cros: Show dircryto migration banner

chrome/browser/chromeos/login/screens/user_selection_screen_browsertest.cc

+// Copyright 2017 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 <memory>
+#include <utility>
+
+#include "base/memory/ptr_util.h"
+#include "base/run_loop.h"
+#include "chrome/browser/chromeos/login/login_manager_test.h"
+#include "chrome/browser/chromeos/login/startup_utils.h"
+#include "chrome/browser/chromeos/login/test/oobe_screen_waiter.h"
+#include "chrome/browser/ui/webui/chromeos/login/oobe_ui.h"
+#include "chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h"
+#include "chromeos/dbus/dbus_thread_manager.h"
+#include "chromeos/dbus/fake_cryptohome_client.h"
+
+namespace chromeos {
+
+namespace {
+
+constexpr char kTestUser1[] = "test-user1@gmail.com";
+constexpr char kTestUser2[] = "test-user2@gmail.com";
+
+}  // namespace
+
+class UserSelectionScreenTest : public LoginManagerTest {
+ public:
+  UserSelectionScreenTest()
+      : LoginManagerTest(false /* should_launch_browser */) {}
+  ~UserSelectionScreenTest() override = default;
+
+  // LoginManagerTest:
+  void SetUpInProcessBrowserTestFixture() override {
+    auto cryptohome_client = base::MakeUnique<chromeos::FakeCryptohomeClient>();
+    fake_cryptohome_client_ = cryptohome_client.get();
+    DBusThreadManager::GetSetterForTesting()->SetCryptohomeClient(
+        std::move(cryptohome_client));
+  }
+
+  FakeCryptohomeClient* fake_cryptohome_client() {
+    return fake_cryptohome_client_;
+  }
+
+  OobeUI* GetOobeUI() {
+    return static_cast<OobeUI*>(web_contents()->GetWebUI()->GetController());
+  }
+
+ private:
+  // DBusThreadManager owns this.
+  FakeCryptohomeClient* fake_cryptohome_client_ = nullptr;
+
+  DISALLOW_COPY_AND_ASSIGN(UserSelectionScreenTest);
+};
+
+IN_PROC_BROWSER_TEST_F(UserSelectionScreenTest,
+                       PRE_ShowDircryptoMigrationBanner) {
+  RegisterUser(kTestUser1);
+  RegisterUser(kTestUser2);
+  StartupUtils::MarkOobeCompleted();
+}
+
+// Test that a banner shows up for users that need dircrypto migration.
+IN_PROC_BROWSER_TEST_F(UserSelectionScreenTest, ShowDircryptoMigrationBanner) {
+  // No banner for the first user since default is no migration.
+  JSExpect("!$('signin-banner').classList.contains('message-set')");
+
+  // Change the needs dircrypto migration response.
+  fake_cryptohome_client()->set_needs_dircrypto_migration(true);
+
+  // Focus to the 2nd user pod.
+  base::RunLoop pod_focus_wait_loop;
+  GetOobeUI()->signin_screen_handler()->SetFocusPODCallbackForTesting(
+      pod_focus_wait_loop.QuitClosure());
+  js_checker().Evaluate("$('pod-row').focusPod($('pod-row').pods[1])");
+  pod_focus_wait_loop.Run();
+
+  // Wait for FakeCryptohomeClient to send back the check result.
+  base::RunLoop().RunUntilIdle();
+
+  // Banner should be shown for the 2nd user.
+  JSExpect("$('signin-banner').classList.contains('message-set')");
+}
+
+}  // namespace chromeos