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diff --git a/tools/addon-sdk-1.7/packages/addon-kit/tests/test-tabs.js b/tools/addon-sdk-1.7/packages/addon-kit/tests/test-tabs.js
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+var {Cc,Ci} = require("chrome");
+const { Loader } = require("./helpers");
+
+// test tab.activeTab getter
+exports.testActiveTab_getter = function(test) {
+  test.waitUntilDone();
+
+  openBrowserWindow(function(window, browser) {
+    let tabs = require("tabs");
+
+    let url = "data:text/html,<html><head><title>foo</title></head></html>";
+    require("tab-browser").addTab(
+      url,
+      {
+        onLoad: function(e) {
+          test.assert(tabs.activeTab);
+          test.assertEqual(tabs.activeTab.url, url);
+          test.assertEqual(tabs.activeTab.title, "foo");
+          closeBrowserWindow(window, function() test.done());
+        }
+      }
+    );
+  });
+};
+
+// test 'BrowserWindow' instance creation on tab 'activate' event
+// See bug 648244: there was a infinite loop.
+exports.testBrowserWindowCreationOnActivate = function(test) {
+  test.waitUntilDone();
+  
+  let windows = require("windows").browserWindows;
+  let tabs = require("tabs");
+  
+  let gotActivate = false;
+  
+  tabs.once('activate', function onActivate(eventTab) {
+    test.assert(windows.activeWindow, "Is able to fetch activeWindow");
+    gotActivate = true;
+  });
+  
+  openBrowserWindow(function(window, browser) {
+    test.assert(gotActivate, "Received activate event before openBrowserWindow's callback is called");
+    closeBrowserWindow(window, function () test.done());
+  });
+}
+
+// test tab.activeTab setter
+exports.testActiveTab_setter = function(test) {
+  test.waitUntilDone();
+
+  openBrowserWindow(function(window, browser) {
+    let tabs = require("tabs");
+    let url = "data:text/html,<html><head><title>foo</title></head></html>";
+
+    tabs.on('ready', function onReady(tab) {
+      tabs.removeListener('ready', onReady);
+      test.assertEqual(tabs.activeTab.url, "about:blank", "activeTab url has not changed");
+      test.assertEqual(tab.url, url, "url of new background tab matches");
+      tabs.on('activate', function onActivate(eventTab) {
+        tabs.removeListener('activate', onActivate);
+        test.assertEqual(tabs.activeTab.url, url, "url after activeTab setter matches");
+        test.assertEqual(eventTab, tab, "event argument is the activated tab");
+        test.assertEqual(eventTab, tabs.activeTab, "the tab is the active one");
+        closeBrowserWindow(window, function() test.done());
+      });
+      tab.activate();
+    })
+
+    tabs.open({
+      url: url,
+      inBackground: true
+    });
+  });
+};
+
+exports.testAutomaticDestroy = function(test) {
+  test.waitUntilDone();
+
+  openBrowserWindow(function(window, browser) {
+    let tabs = require("tabs");
+    
+    // Create a second tab instance that we will destroy
+    let called = false;
+    
+    let loader = Loader(module);
+    let tabs2 = loader.require("tabs");
+    tabs2.on('open', function onOpen(tab) {
+      called = true;
+    });
+    
+    loader.unload();
+    
+    // Fire a tab event an ensure that this destroyed tab is inactive
+    tabs.once('open', function () {
+      require("timer").setTimeout(function () {
+        test.assert(!called, "Unloaded tab module is destroyed and inactive");
+        closeBrowserWindow(window, function() test.done());
+      }, 0);
+    });
+    
+    tabs.open("data:text/html,foo");
+    
+  });
+};
+
+// test tab properties
+exports.testTabProperties = function(test) {
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    let tabs= require("tabs");
+    let url = "data:text/html,<html><head><title>foo</title></head><body>foo</body></html>";
+    tabs.open({
+      url: url,
+      onReady: function(tab) {
+        test.assertEqual(tab.title, "foo", "title of the new tab matches");
+        test.assertEqual(tab.url, url, "URL of the new tab matches");
+        test.assert(tab.favicon, "favicon of the new tab is not empty");
+        test.assertEqual(tab.style, null, "style of the new tab matches");
+        test.assertEqual(tab.index, 1, "index of the new tab matches");
+        test.assertNotEqual(tab.getThumbnail(), null, "thumbnail of the new tab matches");
+        closeBrowserWindow(window, function() test.done());
+      }
+    });
+  });
+};
+
+// test tabs iterator and length property
+exports.testTabsIteratorAndLength = function(test) {
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    let tabs = require("tabs");
+    let startCount = 0;
+    for each (let t in tabs) startCount++;
+    test.assertEqual(startCount, tabs.length, "length property is correct");
+    let url = "data:text/html,default";
+    tabs.open(url);
+    tabs.open(url);
+    tabs.open({
+      url: url,
+      onOpen: function(tab) {
+        let count = 0;
+        for each (let t in tabs) count++;
+        test.assertEqual(count, startCount + 3, "iterated tab count matches");
+        test.assertEqual(startCount + 3, tabs.length, "iterated tab count matches length property");
+        closeBrowserWindow(window, function() test.done());
+      }
+    });
+  });
+};
+
+// test tab.url setter
+exports.testTabLocation = function(test) {
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    let tabs = require("tabs");
+    let url1 = "data:text/html,foo";
+    let url2 = "data:text/html,bar";
+
+    tabs.on('ready', function onReady(tab) {
+      if (tab.url != url2)
+        return;
+      tabs.removeListener('ready', onReady);
+      test.pass("tab.load() loaded the correct url");
+      closeBrowserWindow(window, function() test.done());
+    });
+
+    tabs.open({
+      url: url1,
+      onOpen: function(tab) {
+        tab.url = url2
+      }
+    });
+  });
+};
+
+// test tab.close()
+exports.testTabClose = function(test) {
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    let tabs = require("tabs");
+    let url = "data:text/html,foo";
+
+    test.assertNotEqual(tabs.activeTab.url, url, "tab is now the active tab");
+    tabs.on('ready', function onReady(tab) {
+      tabs.removeListener('ready', onReady);
+      test.assertEqual(tabs.activeTab.url, tab.url, "tab is now the active tab");
+      tab.close(function() {
+        closeBrowserWindow(window, function() test.done());
+      });
+      test.assertNotEqual(tabs.activeTab.url, url, "tab is no longer the active tab");
+    });
+
+    tabs.open(url);
+  });
+};
+
+// test tab.reload()
+exports.testTabReload = function(test) {
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    let tabs = require("tabs");
+    let url = "data:text/html,<!doctype%20html><title></title>";
+
+    tabs.open({ url: url, onReady: function onReady(tab) {
+      tab.removeListener("ready", onReady);
+
+      browser.addEventListener(
+        "load",
+        function onLoad() {
+          browser.removeEventListener("load", onLoad, true);
+
+          browser.addEventListener(
+            "load",
+            function onReload() {
+              browser.removeEventListener("load", onReload, true);
+              test.pass("the tab was loaded again");
+              test.assertEqual(tab.url, url, "the tab has the same URL");
+              closeBrowserWindow(window, function() test.done());
+            },
+            true
+          );
+          tab.reload();
+        },
+        true
+      );
+    }});
+  });
+};
+
+// test tab.move()
+exports.testTabMove = function(test) {
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    let tabs = require("tabs");
+    let url = "data:text/html,foo";
+
+    tabs.open({
+      url: url,
+      onOpen: function(tab) {
+        test.assertEqual(tab.index, 1, "tab index before move matches");
+        tab.index = 0;
+        test.assertEqual(tab.index, 0, "tab index after move matches");
+        closeBrowserWindow(window, function() test.done());
+      }
+    });
+  });
+};
+
+// open tab with default options
+exports.testOpen = function(test) {
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    let tabs = require("tabs");
+    let url = "data:text/html,default";
+    tabs.open({
+      url: url,
+      onReady: function(tab) {
+        test.assertEqual(tab.url, url, "URL of the new tab matches");
+        test.assertEqual(window.content.location, url, "URL of active tab in the current window matches");
+        closeBrowserWindow(window, function() test.done());
+      }
+    });
+  });
+};
+
+// open pinned tab
+exports.testOpenPinned = function(test) {
+  const xulApp = require("xul-app");
+  if (xulApp.versionInRange(xulApp.platformVersion, "2.0b2", "*")) {
+    // test tab pinning
+    test.waitUntilDone();
+    openBrowserWindow(function(window, browser) {
+      let tabs = require("tabs");
+      let url = "data:text/html,default";
+      tabs.open({
+        url: url,
+        isPinned: true,
+        onOpen: function(tab) {
+          test.assertEqual(tab.isPinned, true, "The new tab is pinned");
+          closeBrowserWindow(window, function() test.done());
+        }
+      });
+    });
+  }
+  else {
+    test.pass("Pinned tabs are not supported in this application.");
+  }
+};
+
+// pin/unpin opened tab
+exports.testPinUnpin = function(test) {
+  const xulApp = require("xul-app");
+  if (xulApp.versionInRange(xulApp.platformVersion, "2.0b2", "*")) {
+    test.waitUntilDone();
+    openBrowserWindow(function(window, browser) {
+      let tabs = require("tabs");
+      let url = "data:text/html,default";
+      tabs.open({
+        url: url,
+        onOpen: function(tab) {
+          tab.pin();
+          test.assertEqual(tab.isPinned, true, "The tab was pinned correctly");
+          tab.unpin();
+          test.assertEqual(tab.isPinned, false, "The tab was unpinned correctly");
+          closeBrowserWindow(window, function() test.done());
+        }
+      });
+    });
+  }
+  else {
+    test.pass("Pinned tabs are not supported in this application.");
+  }
+};
+
+// open tab in background
+exports.testInBackground = function(test) {
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    let tabs = require("tabs");
+    let activeUrl = tabs.activeTab.url;
+    let url = "data:text/html,background";
+    test.assertEqual(activeWindow, window, "activeWindow matches this window");
+    tabs.on('ready', function onReady(tab) {
+      tabs.removeListener('ready', onReady);
+      test.assertEqual(tabs.activeTab.url, activeUrl, "URL of active tab has not changed");
+      test.assertEqual(tab.url, url, "URL of the new background tab matches");
+      test.assertEqual(activeWindow, window, "a new window was not opened");
+      test.assertNotEqual(tabs.activeTab.url, url, "URL of active tab is not the new URL");
+      closeBrowserWindow(window, function() test.done());
+    });
+    tabs.open({
+      url: url,
+      inBackground: true
+    });
+  });
+};
+
+// open tab in new window
+exports.testOpenInNewWindow = function(test) {
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    let tabs = require("tabs");
+
+    let cache = [];
+    let windowUtils = require("window-utils");
+    let wt = new windowUtils.WindowTracker({
+      onTrack: function(win) {
+        cache.push(win);
+      },
+      onUntrack: function(win) {
+        cache.splice(cache.indexOf(win), 1)
+      }
+    });
+    let startWindowCount = cache.length;
+
+    let url = "data:text/html,newwindow";
+    tabs.open({
+      url: url,
+      inNewWindow: true,
+      onReady: function(tab) {
+        let newWindow = cache[cache.length - 1];
+        test.assertEqual(cache.length, startWindowCount + 1, "a new window was opened");
+        test.assertEqual(activeWindow, newWindow, "new window is active");
+        test.assertEqual(tab.url, url, "URL of the new tab matches");
+        test.assertEqual(newWindow.content.location, url, "URL of new tab in new window matches");
+        test.assertEqual(tabs.activeTab.url, url, "URL of activeTab matches");
+        for (var i in cache) cache[i] = null;
+        wt.unload();
+        closeBrowserWindow(newWindow, function() {
+          closeBrowserWindow(window, function() test.done());
+        });
+      }
+    });
+  });
+};
+
+// onOpen event handler
+exports.testTabsEvent_onOpen = function(test) {
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    var tabs = require("tabs");
+    let url = "data:text/html,1";
+    let eventCount = 0;
+
+    // add listener via property assignment
+    function listener1(tab) {
+      eventCount++;
+    };
+    tabs.on('open', listener1);
+
+    // add listener via collection add
+    tabs.on('open', function listener2(tab) {
+      test.assertEqual(++eventCount, 2, "both listeners notified");
+      tabs.removeListener('open', listener1);
+      tabs.removeListener('open', listener2);
+      closeBrowserWindow(window, function() test.done());
+    });
+
+    tabs.open(url);
+  });
+};
+
+// onClose event handler
+exports.testTabsEvent_onClose = function(test) {
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    var tabs = require("tabs");
+    let url = "data:text/html,onclose";
+    let eventCount = 0;
+
+    // add listener via property assignment
+    function listener1(tab) {
+      eventCount++;
+    }
+    tabs.on('close', listener1);
+
+    // add listener via collection add
+    tabs.on('close', function listener2(tab) {
+      test.assertEqual(++eventCount, 2, "both listeners notified");
+      tabs.removeListener('close', listener1);
+      tabs.removeListener('close', listener2);
+      closeBrowserWindow(window, function() test.done());
+    });
+
+    tabs.on('ready', function onReady(tab) {
+      tabs.removeListener('ready', onReady);
+      tab.close();
+    });
+
+    tabs.open(url);
+  });
+};
+
+// onClose event handler when a window is closed
+exports.testTabsEvent_onCloseWindow = function(test) {
+  test.waitUntilDone();
+
+  openBrowserWindow(function(window, browser) {
+    var tabs = require("tabs");
+
+    let closeCount = 0, individualCloseCount = 0;
+    function listener() {
+      closeCount++;
+    }
+    tabs.on('close', listener);
+
+    // One tab is already open with the window
+    let openTabs = 1;
+    function testCasePossiblyLoaded() {
+      if (++openTabs == 4) {
+        beginCloseWindow();
+      }
+    }
+
+    tabs.open({
+      url: "data:text/html,tab2",
+      onOpen: function() testCasePossiblyLoaded(),
+      onClose: function() individualCloseCount++
+    });
+
+    tabs.open({
+      url: "data:text/html,tab3",
+      onOpen: function() testCasePossiblyLoaded(),
+      onClose: function() individualCloseCount++
+    });
+
+    tabs.open({
+      url: "data:text/html,tab4",
+      onOpen: function() testCasePossiblyLoaded(),
+      onClose: function() individualCloseCount++
+    });
+
+    function beginCloseWindow() {
+      closeBrowserWindow(window, function testFinished() {
+        tabs.removeListener("close", listener);
+
+        test.assertEqual(closeCount, 4, "Correct number of close events received");
+        test.assertEqual(individualCloseCount, 3,
+                         "Each tab with an attached onClose listener received a close " +
+                         "event when the window was closed");
+
+        test.done();
+      });
+    }
+
+  });
+}
+
+// onReady event handler
+exports.testTabsEvent_onReady = function(test) {
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    var tabs = require("tabs");
+    let url = "data:text/html,onready";
+    let eventCount = 0;
+
+    // add listener via property assignment
+    function listener1(tab) {
+      eventCount++;
+    };
+    tabs.on('ready', listener1);
+
+    // add listener via collection add
+    tabs.on('ready', function listener2(tab) {
+      test.assertEqual(++eventCount, 2, "both listeners notified");
+      tabs.removeListener('ready', listener1);
+      tabs.removeListener('ready', listener2);
+      closeBrowserWindow(window, function() test.done());
+    });
+
+    tabs.open(url);
+  });
+};
+
+// onActivate event handler
+exports.testTabsEvent_onActivate = function(test) {
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    var tabs = require("tabs");
+    let url = "data:text/html,onactivate";
+    let eventCount = 0;
+
+    // add listener via property assignment
+    function listener1(tab) {
+      eventCount++;
+    };
+    tabs.on('activate', listener1);
+
+    // add listener via collection add
+    tabs.on('activate', function listener2(tab) {
+      test.assertEqual(++eventCount, 2, "both listeners notified");
+      tabs.removeListener('activate', listener1);
+      tabs.removeListener('activate', listener2);
+      closeBrowserWindow(window, function() test.done());
+    });
+
+    tabs.open(url);
+  });
+};
+
+// onDeactivate event handler
+exports.testTabsEvent_onDeactivate = function(test) {
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    var tabs = require("tabs");
+    let url = "data:text/html,ondeactivate";
+    let eventCount = 0;
+
+    // add listener via property assignment
+    function listener1(tab) {
+      eventCount++;
+    };
+    tabs.on('deactivate', listener1);
+
+    // add listener via collection add
+    tabs.on('deactivate', function listener2(tab) {
+      test.assertEqual(++eventCount, 2, "both listeners notified");
+      tabs.removeListener('deactivate', listener1);
+      tabs.removeListener('deactivate', listener2);
+      closeBrowserWindow(window, function() test.done());
+    });
+
+    tabs.on('open', function onOpen(tab) {
+      tabs.removeListener('open', onOpen);
+      tabs.open("data:text/html,foo");
+    });
+
+    tabs.open(url);
+  });
+};
+
+exports.testTabsEvent_pinning = function(test) {
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    var tabs = require("tabs");
+    let url = "data:text/html,1";
+
+    tabs.on('open', function onOpen(tab) {
+      tabs.removeListener('open', onOpen);
+      tab.pin();
+    });
+
+    tabs.on('pinned', function onPinned(tab) {
+      tabs.removeListener('pinned', onPinned);
+      test.assert(tab.isPinned, "notified tab is pinned");
+      tab.unpin();
+    });
+
+    tabs.on('unpinned', function onUnpinned(tab) {
+      tabs.removeListener('unpinned', onUnpinned);
+      test.assert(!tab.isPinned, "notified tab is not pinned");
+      closeBrowserWindow(window, function() test.done());
+    });
+
+    tabs.open(url);
+  });
+};
+
+// per-tab event handlers
+exports.testPerTabEvents = function(test) {
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    var tabs = require("tabs");
+    let eventCount = 0;
+
+    tabs.open({
+      url: "data:text/html,foo",
+      onOpen: function(tab) {
+        // add listener via property assignment
+        function listener1() {
+          eventCount++;
+        };
+        tab.on('ready', listener1);
+
+        // add listener via collection add
+        tab.on('ready', function listener2() {
+          test.assertEqual(eventCount, 1, "both listeners notified");
+          tab.removeListener('ready', listener1);
+          tab.removeListener('ready', listener2);
+          closeBrowserWindow(window, function() test.done());
+        });
+      }
+    });
+  });
+};
+
+exports.testAttachOnOpen = function (test) {
+  // Take care that attach has to be called on tab ready and not on tab open.
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    let tabs = require("tabs");
+    
+    tabs.open({
+      url: "data:text/html,foobar",
+      onOpen: function (tab) {
+        let worker = tab.attach({
+          contentScript: 'self.postMessage(document.location.href); ',
+          onMessage: function (msg) {
+            test.assertEqual(msg, "about:blank", 
+              "Worker document url is about:blank on open");
+            worker.destroy();
+            closeBrowserWindow(window, function() test.done());
+          }
+        });
+      }
+    });
+    
+  });
+}
+
+exports.testAttachOnMultipleDocuments = function (test) {
+  // Example of attach that process multiple tab documents
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    let tabs = require("tabs");
+    let firstLocation = "data:text/html,foobar";
+    let secondLocation = "data:text/html,bar";
+    let thirdLocation = "data:text/html,fox";
+    let onReadyCount = 0;
+    let worker1 = null;
+    let worker2 = null;
+    let detachEventCount = 0;
+    tabs.open({
+      url: firstLocation,
+      onReady: function (tab) {
+        onReadyCount++;
+        if (onReadyCount == 1) {
+          worker1 = tab.attach({
+            contentScript: 'self.on("message", ' +
+                           '  function () self.postMessage(document.location.href)' +
+                           ');',
+            onMessage: function (msg) {
+              test.assertEqual(msg, firstLocation, 
+                               "Worker url is equal to the 1st document");
+              tab.url = secondLocation;
+            },
+            onDetach: function () {
+              detachEventCount++;
+              test.pass("Got worker1 detach event");
+              test.assertRaises(function () {
+                  worker1.postMessage("ex-1");
+                }, 
+                /The page has been destroyed/, 
+                "postMessage throw because worker1 is destroyed");
+              checkEnd();
+            }
+          });
+          worker1.postMessage("new-doc-1");
+        } 
+        else if (onReadyCount == 2) {
+          
+          worker2 = tab.attach({
+            contentScript: 'self.on("message", ' +
+                           '  function () self.postMessage(document.location.href)' +
+                           ');',
+            onMessage: function (msg) {
+              test.assertEqual(msg, secondLocation, 
+                               "Worker url is equal to the 2nd document");
+              tab.url = thirdLocation;
+            },
+            onDetach: function () {
+              detachEventCount++;
+              test.pass("Got worker2 detach event");
+              test.assertRaises(function () {
+                  worker2.postMessage("ex-2");
+                }, 
+                /The page has been destroyed/, 
+                "postMessage throw because worker2 is destroyed");
+              checkEnd();
+            }
+          });
+          worker2.postMessage("new-doc-2");
+        } 
+        else if (onReadyCount == 3) {
+          
+          tab.close();
+          
+        }
+        
+      }
+    });
+    
+    function checkEnd() {
+      if (detachEventCount != 2)
+        return;
+      
+      test.pass("Got all detach events");
+      
+      closeBrowserWindow(window, function() test.done());
+    }
+    
+  });
+}
+
+
+exports.testAttachWrappers = function (test) {
+  // Check that content script has access to wrapped values by default
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    let tabs = require("tabs");
+    let document = "data:text/html,<script>var globalJSVar = true; " +
+                   "                       document.getElementById = 3;</script>";
+    let count = 0;
+    
+    tabs.open({
+      url: document,
+      onReady: function (tab) {
+        let worker = tab.attach({
+          contentScript: 'try {' +
+                         '  self.postMessage(!("globalJSVar" in window));' +
+                         '  self.postMessage(typeof window.globalJSVar == "undefined");' +
+                         '} catch(e) {' +
+                         '  self.postMessage(e.message);' +
+                         '}',
+          onMessage: function (msg) {
+            test.assertEqual(msg, true, "Worker has wrapped objects ("+count+")");
+            if (count++ == 1)
+              closeBrowserWindow(window, function() test.done());
+          }
+        });
+      }
+    });
+    
+  });
+}
+
+/*
+// We do not offer unwrapped access to DOM since bug 601295 landed
+// See 660780 to track progress of unwrap feature
+exports.testAttachUnwrapped = function (test) {
+  // Check that content script has access to unwrapped values through unsafeWindow
+  test.waitUntilDone();
+  openBrowserWindow(function(window, browser) {
+    let tabs = require("tabs");
+    let document = "data:text/html,<script>var globalJSVar=true;</script>";
+    let count = 0;
+    
+    tabs.open({
+      url: document,
+      onReady: function (tab) {
+        let worker = tab.attach({
+          contentScript: 'try {' +
+                         '  self.postMessage(unsafeWindow.globalJSVar);' +
+                         '} catch(e) {' +
+                         '  self.postMessage(e.message);' +
+                         '}',
+          onMessage: function (msg) {
+            test.assertEqual(msg, true, "Worker has access to javascript content globals ("+count+")");
+            closeBrowserWindow(window, function() test.done());
+          }
+        });
+      }
+    });
+    
+  });
+}
+*/
+
+exports['test window focus changes active tab'] = function(test) {
+  test.waitUntilDone();
+  let win1 = openBrowserWindow(function() {
+    let win2 = openBrowserWindow(function() {
+      let tabs = require("tabs");
+      tabs.on("activate", function onActivate() {
+        tabs.removeListener("activate", onActivate);
+        test.pass("activate was called on windows focus change.");
+        closeBrowserWindow(win1, function() {
+          closeBrowserWindow(win2, function() { test.done(); });
+        });
+      });
+      win1.focus();
+    }, "data:text/html,test window focus changes active tab</br><h1>Window #2");
+  }, "data:text/html,test window focus changes active tab</br><h1>Window #1");
+};
+
+exports['test ready event on new window tab'] = function(test) {
+  test.waitUntilDone();
+  let uri = encodeURI("data:text/html,Waiting for ready event!");
+
+  require("tabs").on("ready", function onReady(tab) {
+    if (tab.url === uri) {
+      require("tabs").removeListener("ready", onReady);
+      test.pass("ready event was emitted");
+      closeBrowserWindow(window, function() {
+        test.done();
+      });
+    }
+  });
+
+  let window = openBrowserWindow(function(){}, uri);
+};
+/******************* helpers *********************/
+
+// Helper for getting the active window
+this.__defineGetter__("activeWindow", function activeWindow() {
+  return Cc["@mozilla.org/appshell/window-mediator;1"].
+         getService(Ci.nsIWindowMediator).
+         getMostRecentWindow("navigator:browser");
+});
+
+// Utility function to open a new browser window.
+function openBrowserWindow(callback, url) {
+  let ww = Cc["@mozilla.org/embedcomp/window-watcher;1"].
+           getService(Ci.nsIWindowWatcher);
+  let urlString = Cc["@mozilla.org/supports-string;1"].
+                  createInstance(Ci.nsISupportsString);
+  urlString.data = url;
+  let window = ww.openWindow(null, "chrome://browser/content/browser.xul",
+                             "_blank", "chrome,all,dialog=no", urlString);
+  
+  if (callback) {
+    window.addEventListener("load", function onLoad(event) {
+      if (event.target && event.target.defaultView == window) {
+        window.removeEventListener("load", onLoad, true);
+        let browsers = window.document.getElementsByTagName("tabbrowser");
+        try {
+          require("timer").setTimeout(function () {
+            callback(window, browsers[0]);
+          }, 10);
+        } catch (e) { console.exception(e); }
+      }
+    }, true);
+  }
+
+  return window;
+}
+
+// Helper for calling code at window close
+function closeBrowserWindow(window, callback) {
+  window.addEventListener("unload", function unload() {
+    window.removeEventListener("unload", unload, false);
+    callback();
+  }, false);
+  window.close();
+}
+
+// If the module doesn't support the app we're being run in, require() will
+// throw.  In that case, remove all tests above from exports, and add one dummy
+// test that passes.
+try {
+  require("tabs");
+}
+catch (err) {
+  // This bug should be mentioned in the error message.
+  let bug = "https://bugzilla.mozilla.org/show_bug.cgi?id=560716";
+  if (err.message.indexOf(bug) < 0)
+    throw err;
+  for (let [prop, val] in Iterator(exports)) {
+    if (/^test/.test(prop) && typeof(val) === "function")
+      delete exports[prop];
+  }
+  exports.testAppNotSupported = function (test) {
+    test.pass("the tabs module does not support this application.");
+  };
+}