components/storage_monitor/storage_monitor_win_unittest.cc

   1 // Copyright 2014 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 <windows.h>
   6 #include <dbt.h>
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/memory/ref_counted.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/run_loop.h"
  14 #include "base/strings/utf_string_conversions.h"
  15 #include "base/synchronization/waitable_event.h"
  16 #include "components/storage_monitor/mock_removable_storage_observer.h"
  17 #include "components/storage_monitor/portable_device_watcher_win.h"
  18 #include "components/storage_monitor/removable_device_constants.h"
  19 #include "components/storage_monitor/storage_info.h"
  20 #include "components/storage_monitor/storage_monitor_win.h"
  21 #include "components/storage_monitor/test_portable_device_watcher_win.h"
  22 #include "components/storage_monitor/test_storage_monitor.h"
  23 #include "components/storage_monitor/test_storage_monitor_win.h"
  24 #include "components/storage_monitor/test_volume_mount_watcher_win.h"
  25 #include "components/storage_monitor/volume_mount_watcher_win.h"
  26 #include "content/public/browser/browser_thread.h"
  27 #include "content/public/test/test_browser_thread_bundle.h"
  28 #include "testing/gtest/include/gtest/gtest.h"
  29
  30 using base::ASCIIToUTF16;
  31 using content::BrowserThread;
  32
  33 typedef std::vector<int> DeviceIndices;
  34
  35 // StorageMonitorWinTest -------------------------------------------------------
  36
  37 namespace storage_monitor {
  38
  39 class StorageMonitorWinTest : public testing::Test {
  40  public:
  41   StorageMonitorWinTest();
  42   ~StorageMonitorWinTest() override;
  43
  44  protected:
  45   // testing::Test:
  46   void SetUp() override;
  47   void TearDown() override;
  48
  49   void PreAttachDevices();
  50
  51   // Runs all the pending tasks on UI thread, FILE thread and blocking thread.
  52   void RunUntilIdle();
  53
  54   void DoMassStorageDeviceAttachedTest(const DeviceIndices& device_indices);
  55   void DoMassStorageDevicesDetachedTest(const DeviceIndices& device_indices);
  56
  57   // Injects a device attach or detach change (depending on the value of
  58   // |test_attach|) and tests that the appropriate handler is called.
  59   void DoMTPDeviceTest(const base::string16& pnp_device_id, bool test_attach);
  60
  61   // Gets the MTP details of the storage specified by the |storage_device_id|.
  62   // On success, returns true and fills in |pnp_device_id| and
  63   // |storage_object_id|.
  64   bool GetMTPStorageInfo(const std::string& storage_device_id,
  65                          base::string16* pnp_device_id,
  66                          base::string16* storage_object_id);
  67
  68   scoped_ptr<TestStorageMonitorWin> monitor_;
  69
  70   // Weak pointer; owned by the device notifications class.
  71   TestVolumeMountWatcherWin* volume_mount_watcher_;
  72
  73   MockRemovableStorageObserver observer_;
  74
  75  private:
  76   content::TestBrowserThreadBundle thread_bundle_;
  77
  78   DISALLOW_COPY_AND_ASSIGN(StorageMonitorWinTest);
  79 };
  80
  81 StorageMonitorWinTest::StorageMonitorWinTest() {
  82 }
  83
  84 StorageMonitorWinTest::~StorageMonitorWinTest() {
  85 }
  86
  87 void StorageMonitorWinTest::SetUp() {
  88   volume_mount_watcher_ = new TestVolumeMountWatcherWin;
  89   monitor_.reset(new TestStorageMonitorWin(volume_mount_watcher_,
  90                                            new TestPortableDeviceWatcherWin));
  91
  92   monitor_->Init();
  93   RunUntilIdle();
  94   monitor_->AddObserver(&observer_);
  95 }
  96
  97 void StorageMonitorWinTest::TearDown() {
  98   RunUntilIdle();
  99   monitor_->RemoveObserver(&observer_);
 100
 101   // Windows storage monitor must be destroyed on the same thread
 102   // as construction.
 103   monitor_.reset();
 104 }
 105
 106 void StorageMonitorWinTest::PreAttachDevices() {
 107   monitor_.reset();
 108   volume_mount_watcher_ = new TestVolumeMountWatcherWin;
 109   volume_mount_watcher_->SetAttachedDevicesFake();
 110
 111   int expect_attach_calls = 0;
 112   std::vector<base::FilePath> initial_devices =
 113       volume_mount_watcher_->GetAttachedDevicesCallback().Run();
 114   for (std::vector<base::FilePath>::const_iterator it = initial_devices.begin();
 115        it != initial_devices.end(); ++it) {
 116     bool removable;
 117     ASSERT_TRUE(volume_mount_watcher_->GetDeviceRemovable(*it, &removable));
 118     if (removable)
 119       expect_attach_calls++;
 120   }
 121
 122   monitor_.reset(new TestStorageMonitorWin(volume_mount_watcher_,
 123                                            new TestPortableDeviceWatcherWin));
 124
 125   monitor_->AddObserver(&observer_);
 126   monitor_->Init();
 127
 128   EXPECT_EQ(0u, volume_mount_watcher_->devices_checked().size());
 129
 130   // This dance is because attachment bounces through a couple of
 131   // closures, which need to be executed to finish the process.
 132   RunUntilIdle();
 133   volume_mount_watcher_->FlushWorkerPoolForTesting();
 134   RunUntilIdle();
 135
 136   std::vector<base::FilePath> checked_devices =
 137       volume_mount_watcher_->devices_checked();
 138   sort(checked_devices.begin(), checked_devices.end());
 139   EXPECT_EQ(initial_devices, checked_devices);
 140   EXPECT_EQ(expect_attach_calls, observer_.attach_calls());
 141   EXPECT_EQ(0, observer_.detach_calls());
 142 }
 143
 144 void StorageMonitorWinTest::RunUntilIdle() {
 145   volume_mount_watcher_->FlushWorkerPoolForTesting();
 146   base::RunLoop().RunUntilIdle();
 147 }
 148
 149 void StorageMonitorWinTest::DoMassStorageDeviceAttachedTest(
 150     const DeviceIndices& device_indices) {
 151   DEV_BROADCAST_VOLUME volume_broadcast;
 152   volume_broadcast.dbcv_size = sizeof(volume_broadcast);
 153   volume_broadcast.dbcv_devicetype = DBT_DEVTYP_VOLUME;
 154   volume_broadcast.dbcv_unitmask = 0x0;
 155   volume_broadcast.dbcv_flags = 0x0;
 156
 157   int expect_attach_calls = observer_.attach_calls();
 158   for (DeviceIndices::const_iterator it = device_indices.begin();
 159        it != device_indices.end(); ++it) {
 160     volume_broadcast.dbcv_unitmask |= 0x1 << *it;
 161     bool removable;
 162     ASSERT_TRUE(volume_mount_watcher_->GetDeviceRemovable(
 163         VolumeMountWatcherWin::DriveNumberToFilePath(*it), &removable));
 164     if (removable)
 165       expect_attach_calls++;
 166   }
 167   monitor_->InjectDeviceChange(DBT_DEVICEARRIVAL,
 168                                reinterpret_cast<DWORD>(&volume_broadcast));
 169
 170   RunUntilIdle();
 171   volume_mount_watcher_->FlushWorkerPoolForTesting();
 172   RunUntilIdle();
 173
 174   EXPECT_EQ(expect_attach_calls, observer_.attach_calls());
 175   EXPECT_EQ(0, observer_.detach_calls());
 176 }
 177
 178 void StorageMonitorWinTest::DoMassStorageDevicesDetachedTest(
 179     const DeviceIndices& device_indices) {
 180   DEV_BROADCAST_VOLUME volume_broadcast;
 181   volume_broadcast.dbcv_size = sizeof(volume_broadcast);
 182   volume_broadcast.dbcv_devicetype = DBT_DEVTYP_VOLUME;
 183   volume_broadcast.dbcv_unitmask = 0x0;
 184   volume_broadcast.dbcv_flags = 0x0;
 185
 186   int pre_attach_calls = observer_.attach_calls();
 187   int expect_detach_calls = 0;
 188   for (DeviceIndices::const_iterator it = device_indices.begin();
 189        it != device_indices.end(); ++it) {
 190     volume_broadcast.dbcv_unitmask |= 0x1 << *it;
 191     StorageInfo info;
 192     ASSERT_TRUE(volume_mount_watcher_->GetDeviceInfo(
 193         VolumeMountWatcherWin::DriveNumberToFilePath(*it), &info));
 194     if (StorageInfo::IsRemovableDevice(info.device_id()))
 195       ++expect_detach_calls;
 196   }
 197   monitor_->InjectDeviceChange(DBT_DEVICEREMOVECOMPLETE,
 198                                reinterpret_cast<DWORD>(&volume_broadcast));
 199   RunUntilIdle();
 200   EXPECT_EQ(pre_attach_calls, observer_.attach_calls());
 201   EXPECT_EQ(expect_detach_calls, observer_.detach_calls());
 202 }
 203
 204 void StorageMonitorWinTest::DoMTPDeviceTest(const base::string16& pnp_device_id,
 205                                             bool test_attach) {
 206   GUID guidDevInterface = GUID_NULL;
 207   HRESULT hr = CLSIDFromString(kWPDDevInterfaceGUID, &guidDevInterface);
 208   if (FAILED(hr))
 209     return;
 210
 211   size_t device_id_size = pnp_device_id.size() * sizeof(base::char16);
 212   size_t size = sizeof(DEV_BROADCAST_DEVICEINTERFACE) + device_id_size;
 213   scoped_ptr<DEV_BROADCAST_DEVICEINTERFACE, base::FreeDeleter>
 214       dev_interface_broadcast(
 215           static_cast<DEV_BROADCAST_DEVICEINTERFACE*>(malloc(size)));
 216   DCHECK(dev_interface_broadcast.get());
 217   ZeroMemory(dev_interface_broadcast.get(), size);
 218   dev_interface_broadcast->dbcc_size = size;
 219   dev_interface_broadcast->dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
 220   dev_interface_broadcast->dbcc_classguid = guidDevInterface;
 221   memcpy(dev_interface_broadcast->dbcc_name, pnp_device_id.data(),
 222          device_id_size);
 223
 224   int expect_attach_calls = observer_.attach_calls();
 225   int expect_detach_calls = observer_.detach_calls();
 226   PortableDeviceWatcherWin::StorageObjectIDs storage_object_ids =
 227       TestPortableDeviceWatcherWin::GetMTPStorageObjectIds(pnp_device_id);
 228   for (PortableDeviceWatcherWin::StorageObjectIDs::const_iterator it =
 229        storage_object_ids.begin(); it != storage_object_ids.end(); ++it) {
 230     std::string unique_id;
 231     base::string16 name;
 232     base::string16 location;
 233     TestPortableDeviceWatcherWin::GetMTPStorageDetails(pnp_device_id, *it,
 234                                                        &location, &unique_id,
 235                                                        &name);
 236     if (test_attach && !name.empty() && !unique_id.empty())
 237       expect_attach_calls++;
 238     else if (!name.empty() && !unique_id.empty())
 239       expect_detach_calls++;
 240   }
 241
 242   monitor_->InjectDeviceChange(
 243       test_attach ? DBT_DEVICEARRIVAL : DBT_DEVICEREMOVECOMPLETE,
 244       reinterpret_cast<DWORD>(dev_interface_broadcast.get()));
 245
 246   RunUntilIdle();
 247   EXPECT_EQ(expect_attach_calls, observer_.attach_calls());
 248   EXPECT_EQ(expect_detach_calls, observer_.detach_calls());
 249 }
 250
 251 bool StorageMonitorWinTest::GetMTPStorageInfo(
 252     const std::string& storage_device_id,
 253     base::string16* pnp_device_id,
 254     base::string16* storage_object_id) {
 255   return monitor_->GetMTPStorageInfoFromDeviceId(storage_device_id,
 256                                                  pnp_device_id,
 257                                                  storage_object_id);
 258 }
 259
 260 TEST_F(StorageMonitorWinTest, RandomMessage) {
 261   monitor_->InjectDeviceChange(DBT_DEVICEQUERYREMOVE, NULL);
 262   RunUntilIdle();
 263 }
 264
 265 TEST_F(StorageMonitorWinTest, DevicesAttached) {
 266   DeviceIndices device_indices;
 267   device_indices.push_back(1);  // B
 268   device_indices.push_back(5);  // F
 269   device_indices.push_back(7);  // H
 270   device_indices.push_back(13);  // N
 271   DoMassStorageDeviceAttachedTest(device_indices);
 272
 273   StorageInfo info;
 274   EXPECT_TRUE(monitor_->volume_mount_watcher()->GetDeviceInfo(
 275       base::FilePath(ASCIIToUTF16("F:\\")), &info));
 276   EXPECT_EQ(ASCIIToUTF16("F:\\"), info.location());
 277   EXPECT_EQ("dcim:\\\\?\\Volume{F0000000-0000-0000-0000-000000000000}\\",
 278             info.device_id());
 279   EXPECT_EQ(ASCIIToUTF16("F:\\ Drive"), info.storage_label());
 280
 281   EXPECT_FALSE(monitor_->GetStorageInfoForPath(
 282       base::FilePath(ASCIIToUTF16("G:\\")), &info));
 283   EXPECT_TRUE(monitor_->GetStorageInfoForPath(
 284       base::FilePath(ASCIIToUTF16("F:\\")), &info));
 285   StorageInfo info1;
 286   EXPECT_TRUE(monitor_->GetStorageInfoForPath(
 287       base::FilePath(ASCIIToUTF16("F:\\subdir")), &info1));
 288   StorageInfo info2;
 289   EXPECT_TRUE(monitor_->GetStorageInfoForPath(
 290       base::FilePath(ASCIIToUTF16("F:\\subdir\\sub")), &info2));
 291   EXPECT_EQ(ASCIIToUTF16("F:\\ Drive"), info.storage_label());
 292   EXPECT_EQ(ASCIIToUTF16("F:\\ Drive"), info1.storage_label());
 293   EXPECT_EQ(ASCIIToUTF16("F:\\ Drive"), info2.storage_label());
 294 }
 295
 296 TEST_F(StorageMonitorWinTest, PathMountDevices) {
 297   PreAttachDevices();
 298   int init_storages = monitor_->GetAllAvailableStorages().size();
 299
 300   volume_mount_watcher_->AddDeviceForTesting(
 301       base::FilePath(FILE_PATH_LITERAL("F:\\mount1")),
 302       "dcim:mount1", L"mount1", 100);
 303   volume_mount_watcher_->AddDeviceForTesting(
 304       base::FilePath(FILE_PATH_LITERAL("F:\\mount1\\subdir")),
 305       "dcim:mount1subdir", L"mount1subdir", 100);
 306   volume_mount_watcher_->AddDeviceForTesting(
 307       base::FilePath(FILE_PATH_LITERAL("F:\\mount2")),
 308       "dcim:mount2", L"mount2", 100);
 309   RunUntilIdle();
 310   EXPECT_EQ(init_storages + 3, monitor_->GetAllAvailableStorages().size());
 311
 312   StorageInfo info;
 313   EXPECT_TRUE(monitor_->GetStorageInfoForPath(
 314       base::FilePath(ASCIIToUTF16("F:\\dir")), &info));
 315   EXPECT_EQ(L"F:\\ Drive", info.GetDisplayName(false));
 316   EXPECT_TRUE(monitor_->GetStorageInfoForPath(
 317       base::FilePath(ASCIIToUTF16("F:\\mount1")), &info));
 318   EXPECT_EQ(L"mount1", info.GetDisplayName(false));
 319   EXPECT_TRUE(monitor_->GetStorageInfoForPath(
 320       base::FilePath(ASCIIToUTF16("F:\\mount1\\dir")), &info));
 321   EXPECT_EQ(L"mount1", info.GetDisplayName(false));
 322   EXPECT_TRUE(monitor_->GetStorageInfoForPath(
 323       base::FilePath(ASCIIToUTF16("F:\\mount2\\dir")), &info));
 324   EXPECT_EQ(L"mount2", info.GetDisplayName(false));
 325   EXPECT_TRUE(monitor_->GetStorageInfoForPath(
 326       base::FilePath(ASCIIToUTF16("F:\\mount1\\subdir")), &info));
 327   EXPECT_EQ(L"mount1subdir", info.GetDisplayName(false));
 328   EXPECT_TRUE(monitor_->GetStorageInfoForPath(
 329       base::FilePath(ASCIIToUTF16("F:\\mount1\\subdir\\dir")), &info));
 330   EXPECT_EQ(L"mount1subdir", info.GetDisplayName(false));
 331   EXPECT_TRUE(monitor_->GetStorageInfoForPath(
 332       base::FilePath(ASCIIToUTF16("F:\\mount1\\subdir\\dir\\dir")), &info));
 333   EXPECT_EQ(L"mount1subdir", info.GetDisplayName(false));
 334 }
 335
 336 TEST_F(StorageMonitorWinTest, DevicesAttachedHighBoundary) {
 337   DeviceIndices device_indices;
 338   device_indices.push_back(25);
 339
 340   DoMassStorageDeviceAttachedTest(device_indices);
 341 }
 342
 343 TEST_F(StorageMonitorWinTest, DevicesAttachedLowBoundary) {
 344   DeviceIndices device_indices;
 345   device_indices.push_back(0);
 346
 347   DoMassStorageDeviceAttachedTest(device_indices);
 348 }
 349
 350 TEST_F(StorageMonitorWinTest, DevicesAttachedAdjacentBits) {
 351   DeviceIndices device_indices;
 352   device_indices.push_back(0);
 353   device_indices.push_back(1);
 354   device_indices.push_back(2);
 355   device_indices.push_back(3);
 356
 357   DoMassStorageDeviceAttachedTest(device_indices);
 358 }
 359
 360 TEST_F(StorageMonitorWinTest, DevicesDetached) {
 361   PreAttachDevices();
 362
 363   DeviceIndices device_indices;
 364   device_indices.push_back(1);
 365   device_indices.push_back(5);
 366   device_indices.push_back(7);
 367   device_indices.push_back(13);
 368
 369   DoMassStorageDevicesDetachedTest(device_indices);
 370 }
 371
 372 TEST_F(StorageMonitorWinTest, DevicesDetachedHighBoundary) {
 373   PreAttachDevices();
 374
 375   DeviceIndices device_indices;
 376   device_indices.push_back(25);
 377
 378   DoMassStorageDevicesDetachedTest(device_indices);
 379 }
 380
 381 TEST_F(StorageMonitorWinTest, DevicesDetachedLowBoundary) {
 382   PreAttachDevices();
 383
 384   DeviceIndices device_indices;
 385   device_indices.push_back(0);
 386
 387   DoMassStorageDevicesDetachedTest(device_indices);
 388 }
 389
 390 TEST_F(StorageMonitorWinTest, DevicesDetachedAdjacentBits) {
 391   PreAttachDevices();
 392
 393   DeviceIndices device_indices;
 394   device_indices.push_back(0);
 395   device_indices.push_back(1);
 396   device_indices.push_back(2);
 397   device_indices.push_back(3);
 398
 399   DoMassStorageDevicesDetachedTest(device_indices);
 400 }
 401
 402 TEST_F(StorageMonitorWinTest, DuplicateAttachCheckSuppressed) {
 403   // Make sure the original C: mount notification makes it all the
 404   // way through.
 405   RunUntilIdle();
 406   volume_mount_watcher_->FlushWorkerPoolForTesting();
 407   RunUntilIdle();
 408
 409   volume_mount_watcher_->BlockDeviceCheckForTesting();
 410   base::FilePath kAttachedDevicePath =
 411       VolumeMountWatcherWin::DriveNumberToFilePath(8);  // I:
 412
 413   DEV_BROADCAST_VOLUME volume_broadcast;
 414   volume_broadcast.dbcv_size = sizeof(volume_broadcast);
 415   volume_broadcast.dbcv_devicetype = DBT_DEVTYP_VOLUME;
 416   volume_broadcast.dbcv_flags = 0x0;
 417   volume_broadcast.dbcv_unitmask = 0x100;  // I: drive
 418   monitor_->InjectDeviceChange(DBT_DEVICEARRIVAL,
 419                                reinterpret_cast<DWORD>(&volume_broadcast));
 420
 421   EXPECT_EQ(0u, volume_mount_watcher_->devices_checked().size());
 422
 423   // Re-attach the same volume. We haven't released the mock device check
 424   // event, so there'll be pending calls in the UI thread to finish the
 425   // device check notification, blocking the duplicate device injection.
 426   monitor_->InjectDeviceChange(DBT_DEVICEARRIVAL,
 427                                reinterpret_cast<DWORD>(&volume_broadcast));
 428
 429   EXPECT_EQ(0u, volume_mount_watcher_->devices_checked().size());
 430   volume_mount_watcher_->ReleaseDeviceCheck();
 431   RunUntilIdle();
 432   volume_mount_watcher_->ReleaseDeviceCheck();
 433
 434   // Now let all attach notifications finish running. We'll only get one
 435   // finish-attach call.
 436   volume_mount_watcher_->FlushWorkerPoolForTesting();
 437   RunUntilIdle();
 438
 439   const std::vector<base::FilePath>& checked_devices =
 440       volume_mount_watcher_->devices_checked();
 441   ASSERT_EQ(1u, checked_devices.size());
 442   EXPECT_EQ(kAttachedDevicePath, checked_devices[0]);
 443
 444   // We'll receive a duplicate check now that the first check has fully cleared.
 445   monitor_->InjectDeviceChange(DBT_DEVICEARRIVAL,
 446                                reinterpret_cast<DWORD>(&volume_broadcast));
 447   volume_mount_watcher_->FlushWorkerPoolForTesting();
 448   volume_mount_watcher_->ReleaseDeviceCheck();
 449   RunUntilIdle();
 450
 451   ASSERT_EQ(2u, checked_devices.size());
 452   EXPECT_EQ(kAttachedDevicePath, checked_devices[0]);
 453   EXPECT_EQ(kAttachedDevicePath, checked_devices[1]);
 454 }
 455
 456 TEST_F(StorageMonitorWinTest, DeviceInfoForPath) {
 457   PreAttachDevices();
 458
 459   StorageInfo device_info;
 460   // An invalid path.
 461   EXPECT_FALSE(monitor_->GetStorageInfoForPath(base::FilePath(L"COM1:\\"),
 462                                                &device_info));
 463
 464   // An unconnected removable device.
 465   EXPECT_FALSE(monitor_->GetStorageInfoForPath(base::FilePath(L"E:\\"),
 466                                                &device_info));
 467
 468   // A connected removable device.
 469   base::FilePath removable_device(L"F:\\");
 470   EXPECT_TRUE(monitor_->GetStorageInfoForPath(removable_device, &device_info));
 471
 472   StorageInfo info;
 473   ASSERT_TRUE(volume_mount_watcher_->GetDeviceInfo(removable_device, &info));
 474   EXPECT_TRUE(StorageInfo::IsRemovableDevice(info.device_id()));
 475   EXPECT_EQ(info.device_id(), device_info.device_id());
 476   EXPECT_EQ(info.GetDisplayName(false), device_info.GetDisplayName(false));
 477   EXPECT_EQ(info.location(), device_info.location());
 478   EXPECT_EQ(1000000, info.total_size_in_bytes());
 479
 480   // A fixed device.
 481   base::FilePath fixed_device(L"N:\\");
 482   EXPECT_TRUE(monitor_->GetStorageInfoForPath(fixed_device, &device_info));
 483
 484   ASSERT_TRUE(volume_mount_watcher_->GetDeviceInfo(
 485       fixed_device, &info));
 486   EXPECT_FALSE(StorageInfo::IsRemovableDevice(info.device_id()));
 487   EXPECT_EQ(info.device_id(), device_info.device_id());
 488   EXPECT_EQ(info.GetDisplayName(false), device_info.GetDisplayName(false));
 489   EXPECT_EQ(info.location(), device_info.location());
 490 }
 491
 492 // Test to verify basic MTP storage attach and detach notifications.
 493 TEST_F(StorageMonitorWinTest, MTPDeviceBasicAttachDetach) {
 494   DoMTPDeviceTest(TestPortableDeviceWatcherWin::kMTPDeviceWithValidInfo, true);
 495   DoMTPDeviceTest(TestPortableDeviceWatcherWin::kMTPDeviceWithValidInfo, false);
 496 }
 497
 498 // When a MTP storage device with invalid storage label and id is
 499 // attached/detached, there should not be any device attach/detach
 500 // notifications.
 501 TEST_F(StorageMonitorWinTest, MTPDeviceWithInvalidInfo) {
 502   DoMTPDeviceTest(TestPortableDeviceWatcherWin::kMTPDeviceWithInvalidInfo,
 503                   true);
 504   DoMTPDeviceTest(TestPortableDeviceWatcherWin::kMTPDeviceWithInvalidInfo,
 505                   false);
 506 }
 507
 508 // Attach a device with two data partitions. Verify that attach/detach
 509 // notifications are sent out for each removable storage.
 510 TEST_F(StorageMonitorWinTest, MTPDeviceWithMultipleStorageObjects) {
 511   DoMTPDeviceTest(TestPortableDeviceWatcherWin::kMTPDeviceWithMultipleStorages,
 512                   true);
 513   DoMTPDeviceTest(TestPortableDeviceWatcherWin::kMTPDeviceWithMultipleStorages,
 514                   false);
 515 }
 516
 517 TEST_F(StorageMonitorWinTest, DriveNumberToFilePath) {
 518   EXPECT_EQ(L"A:\\", VolumeMountWatcherWin::DriveNumberToFilePath(0).value());
 519   EXPECT_EQ(L"Y:\\", VolumeMountWatcherWin::DriveNumberToFilePath(24).value());
 520   EXPECT_EQ(L"", VolumeMountWatcherWin::DriveNumberToFilePath(-1).value());
 521   EXPECT_EQ(L"", VolumeMountWatcherWin::DriveNumberToFilePath(199).value());
 522 }
 523
 524 // Given a MTP storage persistent id, GetMTPStorageInfo() should fetch the
 525 // device interface path and local storage object identifier.
 526 TEST_F(StorageMonitorWinTest, GetMTPStorageInfoFromDeviceId) {
 527   DoMTPDeviceTest(TestPortableDeviceWatcherWin::kMTPDeviceWithValidInfo, true);
 528   PortableDeviceWatcherWin::StorageObjects storage_objects =
 529       TestPortableDeviceWatcherWin::GetDeviceStorageObjects(
 530           TestPortableDeviceWatcherWin::kMTPDeviceWithValidInfo);
 531   for (PortableDeviceWatcherWin::StorageObjects::const_iterator it =
 532            storage_objects.begin();
 533        it != storage_objects.end(); ++it) {
 534     base::string16 pnp_device_id;
 535     base::string16 storage_object_id;
 536     ASSERT_TRUE(GetMTPStorageInfo(it->object_persistent_id, &pnp_device_id,
 537                                   &storage_object_id));
 538     base::string16 expected(
 539         TestPortableDeviceWatcherWin::kMTPDeviceWithValidInfo);
 540     EXPECT_EQ(expected, pnp_device_id);
 541     EXPECT_EQ(it->object_persistent_id,
 542               TestPortableDeviceWatcherWin::GetMTPStorageUniqueId(
 543                   pnp_device_id, storage_object_id));
 544   }
 545   DoMTPDeviceTest(TestPortableDeviceWatcherWin::kMTPDeviceWithValidInfo, false);
 546 }
 547
 548 }  // namespace storage_monitor