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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/cros/cros_in_process_browser_test.h"
     12 #include "chrome/browser/chromeos/login/user.h"
     13 #include "chrome/browser/chromeos/login/user_manager.h"
     14 #include "chrome/common/chrome_switches.h"
     15 #include "chromeos/chromeos_switches.h"
     16 #include "chromeos/dbus/cryptohome_client.h"
     17 #include "chromeos/dbus/fake_session_manager_client.h"
     18 #include "chromeos/dbus/mock_dbus_thread_manager_without_gmock.h"
     19 #include "chromeos/dbus/session_manager_client.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 CrosInProcessBrowserTest {
     35  protected:
     36   CrashRestoreSimpleTest() {}
     37 
     38   virtual ~CrashRestoreSimpleTest() {}
     39 
     40   virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
     41     command_line->AppendSwitch(::switches::kMultiProfiles);
     42     command_line->AppendSwitchASCII(switches::kLoginUser, kUserId1);
     43     command_line->AppendSwitchASCII(
     44         switches::kLoginProfile,
     45         CryptohomeClient::GetStubSanitizedUsername(kUserId1));
     46   }
     47 
     48   virtual void SetUpInProcessBrowserTestFixture() OVERRIDE {
     49     // Redirect session_manager DBus calls to FakeSessionManagerClient.
     50     MockDBusThreadManagerWithoutGMock* dbus_thread_manager =
     51         new MockDBusThreadManagerWithoutGMock();
     52     session_manager_client_ =
     53         dbus_thread_manager->fake_session_manager_client();
     54     DBusThreadManager::InitializeForTesting(dbus_thread_manager);
     55     session_manager_client_->StartSession(kUserId1);
     56   }
     57 
     58   FakeSessionManagerClient* session_manager_client_;
     59 };
     60 
     61 IN_PROC_BROWSER_TEST_F(CrashRestoreSimpleTest, RestoreSessionForOneUser) {
     62   UserManager* user_manager = UserManager::Get();
     63   User* user = user_manager->GetActiveUser();
     64   ASSERT_TRUE(user);
     65   EXPECT_EQ(kUserId1, user->email());
     66   EXPECT_EQ(CryptohomeClient::GetStubSanitizedUsername(kUserId1),
     67             user->username_hash());
     68   EXPECT_EQ(1UL, user_manager->GetLoggedInUsers().size());
     69 }
     70 
     71 // Observer that keeps track of user sessions restore event.
     72 class UserSessionRestoreObserver :
     73     public UserManager::UserSessionStateObserver {
     74  public:
     75   UserSessionRestoreObserver()
     76       : running_loop_(false),
     77         user_sessions_restored_(UserManager::Get()->UserSessionsRestored()) {
     78     if (!user_sessions_restored_)
     79       UserManager::Get()->AddSessionStateObserver(this);
     80   }
     81   virtual ~UserSessionRestoreObserver() {}
     82 
     83   virtual void PendingUserSessionsRestoreFinished() OVERRIDE {
     84     user_sessions_restored_ = true;
     85     UserManager::Get()->RemoveSessionStateObserver(this);
     86     if (!running_loop_)
     87       return;
     88 
     89     message_loop_runner_->Quit();
     90     running_loop_ = false;
     91   }
     92 
     93   // Wait until the user sessions are restored. If that happened between the
     94   // construction of this object and this call or even before it was created
     95   // then it returns immediately.
     96   void Wait() {
     97     if (user_sessions_restored_)
     98       return;
     99 
    100     running_loop_ = true;
    101     message_loop_runner_ = new content::MessageLoopRunner();
    102     message_loop_runner_->Run();
    103   }
    104 
    105  private:
    106   bool running_loop_;
    107   bool user_sessions_restored_;
    108   scoped_refptr<content::MessageLoopRunner> message_loop_runner_;
    109 
    110   DISALLOW_COPY_AND_ASSIGN(UserSessionRestoreObserver);
    111 };
    112 
    113 class CrashRestoreComplexTest : public CrashRestoreSimpleTest {
    114  protected:
    115   CrashRestoreComplexTest() {}
    116   virtual ~CrashRestoreComplexTest() {}
    117 
    118   virtual void SetUpInProcessBrowserTestFixture() OVERRIDE {
    119     CrashRestoreSimpleTest::SetUpInProcessBrowserTestFixture();
    120     session_manager_client_->StartSession(kUserId2);
    121     session_manager_client_->StartSession(kUserId3);
    122   }
    123 };
    124 
    125 IN_PROC_BROWSER_TEST_F(CrashRestoreComplexTest, RestoreSessionForThreeUsers) {
    126   {
    127     UserSessionRestoreObserver restore_observer;
    128     restore_observer.Wait();
    129   }
    130 
    131   UserManager* user_manager = UserManager::Get();
    132   DCHECK(user_manager->UserSessionsRestored());
    133 
    134   // User that is last in the user sessions map becomes active. This behavior
    135   // will become better defined once each user gets a separate user desktop.
    136   User* user = user_manager->GetActiveUser();
    137   ASSERT_TRUE(user);
    138   EXPECT_EQ(kUserId3, user->email());
    139   EXPECT_EQ(CryptohomeClient::GetStubSanitizedUsername(kUserId3),
    140             user->username_hash());
    141   const UserList& users = user_manager->GetLoggedInUsers();
    142   ASSERT_EQ(3UL, users.size());
    143 
    144   // User that becomes active moves to the beginning of the list.
    145   EXPECT_EQ(kUserId3, users[0]->email());
    146   EXPECT_EQ(CryptohomeClient::GetStubSanitizedUsername(kUserId3),
    147             users[0]->username_hash());
    148   EXPECT_EQ(kUserId2, users[1]->email());
    149   EXPECT_EQ(CryptohomeClient::GetStubSanitizedUsername(kUserId2),
    150             users[1]->username_hash());
    151   EXPECT_EQ(kUserId1, users[2]->email());
    152   EXPECT_EQ(CryptohomeClient::GetStubSanitizedUsername(kUserId1),
    153             users[2]->username_hash());
    154 }
    155 
    156 }  // namespace chromeos
    157