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// Copyright 2014 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.
#ifndef COMPONENTS_LEVELDB_PROTO_TESTING_FAKE_DB_H_
#define COMPONENTS_LEVELDB_PROTO_TESTING_FAKE_DB_H_
#include <string>
#include <utility>
#include <vector>
#include "base/bind.h"
#include "base/callback.h"
#include "base/files/file_path.h"
#include "base/memory/scoped_ptr.h"
#include "components/leveldb_proto/proto_database.h"
namespace leveldb_proto {
namespace test {
template <typename T>
class FakeDB : public ProtoDatabase<T> {
using Callback = base::Callback<void(bool)>;
public:
using EntryMap = typename base::hash_map<std::string, T>;
explicit FakeDB(EntryMap* db);
~FakeDB() override;
// ProtoDatabase implementation.
void Init(const char* client_name,
const base::FilePath& database_dir,
const typename ProtoDatabase<T>::InitCallback& callback) override;
void UpdateEntries(
scoped_ptr<typename ProtoDatabase<T>::KeyEntryVector> entries_to_save,
scoped_ptr<std::vector<std::string>> keys_to_remove,
const typename ProtoDatabase<T>::UpdateCallback& callback) override;
void LoadEntries(
const typename ProtoDatabase<T>::LoadCallback& callback) override;
void Destroy(
const typename ProtoDatabase<T>::DestroyCallback& callback) override;
base::FilePath& GetDirectory();
void InitCallback(bool success);
void LoadCallback(bool success);
void UpdateCallback(bool success);
static base::FilePath DirectoryForTestDB();
private:
static void RunLoadCallback(
const typename ProtoDatabase<T>::LoadCallback& callback,
scoped_ptr<typename std::vector<T>> entries,
bool success);
base::FilePath dir_;
EntryMap* db_;
Callback init_callback_;
Callback load_callback_;
Callback update_callback_;
};
template <typename T>
FakeDB<T>::FakeDB(EntryMap* db)
: db_(db) {}
template <typename T>
FakeDB<T>::~FakeDB() {}
template <typename T>
void FakeDB<T>::Init(const char* client_name,
const base::FilePath& database_dir,
const typename ProtoDatabase<T>::InitCallback& callback) {
dir_ = database_dir;
init_callback_ = callback;
}
template <typename T>
void FakeDB<T>::UpdateEntries(
scoped_ptr<typename ProtoDatabase<T>::KeyEntryVector> entries_to_save,
scoped_ptr<std::vector<std::string>> keys_to_remove,
const typename ProtoDatabase<T>::UpdateCallback& callback) {
for (const auto& pair : *entries_to_save)
(*db_)[pair.first] = pair.second;
for (const auto& key : *keys_to_remove)
db_->erase(key);
update_callback_ = callback;
}
template <typename T>
void FakeDB<T>::LoadEntries(
const typename ProtoDatabase<T>::LoadCallback& callback) {
scoped_ptr<std::vector<T>> entries(new std::vector<T>());
for (const auto& pair : *db_)
entries->push_back(pair.second);
load_callback_ =
base::Bind(RunLoadCallback, callback, base::Passed(&entries));
}
template <typename T>
void FakeDB<T>::Destroy(
const typename ProtoDatabase<T>::DestroyCallback& callback) {
}
template <typename T>
base::FilePath& FakeDB<T>::GetDirectory() {
return dir_;
}
template <typename T>
void FakeDB<T>::InitCallback(bool success) {
init_callback_.Run(success);
init_callback_.Reset();
}
template <typename T>
void FakeDB<T>::LoadCallback(bool success) {
load_callback_.Run(success);
load_callback_.Reset();
}
template <typename T>
void FakeDB<T>::UpdateCallback(bool success) {
update_callback_.Run(success);
update_callback_.Reset();
}
// static
template <typename T>
void FakeDB<T>::RunLoadCallback(
const typename ProtoDatabase<T>::LoadCallback& callback,
scoped_ptr<typename std::vector<T>> entries,
bool success) {
callback.Run(success, std::move(entries));
}
// static
template <typename T>
base::FilePath FakeDB<T>::DirectoryForTestDB() {
return base::FilePath(FILE_PATH_LITERAL("/fake/path"));
}
} // namespace test
} // namespace leveldb_proto
#endif // COMPONENTS_LEVELDB_PROTO_TESTING_FAKE_DB_H_
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