Move all wallpaper file loading and decoding from DesktopBackgroundController to WallpaperManager.

chrome/browser/chromeos/login/wallpaper_manager_unittest.cc

 // Copyright 2013 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 <cstdlib>
 #include <cstring>
 
 #include "ash/ash_resources/grit/ash_resources.h"
 #include "ash/desktop_background/desktop_background_controller.h"
+#include "ash/desktop_background/desktop_background_controller_observer.h"
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
+#include "ash/test/display_manager_test_api.h"
+#include "ash/test/test_user_wallpaper_delegate.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
+#include "base/files/file_path.h"
+#include "base/files/scoped_temp_dir.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_service.h"
 #include "base/prefs/testing_pref_service.h"
 #include "chrome/browser/chromeos/login/fake_user_manager.h"
 #include "chrome/browser/chromeos/login/startup_utils.h"
 #include "chrome/browser/chromeos/login/user_manager_impl.h"
 #include "chrome/browser/chromeos/login/wallpaper_manager.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chrome/browser/chromeos/settings/device_settings_service.h"
+#include "chrome/browser/prefs/browser_prefs.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/test/base/testing_browser_process.h"
 #include "chromeos/chromeos_switches.h"
 #include "chromeos/settings/cros_settings_names.h"
 #include "chromeos/settings/cros_settings_provider.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/resource/resource_bundle.h"
+#include "ui/gfx/image/image.h"
 
 using namespace ash;
 
-const char kTestUser1[] = "test-user@example.com";
-const char kTestUser1Hash[] = "test-user@example.com-hash";
-
 namespace chromeos {
 
-class WallpaperManagerTest : public test::AshTestBase {
- public:
-  WallpaperManagerTest() : command_line_(CommandLine::NO_PROGRAM) {}
-
-  virtual ~WallpaperManagerTest() {}
-
-  virtual void SetUp() OVERRIDE {
-    test::AshTestBase::SetUp();
-
-    // Register an in-memory local settings instance.
-    local_state_.reset(new TestingPrefServiceSimple);
-    TestingBrowserProcess::GetGlobal()->SetLocalState(local_state_.get());
-    UserManager::RegisterPrefs(local_state_->registry());
-    // Wallpaper manager and user image managers prefs will be accessed by the
-    // unit-test as well.
-    UserImageManager::RegisterPrefs(local_state_->registry());
-    WallpaperManager::RegisterPrefs(local_state_->registry());
-
-    StartupUtils::RegisterPrefs(local_state_->registry());
-    StartupUtils::MarkDeviceRegistered();
-
-    ResetUserManager();
-  }
-
-  virtual void TearDown() OVERRIDE {
-    // Unregister the in-memory local settings instance.
-    TestingBrowserProcess::GetGlobal()->SetLocalState(0);
-
-    // Shut down the DeviceSettingsService.
-    DeviceSettingsService::Get()->UnsetSessionManager();
-
-    test::AshTestBase::TearDown();
-  }
-
-  void ResetUserManager() {
-    // Reset the UserManager singleton.
-    user_manager_enabler_.reset();
-    // Initialize the UserManager singleton to a fresh UserManagerImpl instance.
-    user_manager_enabler_.reset(
-        new ScopedUserManagerEnabler(new UserManagerImpl));
-  }
-
-  void AppendGuestSwitch() {
-    command_line_.AppendSwitch(switches::kGuestSession);
-    WallpaperManager::Get()->set_command_line_for_testing(&command_line_);
-  }
-
-  void WaitAsyncWallpaperLoad() {
-    base::MessageLoop::current()->RunUntilIdle();
-  }
-
- protected:
-  CommandLine command_line_;
-
-  scoped_ptr<TestingPrefServiceSimple> local_state_;
-
-  ScopedTestDeviceSettingsService test_device_settings_service_;
-  ScopedTestCrosSettings test_cros_settings_;
-
-  scoped_ptr<ScopedUserManagerEnabler> user_manager_enabler_;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(WallpaperManagerTest);
-};
-
-// Test for crbug.com/260755. If this test fails, it is probably because the
-// wallpaper of last logged in user is set as guest wallpaper.
-TEST_F(WallpaperManagerTest, GuestUserUseGuestWallpaper) {
-  UserManager::Get()->UserLoggedIn(kTestUser1, kTestUser1Hash, false);
-
-  std::string relative_path =
-      base::FilePath(kTestUser1Hash).Append(FILE_PATH_LITERAL("DUMMY")).value();
-  // Saves wallpaper info to local state for user |kTestUser1|.
-  WallpaperInfo info = {
-      relative_path,
-      WALLPAPER_LAYOUT_CENTER_CROPPED,
-      User::CUSTOMIZED,
-      base::Time::Now().LocalMidnight()
-  };
-  WallpaperManager::Get()->SetUserWallpaperInfo(kTestUser1, info, true);
-  ResetUserManager();
-
-  AppendGuestSwitch();
-  scoped_ptr<WallpaperManager::TestApi> test_api;
-  test_api.reset(new WallpaperManager::TestApi(WallpaperManager::Get()));
-  // If last logged in user's wallpaper is used in function InitializeWallpaper,
-  // this test will crash. InitializeWallpaper should be a noop after
-  // AppendGuestSwitch being called.
-  WallpaperManager::Get()->InitializeWallpaper();
-  EXPECT_TRUE(test_api->current_wallpaper_path().empty());
-  UserManager::Get()->UserLoggedIn(UserManager::kGuestUserName,
-                                   UserManager::kGuestUserName, false);
-  WaitAsyncWallpaperLoad();
-  EXPECT_FALSE(ash::Shell::GetInstance()->desktop_background_controller()->
-      SetDefaultWallpaper(true));
-}
-
 class WallpaperManagerCacheTest : public test::AshTestBase {
  public:
   WallpaperManagerCacheTest()
       : fake_user_manager_(new FakeUserManager()),
         scoped_user_manager_(fake_user_manager_) {
   }
 
  protected:
   virtual ~WallpaperManagerCacheTest() {}
 
@@ skipping 48 matching lines @@
   // Logged in users' wallpaper cache should be kept.
   EXPECT_TRUE(cached_wallpaper.BackedBySameObjectAs(test_user_1_wallpaper));
   EXPECT_TRUE(test_api->GetWallpaperFromCache(test_user_2, &cached_wallpaper));
   EXPECT_TRUE(cached_wallpaper.BackedBySameObjectAs(test_user_2_wallpaper));
 
   // Not logged in user's wallpaper cache should be cleared.
   EXPECT_FALSE(test_api->GetWallpaperFromCache(test_user_3, &cached_wallpaper));
 }
 
 }  // namespace chromeos