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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include <cstdlib>
      6 #include <cstring>
      7 
      8 #include "ash/ash_resources/grit/ash_resources.h"
      9 #include "ash/desktop_background/desktop_background_controller.h"
     10 #include "ash/shell.h"
     11 #include "ash/test/ash_test_base.h"
     12 #include "base/command_line.h"
     13 #include "base/file_util.h"
     14 #include "base/memory/scoped_ptr.h"
     15 #include "base/prefs/pref_service.h"
     16 #include "base/prefs/testing_pref_service.h"
     17 #include "chrome/browser/chromeos/login/startup_utils.h"
     18 #include "chrome/browser/chromeos/login/user_manager.h"
     19 #include "chrome/browser/chromeos/login/user_manager_impl.h"
     20 #include "chrome/browser/chromeos/login/wallpaper_manager.h"
     21 #include "chrome/browser/chromeos/settings/cros_settings.h"
     22 #include "chrome/browser/chromeos/settings/device_settings_service.h"
     23 #include "chrome/test/base/testing_browser_process.h"
     24 #include "chromeos/chromeos_switches.h"
     25 #include "chromeos/settings/cros_settings_names.h"
     26 #include "chromeos/settings/cros_settings_provider.h"
     27 #include "content/public/test/test_browser_thread.h"
     28 #include "testing/gtest/include/gtest/gtest.h"
     29 #include "ui/base/resource/resource_bundle.h"
     30 
     31 using namespace ash;
     32 
     33 const char kTestUser1[] = "test-user (at) example.com";
     34 const char kTestUser1Hash[] = "test-user (at) example.com-hash";
     35 
     36 namespace chromeos {
     37 
     38 class WallpaperManagerTest : public test::AshTestBase {
     39  public:
     40   WallpaperManagerTest() : command_line_(CommandLine::NO_PROGRAM) {}
     41 
     42   virtual ~WallpaperManagerTest() {}
     43 
     44   virtual void SetUp() OVERRIDE {
     45     test::AshTestBase::SetUp();
     46 
     47     // Register an in-memory local settings instance.
     48     local_state_.reset(new TestingPrefServiceSimple);
     49     TestingBrowserProcess::GetGlobal()->SetLocalState(local_state_.get());
     50     UserManager::RegisterPrefs(local_state_->registry());
     51     // Wallpaper manager and user image managers prefs will be accessed by the
     52     // unit-test as well.
     53     UserImageManager::RegisterPrefs(local_state_->registry());
     54     WallpaperManager::RegisterPrefs(local_state_->registry());
     55 
     56     StartupUtils::RegisterPrefs(local_state_->registry());
     57     StartupUtils::MarkDeviceRegistered();
     58 
     59     ResetUserManager();
     60   }
     61 
     62   virtual void TearDown() OVERRIDE {
     63     // Unregister the in-memory local settings instance.
     64     TestingBrowserProcess::GetGlobal()->SetLocalState(0);
     65 
     66     // Shut down the DeviceSettingsService.
     67     DeviceSettingsService::Get()->UnsetSessionManager();
     68 
     69     test::AshTestBase::TearDown();
     70   }
     71 
     72   void ResetUserManager() {
     73     // Reset the UserManager singleton.
     74     user_manager_enabler_.reset();
     75     // Initialize the UserManager singleton to a fresh UserManagerImpl instance.
     76     user_manager_enabler_.reset(
     77         new ScopedUserManagerEnabler(new UserManagerImpl));
     78   }
     79 
     80   void AppendGuestSwitch() {
     81     command_line_.AppendSwitch(switches::kGuestSession);
     82     WallpaperManager::Get()->set_command_line_for_testing(&command_line_);
     83   }
     84 
     85  protected:
     86   CommandLine command_line_;
     87 
     88   scoped_ptr<TestingPrefServiceSimple> local_state_;
     89 
     90   ScopedTestDeviceSettingsService test_device_settings_service_;
     91   ScopedTestCrosSettings test_cros_settings_;
     92 
     93   scoped_ptr<ScopedUserManagerEnabler> user_manager_enabler_;
     94 
     95  private:
     96   DISALLOW_COPY_AND_ASSIGN(WallpaperManagerTest);
     97 };
     98 
     99 // Test for crbug.com/260755. If this test fails, it is probably because the
    100 // wallpaper of last logged in user is set as guest wallpaper.
    101 TEST_F(WallpaperManagerTest, GuestUserUseGuestWallpaper) {
    102   UserManager::Get()->UserLoggedIn(kTestUser1, kTestUser1Hash, false);
    103 
    104   std::string relative_path =
    105       base::FilePath(kTestUser1Hash).Append(FILE_PATH_LITERAL("DUMMY")).value();
    106   // Saves wallpaper info to local state for user |kTestUser1|.
    107   WallpaperInfo info = {
    108       relative_path,
    109       WALLPAPER_LAYOUT_CENTER_CROPPED,
    110       User::CUSTOMIZED,
    111       base::Time::Now().LocalMidnight()
    112   };
    113   WallpaperManager::Get()->SetUserWallpaperInfo(kTestUser1, info, true);
    114   ResetUserManager();
    115 
    116   AppendGuestSwitch();
    117   scoped_ptr<WallpaperManager::TestApi> test_api;
    118   test_api.reset(new WallpaperManager::TestApi(WallpaperManager::Get()));
    119   // If last logged in user's wallpaper is used in function InitializeWallpaper,
    120   // this test will crash. InitializeWallpaper should be a noop after
    121   // AppendGuestSwitch being called.
    122   WallpaperManager::Get()->InitializeWallpaper();
    123   EXPECT_TRUE(test_api->current_wallpaper_path().empty());
    124   UserManager::Get()->UserLoggedIn(UserManager::kGuestUserName,
    125                                    UserManager::kGuestUserName, false);
    126   EXPECT_FALSE(ash::Shell::GetInstance()->desktop_background_controller()->
    127       SetDefaultWallpaper(true));
    128 }
    129 
    130 }  // namespace chromeos
    131