chrome/browser/chromeos/drive/resource_metadata_storage_unittest.cc

   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 "chrome/browser/chromeos/drive/resource_metadata_storage.h"
   6
   7 #include <algorithm>
   8
   9 #include "base/files/file_util.h"
  10 #include "base/files/scoped_temp_dir.h"
  11 #include "base/strings/string_split.h"
  12 #include "chrome/browser/chromeos/drive/drive.pb.h"
  13 #include "chrome/browser/chromeos/drive/test_util.h"
  14 #include "content/public/test/test_browser_thread_bundle.h"
  15 #include "testing/gtest/include/gtest/gtest.h"
  16 #include "third_party/leveldatabase/src/include/leveldb/db.h"
  17 #include "third_party/leveldatabase/src/include/leveldb/write_batch.h"
  18
  19 namespace drive {
  20 namespace internal {
  21
  22 class ResourceMetadataStorageTest : public testing::Test {
  23  protected:
  24   void SetUp() override {
  25     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
  26
  27     storage_.reset(new ResourceMetadataStorage(
  28         temp_dir_.path(), base::MessageLoopProxy::current().get()));
  29     ASSERT_TRUE(storage_->Initialize());
  30   }
  31
  32   // Overwrites |storage_|'s version.
  33   void SetDBVersion(int version) {
  34     ResourceMetadataHeader header;
  35     ASSERT_EQ(FILE_ERROR_OK, storage_->GetHeader(&header));
  36     header.set_version(version);
  37     EXPECT_EQ(FILE_ERROR_OK, storage_->PutHeader(header));
  38   }
  39
  40   bool CheckValidity() {
  41     return storage_->CheckValidity();
  42   }
  43
  44   leveldb::DB* resource_map() { return storage_->resource_map_.get(); }
  45
  46   // Puts a child entry.
  47   void PutChild(const std::string& parent_id,
  48                 const std::string& child_base_name,
  49                 const std::string& child_id) {
  50     storage_->resource_map_->Put(
  51         leveldb::WriteOptions(),
  52         ResourceMetadataStorage::GetChildEntryKey(parent_id, child_base_name),
  53         child_id);
  54   }
  55
  56   // Removes a child entry.
  57   void RemoveChild(const std::string& parent_id,
  58                    const std::string& child_base_name) {
  59     storage_->resource_map_->Delete(
  60         leveldb::WriteOptions(),
  61         ResourceMetadataStorage::GetChildEntryKey(parent_id, child_base_name));
  62   }
  63
  64   content::TestBrowserThreadBundle thread_bundle_;
  65   base::ScopedTempDir temp_dir_;
  66   scoped_ptr<ResourceMetadataStorage,
  67              test_util::DestroyHelperForTests> storage_;
  68 };
  69
  70 TEST_F(ResourceMetadataStorageTest, LargestChangestamp) {
  71   const int64 kLargestChangestamp = 1234567890;
  72   EXPECT_EQ(FILE_ERROR_OK,
  73             storage_->SetLargestChangestamp(kLargestChangestamp));
  74   int64 value = 0;
  75   EXPECT_EQ(FILE_ERROR_OK, storage_->GetLargestChangestamp(&value));
  76   EXPECT_EQ(kLargestChangestamp, value);
  77 }
  78
  79 TEST_F(ResourceMetadataStorageTest, PutEntry) {
  80   const std::string key1 = "abcdefg";
  81   const std::string key2 = "abcd";
  82   const std::string key3 = "efgh";
  83   const std::string name2 = "ABCD";
  84   const std::string name3 = "EFGH";
  85
  86   // key1 not found.
  87   ResourceEntry result;
  88   EXPECT_EQ(FILE_ERROR_NOT_FOUND, storage_->GetEntry(key1, &result));
  89
  90   // Put entry1.
  91   ResourceEntry entry1;
  92   entry1.set_local_id(key1);
  93   EXPECT_EQ(FILE_ERROR_OK, storage_->PutEntry(entry1));
  94
  95   // key1 found.
  96   EXPECT_EQ(FILE_ERROR_OK, storage_->GetEntry(key1, &result));
  97
  98   // key2 not found.
  99   EXPECT_EQ(FILE_ERROR_NOT_FOUND, storage_->GetEntry(key2, &result));
 100
 101   // Put entry2 as a child of entry1.
 102   ResourceEntry entry2;
 103   entry2.set_local_id(key2);
 104   entry2.set_parent_local_id(key1);
 105   entry2.set_base_name(name2);
 106   EXPECT_EQ(FILE_ERROR_OK, storage_->PutEntry(entry2));
 107
 108   // key2 found.
 109   std::string child_id;
 110   EXPECT_EQ(FILE_ERROR_OK, storage_->GetEntry(key2, &result));
 111   EXPECT_EQ(FILE_ERROR_OK, storage_->GetChild(key1, name2, &child_id));
 112   EXPECT_EQ(key2, child_id);
 113
 114   // Put entry3 as a child of entry2.
 115   ResourceEntry entry3;
 116   entry3.set_local_id(key3);
 117   entry3.set_parent_local_id(key2);
 118   entry3.set_base_name(name3);
 119   EXPECT_EQ(FILE_ERROR_OK, storage_->PutEntry(entry3));
 120
 121   // key3 found.
 122   EXPECT_EQ(FILE_ERROR_OK, storage_->GetEntry(key3, &result));
 123   EXPECT_EQ(FILE_ERROR_OK, storage_->GetChild(key2, name3, &child_id));
 124   EXPECT_EQ(key3, child_id);
 125
 126   // Change entry3's parent to entry1.
 127   entry3.set_parent_local_id(key1);
 128   EXPECT_EQ(FILE_ERROR_OK, storage_->PutEntry(entry3));
 129
 130   // entry3 is a child of entry1 now.
 131   EXPECT_EQ(FILE_ERROR_NOT_FOUND, storage_->GetChild(key2, name3, &child_id));
 132   EXPECT_EQ(FILE_ERROR_OK, storage_->GetChild(key1, name3, &child_id));
 133   EXPECT_EQ(key3, child_id);
 134
 135   // Remove entries.
 136   EXPECT_EQ(FILE_ERROR_OK, storage_->RemoveEntry(key3));
 137   EXPECT_EQ(FILE_ERROR_NOT_FOUND, storage_->GetEntry(key3, &result));
 138   EXPECT_EQ(FILE_ERROR_OK, storage_->RemoveEntry(key2));
 139   EXPECT_EQ(FILE_ERROR_NOT_FOUND, storage_->GetEntry(key2, &result));
 140   EXPECT_EQ(FILE_ERROR_OK, storage_->RemoveEntry(key1));
 141   EXPECT_EQ(FILE_ERROR_NOT_FOUND, storage_->GetEntry(key1, &result));
 142 }
 143
 144 TEST_F(ResourceMetadataStorageTest, Iterator) {
 145   // Prepare data.
 146   std::vector<std::string> keys;
 147
 148   keys.push_back("entry1");
 149   keys.push_back("entry2");
 150   keys.push_back("entry3");
 151   keys.push_back("entry4");
 152
 153   for (size_t i = 0; i < keys.size(); ++i) {
 154     ResourceEntry entry;
 155     entry.set_local_id(keys[i]);
 156     EXPECT_EQ(FILE_ERROR_OK, storage_->PutEntry(entry));
 157   }
 158
 159   // Iterate and check the result.
 160   std::map<std::string, ResourceEntry> found_entries;
 161   scoped_ptr<ResourceMetadataStorage::Iterator> it = storage_->GetIterator();
 162   ASSERT_TRUE(it);
 163   for (; !it->IsAtEnd(); it->Advance()) {
 164     const ResourceEntry& entry = it->GetValue();
 165     found_entries[it->GetID()] = entry;
 166   }
 167   EXPECT_FALSE(it->HasError());
 168
 169   EXPECT_EQ(keys.size(), found_entries.size());
 170   for (size_t i = 0; i < keys.size(); ++i)
 171     EXPECT_EQ(1U, found_entries.count(keys[i]));
 172 }
 173
 174 TEST_F(ResourceMetadataStorageTest, GetIdByResourceId) {
 175   const std::string local_id = "local_id";
 176   const std::string resource_id = "resource_id";
 177
 178   // Resource ID to local ID mapping is not stored yet.
 179   std::string id;
 180   EXPECT_EQ(FILE_ERROR_NOT_FOUND,
 181             storage_->GetIdByResourceId(resource_id, &id));
 182
 183   // Put an entry with the resource ID.
 184   ResourceEntry entry;
 185   entry.set_local_id(local_id);
 186   entry.set_resource_id(resource_id);
 187   EXPECT_EQ(FILE_ERROR_OK, storage_->PutEntry(entry));
 188
 189   // Can get local ID by resource ID.
 190   EXPECT_EQ(FILE_ERROR_OK, storage_->GetIdByResourceId(resource_id, &id));
 191   EXPECT_EQ(local_id, id);
 192
 193   // Resource ID to local ID mapping is removed.
 194   EXPECT_EQ(FILE_ERROR_OK, storage_->RemoveEntry(local_id));
 195   EXPECT_EQ(FILE_ERROR_NOT_FOUND,
 196             storage_->GetIdByResourceId(resource_id, &id));
 197 }
 198
 199 TEST_F(ResourceMetadataStorageTest, GetChildren) {
 200   const std::string parents_id[] = { "mercury", "venus", "mars", "jupiter",
 201                                      "saturn" };
 202   std::vector<base::StringPairs> children_name_id(arraysize(parents_id));
 203   // Skip children_name_id[0/1] here because Mercury and Venus have no moon.
 204   children_name_id[2].push_back(std::make_pair("phobos", "mars_i"));
 205   children_name_id[2].push_back(std::make_pair("deimos", "mars_ii"));
 206   children_name_id[3].push_back(std::make_pair("io", "jupiter_i"));
 207   children_name_id[3].push_back(std::make_pair("europa", "jupiter_ii"));
 208   children_name_id[3].push_back(std::make_pair("ganymede", "jupiter_iii"));
 209   children_name_id[3].push_back(std::make_pair("calisto", "jupiter_iv"));
 210   children_name_id[4].push_back(std::make_pair("mimas", "saturn_i"));
 211   children_name_id[4].push_back(std::make_pair("enceladus", "saturn_ii"));
 212   children_name_id[4].push_back(std::make_pair("tethys", "saturn_iii"));
 213   children_name_id[4].push_back(std::make_pair("dione", "saturn_iv"));
 214   children_name_id[4].push_back(std::make_pair("rhea", "saturn_v"));
 215   children_name_id[4].push_back(std::make_pair("titan", "saturn_vi"));
 216   children_name_id[4].push_back(std::make_pair("iapetus", "saturn_vii"));
 217
 218   // Put parents.
 219   for (size_t i = 0; i < arraysize(parents_id); ++i) {
 220     ResourceEntry entry;
 221     entry.set_local_id(parents_id[i]);
 222     EXPECT_EQ(FILE_ERROR_OK, storage_->PutEntry(entry));
 223   }
 224
 225   // Put children.
 226   for (size_t i = 0; i < children_name_id.size(); ++i) {
 227     for (size_t j = 0; j < children_name_id[i].size(); ++j) {
 228       ResourceEntry entry;
 229       entry.set_local_id(children_name_id[i][j].second);
 230       entry.set_parent_local_id(parents_id[i]);
 231       entry.set_base_name(children_name_id[i][j].first);
 232       EXPECT_EQ(FILE_ERROR_OK, storage_->PutEntry(entry));
 233     }
 234   }
 235
 236   // Try to get children.
 237   for (size_t i = 0; i < children_name_id.size(); ++i) {
 238     std::vector<std::string> children;
 239     storage_->GetChildren(parents_id[i], &children);
 240     EXPECT_EQ(children_name_id[i].size(), children.size());
 241     for (size_t j = 0; j < children_name_id[i].size(); ++j) {
 242       EXPECT_EQ(1, std::count(children.begin(),
 243                               children.end(),
 244                               children_name_id[i][j].second));
 245     }
 246   }
 247 }
 248
 249 TEST_F(ResourceMetadataStorageTest, OpenExistingDB) {
 250   const std::string parent_id1 = "abcdefg";
 251   const std::string child_name1 = "WXYZABC";
 252   const std::string child_id1 = "qwerty";
 253
 254   ResourceEntry entry1;
 255   entry1.set_local_id(parent_id1);
 256   ResourceEntry entry2;
 257   entry2.set_local_id(child_id1);
 258   entry2.set_parent_local_id(parent_id1);
 259   entry2.set_base_name(child_name1);
 260
 261   // Put some data.
 262   EXPECT_EQ(FILE_ERROR_OK, storage_->PutEntry(entry1));
 263   EXPECT_EQ(FILE_ERROR_OK, storage_->PutEntry(entry2));
 264
 265   // Close DB and reopen.
 266   storage_.reset(new ResourceMetadataStorage(
 267       temp_dir_.path(), base::MessageLoopProxy::current().get()));
 268   ASSERT_TRUE(storage_->Initialize());
 269
 270   // Can read data.
 271   ResourceEntry result;
 272   EXPECT_EQ(FILE_ERROR_OK, storage_->GetEntry(parent_id1, &result));
 273
 274   EXPECT_EQ(FILE_ERROR_OK, storage_->GetEntry(child_id1, &result));
 275   EXPECT_EQ(parent_id1, result.parent_local_id());
 276   EXPECT_EQ(child_name1, result.base_name());
 277
 278   std::string child_id;
 279   EXPECT_EQ(FILE_ERROR_OK,
 280             storage_->GetChild(parent_id1, child_name1, &child_id));
 281   EXPECT_EQ(child_id1, child_id);
 282 }
 283
 284 TEST_F(ResourceMetadataStorageTest, IncompatibleDB_M29) {
 285   const int64 kLargestChangestamp = 1234567890;
 286   const std::string title = "title";
 287
 288   // Construct M29 version DB.
 289   SetDBVersion(6);
 290   EXPECT_EQ(FILE_ERROR_OK,
 291             storage_->SetLargestChangestamp(kLargestChangestamp));
 292
 293   leveldb::WriteBatch batch;
 294
 295   // Put a file entry and its cache entry.
 296   ResourceEntry entry;
 297   std::string serialized_entry;
 298   entry.set_title(title);
 299   entry.set_resource_id("file:abcd");
 300   EXPECT_TRUE(entry.SerializeToString(&serialized_entry));
 301   batch.Put("file:abcd", serialized_entry);
 302
 303   FileCacheEntry cache_entry;
 304   EXPECT_TRUE(cache_entry.SerializeToString(&serialized_entry));
 305   batch.Put(std::string("file:abcd") + '\0' + "CACHE", serialized_entry);
 306
 307   EXPECT_TRUE(resource_map()->Write(leveldb::WriteOptions(), &batch).ok());
 308
 309   // Upgrade and reopen.
 310   storage_.reset();
 311   EXPECT_TRUE(ResourceMetadataStorage::UpgradeOldDB(temp_dir_.path()));
 312   storage_.reset(new ResourceMetadataStorage(
 313       temp_dir_.path(), base::MessageLoopProxy::current().get()));
 314   ASSERT_TRUE(storage_->Initialize());
 315
 316   // Resource-ID-to-local-ID mapping is added.
 317   std::string id;
 318   EXPECT_EQ(FILE_ERROR_OK,
 319             storage_->GetIdByResourceId("abcd", &id));  // "file:" is dropped.
 320
 321   // Data is erased, except cache entries.
 322   int64 largest_changestamp = 0;
 323   EXPECT_EQ(FILE_ERROR_OK,
 324             storage_->GetLargestChangestamp(&largest_changestamp));
 325   EXPECT_EQ(0, largest_changestamp);
 326   EXPECT_EQ(FILE_ERROR_OK, storage_->GetEntry(id, &entry));
 327   EXPECT_TRUE(entry.title().empty());
 328   EXPECT_TRUE(entry.file_specific_info().has_cache_state());
 329 }
 330
 331 TEST_F(ResourceMetadataStorageTest, IncompatibleDB_M32) {
 332   const int64 kLargestChangestamp = 1234567890;
 333   const std::string title = "title";
 334   const std::string resource_id = "abcd";
 335   const std::string local_id = "local-abcd";
 336
 337   // Construct M32 version DB.
 338   SetDBVersion(11);
 339   EXPECT_EQ(FILE_ERROR_OK,
 340             storage_->SetLargestChangestamp(kLargestChangestamp));
 341
 342   leveldb::WriteBatch batch;
 343
 344   // Put a file entry and its cache and id entry.
 345   ResourceEntry entry;
 346   std::string serialized_entry;
 347   entry.set_title(title);
 348   entry.set_local_id(local_id);
 349   entry.set_resource_id(resource_id);
 350   EXPECT_TRUE(entry.SerializeToString(&serialized_entry));
 351   batch.Put(local_id, serialized_entry);
 352
 353   FileCacheEntry cache_entry;
 354   EXPECT_TRUE(cache_entry.SerializeToString(&serialized_entry));
 355   batch.Put(local_id + '\0' + "CACHE", serialized_entry);
 356
 357   batch.Put('\0' + std::string("ID") + '\0' + resource_id, local_id);
 358
 359   EXPECT_TRUE(resource_map()->Write(leveldb::WriteOptions(), &batch).ok());
 360
 361   // Upgrade and reopen.
 362   storage_.reset();
 363   EXPECT_TRUE(ResourceMetadataStorage::UpgradeOldDB(temp_dir_.path()));
 364   storage_.reset(new ResourceMetadataStorage(
 365       temp_dir_.path(), base::MessageLoopProxy::current().get()));
 366   ASSERT_TRUE(storage_->Initialize());
 367
 368   // Data is erased, except cache and id mapping entries.
 369   std::string id;
 370   EXPECT_EQ(FILE_ERROR_OK, storage_->GetIdByResourceId(resource_id, &id));
 371   EXPECT_EQ(local_id, id);
 372   int64 largest_changestamp = 0;
 373   EXPECT_EQ(FILE_ERROR_OK,
 374             storage_->GetLargestChangestamp(&largest_changestamp));
 375   EXPECT_EQ(0, largest_changestamp);
 376   EXPECT_EQ(FILE_ERROR_OK, storage_->GetEntry(id, &entry));
 377   EXPECT_TRUE(entry.title().empty());
 378   EXPECT_TRUE(entry.file_specific_info().has_cache_state());
 379 }
 380
 381 TEST_F(ResourceMetadataStorageTest, IncompatibleDB_M33) {
 382   const int64 kLargestChangestamp = 1234567890;
 383   const std::string title = "title";
 384   const std::string resource_id = "abcd";
 385   const std::string local_id = "local-abcd";
 386   const std::string md5 = "md5";
 387   const std::string resource_id2 = "efgh";
 388   const std::string local_id2 = "local-efgh";
 389   const std::string md5_2 = "md5_2";
 390
 391   // Construct M33 version DB.
 392   SetDBVersion(12);
 393   EXPECT_EQ(FILE_ERROR_OK,
 394             storage_->SetLargestChangestamp(kLargestChangestamp));
 395
 396   leveldb::WriteBatch batch;
 397
 398   // Put a file entry and its cache and id entry.
 399   ResourceEntry entry;
 400   std::string serialized_entry;
 401   entry.set_title(title);
 402   entry.set_local_id(local_id);
 403   entry.set_resource_id(resource_id);
 404   EXPECT_TRUE(entry.SerializeToString(&serialized_entry));
 405   batch.Put(local_id, serialized_entry);
 406
 407   FileCacheEntry cache_entry;
 408   cache_entry.set_md5(md5);
 409   EXPECT_TRUE(cache_entry.SerializeToString(&serialized_entry));
 410   batch.Put(local_id + '\0' + "CACHE", serialized_entry);
 411
 412   batch.Put('\0' + std::string("ID") + '\0' + resource_id, local_id);
 413
 414   // Put another cache entry which is not accompanied by a ResourceEntry.
 415   cache_entry.set_md5(md5_2);
 416   EXPECT_TRUE(cache_entry.SerializeToString(&serialized_entry));
 417   batch.Put(local_id2 + '\0' + "CACHE", serialized_entry);
 418   batch.Put('\0' + std::string("ID") + '\0' + resource_id2, local_id2);
 419
 420   EXPECT_TRUE(resource_map()->Write(leveldb::WriteOptions(), &batch).ok());
 421
 422   // Upgrade and reopen.
 423   storage_.reset();
 424   EXPECT_TRUE(ResourceMetadataStorage::UpgradeOldDB(temp_dir_.path()));
 425   storage_.reset(new ResourceMetadataStorage(
 426       temp_dir_.path(), base::MessageLoopProxy::current().get()));
 427   ASSERT_TRUE(storage_->Initialize());
 428
 429   // No data is lost.
 430   int64 largest_changestamp = 0;
 431   EXPECT_EQ(FILE_ERROR_OK,
 432             storage_->GetLargestChangestamp(&largest_changestamp));
 433   EXPECT_EQ(kLargestChangestamp, largest_changestamp);
 434
 435   std::string id;
 436   EXPECT_EQ(FILE_ERROR_OK, storage_->GetIdByResourceId(resource_id, &id));
 437   EXPECT_EQ(local_id, id);
 438   EXPECT_EQ(FILE_ERROR_OK, storage_->GetEntry(id, &entry));
 439   EXPECT_EQ(title, entry.title());
 440   EXPECT_EQ(md5, entry.file_specific_info().cache_state().md5());
 441
 442   EXPECT_EQ(FILE_ERROR_OK, storage_->GetIdByResourceId(resource_id2, &id));
 443   EXPECT_EQ(local_id2, id);
 444   EXPECT_EQ(FILE_ERROR_OK, storage_->GetEntry(id, &entry));
 445   EXPECT_EQ(md5_2, entry.file_specific_info().cache_state().md5());
 446 }
 447
 448 TEST_F(ResourceMetadataStorageTest, IncompatibleDB_Unknown) {
 449   const int64 kLargestChangestamp = 1234567890;
 450   const std::string key1 = "abcd";
 451
 452   // Put some data.
 453   EXPECT_EQ(FILE_ERROR_OK,
 454             storage_->SetLargestChangestamp(kLargestChangestamp));
 455   ResourceEntry entry;
 456   entry.set_local_id(key1);
 457   EXPECT_EQ(FILE_ERROR_OK, storage_->PutEntry(entry));
 458
 459   // Set newer version, upgrade and reopen DB.
 460   SetDBVersion(ResourceMetadataStorage::kDBVersion + 1);
 461   storage_.reset();
 462   EXPECT_FALSE(ResourceMetadataStorage::UpgradeOldDB(temp_dir_.path()));
 463   storage_.reset(new ResourceMetadataStorage(
 464       temp_dir_.path(), base::MessageLoopProxy::current().get()));
 465   ASSERT_TRUE(storage_->Initialize());
 466
 467   // Data is erased because of the incompatible version.
 468   int64 largest_changestamp = 0;
 469   EXPECT_EQ(FILE_ERROR_OK,
 470             storage_->GetLargestChangestamp(&largest_changestamp));
 471   EXPECT_EQ(0, largest_changestamp);
 472   EXPECT_EQ(FILE_ERROR_NOT_FOUND, storage_->GetEntry(key1, &entry));
 473 }
 474
 475 TEST_F(ResourceMetadataStorageTest, DeleteUnusedIDEntries) {
 476   leveldb::WriteBatch batch;
 477
 478   // Put an ID entry with a corresponding ResourceEntry.
 479   ResourceEntry entry;
 480   entry.set_local_id("id1");
 481   entry.set_resource_id("resource_id1");
 482
 483   std::string serialized_entry;
 484   EXPECT_TRUE(entry.SerializeToString(&serialized_entry));
 485   batch.Put("id1", serialized_entry);
 486   batch.Put('\0' + std::string("ID") + '\0' + "resource_id1", "id1");
 487
 488   // Put an ID entry without any corresponding entries.
 489   batch.Put('\0' + std::string("ID") + '\0' + "resource_id2", "id3");
 490
 491   EXPECT_TRUE(resource_map()->Write(leveldb::WriteOptions(), &batch).ok());
 492
 493   // Upgrade and reopen.
 494   storage_.reset();
 495   EXPECT_TRUE(ResourceMetadataStorage::UpgradeOldDB(temp_dir_.path()));
 496   storage_.reset(new ResourceMetadataStorage(
 497       temp_dir_.path(), base::MessageLoopProxy::current().get()));
 498   ASSERT_TRUE(storage_->Initialize());
 499
 500   // Only the unused entry is deleted.
 501   std::string id;
 502   EXPECT_EQ(FILE_ERROR_OK, storage_->GetIdByResourceId("resource_id1", &id));
 503   EXPECT_EQ("id1", id);
 504   EXPECT_EQ(FILE_ERROR_NOT_FOUND,
 505             storage_->GetIdByResourceId("resource_id2", &id));
 506 }
 507
 508 TEST_F(ResourceMetadataStorageTest, WrongPath) {
 509   // Create a file.
 510   base::FilePath path;
 511   ASSERT_TRUE(base::CreateTemporaryFileInDir(temp_dir_.path(), &path));
 512
 513   storage_.reset(new ResourceMetadataStorage(
 514       path, base::MessageLoopProxy::current().get()));
 515   // Cannot initialize DB beacause the path does not point a directory.
 516   ASSERT_FALSE(storage_->Initialize());
 517 }
 518
 519 TEST_F(ResourceMetadataStorageTest, RecoverCacheEntriesFromTrashedResourceMap) {
 520   // Put entry with id_foo.
 521   ResourceEntry entry;
 522   entry.set_local_id("id_foo");
 523   entry.set_base_name("foo");
 524   entry.set_title("foo");
 525   entry.mutable_file_specific_info()->mutable_cache_state()->set_md5("md5_foo");
 526   EXPECT_EQ(FILE_ERROR_OK, storage_->PutEntry(entry));
 527
 528   // Put entry with id_bar as a id_foo's child.
 529   entry.set_local_id("id_bar");
 530   entry.set_parent_local_id("id_foo");
 531   entry.set_base_name("bar");
 532   entry.set_title("bar");
 533   entry.mutable_file_specific_info()->mutable_cache_state()->set_md5("md5_bar");
 534   entry.mutable_file_specific_info()->mutable_cache_state()->set_is_dirty(true);
 535   EXPECT_EQ(FILE_ERROR_OK, storage_->PutEntry(entry));
 536
 537   // Remove parent-child relationship to make the DB invalid.
 538   RemoveChild("id_foo", "bar");
 539   EXPECT_FALSE(CheckValidity());
 540
 541   // Reopen. This should result in trashing the DB.
 542   storage_.reset(new ResourceMetadataStorage(
 543       temp_dir_.path(), base::MessageLoopProxy::current().get()));
 544   ASSERT_TRUE(storage_->Initialize());
 545
 546   // Recover cache entries from the trashed DB.
 547   ResourceMetadataStorage::RecoveredCacheInfoMap recovered_cache_info;
 548   storage_->RecoverCacheInfoFromTrashedResourceMap(&recovered_cache_info);
 549   EXPECT_EQ(2U, recovered_cache_info.size());
 550   EXPECT_FALSE(recovered_cache_info["id_foo"].is_dirty);
 551   EXPECT_EQ("md5_foo", recovered_cache_info["id_foo"].md5);
 552   EXPECT_EQ("foo", recovered_cache_info["id_foo"].title);
 553   EXPECT_TRUE(recovered_cache_info["id_bar"].is_dirty);
 554   EXPECT_EQ("md5_bar", recovered_cache_info["id_bar"].md5);
 555   EXPECT_EQ("bar", recovered_cache_info["id_bar"].title);
 556 }
 557
 558 TEST_F(ResourceMetadataStorageTest, CheckValidity) {
 559   const std::string key1 = "foo";
 560   const std::string name1 = "hoge";
 561   const std::string key2 = "bar";
 562   const std::string name2 = "fuga";
 563   const std::string key3 = "boo";
 564   const std::string name3 = "piyo";
 565
 566   // Empty storage is valid.
 567   EXPECT_TRUE(CheckValidity());
 568
 569   // Put entry with key1.
 570   ResourceEntry entry;
 571   entry.set_local_id(key1);
 572   entry.set_base_name(name1);
 573   EXPECT_EQ(FILE_ERROR_OK, storage_->PutEntry(entry));
 574   EXPECT_TRUE(CheckValidity());
 575
 576   // Put entry with key2 under key1.
 577   entry.set_local_id(key2);
 578   entry.set_parent_local_id(key1);
 579   entry.set_base_name(name2);
 580   EXPECT_EQ(FILE_ERROR_OK, storage_->PutEntry(entry));
 581   EXPECT_TRUE(CheckValidity());
 582
 583   RemoveChild(key1, name2);
 584   EXPECT_FALSE(CheckValidity());  // Missing parent-child relationship.
 585
 586   // Add back parent-child relationship between key1 and key2.
 587   PutChild(key1, name2, key2);
 588   EXPECT_TRUE(CheckValidity());
 589
 590   // Add parent-child relationship between key2 and key3.
 591   PutChild(key2, name3, key3);
 592   EXPECT_FALSE(CheckValidity());  // key3 is not stored in the storage.
 593
 594   // Put entry with key3 under key2.
 595   entry.set_local_id(key3);
 596   entry.set_parent_local_id(key2);
 597   entry.set_base_name(name3);
 598   EXPECT_EQ(FILE_ERROR_OK, storage_->PutEntry(entry));
 599   EXPECT_TRUE(CheckValidity());
 600
 601   // Parent-child relationship with wrong name.
 602   RemoveChild(key2, name3);
 603   EXPECT_FALSE(CheckValidity());
 604   PutChild(key2, name2, key3);
 605   EXPECT_FALSE(CheckValidity());
 606
 607   // Fix up the relationship between key2 and key3.
 608   RemoveChild(key2, name2);
 609   EXPECT_FALSE(CheckValidity());
 610   PutChild(key2, name3, key3);
 611   EXPECT_TRUE(CheckValidity());
 612
 613   // Remove key2.
 614   RemoveChild(key1, name2);
 615   EXPECT_FALSE(CheckValidity());
 616   EXPECT_EQ(FILE_ERROR_OK, storage_->RemoveEntry(key2));
 617   EXPECT_FALSE(CheckValidity());
 618
 619   // Remove key3.
 620   RemoveChild(key2, name3);
 621   EXPECT_FALSE(CheckValidity());
 622   EXPECT_EQ(FILE_ERROR_OK, storage_->RemoveEntry(key3));
 623   EXPECT_TRUE(CheckValidity());
 624
 625   // Remove key1.
 626   EXPECT_EQ(FILE_ERROR_OK, storage_->RemoveEntry(key1));
 627   EXPECT_TRUE(CheckValidity());
 628 }
 629
 630 }  // namespace internal
 631 }  // namespace drive