Add "Keep chrome running in background" preference.

chrome/browser/background_mode_manager_unittest.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/background_mode_manager.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/test/testing_browser_process.h"
 #include "chrome/test/testing_browser_process_test.h"
 #include "chrome/test/testing_profile.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+using testing::AtLeast;
 using testing::InSequence;
+using testing::Return;
 
 class BackgroundModeManagerTest : public TestingBrowserProcessTest {
  public:
   BackgroundModeManagerTest() {}
   ~BackgroundModeManagerTest() {}
   void SetUp() {
     command_line_.reset(new CommandLine(CommandLine::NO_PROGRAM));
   }
   scoped_ptr<CommandLine> command_line_;
 };
 
 class TestBackgroundModeManager : public BackgroundModeManager {
  public:
   TestBackgroundModeManager(Profile* profile, CommandLine* cl)
-      : BackgroundModeManager(profile, cl) {
-  }
+      : BackgroundModeManager(profile, cl),
+        enabled_(true) {}
   MOCK_METHOD1(EnableLaunchOnStartup, void(bool));
   MOCK_METHOD0(CreateStatusTrayIcon, void());
   MOCK_METHOD0(RemoveStatusTrayIcon, void());
+  virtual bool IsBackgroundModePrefEnabled() { return enabled_; }
+  void SetEnabled(bool enabled) { enabled_ = enabled; }
+ private:
+  bool enabled_;
 };
 
 TEST_F(BackgroundModeManagerTest, BackgroundAppLoadUnload) {
   InSequence s;
   TestingProfile profile;
   TestBackgroundModeManager manager(&profile, command_line_.get());
   EXPECT_CALL(manager, CreateStatusTrayIcon());
   EXPECT_CALL(manager, RemoveStatusTrayIcon());
   EXPECT_FALSE(BrowserList::WillKeepAlive());
   // Call to AppLoaded() will cause the status tray to be created, then call to
@@ skipping 12 matching lines @@
   // and call to AppUninstalled() set chrome to not launch on startup.
   EXPECT_CALL(manager, EnableLaunchOnStartup(true));
   EXPECT_CALL(manager, CreateStatusTrayIcon());
   EXPECT_CALL(manager, RemoveStatusTrayIcon());
   EXPECT_CALL(manager, EnableLaunchOnStartup(false));
   manager.OnBackgroundAppInstalled(NULL);
   manager.OnBackgroundAppLoaded();
   manager.OnBackgroundAppUnloaded();
   manager.OnBackgroundAppUninstalled();
 }
+
+// App installs while disabled should do nothing.
+TEST_F(BackgroundModeManagerTest, BackgroundAppInstallUninstallWhileDisabled) {
+  InSequence s;
+  TestingProfile profile;
+  TestBackgroundModeManager manager(&profile, command_line_.get());
+  // Turn off background mode.
+  manager.SetEnabled(false);
+  manager.DisableBackgroundMode();
+
+  // Status tray icons will not be created, launch on startup status will be set
+  // to "do not launch on startup".
+  EXPECT_CALL(manager, EnableLaunchOnStartup(false));
+  manager.OnBackgroundAppInstalled(NULL);
+  manager.OnBackgroundAppLoaded();
+  manager.OnBackgroundAppUnloaded();
+  manager.OnBackgroundAppUninstalled();
+
+  // Re-enable background mode.

[Rick Campbell, 2011/05/12 05:42:42]

Reverse the sense of this comment to match the code that follows.

[Andrew T Wilson (Slow), 2011/05/12 23:34:31]

Actually, I needed to reverse the sense of the code :) This test is supposed to
re-enable background mode and confirm that nothing happens since there are no
background apps installed. Good catch!

+  manager.SetEnabled(false);
+  manager.DisableBackgroundMode();
+}
+
+
+// App installs while disabled should do nothing.
+TEST_F(BackgroundModeManagerTest, EnableAfterBackgroundAppInstall) {
+  InSequence s;
+  TestingProfile profile;
+  TestBackgroundModeManager manager(&profile, command_line_.get());
+  EXPECT_CALL(manager, EnableLaunchOnStartup(true));
+  EXPECT_CALL(manager, CreateStatusTrayIcon());
+  EXPECT_CALL(manager, RemoveStatusTrayIcon());
+  EXPECT_CALL(manager, EnableLaunchOnStartup(false));
+  EXPECT_CALL(manager, CreateStatusTrayIcon());
+  EXPECT_CALL(manager, EnableLaunchOnStartup(true));
+  EXPECT_CALL(manager, RemoveStatusTrayIcon());
+  EXPECT_CALL(manager, EnableLaunchOnStartup(false));
+
+  // Install app, should show status tray icon.
+  manager.OnBackgroundAppInstalled(NULL);
+  manager.OnBackgroundAppLoaded();
+
+  // Turn off background mode - should hide status tray icon.
+  manager.SetEnabled(false);
+  manager.DisableBackgroundMode();
+
+  // Turn back on background mode - should show status tray icon.
+  manager.SetEnabled(true);
+  manager.EnableBackgroundMode();
+
+  // Uninstall app, should hide status tray icon again.
+  manager.OnBackgroundAppUnloaded();
+  manager.OnBackgroundAppUninstalled();
+}