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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 <string>
      6 #include <vector>
      7 
      8 #include "base/command_line.h"
      9 #include "base/memory/ref_counted.h"
     10 #include "base/run_loop.h"
     11 #include "chrome/browser/chromeos/login/session/user_session_manager.h"
     12 #include "chrome/test/base/in_process_browser_test.h"
     13 #include "chromeos/chromeos_switches.h"
     14 #include "chromeos/dbus/cryptohome_client.h"
     15 #include "chromeos/dbus/dbus_thread_manager.h"
     16 #include "chromeos/dbus/fake_session_manager_client.h"
     17 #include "chromeos/dbus/session_manager_client.h"
     18 #include "components/user_manager/user.h"
     19 #include "components/user_manager/user_manager.h"
     20 #include "content/public/test/test_utils.h"
     21 #include "testing/gmock/include/gmock/gmock.h"
     22 #include "third_party/cros_system_api/dbus/service_constants.h"
     23 
     24 namespace chromeos {
     25 
     26 namespace {
     27 
     28 const char kUserId1[] = "user1 (at) example.com";
     29 const char kUserId2[] = "user2 (at) example.com";
     30 const char kUserId3[] = "user3 (at) example.com";
     31 
     32 }  // namespace
     33 
     34 class CrashRestoreSimpleTest : public InProcessBrowserTest {
     35  protected:
     36   CrashRestoreSimpleTest() {}
     37 
     38   virtual ~CrashRestoreSimpleTest() {}
     39 
     40   virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
     41     command_line->AppendSwitchASCII(switches::kLoginUser, kUserId1);
     42     command_line->AppendSwitchASCII(
     43         switches::kLoginProfile,
     44         CryptohomeClient::GetStubSanitizedUsername(kUserId1));
     45   }
     46 
     47   virtual void SetUpInProcessBrowserTestFixture() OVERRIDE {
     48     // Redirect session_manager DBus calls to FakeSessionManagerClient.
     49     session_manager_client_ = new FakeSessionManagerClient;
     50     chromeos::DBusThreadManager::GetSetterForTesting()->SetSessionManagerClient(
     51         scoped_ptr<SessionManagerClient>(session_manager_client_));
     52     session_manager_client_->StartSession(kUserId1);
     53   }
     54 
     55   FakeSessionManagerClient* session_manager_client_;
     56 };
     57 
     58 IN_PROC_BROWSER_TEST_F(CrashRestoreSimpleTest, RestoreSessionForOneUser) {
     59   user_manager::UserManager* user_manager = user_manager::UserManager::Get();
     60   user_manager::User* user = user_manager->GetActiveUser();
     61   ASSERT_TRUE(user);
     62   EXPECT_EQ(kUserId1, user->email());
     63   EXPECT_EQ(CryptohomeClient::GetStubSanitizedUsername(kUserId1),
     64             user->username_hash());
     65   EXPECT_EQ(1UL, user_manager->GetLoggedInUsers().size());
     66 }
     67 
     68 // Observer that keeps track of user sessions restore event.
     69 class UserSessionRestoreObserver : public UserSessionStateObserver {
     70  public:
     71   UserSessionRestoreObserver()
     72       : running_loop_(false),
     73         user_sessions_restored_(
     74             UserSessionManager::GetInstance()->UserSessionsRestored()) {
     75     if (!user_sessions_restored_)
     76       UserSessionManager::GetInstance()->AddSessionStateObserver(this);
     77   }
     78   virtual ~UserSessionRestoreObserver() {}
     79 
     80   virtual void PendingUserSessionsRestoreFinished() OVERRIDE {
     81     user_sessions_restored_ = true;
     82     UserSessionManager::GetInstance()->RemoveSessionStateObserver(this);
     83     if (!running_loop_)
     84       return;
     85 
     86     message_loop_runner_->Quit();
     87     running_loop_ = false;
     88   }
     89 
     90   // Wait until the user sessions are restored. If that happened between the
     91   // construction of this object and this call or even before it was created
     92   // then it returns immediately.
     93   void Wait() {
     94     if (user_sessions_restored_)
     95       return;
     96 
     97     running_loop_ = true;
     98     message_loop_runner_ = new content::MessageLoopRunner();
     99     message_loop_runner_->Run();
    100   }
    101 
    102  private:
    103   bool running_loop_;
    104   bool user_sessions_restored_;
    105   scoped_refptr<content::MessageLoopRunner> message_loop_runner_;
    106 
    107   DISALLOW_COPY_AND_ASSIGN(UserSessionRestoreObserver);
    108 };
    109 
    110 class CrashRestoreComplexTest : public CrashRestoreSimpleTest {
    111  protected:
    112   CrashRestoreComplexTest() {}
    113   virtual ~CrashRestoreComplexTest() {}
    114 
    115   virtual void SetUpInProcessBrowserTestFixture() OVERRIDE {
    116     CrashRestoreSimpleTest::SetUpInProcessBrowserTestFixture();
    117     session_manager_client_->StartSession(kUserId2);
    118     session_manager_client_->StartSession(kUserId3);
    119   }
    120 };
    121 
    122 IN_PROC_BROWSER_TEST_F(CrashRestoreComplexTest, RestoreSessionForThreeUsers) {
    123   {
    124     UserSessionRestoreObserver restore_observer;
    125     restore_observer.Wait();
    126   }
    127 
    128   DCHECK(UserSessionManager::GetInstance()->UserSessionsRestored());
    129 
    130   // User that is last in the user sessions map becomes active. This behavior
    131   // will become better defined once each user gets a separate user desktop.
    132   user_manager::UserManager* user_manager = user_manager::UserManager::Get();
    133   user_manager::User* user = user_manager->GetActiveUser();
    134   ASSERT_TRUE(user);
    135   EXPECT_EQ(kUserId3, user->email());
    136   EXPECT_EQ(CryptohomeClient::GetStubSanitizedUsername(kUserId3),
    137             user->username_hash());
    138   const user_manager::UserList& users = user_manager->GetLoggedInUsers();
    139   ASSERT_EQ(3UL, users.size());
    140 
    141   // User that becomes active moves to the beginning of the list.
    142   EXPECT_EQ(kUserId3, users[0]->email());
    143   EXPECT_EQ(CryptohomeClient::GetStubSanitizedUsername(kUserId3),
    144             users[0]->username_hash());
    145   EXPECT_EQ(kUserId2, users[1]->email());
    146   EXPECT_EQ(CryptohomeClient::GetStubSanitizedUsername(kUserId2),
    147             users[1]->username_hash());
    148   EXPECT_EQ(kUserId1, users[2]->email());
    149   EXPECT_EQ(CryptohomeClient::GetStubSanitizedUsername(kUserId1),
    150             users[2]->username_hash());
    151 }
    152 
    153 }  // namespace chromeos
    154