diff -r 000000000000 -r 6474c204b198 browser/components/tabview/test/browser_tabview_multiwindow_search.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/components/tabview/test/browser_tabview_multiwindow_search.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,148 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+let newWindows = [];
+
+function test() {
+  waitForExplicitFinish();
+  let windowOne = openDialog(location, "", "chrome,all,dialog=no", "data:text/html,");
+  let windowTwo;
+
+  whenWindowLoaded(windowOne, function () {
+    windowOne.gBrowser.selectedBrowser.addEventListener("load", function onLoad() {
+      windowOne.gBrowser.selectedBrowser.removeEventListener("load", onLoad, true);
+
+      windowTwo = openDialog(location, "", "chrome,all,dialog=no", "http://mochi.test:8888/");
+      whenWindowLoaded(windowTwo, function () {
+        windowTwo.gBrowser.selectedBrowser.addEventListener("load", function onLoad() {
+          windowTwo.gBrowser.selectedBrowser.removeEventListener("load", onLoad, true);
+
+          newWindows = [ windowOne, windowTwo ];
+
+          // show the tab view
+          window.addEventListener("tabviewshown", onTabViewWindowLoaded, false);
+          ok(!TabView.isVisible(), "Tab View is hidden");
+          TabView.toggle();
+        }, true);
+      });
+    }, true);
+  });
+}
+
+function onTabViewWindowLoaded() {
+  window.removeEventListener("tabviewshown", onTabViewWindowLoaded, false);
+  ok(TabView.isVisible(), "Tab View is visible");
+
+  let contentWindow = document.getElementById("tab-view").contentWindow;
+  let search = contentWindow.document.getElementById("search");
+  let searchButton = contentWindow.document.getElementById("searchbutton");
+
+  ok(searchButton, "Search button exists");
+  
+  let onSearchEnabled = function() {
+    ok(search.style.display != "none", "Search is enabled");
+    contentWindow.removeEventListener(
+      "tabviewsearchenabled", onSearchEnabled, false);
+    searchTest(contentWindow);
+  }
+  contentWindow.addEventListener("tabviewsearchenabled", onSearchEnabled, false);
+  // enter search mode
+  EventUtils.sendMouseEvent({ type: "mousedown" }, searchButton, contentWindow);
+}
+
+// conveniently combine local and other window tab results from a query
+function getMatchResults(contentWindow, query) {
+  let matcher = new contentWindow.TabMatcher(query);
+  let localMatchResults = matcher.matched();
+  let otherMatchResults = matcher.matchedTabsFromOtherWindows();
+  return localMatchResults.concat(otherMatchResults);
+}
+
+function searchTest(contentWindow) {
+  let searchBox = contentWindow.document.getElementById("searchbox");
+  let matcher = null;
+  let matchResults = [];
+  
+  // get the titles of tabs.
+  let tabNames = [];
+
+  let tabItems = contentWindow.TabItems.getItems();
+  is(tabItems.length, 1, "Have only one tab in the current window's tab items"); 
+  tabItems.forEach(function(tab) {
+    tabNames.push(tab.$tabTitle[0].innerHTML);
+  });
+
+  newWindows.forEach(function(win) {
+      for(var i=0; i<win.gBrowser.tabs.length; ++i) {
+        tabNames.push(win.gBrowser.tabs[i].label);
+      }
+  });
+
+  ok(tabNames[0] && tabNames[0].length > 2, 
+     "The title of tab item is longer than 2 chars")
+
+  // empty string
+  searchBox.setAttribute("value", "");
+  matchResults = getMatchResults(contentWindow, searchBox.getAttribute("value"));
+  ok(matchResults.length == 0, "Match nothing if it's an empty string");
+
+  // one char
+  searchBox.setAttribute("value", tabNames[0].charAt(0));
+  matchResults = getMatchResults(contentWindow, searchBox.getAttribute("value"));
+  ok(matchResults.length == 0,
+     "Match nothing if the length of search term is less than 2");
+
+  // the full title
+  searchBox.setAttribute("value", tabNames[2]);
+  matchResults = getMatchResults(contentWindow, searchBox.getAttribute("value"));
+  is(matchResults.length, 1,
+    "Match something when the whole title exists");
+
+  // part of titled
+  searchBox.setAttribute("value", tabNames[0].substr(1));
+  contentWindow.Search.perform();
+  matchResults = getMatchResults(contentWindow, searchBox.getAttribute("value"));
+  is(matchResults.length, 1,
+     "Match something when a part of title exists");
+
+  cleanup(contentWindow);
+}
+
+function cleanup(contentWindow) {
+  contentWindow.Search.hide(null);
+
+  let onTabViewHidden = function() {
+      window.removeEventListener("tabviewhidden", onTabViewHidden, false);
+      ok(!TabView.isVisible(), "Tab View is hidden");
+      let numToClose = newWindows.length;
+      newWindows.forEach(function(win) {
+        whenWindowObservesOnce(win, "domwindowclosed", function() {
+          --numToClose;
+          if(numToClose==0) {
+            finish();
+          }
+        });
+        win.close();
+      });
+  }
+  window.addEventListener("tabviewhidden", onTabViewHidden, false);
+  EventUtils.synthesizeKey("VK_RETURN", {});
+}
+
+function whenWindowObservesOnce(win, topic, func) {
+    let windowWatcher = Components.classes["@mozilla.org/embedcomp/window-watcher;1"]
+      .getService(Components.interfaces.nsIWindowWatcher);
+    let origWin = win;
+    let origTopic = topic;
+    let origFunc = func;        
+    function windowObserver(aSubject, aTopic, aData) {
+      let theWin = aSubject.QueryInterface(Ci.nsIDOMWindow);
+      if (origWin && theWin != origWin)
+        return;
+      if(aTopic == origTopic) {
+          windowWatcher.unregisterNotification(windowObserver);
+          origFunc.apply(this, []);
+      }
+    }
+    windowWatcher.registerNotification(windowObserver);
+}