common/fake_prefs.h

// Copyright (c) 2013 The Chromium OS 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 POWER_MANAGER_COMMON_FAKE_PREFS_H_
#define POWER_MANAGER_COMMON_FAKE_PREFS_H_

#include <map>
#include <string>

#include <base/basictypes.h>
#include <base/compiler_specific.h>

#include "power_manager/common/prefs.h"

namespace power_manager {

// Fake implementation of PrefsInterface for tests that just stores prefs
// in-memory.
class FakePrefs : public PrefsInterface {
 public:
  FakePrefs();
  virtual ~FakePrefs();

  // Deletes |name| from |*_prefs_|.
  void Unset(const std::string& name);

  // Notifies |observers_| that a pref has changed.
  void NotifyObservers(const std::string& name);

  // PrefsInterface implementation:
  virtual void AddObserver(PrefsObserver* observer) OVERRIDE;
  virtual void RemoveObserver(PrefsObserver* observer) OVERRIDE;
  virtual bool GetString(const std::string& name, std::string* value) OVERRIDE;
  virtual bool GetInt64(const std::string& name, int64* value) OVERRIDE;
  virtual bool GetDouble(const std::string& name, double* value) OVERRIDE;
  virtual bool GetBool(const std::string& name, bool* value) OVERRIDE;
  virtual void SetString(const std::string& name,
                         const std::string& value) OVERRIDE;
  virtual void SetInt64(const std::string& name, int64 value) OVERRIDE;
  virtual void SetDouble(const std::string& name, double value) OVERRIDE;

 private:
  ObserverList<PrefsObserver> observers_;

  std::map<std::string, int64> int64_prefs_;
  std::map<std::string, double> double_prefs_;
  std::map<std::string, std::string> string_prefs_;

  DISALLOW_COPY_AND_ASSIGN(FakePrefs);
};

}  // namespace power_manager

#endif  // POWER_MANAGER_COMMON_FAKE_PREFS_H_