sync/internal_api/attachments/attachment_store_test_template.h

   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 #ifndef SYNC_INTERNAL_API_ATTACHMENTS_ATTACHMENT_STORE_TEST_TEMPLATE_H_
   6 #define SYNC_INTERNAL_API_ATTACHMENTS_ATTACHMENT_STORE_TEST_TEMPLATE_H_
   7
   8 #include "sync/api/attachments/attachment_store.h"
   9
  10 #include "base/bind.h"
  11 #include "base/files/scoped_temp_dir.h"
  12 #include "base/memory/ref_counted_memory.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "base/run_loop.h"
  15 #include "base/thread_task_runner_handle.h"
  16 #include "sync/api/attachments/attachment.h"
  17 #include "sync/internal_api/public/attachments/attachment_util.h"
  18 #include "sync/protocol/sync.pb.h"
  19 #include "testing/gmock/include/gmock/gmock-matchers.h"
  20 #include "testing/gtest/include/gtest/gtest.h"
  21
  22 // AttachmentStoreTest defines tests for AttachmentStore. To instantiate these
  23 // tests for a particular implementation you need to:
  24 //  - Include this file in test.
  25 //  - Create factory class for attachment store that implements factory method.
  26 //  - add INSTANTIATE_TYPED_TEST_CASE_P statement.
  27 // Here is how to do it for MyAttachmentStore:
  28 //
  29 // class MyAttachmentStoreFactory {
  30 //  public:
  31 //   scoped_refptr<AttachmentStore> CreateAttachmentStore() {
  32 //     return new MyAttachmentStore();
  33 //   }
  34 // };
  35 //
  36 // INSTANTIATE_TYPED_TEST_CASE_P(My,
  37 //                               AttachmentStoreTest,
  38 //                               MyAttachmentStoreFactory);
  39
  40 namespace syncer {
  41
  42 const char kTestData1[] = "test data 1";
  43 const char kTestData2[] = "test data 2";
  44
  45 template <typename AttachmentStoreFactory>
  46 class AttachmentStoreTest : public testing::Test {
  47  protected:
  48   AttachmentStoreFactory attachment_store_factory;
  49   base::MessageLoop message_loop;
  50   scoped_ptr<AttachmentStore> store;
  51   scoped_ptr<AttachmentStoreForSync> store_for_sync;
  52   AttachmentStore::Result result;
  53   scoped_ptr<AttachmentMap> attachments;
  54   scoped_ptr<AttachmentIdList> failed_attachment_ids;
  55   scoped_ptr<AttachmentMetadataList> attachment_metadata;
  56
  57   AttachmentStore::ReadCallback read_callback;
  58   AttachmentStore::WriteCallback write_callback;
  59   AttachmentStore::DropCallback drop_callback;
  60   AttachmentStore::ReadMetadataCallback read_metadata_callback;
  61
  62   scoped_refptr<base::RefCountedString> some_data1;
  63   scoped_refptr<base::RefCountedString> some_data2;
  64
  65   AttachmentStoreTest() {}
  66
  67   void SetUp() override {
  68     store = attachment_store_factory.CreateAttachmentStore();
  69     store_for_sync = store->CreateAttachmentStoreForSync();
  70
  71     Clear();
  72     read_callback = base::Bind(&AttachmentStoreTest::CopyResultAttachments,
  73                                base::Unretained(this),
  74                                &result,
  75                                &attachments,
  76                                &failed_attachment_ids);
  77     write_callback = base::Bind(
  78         &AttachmentStoreTest::CopyResult, base::Unretained(this), &result);
  79     drop_callback = write_callback;
  80     read_metadata_callback =
  81         base::Bind(&AttachmentStoreTest::CopyResultMetadata,
  82                    base::Unretained(this), &result, &attachment_metadata);
  83
  84     some_data1 = new base::RefCountedString;
  85     some_data1->data() = kTestData1;
  86
  87     some_data2 = new base::RefCountedString;
  88     some_data2->data() = kTestData2;
  89   }
  90
  91   void ClearAndPumpLoop() {
  92     Clear();
  93     base::RunLoop().RunUntilIdle();
  94   }
  95
  96  private:
  97   void Clear() {
  98     result = AttachmentStore::UNSPECIFIED_ERROR;
  99     attachments.reset();
 100     failed_attachment_ids.reset();
 101     attachment_metadata.reset();
 102   }
 103
 104   void CopyResult(AttachmentStore::Result* destination_result,
 105                   const AttachmentStore::Result& source_result) {
 106     *destination_result = source_result;
 107   }
 108
 109   void CopyResultAttachments(
 110       AttachmentStore::Result* destination_result,
 111       scoped_ptr<AttachmentMap>* destination_attachments,
 112       scoped_ptr<AttachmentIdList>* destination_failed_attachment_ids,
 113       const AttachmentStore::Result& source_result,
 114       scoped_ptr<AttachmentMap> source_attachments,
 115       scoped_ptr<AttachmentIdList> source_failed_attachment_ids) {
 116     CopyResult(destination_result, source_result);
 117     *destination_attachments = source_attachments.Pass();
 118     *destination_failed_attachment_ids = source_failed_attachment_ids.Pass();
 119   }
 120
 121   void CopyResultMetadata(
 122       AttachmentStore::Result* destination_result,
 123       scoped_ptr<AttachmentMetadataList>* destination_metadata,
 124       const AttachmentStore::Result& source_result,
 125       scoped_ptr<AttachmentMetadataList> source_metadata) {
 126     CopyResult(destination_result, source_result);
 127     *destination_metadata = source_metadata.Pass();
 128   }
 129 };
 130
 131 TYPED_TEST_CASE_P(AttachmentStoreTest);
 132
 133 // Verify that CreateAttachmentStoreForSync() creates valid object.
 134 TYPED_TEST_P(AttachmentStoreTest, CreateAttachmentStoreForSync) {
 135   scoped_ptr<AttachmentStoreForSync> attachment_store_for_sync =
 136       this->store->CreateAttachmentStoreForSync();
 137   EXPECT_NE(nullptr, attachment_store_for_sync);
 138 }
 139
 140 // Verify that we do not overwrite existing attachments and that we do not treat
 141 // it as an error.
 142 TYPED_TEST_P(AttachmentStoreTest, Write_NoOverwriteNoError) {
 143   // Create two attachments with the same id but different data.
 144   Attachment attachment1 = Attachment::Create(this->some_data1);
 145   Attachment attachment2 =
 146       Attachment::CreateFromParts(attachment1.GetId(), this->some_data2);
 147
 148   // Write the first one.
 149   AttachmentList some_attachments;
 150   some_attachments.push_back(attachment1);
 151   this->store->Write(some_attachments, this->write_callback);
 152   this->ClearAndPumpLoop();
 153   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 154
 155   // Write the second one.
 156   some_attachments.clear();
 157   some_attachments.push_back(attachment2);
 158   this->store->Write(some_attachments, this->write_callback);
 159   this->ClearAndPumpLoop();
 160   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 161
 162   // Read it back and see that it was not overwritten.
 163   AttachmentIdList some_attachment_ids;
 164   some_attachment_ids.push_back(attachment1.GetId());
 165   this->store->Read(some_attachment_ids, this->read_callback);
 166   this->ClearAndPumpLoop();
 167   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 168   EXPECT_EQ(1U, this->attachments->size());
 169   EXPECT_EQ(0U, this->failed_attachment_ids->size());
 170   AttachmentMap::const_iterator a1 =
 171       this->attachments->find(attachment1.GetId());
 172   EXPECT_TRUE(a1 != this->attachments->end());
 173   EXPECT_TRUE(attachment1.GetData()->Equals(a1->second.GetData()));
 174 }
 175
 176 // Verify that we can write some attachments and read them back.
 177 TYPED_TEST_P(AttachmentStoreTest, Write_RoundTrip) {
 178   Attachment attachment1 = Attachment::Create(this->some_data1);
 179   Attachment attachment2 = Attachment::Create(this->some_data2);
 180   AttachmentList some_attachments;
 181   some_attachments.push_back(attachment1);
 182   some_attachments.push_back(attachment2);
 183
 184   this->store->Write(some_attachments, this->write_callback);
 185   this->ClearAndPumpLoop();
 186   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 187
 188   AttachmentIdList some_attachment_ids;
 189   some_attachment_ids.push_back(attachment1.GetId());
 190   some_attachment_ids.push_back(attachment2.GetId());
 191   this->store->Read(some_attachment_ids, this->read_callback);
 192   this->ClearAndPumpLoop();
 193   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 194   EXPECT_EQ(2U, this->attachments->size());
 195   EXPECT_EQ(0U, this->failed_attachment_ids->size());
 196
 197   AttachmentMap::const_iterator a1 =
 198       this->attachments->find(attachment1.GetId());
 199   EXPECT_TRUE(a1 != this->attachments->end());
 200   EXPECT_TRUE(attachment1.GetData()->Equals(a1->second.GetData()));
 201
 202   AttachmentMap::const_iterator a2 =
 203       this->attachments->find(attachment2.GetId());
 204   EXPECT_TRUE(a2 != this->attachments->end());
 205   EXPECT_TRUE(attachment2.GetData()->Equals(a2->second.GetData()));
 206 }
 207
 208 // Try to read two attachments when only one exists.
 209 TYPED_TEST_P(AttachmentStoreTest, Read_OneNotFound) {
 210   Attachment attachment1 = Attachment::Create(this->some_data1);
 211   Attachment attachment2 = Attachment::Create(this->some_data2);
 212
 213   AttachmentList some_attachments;
 214   // Write attachment1 only.
 215   some_attachments.push_back(attachment1);
 216   this->store->Write(some_attachments, this->write_callback);
 217   this->ClearAndPumpLoop();
 218   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 219
 220   // Try to read both attachment1 and attachment2.
 221   AttachmentIdList ids;
 222   ids.push_back(attachment1.GetId());
 223   ids.push_back(attachment2.GetId());
 224   this->store->Read(ids, this->read_callback);
 225   this->ClearAndPumpLoop();
 226
 227   // See that only attachment1 was read.
 228   EXPECT_EQ(AttachmentStore::UNSPECIFIED_ERROR, this->result);
 229   EXPECT_EQ(1U, this->attachments->size());
 230   EXPECT_EQ(1U, this->failed_attachment_ids->size());
 231 }
 232
 233 // Try to drop two attachments when only one exists. Verify that no error occurs
 234 // and that the existing attachment was dropped.
 235 TYPED_TEST_P(AttachmentStoreTest, Drop_DropTwoButOnlyOneExists) {
 236   // First, create two attachments.
 237   Attachment attachment1 = Attachment::Create(this->some_data1);
 238   Attachment attachment2 = Attachment::Create(this->some_data2);
 239   AttachmentList some_attachments;
 240   some_attachments.push_back(attachment1);
 241   some_attachments.push_back(attachment2);
 242   this->store->Write(some_attachments, this->write_callback);
 243   this->ClearAndPumpLoop();
 244   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 245
 246   // Drop attachment1 only.
 247   AttachmentIdList ids;
 248   ids.push_back(attachment1.GetId());
 249   this->store->Drop(ids, this->drop_callback);
 250   this->ClearAndPumpLoop();
 251   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 252
 253   // See that attachment1 is gone.
 254   this->store->Read(ids, this->read_callback);
 255   this->ClearAndPumpLoop();
 256   EXPECT_EQ(AttachmentStore::UNSPECIFIED_ERROR, this->result);
 257   EXPECT_EQ(0U, this->attachments->size());
 258   EXPECT_EQ(1U, this->failed_attachment_ids->size());
 259   EXPECT_EQ(attachment1.GetId(), (*this->failed_attachment_ids)[0]);
 260
 261   // Drop both attachment1 and attachment2.
 262   ids.clear();
 263   ids.push_back(attachment1.GetId());
 264   ids.push_back(attachment2.GetId());
 265   this->store->Drop(ids, this->drop_callback);
 266   this->ClearAndPumpLoop();
 267   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 268
 269   // See that attachment2 is now gone.
 270   ids.clear();
 271   ids.push_back(attachment2.GetId());
 272   this->store->Read(ids, this->read_callback);
 273   this->ClearAndPumpLoop();
 274   EXPECT_EQ(AttachmentStore::UNSPECIFIED_ERROR, this->result);
 275   EXPECT_EQ(0U, this->attachments->size());
 276   EXPECT_EQ(1U, this->failed_attachment_ids->size());
 277   EXPECT_EQ(attachment2.GetId(), (*this->failed_attachment_ids)[0]);
 278 }
 279
 280 // Verify that attempting to drop an attachment that does not exist is not an
 281 // error.
 282 TYPED_TEST_P(AttachmentStoreTest, Drop_DoesNotExist) {
 283   Attachment attachment1 = Attachment::Create(this->some_data1);
 284   AttachmentList some_attachments;
 285   some_attachments.push_back(attachment1);
 286   this->store->Write(some_attachments, this->write_callback);
 287   this->ClearAndPumpLoop();
 288   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 289
 290   // Drop the attachment.
 291   AttachmentIdList ids;
 292   ids.push_back(attachment1.GetId());
 293   this->store->Drop(ids, this->drop_callback);
 294   this->ClearAndPumpLoop();
 295   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 296
 297   // See that it's gone.
 298   this->store->Read(ids, this->read_callback);
 299   this->ClearAndPumpLoop();
 300   EXPECT_EQ(AttachmentStore::UNSPECIFIED_ERROR, this->result);
 301   EXPECT_EQ(0U, this->attachments->size());
 302   EXPECT_EQ(1U, this->failed_attachment_ids->size());
 303   EXPECT_EQ(attachment1.GetId(), (*this->failed_attachment_ids)[0]);
 304
 305   // Drop again, see that no error occurs.
 306   ids.clear();
 307   ids.push_back(attachment1.GetId());
 308   this->store->Drop(ids, this->drop_callback);
 309   this->ClearAndPumpLoop();
 310   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 311 }
 312
 313 // Verify getting metadata for specific attachments.
 314 TYPED_TEST_P(AttachmentStoreTest, ReadMetadata) {
 315   Attachment attachment1 = Attachment::Create(this->some_data1);
 316   Attachment attachment2 = Attachment::Create(this->some_data2);
 317
 318   AttachmentList some_attachments;
 319   // Write attachment1 only.
 320   some_attachments.push_back(attachment1);
 321   this->store->Write(some_attachments, this->write_callback);
 322   this->ClearAndPumpLoop();
 323   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 324
 325   // Try to read metadata for both attachment1 and attachment2.
 326   AttachmentIdList ids;
 327   ids.push_back(attachment1.GetId());
 328   ids.push_back(attachment2.GetId());
 329   this->store->ReadMetadata(ids, this->read_metadata_callback);
 330   this->ClearAndPumpLoop();
 331
 332   // See that only one entry was read.
 333   EXPECT_EQ(AttachmentStore::UNSPECIFIED_ERROR, this->result);
 334   EXPECT_EQ(1U, this->attachment_metadata->size());
 335
 336   // Now write attachment2.
 337   some_attachments[0] = attachment2;
 338   this->store->Write(some_attachments, this->write_callback);
 339   this->ClearAndPumpLoop();
 340   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 341
 342   // Try to read metadata for both attachment1 and attachment2 again.
 343   this->store->ReadMetadata(ids, this->read_metadata_callback);
 344   this->ClearAndPumpLoop();
 345   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 346   EXPECT_EQ(2U, this->attachment_metadata->size());
 347
 348   // Verify that we've got both entries back in the right order.
 349   AttachmentMetadataList::const_iterator iter =
 350       this->attachment_metadata->begin();
 351   EXPECT_EQ(attachment1.GetId(), iter->GetId());
 352   ++iter;
 353   EXPECT_EQ(attachment2.GetId(), iter->GetId());
 354 }
 355
 356 // Verify that ReadAllMetadata/ReadSyncMetadata returns metadata for correct
 357 // set of attachments.
 358 TYPED_TEST_P(AttachmentStoreTest, ReadAllMetadata) {
 359   // Try to read all metadata from an empty store.
 360   this->store->ReadAllMetadata(this->read_metadata_callback);
 361   this->ClearAndPumpLoop();
 362   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 363   EXPECT_EQ(0U, this->attachment_metadata->size());
 364
 365   // Create and write attachments with different set of references.
 366   Attachment attachment_mt = Attachment::Create(this->some_data1);
 367   Attachment attachment_sync = Attachment::Create(this->some_data1);
 368   Attachment attachment_both = Attachment::Create(this->some_data1);
 369
 370   AttachmentList attachments;
 371   attachments.push_back(attachment_mt);
 372   attachments.push_back(attachment_sync);
 373   attachments.push_back(attachment_both);
 374   this->store->Write(attachments, this->write_callback);
 375   this->ClearAndPumpLoop();
 376   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 377
 378   AttachmentIdList ids;
 379   ids.push_back(attachment_sync.GetId());
 380   ids.push_back(attachment_both.GetId());
 381   this->store_for_sync->SetSyncReference(ids);
 382
 383   ids.clear();
 384   ids.push_back(attachment_sync.GetId());
 385   this->store->Drop(ids, this->drop_callback);
 386   this->ClearAndPumpLoop();
 387
 388   // Calling ReadMetadata for above three attachments should return all of them.
 389   ids.clear();
 390   ids.push_back(attachment_sync.GetId());
 391   ids.push_back(attachment_sync.GetId());
 392   ids.push_back(attachment_both.GetId());
 393   this->store->ReadMetadata(ids, this->read_metadata_callback);
 394   this->ClearAndPumpLoop();
 395   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 396   EXPECT_EQ(3U, this->attachment_metadata->size());
 397
 398   // Call to ReadAllMetadata() should only return attachments with model type
 399   // reference.
 400   this->store->ReadAllMetadata(this->read_metadata_callback);
 401   this->ClearAndPumpLoop();
 402   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 403   EXPECT_EQ(2U, this->attachment_metadata->size());
 404
 405   // Verify that we get all attachments back (the order is undefined).
 406   AttachmentIdSet id_set;
 407   id_set.insert(attachment_mt.GetId());
 408   id_set.insert(attachment_both.GetId());
 409   EXPECT_THAT(id_set,
 410               testing::Contains((*this->attachment_metadata)[0].GetId()));
 411   EXPECT_THAT(id_set,
 412               testing::Contains((*this->attachment_metadata)[1].GetId()));
 413
 414   // Call to ReadSyncMetadata() should only return attachments with sync
 415   // reference.
 416   this->store_for_sync->ReadSyncMetadata(this->read_metadata_callback);
 417   this->ClearAndPumpLoop();
 418   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 419   EXPECT_EQ(2U, this->attachment_metadata->size());
 420
 421   id_set.clear();
 422   id_set.insert(attachment_sync.GetId());
 423   id_set.insert(attachment_both.GetId());
 424   EXPECT_THAT(id_set,
 425               testing::Contains((*this->attachment_metadata)[0].GetId()));
 426   EXPECT_THAT(id_set,
 427               testing::Contains((*this->attachment_metadata)[1].GetId()));
 428 }
 429
 430 // Verify that setting/droping references gets reflected in ReadAllMetadata and
 431 // that attachment is only deleted after last reference is droped.
 432 TYPED_TEST_P(AttachmentStoreTest, SetSyncReference_DropSyncReference) {
 433   Attachment attachment = Attachment::Create(this->some_data1);
 434   AttachmentList attachments;
 435   attachments.push_back(attachment);
 436   AttachmentIdList ids;
 437   ids.push_back(attachment.GetId());
 438
 439   // When writing attachment to store only model type reference should be set.
 440   this->store->Write(attachments, this->write_callback);
 441
 442   this->store->ReadAllMetadata(this->read_metadata_callback);
 443   this->ClearAndPumpLoop();
 444   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 445   EXPECT_EQ(1U, this->attachment_metadata->size());
 446   EXPECT_EQ(attachment.GetId(), this->attachment_metadata->begin()->GetId());
 447
 448   this->store_for_sync->ReadSyncMetadata(this->read_metadata_callback);
 449   this->ClearAndPumpLoop();
 450   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 451   EXPECT_EQ(0U, this->attachment_metadata->size());
 452
 453   // After call to SetSyncReference() ReadSyncMetadata should start returning
 454   // attachment.
 455   this->store_for_sync->SetSyncReference(ids);
 456
 457   this->store_for_sync->ReadSyncMetadata(this->read_metadata_callback);
 458   this->ClearAndPumpLoop();
 459   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 460   EXPECT_EQ(1U, this->attachment_metadata->size());
 461
 462   // Call SetSyncReference() to verify it is idempotent.
 463   this->store_for_sync->SetSyncReference(ids);
 464   this->ClearAndPumpLoop();
 465
 466   // Droping attachment should remove model type reference, but there is still
 467   // sync reference.
 468   this->store->Drop(ids, this->drop_callback);
 469   this->ClearAndPumpLoop();
 470   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 471
 472   this->store->ReadAllMetadata(this->read_metadata_callback);
 473   this->ClearAndPumpLoop();
 474   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 475   EXPECT_EQ(0U, this->attachment_metadata->size());
 476
 477   this->store_for_sync->ReadSyncMetadata(this->read_metadata_callback);
 478   this->ClearAndPumpLoop();
 479   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 480   EXPECT_EQ(1U, this->attachment_metadata->size());
 481
 482   // ReadMetadata should still return this attachment even though it does not
 483   // have model type reference.
 484   this->store->ReadMetadata(ids, this->read_metadata_callback);
 485   this->ClearAndPumpLoop();
 486   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 487   EXPECT_EQ(1U, this->attachment_metadata->size());
 488
 489   // Call Drop() again to ensure it doesn't fail.
 490   this->store->Drop(ids, this->drop_callback);
 491   this->ClearAndPumpLoop();
 492   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 493
 494   // After droping sync reference attachment should be deleted from store.
 495   // ReadMetadata should return UNSPECIFIED_ERROR.
 496   this->store_for_sync->DropSyncReference(ids);
 497
 498   this->store_for_sync->ReadSyncMetadata(this->read_metadata_callback);
 499   this->ClearAndPumpLoop();
 500   EXPECT_EQ(AttachmentStore::SUCCESS, this->result);
 501   EXPECT_EQ(0U, this->attachment_metadata->size());
 502
 503   this->store->ReadMetadata(ids, this->read_metadata_callback);
 504   this->ClearAndPumpLoop();
 505   EXPECT_EQ(AttachmentStore::UNSPECIFIED_ERROR, this->result);
 506   EXPECT_EQ(0U, this->attachment_metadata->size());
 507 }
 508
 509 REGISTER_TYPED_TEST_CASE_P(AttachmentStoreTest,
 510                            CreateAttachmentStoreForSync,
 511                            Write_NoOverwriteNoError,
 512                            Write_RoundTrip,
 513                            Read_OneNotFound,
 514                            Drop_DropTwoButOnlyOneExists,
 515                            Drop_DoesNotExist,
 516                            ReadMetadata,
 517                            ReadAllMetadata,
 518                            SetSyncReference_DropSyncReference);
 519
 520 }  // namespace syncer
 521
 522 #endif  // SYNC_INTERNAL_API_ATTACHMENTS_ATTACHMENT_STORE_TEST_TEMPLATE_H_