chromeos/disks/disk_mount_manager_unittest.cc

   1 // Copyright (c) 2012 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 "base/bind.h"
   6 #include "base/message_loop/message_loop.h"
   7 #include "chromeos/dbus/dbus_thread_manager.h"
   8 #include "chromeos/dbus/fake_cros_disks_client.h"
   9 #include "chromeos/disks/disk_mount_manager.h"
  10 #include "testing/gmock/include/gmock/gmock.h"
  11 #include "testing/gtest/include/gtest/gtest.h"
  12
  13 using chromeos::disks::DiskMountManager;
  14 using chromeos::CrosDisksClient;
  15 using chromeos::DBusThreadManager;
  16 using chromeos::FakeCrosDisksClient;
  17 using testing::_;
  18 using testing::Field;
  19 using testing::InSequence;
  20
  21 namespace {
  22
  23 // Holds information needed to create a DiskMountManager::Disk instance.
  24 struct TestDiskInfo {
  25   const char* source_path;
  26   const char* mount_path;
  27   const char* system_path;
  28   const char* file_path;
  29   const char* device_label;
  30   const char* drive_label;
  31   const char* vendor_id;
  32   const char* vendor_name;
  33   const char* product_id;
  34   const char* product_name;
  35   const char* fs_uuid;
  36   const char* system_path_prefix;
  37   chromeos::DeviceType device_type;
  38   uint64 size_in_bytes;
  39   bool is_parent;
  40   bool is_read_only;
  41   bool has_media;
  42   bool on_boot_device;
  43   bool on_removable_device;
  44   bool is_hidden;
  45 };
  46
  47 // Holds information to create a DiskMOuntManager::MountPointInfo instance.
  48 struct TestMountPointInfo {
  49   const char* source_path;
  50   const char* mount_path;
  51   chromeos::MountType mount_type;
  52   chromeos::disks::MountCondition mount_condition;
  53 };
  54
  55 // List of disks held in DiskMountManager at the begining of the test.
  56 const TestDiskInfo kTestDisks[] = {
  57   {
  58     "/device/source_path",
  59     "/device/mount_path",
  60     "/device/prefix/system_path",
  61     "/device/file_path",
  62     "/device/device_label",
  63     "/device/drive_label",
  64     "/device/vendor_id",
  65     "/device/vendor_name",
  66     "/device/product_id",
  67     "/device/product_name",
  68     "/device/fs_uuid",
  69     "/device/prefix",
  70     chromeos::DEVICE_TYPE_USB,
  71     1073741824,  // size in bytes
  72     false,  // is parent
  73     false,  // is read only
  74     true,  // has media
  75     false,  // is on boot device
  76     true,  // is on removable device
  77     false  // is hidden
  78   },
  79 };
  80
  81 // List of mount points  held in DiskMountManager at the begining of the test.
  82 const TestMountPointInfo kTestMountPoints[] = {
  83   {
  84     "/archive/source_path",
  85     "/archive/mount_path",
  86     chromeos::MOUNT_TYPE_ARCHIVE,
  87     chromeos::disks::MOUNT_CONDITION_NONE
  88   },
  89   {
  90     "/device/source_path",
  91     "/device/mount_path",
  92     chromeos::MOUNT_TYPE_DEVICE,
  93     chromeos::disks::MOUNT_CONDITION_NONE
  94   },
  95 };
  96
  97 // Mocks DiskMountManager observer.
  98 class MockDiskMountManagerObserver : public DiskMountManager::Observer {
  99  public:
 100   virtual ~MockDiskMountManagerObserver() {}
 101
 102   MOCK_METHOD2(OnDiskEvent, void(DiskMountManager::DiskEvent event,
 103                                  const DiskMountManager::Disk* disk));
 104   MOCK_METHOD2(OnDeviceEvent, void(DiskMountManager::DeviceEvent event,
 105                                    const std::string& device_path));
 106   MOCK_METHOD3(OnMountEvent,
 107       void(DiskMountManager::MountEvent event,
 108            chromeos::MountError error_code,
 109            const DiskMountManager::MountPointInfo& mount_point));
 110   MOCK_METHOD3(OnFormatEvent,
 111       void(DiskMountManager::FormatEvent event,
 112            chromeos::FormatError error_code,
 113            const std::string& device_path));
 114 };
 115
 116 class DiskMountManagerTest : public testing::Test {
 117  public:
 118   DiskMountManagerTest() {}
 119   ~DiskMountManagerTest() override {}
 120
 121   // Sets up test dbus tread manager and disks mount manager.
 122   // Initializes disk mount manager disks and mount points.
 123   // Adds a test observer to the disk mount manager.
 124   void SetUp() override {
 125     fake_cros_disks_client_ = new FakeCrosDisksClient;
 126     DBusThreadManager::GetSetterForTesting()->SetCrosDisksClient(
 127         scoped_ptr<CrosDisksClient>(fake_cros_disks_client_));
 128
 129     DiskMountManager::Initialize();
 130
 131     InitDisksAndMountPoints();
 132
 133     DiskMountManager::GetInstance()->AddObserver(&observer_);
 134   }
 135
 136   // Shuts down dbus thread manager and disk moutn manager used in the test.
 137   void TearDown() override {
 138     DiskMountManager::GetInstance()->RemoveObserver(&observer_);
 139     DiskMountManager::Shutdown();
 140     DBusThreadManager::Shutdown();
 141   }
 142
 143  protected:
 144   // Checks if disk mount manager contains a mount point with specified moutn
 145   // path.
 146   bool HasMountPoint(const std::string& mount_path) {
 147     const DiskMountManager::MountPointMap& mount_points =
 148         DiskMountManager::GetInstance()->mount_points();
 149     return mount_points.find(mount_path) != mount_points.end();
 150   }
 151
 152  private:
 153   // Adds a new disk to the disk mount manager.
 154   void AddTestDisk(const TestDiskInfo& disk) {
 155     EXPECT_TRUE(DiskMountManager::GetInstance()->AddDiskForTest(
 156         new DiskMountManager::Disk(disk.source_path,
 157                                    disk.mount_path,
 158                                    disk.system_path,
 159                                    disk.file_path,
 160                                    disk.device_label,
 161                                    disk.drive_label,
 162                                    disk.vendor_id,
 163                                    disk.vendor_name,
 164                                    disk.product_id,
 165                                    disk.product_name,
 166                                    disk.fs_uuid,
 167                                    disk.system_path_prefix,
 168                                    disk.device_type,
 169                                    disk.size_in_bytes,
 170                                    disk.is_parent,
 171                                    disk.is_read_only,
 172                                    disk.has_media,
 173                                    disk.on_boot_device,
 174                                    disk.on_removable_device,
 175                                    disk.is_hidden)));
 176   }
 177
 178   // Adds a new mount point to the disk mount manager.
 179   // If the moutn point is a device mount point, disk with its source path
 180   // should already be added to the disk mount manager.
 181   void AddTestMountPoint(const TestMountPointInfo& mount_point) {
 182     EXPECT_TRUE(DiskMountManager::GetInstance()->AddMountPointForTest(
 183         DiskMountManager::MountPointInfo(mount_point.source_path,
 184                                          mount_point.mount_path,
 185                                          mount_point.mount_type,
 186                                          mount_point.mount_condition)));
 187   }
 188
 189   // Adds disks and mount points to disk mount manager.
 190   void InitDisksAndMountPoints() {
 191     // Disks should be  added first (when adding device mount points it is
 192     // expected that the corresponding disk is already added).
 193     for (size_t i = 0; i < arraysize(kTestDisks); i++)
 194       AddTestDisk(kTestDisks[i]);
 195
 196     for (size_t i = 0; i < arraysize(kTestMountPoints); i++)
 197       AddTestMountPoint(kTestMountPoints[i]);
 198   }
 199
 200  protected:
 201   chromeos::FakeCrosDisksClient* fake_cros_disks_client_;
 202   MockDiskMountManagerObserver observer_;
 203   base::MessageLoopForUI message_loop_;
 204 };
 205
 206 // Tests that the observer gets notified on attempt to format non existent mount
 207 // point.
 208 TEST_F(DiskMountManagerTest, Format_NotMounted) {
 209   EXPECT_CALL(observer_, OnFormatEvent(DiskMountManager::FORMAT_COMPLETED,
 210                                        chromeos::FORMAT_ERROR_UNKNOWN,
 211                                        "/mount/non_existent"))
 212       .Times(1);
 213   DiskMountManager::GetInstance()->FormatMountedDevice("/mount/non_existent");
 214 }
 215
 216 // Tests that it is not possible to format archive mount point.
 217 TEST_F(DiskMountManagerTest, Format_Archive) {
 218   EXPECT_CALL(observer_, OnFormatEvent(DiskMountManager::FORMAT_COMPLETED,
 219                                        chromeos::FORMAT_ERROR_UNKNOWN,
 220                                        "/archive/source_path"))
 221       .Times(1);
 222
 223   DiskMountManager::GetInstance()->FormatMountedDevice("/archive/mount_path");
 224 }
 225
 226 // Tests that format fails if the device cannot be unmounted.
 227 TEST_F(DiskMountManagerTest, Format_FailToUnmount) {
 228   // Before formatting mounted device, the device should be unmounted.
 229   // In this test unmount will fail, and there should be no attempt to
 230   // format the device.
 231
 232   // Set up expectations for observer mock.
 233   // Observer should be notified that unmount attempt fails and format task
 234   // failed to start.
 235   {
 236     InSequence s;
 237
 238     EXPECT_CALL(observer_,
 239         OnMountEvent(DiskMountManager::UNMOUNTING,
 240                      chromeos::MOUNT_ERROR_INTERNAL,
 241                      Field(&DiskMountManager::MountPointInfo::mount_path,
 242                            "/device/mount_path")))
 243         .Times(1);
 244
 245     EXPECT_CALL(observer_, OnFormatEvent(DiskMountManager::FORMAT_COMPLETED,
 246                                          chromeos::FORMAT_ERROR_UNKNOWN,
 247                                          "/device/source_path"))
 248         .Times(1);
 249   }
 250
 251   fake_cros_disks_client_->MakeUnmountFail();
 252   // Start test.
 253   DiskMountManager::GetInstance()->FormatMountedDevice("/device/mount_path");
 254
 255   // Cros disks will respond asynchronoulsy, so let's drain the message loop.
 256   message_loop_.RunUntilIdle();
 257
 258   EXPECT_EQ(1, fake_cros_disks_client_->unmount_call_count());
 259   EXPECT_EQ("/device/mount_path",
 260             fake_cros_disks_client_->last_unmount_device_path());
 261   EXPECT_EQ(chromeos::UNMOUNT_OPTIONS_NONE,
 262             fake_cros_disks_client_->last_unmount_options());
 263   EXPECT_EQ(0, fake_cros_disks_client_->format_call_count());
 264
 265   // The device mount should still be here.
 266   EXPECT_TRUE(HasMountPoint("/device/mount_path"));
 267 }
 268
 269 // Tests that observer is notified when cros disks fails to start format
 270 // process.
 271 TEST_F(DiskMountManagerTest, Format_FormatFailsToStart) {
 272   // Before formatting mounted device, the device should be unmounted.
 273   // In this test, unmount will succeed, but call to Format method will
 274   // fail.
 275
 276   // Set up expectations for observer mock.
 277   // Observer should be notified that the device was unmounted and format task
 278   // failed to start.
 279   {
 280     InSequence s;
 281
 282     EXPECT_CALL(observer_,
 283         OnMountEvent(DiskMountManager::UNMOUNTING,
 284                      chromeos::MOUNT_ERROR_NONE,
 285                      Field(&DiskMountManager::MountPointInfo::mount_path,
 286                            "/device/mount_path")))
 287         .Times(1);
 288
 289     EXPECT_CALL(observer_, OnFormatEvent(DiskMountManager::FORMAT_COMPLETED,
 290                                          chromeos::FORMAT_ERROR_UNKNOWN,
 291                                          "/device/source_path"))
 292         .Times(1);
 293   }
 294
 295   fake_cros_disks_client_->MakeFormatFail();
 296   // Start the test.
 297   DiskMountManager::GetInstance()->FormatMountedDevice("/device/mount_path");
 298
 299   // Cros disks will respond asynchronoulsy, so let's drain the message loop.
 300   message_loop_.RunUntilIdle();
 301
 302   EXPECT_EQ(1, fake_cros_disks_client_->unmount_call_count());
 303   EXPECT_EQ("/device/mount_path",
 304             fake_cros_disks_client_->last_unmount_device_path());
 305   EXPECT_EQ(chromeos::UNMOUNT_OPTIONS_NONE,
 306             fake_cros_disks_client_->last_unmount_options());
 307   EXPECT_EQ(1, fake_cros_disks_client_->format_call_count());
 308   EXPECT_EQ("/device/source_path",
 309             fake_cros_disks_client_->last_format_device_path());
 310   EXPECT_EQ("vfat", fake_cros_disks_client_->last_format_filesystem());
 311
 312   // The device mount should be gone.
 313   EXPECT_FALSE(HasMountPoint("/device/mount_path"));
 314 }
 315
 316 // Tests the case where there are two format requests for the same device.
 317 TEST_F(DiskMountManagerTest, Format_ConcurrentFormatCalls) {
 318   // Only the first format request should be processed (the second unmount
 319   // request fails because the device is already unmounted at that point).
 320   // CrosDisksClient will report that the format process for the first request
 321   // is successfully started.
 322
 323   // Set up expectations for observer mock.
 324   // The observer should get a FORMAT_STARTED event for one format request and a
 325   // FORMAT_COMPLETED with an error code for the other format request. The
 326   // formatting will be started only for the first request.
 327   // There should be only one UNMOUNTING event. The result of the second one
 328   // should not be reported as the mount point will go away after the first
 329   // request.
 330   //
 331   // Note that in this test the format completion signal will not be simulated,
 332   // so the observer should not get FORMAT_COMPLETED signal.
 333   {
 334     InSequence s;
 335
 336     EXPECT_CALL(observer_,
 337         OnMountEvent(DiskMountManager::UNMOUNTING,
 338                      chromeos::MOUNT_ERROR_NONE,
 339                      Field(&DiskMountManager::MountPointInfo::mount_path,
 340                            "/device/mount_path")))
 341         .Times(1);
 342
 343     EXPECT_CALL(observer_, OnFormatEvent(DiskMountManager::FORMAT_COMPLETED,
 344                                          chromeos::FORMAT_ERROR_UNKNOWN,
 345                                          "/device/source_path"))
 346         .Times(1);
 347
 348     EXPECT_CALL(observer_, OnFormatEvent(DiskMountManager::FORMAT_STARTED,
 349                                          chromeos::FORMAT_ERROR_NONE,
 350                                          "/device/source_path"))
 351         .Times(1);
 352   }
 353
 354   fake_cros_disks_client_->set_unmount_listener(
 355       base::Bind(&FakeCrosDisksClient::MakeUnmountFail,
 356                  base::Unretained(fake_cros_disks_client_)));
 357   // Start the test.
 358   DiskMountManager::GetInstance()->FormatMountedDevice("/device/mount_path");
 359   DiskMountManager::GetInstance()->FormatMountedDevice("/device/mount_path");
 360
 361   // Cros disks will respond asynchronoulsy, so let's drain the message loop.
 362   message_loop_.RunUntilIdle();
 363
 364   EXPECT_EQ(2, fake_cros_disks_client_->unmount_call_count());
 365   EXPECT_EQ("/device/mount_path",
 366             fake_cros_disks_client_->last_unmount_device_path());
 367   EXPECT_EQ(chromeos::UNMOUNT_OPTIONS_NONE,
 368             fake_cros_disks_client_->last_unmount_options());
 369   EXPECT_EQ(1, fake_cros_disks_client_->format_call_count());
 370   EXPECT_EQ("/device/source_path",
 371             fake_cros_disks_client_->last_format_device_path());
 372   EXPECT_EQ("vfat",
 373             fake_cros_disks_client_->last_format_filesystem());
 374
 375   // The device mount should be gone.
 376   EXPECT_FALSE(HasMountPoint("/device/mount_path"));
 377 }
 378
 379 // Tests the case when the format process actually starts and fails.
 380 TEST_F(DiskMountManagerTest, Format_FormatFails) {
 381   // Both unmount and format device cals are successful in this test.
 382
 383   // Set up expectations for observer mock.
 384   // The observer should get notified that the device was unmounted and that
 385   // formatting has started.
 386   // After the formatting starts, the test will simulate failing
 387   // FORMAT_COMPLETED signal, so the observer should also be notified the
 388   // formatting has failed (FORMAT_COMPLETED event).
 389   {
 390     InSequence s;
 391
 392     EXPECT_CALL(observer_,
 393         OnMountEvent(DiskMountManager::UNMOUNTING,
 394                      chromeos::MOUNT_ERROR_NONE,
 395                      Field(&DiskMountManager::MountPointInfo::mount_path,
 396                            "/device/mount_path")))
 397         .Times(1);
 398
 399     EXPECT_CALL(observer_, OnFormatEvent(DiskMountManager::FORMAT_STARTED,
 400                                          chromeos::FORMAT_ERROR_NONE,
 401                                          "/device/source_path"))
 402         .Times(1);
 403
 404     EXPECT_CALL(observer_, OnFormatEvent(DiskMountManager::FORMAT_COMPLETED,
 405                                          chromeos::FORMAT_ERROR_UNKNOWN,
 406                                          "/device/source_path"))
 407         .Times(1);
 408   }
 409
 410   // Start the test.
 411   DiskMountManager::GetInstance()->FormatMountedDevice("/device/mount_path");
 412
 413   // Wait for Unmount and Format calls to end.
 414   message_loop_.RunUntilIdle();
 415
 416   EXPECT_EQ(1, fake_cros_disks_client_->unmount_call_count());
 417   EXPECT_EQ("/device/mount_path",
 418             fake_cros_disks_client_->last_unmount_device_path());
 419   EXPECT_EQ(chromeos::UNMOUNT_OPTIONS_NONE,
 420             fake_cros_disks_client_->last_unmount_options());
 421   EXPECT_EQ(1, fake_cros_disks_client_->format_call_count());
 422   EXPECT_EQ("/device/source_path",
 423             fake_cros_disks_client_->last_format_device_path());
 424   EXPECT_EQ("vfat", fake_cros_disks_client_->last_format_filesystem());
 425
 426   // The device should be unmounted by now.
 427   EXPECT_FALSE(HasMountPoint("/device/mount_path"));
 428
 429   // Send failing FORMAT_COMPLETED signal.
 430   // The failure is marked by ! in fromt of the path (but this should change
 431   // soon).
 432   fake_cros_disks_client_->SendFormatCompletedEvent(
 433       chromeos::FORMAT_ERROR_UNKNOWN, "/device/source_path");
 434 }
 435
 436 // Tests the case when formatting completes successfully.
 437 TEST_F(DiskMountManagerTest, Format_FormatSuccess) {
 438   // Set up cros disks client mocks.
 439   // Both unmount and format device cals are successful in this test.
 440
 441   // Set up expectations for observer mock.
 442   // The observer should receive UNMOUNTING, FORMAT_STARTED and FORMAT_COMPLETED
 443   // events (all of them without an error set).
 444   {
 445     InSequence s;
 446
 447     EXPECT_CALL(observer_,
 448         OnMountEvent(DiskMountManager::UNMOUNTING,
 449                      chromeos::MOUNT_ERROR_NONE,
 450                      Field(&DiskMountManager::MountPointInfo::mount_path,
 451                            "/device/mount_path")))
 452         .Times(1);
 453
 454     EXPECT_CALL(observer_, OnFormatEvent(DiskMountManager::FORMAT_STARTED,
 455                                          chromeos::FORMAT_ERROR_NONE,
 456                                          "/device/source_path"))
 457         .Times(1);
 458
 459     EXPECT_CALL(observer_, OnFormatEvent(DiskMountManager::FORMAT_COMPLETED,
 460                                          chromeos::FORMAT_ERROR_NONE,
 461                                          "/device/source_path"))
 462         .Times(1);
 463   }
 464
 465   // Start the test.
 466   DiskMountManager::GetInstance()->FormatMountedDevice("/device/mount_path");
 467
 468   // Wait for Unmount and Format calls to end.
 469   message_loop_.RunUntilIdle();
 470
 471   EXPECT_EQ(1, fake_cros_disks_client_->unmount_call_count());
 472   EXPECT_EQ("/device/mount_path",
 473             fake_cros_disks_client_->last_unmount_device_path());
 474   EXPECT_EQ(chromeos::UNMOUNT_OPTIONS_NONE,
 475             fake_cros_disks_client_->last_unmount_options());
 476   EXPECT_EQ(1, fake_cros_disks_client_->format_call_count());
 477   EXPECT_EQ("/device/source_path",
 478             fake_cros_disks_client_->last_format_device_path());
 479   EXPECT_EQ("vfat", fake_cros_disks_client_->last_format_filesystem());
 480
 481   // The device should be unmounted by now.
 482   EXPECT_FALSE(HasMountPoint("/device/mount_path"));
 483
 484   // Simulate cros_disks reporting success.
 485   fake_cros_disks_client_->SendFormatCompletedEvent(
 486       chromeos::FORMAT_ERROR_NONE, "/device/source_path");
 487 }
 488
 489 // Tests that it's possible to format the device twice in a row (this may not be
 490 // true if the list of pending formats is not properly cleared).
 491 TEST_F(DiskMountManagerTest, Format_ConsecutiveFormatCalls) {
 492   // All unmount and format device cals are successful in this test.
 493   // Each of the should be made twice (once for each formatting task).
 494
 495   // Set up expectations for observer mock.
 496   // The observer should receive UNMOUNTING, FORMAT_STARTED and FORMAT_COMPLETED
 497   // events (all of them without an error set) twice (once for each formatting
 498   // task).
 499   // Also, there should be a MOUNTING event when the device remounting is
 500   // simulated.
 501   EXPECT_CALL(observer_, OnFormatEvent(DiskMountManager::FORMAT_COMPLETED,
 502                                        chromeos::FORMAT_ERROR_NONE,
 503                                        "/device/source_path"))
 504       .Times(2);
 505
 506   EXPECT_CALL(observer_, OnFormatEvent(DiskMountManager::FORMAT_STARTED,
 507                                        chromeos::FORMAT_ERROR_NONE,
 508                                        "/device/source_path"))
 509       .Times(2);
 510
 511   EXPECT_CALL(observer_,
 512       OnMountEvent(DiskMountManager::UNMOUNTING,
 513                    chromeos::MOUNT_ERROR_NONE,
 514                    Field(&DiskMountManager::MountPointInfo::mount_path,
 515                          "/device/mount_path")))
 516       .Times(2);
 517
 518   EXPECT_CALL(observer_,
 519       OnMountEvent(DiskMountManager::MOUNTING,
 520                    chromeos::MOUNT_ERROR_NONE,
 521                    Field(&DiskMountManager::MountPointInfo::mount_path,
 522                          "/device/mount_path")))
 523       .Times(1);
 524
 525   // Start the test.
 526   DiskMountManager::GetInstance()->FormatMountedDevice("/device/mount_path");
 527
 528   // Wait for Unmount and Format calls to end.
 529   message_loop_.RunUntilIdle();
 530
 531   EXPECT_EQ(1, fake_cros_disks_client_->unmount_call_count());
 532   EXPECT_EQ("/device/mount_path",
 533             fake_cros_disks_client_->last_unmount_device_path());
 534   EXPECT_EQ(chromeos::UNMOUNT_OPTIONS_NONE,
 535             fake_cros_disks_client_->last_unmount_options());
 536   EXPECT_EQ(1, fake_cros_disks_client_->format_call_count());
 537   EXPECT_EQ("/device/source_path",
 538             fake_cros_disks_client_->last_format_device_path());
 539   EXPECT_EQ("vfat", fake_cros_disks_client_->last_format_filesystem());
 540
 541   // The device should be unmounted by now.
 542   EXPECT_FALSE(HasMountPoint("/device/mount_path"));
 543
 544   // Simulate cros_disks reporting success.
 545   fake_cros_disks_client_->SendFormatCompletedEvent(
 546       chromeos::FORMAT_ERROR_NONE, "/device/source_path");
 547
 548   // Simulate the device remounting.
 549   fake_cros_disks_client_->SendMountCompletedEvent(
 550       chromeos::MOUNT_ERROR_NONE,
 551       "/device/source_path",
 552       chromeos::MOUNT_TYPE_DEVICE,
 553       "/device/mount_path");
 554
 555   EXPECT_TRUE(HasMountPoint("/device/mount_path"));
 556
 557   // Try formatting again.
 558   DiskMountManager::GetInstance()->FormatMountedDevice("/device/mount_path");
 559
 560   // Wait for Unmount and Format calls to end.
 561   message_loop_.RunUntilIdle();
 562
 563   EXPECT_EQ(2, fake_cros_disks_client_->unmount_call_count());
 564   EXPECT_EQ("/device/mount_path",
 565             fake_cros_disks_client_->last_unmount_device_path());
 566   EXPECT_EQ(chromeos::UNMOUNT_OPTIONS_NONE,
 567             fake_cros_disks_client_->last_unmount_options());
 568   EXPECT_EQ(2, fake_cros_disks_client_->format_call_count());
 569   EXPECT_EQ("/device/source_path",
 570             fake_cros_disks_client_->last_format_device_path());
 571   EXPECT_EQ("vfat", fake_cros_disks_client_->last_format_filesystem());
 572
 573   // Simulate cros_disks reporting success.
 574   fake_cros_disks_client_->SendFormatCompletedEvent(
 575       chromeos::FORMAT_ERROR_NONE, "/device/source_path");
 576 }
 577
 578 }  // namespace