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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_SERVICES_STORAGE_INDEXED_DB_SCOPES_LEVELDB_SCOPES_TEST_UTILS_H_
#define COMPONENTS_SERVICES_STORAGE_INDEXED_DB_SCOPES_LEVELDB_SCOPES_TEST_UTILS_H_
#include "base/files/scoped_temp_dir.h"
#include "base/functional/callback.h"
#include "base/test/task_environment.h"
#include "base/threading/thread_restrictions.h"
#include "components/services/storage/indexed_db/leveldb/fake_leveldb_factory.h"
#include "components/services/storage/indexed_db/leveldb/leveldb_state.h"
#include "components/services/storage/indexed_db/locks/partitioned_lock_manager.h"
#include "components/services/storage/indexed_db/scopes/leveldb_scopes_coding.h"
#include "components/services/storage/indexed_db/scopes/scopes_metadata.pb.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/leveldatabase/src/include/leveldb/slice.h"
#include "third_party/leveldatabase/src/include/leveldb/status.h"
namespace content::indexed_db {
class LevelDBScopesTestBase : public testing::Test {
public:
static constexpr const size_t kWriteBatchSizeForTesting = 1024;
LevelDBScopesTestBase();
~LevelDBScopesTestBase() override;
void SetUp() override;
// Ensures that |leveldb_| is destroyed correctly, and all contents are
// deleted off disk.
void TearDown() override;
// Destroys the leveldb files.
leveldb::Status DestroyDB();
// Ensures that |leveldb_| is destroyed correctly, but doesn't delete the
// database on disk.
void CloseScopesAndDestroyLevelDBState();
// Initializes |leveldb_| to be a read database backed on disk.
void SetUpRealDatabase();
// Initializes |leveldb_| to be a database that will break when |callback| is
// called, with the given status.
void SetUpBreakableDB(base::OnceCallback<void(leveldb::Status)>* callback);
// Initializes |leveldb_| to be a flaky database that will
void SetUpFlakyDB(std::queue<FakeLevelDBFactory::FlakePoint> flake_points);
// Writes |metadata_buffer_| to disk.
void WriteScopesMetadata(int64_t scope_number, bool ignore_cleanup_tasks);
// Writes |undo_task_buffer_| to disk.
void WriteUndoTask(int64_t scope_number, int64_t sequence_number);
// Writes |cleanup_task_buffer_| to disk.
void WriteCleanupTask(int64_t scope_number, int64_t sequence_number);
// Writes a large value to the given key (|large_string_|).
void WriteLargeValue(const std::string& key);
// Loads the given key into |value_buffer_|.
leveldb::Status LoadAt(const std::string& key);
// Loads the scope metadata into |value_buffer_|.
leveldb::Status LoadScopeMetadata(int64_t scope_number);
// Loads the undo task into |value_buffer_|.
leveldb::Status LoadUndoTask(int64_t scope_number, int64_t sequence_number);
// Loads the cleanup task into |value_buffer_|.
leveldb::Status LoadCleanupTask(int64_t scope_number,
int64_t sequence_number);
// Returns if the database doesn't have any entries with the given key prefix.
bool IsPrefixedRangeEmptyInDB(leveldb::Slice key);
// Returns if all of the scope log data and metadata is gone.
bool IsScopeCleanedUp(int64_t scope_number);
// Returns if any scope data exists, including metadata or log data (other
// than global metadata).
bool ScopeDataExistsOnDisk();
// Creates a shared lock request from |simple_lock_begin_| to
// |simple_lock_end_|.
PartitionedLockManager::PartitionedLockRequest CreateSimpleSharedLock();
// Creates a exclusive lock request from |simple_lock_begin_| to
// |simple_lock_end_|.
PartitionedLockManager::PartitionedLockRequest CreateSimpleExclusiveLock();
PartitionedLockManager::PartitionedLockRequest CreateSharedLock(int i);
PartitionedLockManager::PartitionedLockRequest CreateExclusiveLock(int i);
const base::FilePath& DatabaseDirFilePath();
leveldb::Status CreateAndSaveLevelDBState();
protected:
base::ScopedAllowBaseSyncPrimitivesForTesting allow_;
// Ensure that the ScopedTempDir outlives the TaskEnvironment since the latter
// may need to run cleanup tasks that close files residing in the former.
base::ScopedTempDir temp_directory_;
base::test::TaskEnvironment task_env_;
// For use with calling leveldb_->RequestDestruction(...);
base::WaitableEvent leveldb_close_event_;
const std::string simple_lock_begin_ = "0000000001";
const std::string simple_lock_end_ = "0000000010";
const std::vector<uint8_t> metadata_prefix_ = {'a'};
const std::vector<uint8_t> db_prefix_ = {'b'};
scoped_refptr<LevelDBState> leveldb_;
std::string large_string_;
LevelDBScopesUndoTask undo_task_buffer_;
LevelDBScopesCleanupTask cleanup_task_buffer_;
LevelDBScopesScopeMetadata metadata_buffer_;
ScopesEncoder scopes_encoder_;
std::string value_buffer_;
};
} // namespace content::indexed_db
#endif // COMPONENTS_SERVICES_STORAGE_INDEXED_DB_SCOPES_LEVELDB_SCOPES_TEST_UTILS_H_
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