1 files changed, 99 insertions, 0 deletions
diff --git a/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_ui.js b/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_ui.js
new file mode 100644
index 0000000000..f51d43951a
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+++ b/browser/components/privatebrowsing/test/browser/browser_privatebrowsing_ui.js
@@ -0,0 +1,99 @@
+/* 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/. */
+
+// This test makes sure that the gPrivateBrowsingUI object, the Private Browsing
+// menu item and its XUL <command> element work correctly.
+
+function test() {
+  // initialization
+  waitForExplicitFinish();
+  SpecialPowers.pushPrefEnv({
+    set: [["security.allow_eval_with_system_principal", true]],
+  });
+  let windowsToClose = [];
+  let testURI = "about:blank";
+  let pbMenuItem;
+  let cmd;
+
+  function doTest(aIsPrivateMode, aWindow, aCallback) {
+    BrowserTestUtils.browserLoaded(aWindow.gBrowser.selectedBrowser).then(
+      function () {
+        ok(aWindow.gPrivateBrowsingUI, "The gPrivateBrowsingUI object exists");
+
+        pbMenuItem = aWindow.document.getElementById("menu_newPrivateWindow");
+        ok(pbMenuItem, "The Private Browsing menu item exists");
+
+        cmd = aWindow.document.getElementById("Tools:PrivateBrowsing");
+        isnot(
+          cmd,
+          null,
+          "XUL command object for the private browsing service exists"
+        );
+
+        is(
+          pbMenuItem.getAttribute("label"),
+          "New Private Window",
+          'The Private Browsing menu item should read "New Private Window"'
+        );
+        is(
+          PrivateBrowsingUtils.isWindowPrivate(aWindow),
+          aIsPrivateMode,
+          "PrivateBrowsingUtils should report the correct per-window private browsing status (privateBrowsing should be " +
+            aIsPrivateMode +
+            ")"
+        );
+
+        aCallback();
+      }
+    );
+
+    BrowserTestUtils.loadURIString(aWindow.gBrowser.selectedBrowser, testURI);
+  }
+
+  function openPrivateBrowsingModeByUI(aWindow, aCallback) {
+    Services.obs.addObserver(function observer(aSubject, aTopic, aData) {
+      aSubject.addEventListener(
+        "load",
+        function () {
+          Services.obs.removeObserver(observer, "domwindowopened");
+          windowsToClose.push(aSubject);
+          aCallback(aSubject);
+        },
+        { once: true }
+      );
+    }, "domwindowopened");
+
+    cmd = aWindow.document.getElementById("Tools:PrivateBrowsing");
+    var func = new Function("", cmd.getAttribute("oncommand"));
+    func.call(cmd);
+  }
+
+  function testOnWindow(aOptions, aCallback) {
+    whenNewWindowLoaded(aOptions, function (aWin) {
+      windowsToClose.push(aWin);
+      // execute should only be called when need, like when you are opening
+      // web pages on the test. If calling executeSoon() is not necesary, then
+      // call whenNewWindowLoaded() instead of testOnWindow() on your test.
+      executeSoon(() => aCallback(aWin));
+    });
+  }
+
+  // this function is called after calling finish() on the test.
+  registerCleanupFunction(function () {
+    windowsToClose.forEach(function (aWin) {
+      aWin.close();
+    });
+  });
+
+  // test first when not on private mode
+  testOnWindow({}, function (aWin) {
+    doTest(false, aWin, function () {
+      // then test when on private mode, opening a new private window from the
+      // user interface.
+      openPrivateBrowsingModeByUI(aWin, function (aPrivateWin) {
+        doTest(true, aPrivateWin, finish);
+      });
+    });
+  });
+}