1 files changed, 48 insertions, 0 deletions
diff --git a/browser/components/customizableui/test/browser_947914_button_newPrivateWindow.js b/browser/components/customizableui/test/browser_947914_button_newPrivateWindow.js
new file mode 100644
index 000000000..c2006bef0
--- /dev/null
+++ b/browser/components/customizableui/test/browser_947914_button_newPrivateWindow.js
@@ -0,0 +1,48 @@
+/* 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";
+
+add_task(function*() {
+  info("Check private browsing button existence and functionality");
+
+  yield PanelUI.show();
+  info("Menu panel was opened");
+
+  let windowWasHandled = false;
+  let privateWindow = null;
+
+  let observerWindowOpened = {
+    observe: function(aSubject, aTopic, aData) {
+      if (aTopic == "domwindowopened") {
+        privateWindow = aSubject.QueryInterface(Components.interfaces.nsIDOMWindow);
+        privateWindow.addEventListener("load", function newWindowHandler() {
+          privateWindow.removeEventListener("load", newWindowHandler, false);
+          is(privateWindow.location.href, "chrome://browser/content/browser.xul",
+             "A new browser window was opened");
+          ok(PrivateBrowsingUtils.isWindowPrivate(privateWindow), "Window is private");
+          windowWasHandled = true;
+        }, false);
+      }
+    }
+  }
+
+  Services.ww.registerNotification(observerWindowOpened);
+
+  let privateBrowsingButton = document.getElementById("privatebrowsing-button");
+  ok(privateBrowsingButton, "Private browsing button exists in Panel Menu");
+  privateBrowsingButton.click();
+
+  try {
+    yield waitForCondition(() => windowWasHandled);
+    yield promiseWindowClosed(privateWindow);
+    info("The new private window was closed");
+  }
+  catch (e) {
+    ok(false, "The new private browser window was not properly handled");
+  }
+  finally {
+    Services.ww.unregisterNotification(observerWindowOpened);
+  }
+});