: nextTest
      });
      yield undefined;

      // 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>