Add login screen locale and input method device policies

chrome/browser/chromeos/login/login_screen_policy_browsertest.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 "base/command_line.h"
 #include "base/memory/ref_counted.h"
+#include "base/threading/thread_task_runner_handle.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/chromeos/login/startup_utils.h"
 #include "chrome/browser/chromeos/policy/device_policy_cros_browser_test.h"
 #include "chrome/browser/chromeos/policy/proto/chrome_device_policy.pb.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
+#include "chrome/browser/lifetime/application_lifetime.h"
+#include "chrome/grit/generated_resources.h"
+#include "chrome/test/base/ui_test_utils.h"
 #include "chromeos/chromeos_switches.h"
 #include "chromeos/settings/cros_settings_names.h"
 #include "components/user_manager/user_manager.h"
-#include "content/public/test/test_utils.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "ui/base/ime/chromeos/input_method_manager.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/base/resource/resource_bundle.h"
 
 namespace em = enterprise_management;
 
 namespace chromeos {
 
 class LoginScreenPolicyTest : public policy::DevicePolicyCrosBrowserTest {
+ public:
+  void RefreshDevicePolicyAndWaitForSettingChange(
+      const char* cros_setting_name);
+
+ protected:
   void SetUpCommandLine(base::CommandLine* command_line) override {
     command_line->AppendSwitch(switches::kLoginManager);
+    command_line->AppendSwitch(switches::kForceLoginManagerInTests);
   }
 
   void SetUpInProcessBrowserTestFixture() override {
     InstallOwnerKey();
     MarkAsEnterpriseOwned();
     DevicePolicyCrosBrowserTest::SetUpInProcessBrowserTestFixture();
   }
+
+  void TearDownOnMainThread() override {
+    // This shuts down the login UI.
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
+        FROM_HERE, base::Bind(&chrome::AttemptExit));
+    base::RunLoop().RunUntilIdle();
+  }
 };
 
+void LoginScreenPolicyTest::RefreshDevicePolicyAndWaitForSettingChange(
+    const char* cros_setting_name) {
+  scoped_refptr<content::MessageLoopRunner> runner(
+      new content::MessageLoopRunner);
+  std::unique_ptr<CrosSettings::ObserverSubscription> subscription(
+      chromeos::CrosSettings::Get()->AddSettingsObserver(
+          cros_setting_name, runner->QuitClosure()));
+
+  RefreshDevicePolicy();
+  runner->Run();
+}
+
 IN_PROC_BROWSER_TEST_F(LoginScreenPolicyTest, DisableSupervisedUsers) {
   EXPECT_FALSE(user_manager::UserManager::Get()->AreSupervisedUsersAllowed());
 
-  scoped_refptr<content::MessageLoopRunner> runner(
-      new content::MessageLoopRunner);
-  std::unique_ptr<CrosSettings::ObserverSubscription> subscription(
-      chromeos::CrosSettings::Get()->AddSettingsObserver(
-          chromeos::kAccountsPrefSupervisedUsersEnabled,
-          runner->QuitClosure()));
-
   em::ChromeDeviceSettingsProto& proto(device_policy()->payload());
   proto.mutable_supervised_users_settings()->set_supervised_users_enabled(true);
-  RefreshDevicePolicy();
-
-  runner->Run();
+  RefreshDevicePolicyAndWaitForSettingChange(
+      chromeos::kAccountsPrefSupervisedUsersEnabled);
 
   EXPECT_TRUE(user_manager::UserManager::Get()->AreSupervisedUsersAllowed());
 }
 
+IN_PROC_BROWSER_TEST_F(LoginScreenPolicyTest, RestrictInputMethods) {
+  input_method::InputMethodManager* imm =
+      input_method::InputMethodManager::Get();
+  ASSERT_TRUE(imm);
+
+  ASSERT_EQ(
+      0U,
+      imm->GetActiveIMEState()->GetAllowedKeyboardLayoutInputMethods().size());
+
+  em::ChromeDeviceSettingsProto& proto(device_policy()->payload());
+  proto.mutable_login_screen_input_methods()->add_login_screen_input_methods(
+      "xkb:de::ger");
+  RefreshDevicePolicyAndWaitForSettingChange(
+      chromeos::kDeviceLoginScreenInputMethods);
+
+  ASSERT_EQ(
+      1U,
+      imm->GetActiveIMEState()->GetAllowedKeyboardLayoutInputMethods().size());
+
+  // Remove the policy again
+  proto.mutable_login_screen_input_methods()
+      ->clear_login_screen_input_methods();
+  RefreshDevicePolicyAndWaitForSettingChange(
+      chromeos::kDeviceLoginScreenInputMethods);
+
+  ASSERT_EQ(
+      0U,
+      imm->GetActiveIMEState()->GetAllowedKeyboardLayoutInputMethods().size());
+}
+
+class LoginScreenLocalePolicyTest : public LoginScreenPolicyTest {
+ protected:
+  LoginScreenLocalePolicyTest() {}
+
+  void SetUpInProcessBrowserTestFixture() override {
+    LoginScreenPolicyTest::SetUpInProcessBrowserTestFixture();
+
+    em::ChromeDeviceSettingsProto& proto(device_policy()->payload());
+    proto.mutable_login_screen_locales()->add_login_screen_locales("fr-FR");
+    RefreshDevicePolicy();
+
+    ResourceBundle::CleanupSharedInstance();

[xiyuan, 2017/01/25 19:24:14]

Is this necessary? If so, could we comment why it is needed?

[pmarko, 2017/01/26 12:32:58]

You're right, we don't. Removed.

+  }
+};
+
+IN_PROC_BROWSER_TEST_F(LoginScreenLocalePolicyTest,
+                       PRE_LoginLocaleEnforcedByPolicy) {
+  chromeos::StartupUtils::MarkOobeCompleted();
+}
+
+IN_PROC_BROWSER_TEST_F(LoginScreenLocalePolicyTest,
+                       LoginLocaleEnforcedByPolicy) {
+  // Verifies that the default locale can be overridden with policy.
+  EXPECT_EQ("fr", g_browser_process->GetApplicationLocale());
+  base::string16 french_title =
+      l10n_util::GetStringUTF16(IDS_LOGIN_POD_SIGNING_IN);
+
+  // Make sure this is really French and differs from the English title.
+  std::string loaded =
+      ui::ResourceBundle::GetSharedInstance().ReloadLocaleResources("en-US");
+  EXPECT_EQ("en-US", loaded);
+  base::string16 english_title =
+      l10n_util::GetStringUTF16(IDS_LOGIN_POD_SIGNING_IN);
+  EXPECT_NE(french_title, english_title);
+}
+
 }  // namespace chromeos