Migrate the IndexedDB backend from Blink to Chromium

content/browser/indexed_db/indexed_db_backing_store_unittest.cc

Index: content/browser/indexed_db/indexed_db_backing_store_unittest.cc
diff --git a/content/browser/indexed_db/indexed_db_backing_store_unittest.cc b/content/browser/indexed_db/indexed_db_backing_store_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e92b38c31a4fde35928146ea0bd2861b589b2c74
--- /dev/null
+++ b/content/browser/indexed_db/indexed_db_backing_store_unittest.cc
@@ -0,0 +1,404 @@
+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/browser/indexed_db/indexed_db_backing_store.h"
+
+#include "base/files/scoped_temp_dir.h"
+#include "base/logging.h"
+#include "base/string16.h"
+#include "base/strings/utf_string_conversions.h"
+#include "content/browser/indexed_db/indexed_db_factory_impl.h"
+#include "content/browser/indexed_db/indexed_db_leveldb_coding.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebData.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebSecurityOrigin.h"
+
+using WebKit::WebSecurityOrigin;
+using WebKit::WebIDBKey;
+
+namespace content {
+
+namespace {
+
+class IndexedDBBackingStoreTest : public testing::Test {
+ public:
+  IndexedDBBackingStoreTest() {}
+  virtual void SetUp() {
+    string16 file_identifier;
+    backing_store_ = IndexedDBBackingStore::OpenInMemory(file_identifier);
+
+    // useful keys and values during tests
+    const char raw_value1[] = "value1";
+
+    const char raw_value2[] = "value2";
+    const char raw_value3[] = "value3";
+    m_value1.insert(
+        m_value1.end(), &raw_value1[0], &raw_value1[0] + sizeof(raw_value1));
+    m_value2.insert(
+        m_value2.end(), &raw_value2[0], &raw_value2[0] + sizeof(raw_value2));
+    m_value3.insert(
+        m_value3.end(), &raw_value3[0], &raw_value3[0] + sizeof(raw_value3));
+    m_key1 = IndexedDBKey(99, WebIDBKey::NumberType);
+    m_key2 = IndexedDBKey(ASCIIToUTF16("key2"));
+    m_key3 = IndexedDBKey(ASCIIToUTF16("key3"));
+  }
+
+ protected:
+  scoped_refptr<IndexedDBBackingStore> backing_store_;
+
+  // Sample keys and values that are consistent.
+  IndexedDBKey m_key1;
+  IndexedDBKey m_key2;
+  IndexedDBKey m_key3;
+  std::vector<char> m_value1;
+  std::vector<char> m_value2;
+  std::vector<char> m_value3;
+};
+
+TEST_F(IndexedDBBackingStoreTest, PutGetConsistency) {
+  {
+    IndexedDBBackingStore::Transaction transaction1(backing_store_.get());
+    transaction1.begin();
+    IndexedDBBackingStore::RecordIdentifier record;
+    bool ok = backing_store_->PutRecord(
+        &transaction1, 1, 1, m_key1, m_value1, &record);
+    EXPECT_TRUE(ok);
+    transaction1.Commit();
+  }
+
+  {
+    IndexedDBBackingStore::Transaction transaction2(backing_store_.get());
+    transaction2.begin();
+    std::vector<char> result_value;
+    bool ok =
+        backing_store_->GetRecord(&transaction2, 1, 1, m_key1, result_value);
+    transaction2.Commit();
+    EXPECT_TRUE(ok);
+    EXPECT_EQ(m_value1, result_value);
+  }
+}
+
+// Make sure that using very high ( more than 32 bit ) values for database_id
+// and object_store_id still work.
+TEST_F(IndexedDBBackingStoreTest, HighIds) {
+  const int64_t high_database_id = 1ULL << 35;
+  const int64_t high_object_store_id = 1ULL << 39;
+  // index_ids are capped at 32 bits for storage purposes.
+  const int64_t high_index_id = 1ULL << 29;
+
+  const int64_t invalid_high_index_id = 1ULL << 37;
+
+  const IndexedDBKey& index_key = m_key2;
+  std::vector<char> index_key_raw = EncodeIDBKey(index_key);
+  {
+    IndexedDBBackingStore::Transaction transaction1(backing_store_.get());
+    transaction1.begin();
+    IndexedDBBackingStore::RecordIdentifier record;
+    bool ok = backing_store_->PutRecord(&transaction1,
+                                        high_database_id,
+                                        high_object_store_id,
+                                        m_key1,
+                                        m_value1,
+                                        &record);
+    EXPECT_TRUE(ok);
+
+    ok = backing_store_->PutIndexDataForRecord(&transaction1,
+                                               high_database_id,
+                                               high_object_store_id,
+                                               invalid_high_index_id,
+                                               index_key,
+                                               record);
+    EXPECT_FALSE(ok);
+
+    ok = backing_store_->PutIndexDataForRecord(&transaction1,
+                                               high_database_id,
+                                               high_object_store_id,
+                                               high_index_id,
+                                               index_key,
+                                               record);
+    EXPECT_TRUE(ok);
+
+    ok = transaction1.Commit();
+    EXPECT_TRUE(ok);
+  }
+
+  {
+    IndexedDBBackingStore::Transaction transaction2(backing_store_.get());
+    transaction2.begin();
+    std::vector<char> result_value;
+    bool ok = backing_store_->GetRecord(&transaction2,
+                                        high_database_id,
+                                        high_object_store_id,
+                                        m_key1,
+                                        result_value);
+    EXPECT_TRUE(ok);
+    EXPECT_EQ(m_value1, result_value);
+
+    scoped_ptr<IndexedDBKey> new_primary_key;
+    ok = backing_store_->GetPrimaryKeyViaIndex(&transaction2,
+                                               high_database_id,
+                                               high_object_store_id,
+                                               invalid_high_index_id,
+                                               index_key,
+                                               &new_primary_key);
+    EXPECT_FALSE(ok);
+
+    ok = backing_store_->GetPrimaryKeyViaIndex(&transaction2,
+                                               high_database_id,
+                                               high_object_store_id,
+                                               high_index_id,
+                                               index_key,
+                                               &new_primary_key);
+    EXPECT_TRUE(ok);
+    EXPECT_TRUE(new_primary_key->IsEqual(m_key1));
+
+    ok = transaction2.Commit();
+    EXPECT_TRUE(ok);
+  }
+}
+
+// Make sure that other invalid ids do not crash.
+TEST_F(IndexedDBBackingStoreTest, InvalidIds) {
+  // valid ids for use when testing invalid ids
+  const int64_t database_id = 1;
+  const int64_t object_store_id = 1;
+  const int64_t index_id = kMinimumIndexId;
+  const int64_t invalid_low_index_id =
+      19;  // index_ids must be > kMinimumIndexId
+
+  std::vector<char> result_value;
+
+  IndexedDBBackingStore::Transaction transaction1(backing_store_.get());
+  transaction1.begin();
+
+  IndexedDBBackingStore::RecordIdentifier record;
+  bool ok = backing_store_->PutRecord(&transaction1,
+                                      database_id,
+                                      KeyPrefix::kInvalidId,
+                                      m_key1,
+                                      m_value1,
+                                      &record);
+  EXPECT_FALSE(ok);
+  ok = backing_store_->PutRecord(
+      &transaction1, database_id, 0, m_key1, m_value1, &record);
+  EXPECT_FALSE(ok);
+  ok = backing_store_->PutRecord(&transaction1,
+                                 KeyPrefix::kInvalidId,
+                                 object_store_id,
+                                 m_key1,
+                                 m_value1,
+                                 &record);
+  EXPECT_FALSE(ok);
+  ok = backing_store_->PutRecord(
+      &transaction1, 0, object_store_id, m_key1, m_value1, &record);
+  EXPECT_FALSE(ok);
+
+  ok = backing_store_->GetRecord(
+      &transaction1, database_id, KeyPrefix::kInvalidId, m_key1, result_value);
+  EXPECT_FALSE(ok);
+  ok = backing_store_->GetRecord(
+      &transaction1, database_id, 0, m_key1, result_value);
+  EXPECT_FALSE(ok);
+  ok = backing_store_->GetRecord(&transaction1,
+                                 KeyPrefix::kInvalidId,
+                                 object_store_id,
+                                 m_key1,
+                                 result_value);
+  EXPECT_FALSE(ok);
+  ok = backing_store_->GetRecord(
+      &transaction1, 0, object_store_id, m_key1, result_value);
+  EXPECT_FALSE(ok);
+
+  scoped_ptr<IndexedDBKey> new_primary_key;
+  ok = backing_store_->GetPrimaryKeyViaIndex(&transaction1,
+                                             database_id,
+                                             object_store_id,
+                                             KeyPrefix::kInvalidId,
+                                             m_key1,
+                                             &new_primary_key);
+  EXPECT_FALSE(ok);
+  ok = backing_store_->GetPrimaryKeyViaIndex(&transaction1,
+                                             database_id,
+                                             object_store_id,
+                                             invalid_low_index_id,
+                                             m_key1,
+                                             &new_primary_key);
+  EXPECT_FALSE(ok);
+  ok = backing_store_->GetPrimaryKeyViaIndex(
+      &transaction1, database_id, object_store_id, 0, m_key1, &new_primary_key);
+  EXPECT_FALSE(ok);
+
+  ok = backing_store_->GetPrimaryKeyViaIndex(&transaction1,
+                                             KeyPrefix::kInvalidId,
+                                             object_store_id,
+                                             index_id,
+                                             m_key1,
+                                             &new_primary_key);
+  EXPECT_FALSE(ok);
+  ok = backing_store_->GetPrimaryKeyViaIndex(&transaction1,
+                                             database_id,
+                                             KeyPrefix::kInvalidId,
+                                             index_id,
+                                             m_key1,
+                                             &new_primary_key);
+  EXPECT_FALSE(ok);
+}
+
+TEST_F(IndexedDBBackingStoreTest, CreateDatabase) {
+  const string16 database_name(ASCIIToUTF16("db1"));
+  int64_t database_id;
+  const string16 version(ASCIIToUTF16("old_string_version"));
+  const int64_t int_version = 9;
+
+  const int64_t object_store_id = 99;
+  const string16 object_store_name(ASCIIToUTF16("object_store1"));
+  const bool auto_increment = true;
+  const IndexedDBKeyPath object_store_key_path(
+      ASCIIToUTF16("object_store_key"));
+
+  const int64_t index_id = 999;
+  const string16 index_name(ASCIIToUTF16("index1"));
+  const bool unique = true;
+  const bool multi_entry = true;
+  const IndexedDBKeyPath index_key_path(ASCIIToUTF16("index_key"));
+
+  {
+    bool ok = backing_store_->CreateIDBDatabaseMetaData(
+        database_name, version, int_version, database_id);
+    EXPECT_TRUE(ok);
+    EXPECT_GT(database_id, 0);
+
+    IndexedDBBackingStore::Transaction transaction(backing_store_.get());
+    transaction.begin();
+
+    ok = backing_store_->CreateObjectStore(&transaction,
+                                           database_id,
+                                           object_store_id,
+                                           object_store_name,
+                                           object_store_key_path,
+                                           auto_increment);
+    EXPECT_TRUE(ok);
+
+    ok = backing_store_->CreateIndex(&transaction,
+                                     database_id,
+                                     object_store_id,
+                                     index_id,
+                                     index_name,
+                                     index_key_path,
+                                     unique,
+                                     multi_entry);
+    EXPECT_TRUE(ok);
+
+    ok = transaction.Commit();
+    EXPECT_TRUE(ok);
+  }
+
+  {
+    IndexedDBDatabaseMetadata database;
+    bool found;
+    bool ok =
+        backing_store_->GetIDBDatabaseMetaData(database_name, &database, found);
+    EXPECT_TRUE(ok);
+    EXPECT_TRUE(found);
+
+    // database.name is not filled in by the implementation.
+    EXPECT_EQ(version, database.version);
+    EXPECT_EQ(int_version, database.int_version);
+    EXPECT_EQ(database_id, database.id);
+
+    ok = backing_store_->GetObjectStores(database.id, &database.object_stores);
+    EXPECT_TRUE(ok);
+
+    EXPECT_EQ(1UL, database.object_stores.size());
+    IndexedDBObjectStoreMetadata object_store =
+        database.object_stores[object_store_id];
+    EXPECT_EQ(object_store_name, object_store.name);
+    EXPECT_EQ(object_store_key_path, object_store.key_path);
+    EXPECT_EQ(auto_increment, object_store.auto_increment);
+
+    EXPECT_EQ(1UL, object_store.indexes.size());
+    IndexedDBIndexMetadata index = object_store.indexes[index_id];
+    EXPECT_EQ(index_name, index.name);
+    EXPECT_EQ(index_key_path, index.key_path);
+    EXPECT_EQ(unique, index.unique);
+    EXPECT_EQ(multi_entry, index.multi_entry);
+  }
+}
+
+class MockIDBFactory : public IndexedDBFactoryImpl {
+ public:
+  static scoped_refptr<MockIDBFactory> Create() {
+    return make_scoped_refptr(new MockIDBFactory());
+  }
+
+  scoped_refptr<IndexedDBBackingStore> TestOpenBackingStore(
+      const WebSecurityOrigin& origin,
+      const base::FilePath& data_directory) {
+    string16 path = UTF8ToUTF16(data_directory.AsUTF8Unsafe());
+    return OpenBackingStore(origin.databaseIdentifier(), path);
+  }
+
+ private:
+  virtual ~MockIDBFactory() {}
+};
+
+TEST(IndexedDBFactoryTest, BackingStoreLifetime) {
+  WebSecurityOrigin origin1 =
+      WebSecurityOrigin::createFromString("http://localhost:81");
+  WebSecurityOrigin origin2 =
+      WebSecurityOrigin::createFromString("http://localhost:82");
+
+  scoped_refptr<MockIDBFactory> factory = MockIDBFactory::Create();
+
+  base::ScopedTempDir temp_directory;
+  DCHECK(temp_directory.CreateUniqueTempDir());
+  scoped_refptr<IndexedDBBackingStore> disk_store1 =
+      factory->TestOpenBackingStore(origin1, temp_directory.path());
+  EXPECT_TRUE(disk_store1->HasOneRef());
+
+  scoped_refptr<IndexedDBBackingStore> disk_store2 =
+      factory->TestOpenBackingStore(origin1, temp_directory.path());
+  EXPECT_EQ(disk_store1.get(), disk_store2.get());
+  // TODO(alecflett): Verify refcount indirectly.
+  // EXPECT_EQ(2, disk_store2->RefCount());
+
+  scoped_refptr<IndexedDBBackingStore> disk_store3 =
+      factory->TestOpenBackingStore(origin2, temp_directory.path());
+  EXPECT_TRUE(disk_store3->HasOneRef());
+  // TODO(alecflett): Verify refcount indirectly.
+  // EXPECT_EQ(2, disk_store1->RefCount());
+}
+
+TEST(IndexedDBFactoryTest, MemoryBackingStoreLifetime) {
+  WebSecurityOrigin origin1 =
+      WebSecurityOrigin::createFromString("http://localhost:81");
+  WebSecurityOrigin origin2 =
+      WebSecurityOrigin::createFromString("http://localhost:82");
+
+  scoped_refptr<MockIDBFactory> factory = MockIDBFactory::Create();
+  scoped_refptr<IndexedDBBackingStore> mem_store1 =
+      factory->TestOpenBackingStore(origin1, base::FilePath());
+  // TODO(alecflett): Verify refcount indirectly.
+  //  EXPECT_EQ(2, mem_store1->RefCount());
+  scoped_refptr<IndexedDBBackingStore> mem_store2 =
+      factory->TestOpenBackingStore(origin1, base::FilePath());
+  EXPECT_EQ(mem_store1.get(), mem_store2.get());
+  // TODO(alecflett): Verify refcount indirectly.
+  // EXPECT_EQ(3, mem_store2->RefCount());
+
+  scoped_refptr<IndexedDBBackingStore> mem_store3 =
+      factory->TestOpenBackingStore(origin2, base::FilePath());
+  // TODO(alecflett): Verify refcount indirectly.
+  // EXPECT_EQ(2, mem_store3->RefCount());
+  // EXPECT_EQ(3, mem_store1->RefCount());
+
+  factory = NULL;
+  // TODO(alecflett): Verify refcount indirectly.
+  // EXPECT_EQ(2, mem_store1->RefCount());
+  // EXPECT_EQ(1, mem_store3->RefCount());
+}
+
+}  // namespace
+
+}  // namespace content