chromeos/system/fake_statistics_provider.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 CHROMEOS_SYSTEM_FAKE_STATISTICS_PROVIDER_H_
   6 #define CHROMEOS_SYSTEM_FAKE_STATISTICS_PROVIDER_H_
   7
   8 #include <map>
   9 #include <string>
  10
  11 #include "chromeos/system/statistics_provider.h"
  12
  13 namespace chromeos {
  14 namespace system {
  15
  16 // A fake StatisticsProvider implementation that is useful in tests.
  17 class FakeStatisticsProvider : public StatisticsProvider {
  18  public:
  19   FakeStatisticsProvider();
  20   ~FakeStatisticsProvider() override;
  21
  22   // StatisticsProvider implementation:
  23   void StartLoadingMachineStatistics(
  24       const scoped_refptr<base::TaskRunner>& file_task_runner,
  25       bool load_oem_manifest) override;
  26   bool GetMachineStatistic(const std::string& name,
  27                            std::string* result) override;
  28   bool HasMachineStatistic(const std::string& name) override;
  29   bool GetMachineFlag(const std::string& name, bool* result) override;
  30   bool HasMachineFlag(const std::string& name) override;
  31   void Shutdown() override;
  32
  33   void SetMachineStatistic(const std::string& key, const std::string& value);
  34   void ClearMachineStatistic(const std::string& key);
  35   void SetMachineFlag(const std::string& key, bool value);
  36   void ClearMachineFlag(const std::string& key);
  37
  38  private:
  39   std::map<std::string, std::string> machine_statistics_;
  40   std::map<std::string, bool> machine_flags_;
  41
  42   DISALLOW_COPY_AND_ASSIGN(FakeStatisticsProvider);
  43 };
  44
  45 // A convenience subclass that automatically registers itself as the test
  46 // StatisticsProvider during construction and cleans up at destruction.
  47 class ScopedFakeStatisticsProvider : public FakeStatisticsProvider {
  48  public:
  49   ScopedFakeStatisticsProvider();
  50   ~ScopedFakeStatisticsProvider() override;
  51
  52  private:
  53   DISALLOW_COPY_AND_ASSIGN(ScopedFakeStatisticsProvider);
  54 };
  55
  56 }  // namespace system
  57 }  // namespace chromeos
  58
  59 #endif  // CHROMEOS_SYSTEM_FAKE_STATISTICS_PROVIDER_H_