diff -r 000000000000 -r 6474c204b198 browser/components/tabview/test/browser_tabview_privatebrowsing_perwindowpb.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/components/tabview/test/browser_tabview_privatebrowsing_perwindowpb.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,167 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+let normalURLs = [];
+let pbTabURL = "about:privatebrowsing";
+let groupTitles = [];
+let normalIteration = 0;
+
+function test() {
+  waitForExplicitFinish();
+
+  testOnWindow(false, function(win) {
+    showTabView(function() {
+      onTabViewLoadedAndShown(win);
+    }, win);
+  });
+}
+
+function testOnWindow(aIsPrivate, aCallback) {
+  let win = OpenBrowserWindow({private: aIsPrivate});
+  win.addEventListener("load", function onLoad() {
+    win.removeEventListener("load", onLoad, false);
+    executeSoon(function() { aCallback(win); });
+  }, false);
+}
+
+function onTabViewLoadedAndShown(aWindow) {
+  ok(aWindow.TabView.isVisible(), "Tab View is visible");
+
+  // Establish initial state
+  let contentWindow = aWindow.TabView.getContentWindow();
+  verifyCleanState(aWindow, "start", contentWindow);
+
+  // create a group
+  let box = new contentWindow.Rect(20, 20, 180, 180);
+  let groupItem = new contentWindow.GroupItem([], {bounds: box, title: "test1"});
+  let id = groupItem.id;
+  is(contentWindow.GroupItems.groupItems.length, 2, "we now have two groups");
+  registerCleanupFunction(function() {
+    contentWindow.GroupItems.groupItem(id).close();
+  });
+
+  // make it the active group so new tabs will be added to it
+  contentWindow.UI.setActive(groupItem);
+
+  // collect the group titles
+  let count = contentWindow.GroupItems.groupItems.length;
+  for (let a = 0; a < count; a++) {
+    let gi = contentWindow.GroupItems.groupItems[a];
+    groupTitles[a] = gi.getTitle();
+  }
+
+  contentWindow.gPrefBranch.setBoolPref("animate_zoom", false);
+
+  // Create a second tab
+  aWindow.gBrowser.addTab("about:mozilla");
+  is(aWindow.gBrowser.tabs.length, 2, "we now have 2 tabs");
+
+  registerCleanupFunction(function() {
+    aWindow.gBrowser.removeTab(aWindow.gBrowser.tabs[1]);
+    contentWindow.gPrefBranch.clearUserPref("animate_zoom");
+  });
+
+  afterAllTabsLoaded(function() {
+    // Get normal tab urls
+    for (let a = 0; a < aWindow.gBrowser.tabs.length; a++)
+      normalURLs.push(aWindow.gBrowser.tabs[a].linkedBrowser.currentURI.spec);
+
+    // verify that we're all set up for our test
+    verifyNormal(aWindow);
+
+    // Open private window and make sure Tab View becomes hidden
+    testOnWindow(true, function(privateWin) {
+      whenTabViewIsHidden(function() {
+        ok(!privateWin.TabView.isVisible(), "Tab View is no longer visible");
+        verifyPB(privateWin);
+        // Close private window
+        privateWin.close();
+        // Get back to normal window, make sure Tab View is shown again
+        whenTabViewIsShown(function() {
+          ok(aWindow.TabView.isVisible(), "Tab View is visible again");
+          verifyNormal(aWindow);
+
+          hideTabView(function() {
+            onTabViewHidden(aWindow, contentWindow);
+          }, aWindow);
+        }, aWindow);
+      }, privateWin);
+    });
+  }, aWindow);
+}
+
+function onTabViewHidden(aWindow, aContentWindow) {
+  ok(!aWindow.TabView.isVisible(), "Tab View is not visible");
+
+  // Open private window and make sure Tab View is hidden
+  testOnWindow(true, function(privateWin) {
+    ok(!privateWin.TabView.isVisible(), "Tab View is still not visible");
+    verifyPB(privateWin);
+    // Close private window
+    privateWin.close();
+
+    //  Get back to normal window
+    verifyNormal(aWindow);
+
+    // end game
+    ok(!aWindow.TabView.isVisible(), "we finish with Tab View not visible");
+
+    // verify after all cleanups
+    registerCleanupFunction(function() {
+      verifyCleanState(aWindow, "finish", aContentWindow);
+      aWindow.close();
+    });
+
+    finish();
+  });
+}
+
+function verifyCleanState(aWindow, aMode, aContentWindow) {
+  let prefix = "we " + aMode + " with ";
+  is(aWindow.gBrowser.tabs.length, 1, prefix + "one tab");
+  is(aContentWindow.GroupItems.groupItems.length, 1, prefix + "1 group");
+  ok(aWindow.gBrowser.tabs[0]._tabViewTabItem.parent == aContentWindow.GroupItems.groupItems[0],
+      "the tab is in the group");
+  ok(!PrivateBrowsingUtils.isWindowPrivate(aWindow), prefix + "private browsing off");
+}
+
+function verifyPB(aWindow) {
+  showTabView(function() {
+    let cw = aWindow.TabView.getContentWindow();
+    ok(PrivateBrowsingUtils.isWindowPrivate(aWindow), "window is private");
+    is(aWindow.gBrowser.tabs.length, 1, "we have 1 tab in private window");
+    is(cw.GroupItems.groupItems.length, 1, "we have 1 group in private window");
+    ok(aWindow.gBrowser.tabs[0]._tabViewTabItem.parent == cw.GroupItems.groupItems[0],
+        "the tab is in the group");
+    let browser = aWindow.gBrowser.tabs[0].linkedBrowser;
+    browser.addEventListener("load", function onLoad() {
+      browser.removeEventListener("load", onLoad, true);
+      is(browser.currentURI.spec, pbTabURL, "correct URL for private browsing");
+    }, true);
+  }, aWindow);
+}
+
+function verifyNormal(aWindow) {
+  let contentWindow = aWindow.TabView.getContentWindow();
+  let prefix = "verify normal " + normalIteration + ": ";
+  normalIteration++;
+
+  ok(!PrivateBrowsingUtils.isWindowPrivate(aWindow), prefix + "private browsing off");
+
+  let tabCount = aWindow.gBrowser.tabs.length;
+  let groupCount = contentWindow.GroupItems.groupItems.length;
+  is(tabCount, 2, prefix + "we have 2 tabs");
+  is(groupCount, 2, prefix + "we have 2 groups");
+  ok(tabCount == groupCount, prefix + "same number of tabs as groups");
+  for (let a = 0; a < tabCount; a++) {
+    let tab = aWindow.gBrowser.tabs[a];
+    is(tab.linkedBrowser.currentURI.spec, normalURLs[a],
+        prefix + "correct URL");
+
+    let groupItem = contentWindow.GroupItems.groupItems[a];
+    is(groupItem.getTitle(), groupTitles[a], prefix + "correct group title");
+
+    ok(tab._tabViewTabItem.parent == groupItem,
+        prefix + "tab " + a + " is in group " + a);
+  }
+}