chrome/common/importer/ie_importer_test_registry_overrider_win.h

   1 // Copyright (c) 2013 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 CHROME_COMMON_IMPORTER_IE_IMPORTER_TEST_REGISTRY_OVERRIDER_WIN_H_
   6 #define CHROME_COMMON_IMPORTER_IE_IMPORTER_TEST_REGISTRY_OVERRIDER_WIN_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/strings/string16.h"
  10
  11 // A helper class to let tests generate a random registry key to be used in
  12 // HKEY_CURRENT_USER in tests. After the key has been generated by constructing
  13 // an IEImporterTestRegistryOverrider, consumers in this process (or in any
  14 // child processes created after the key has been generated) can obtain the key
  15 // via GetTestRegistryOverride(). IEImporterTestRegistryOverrider will delete
  16 // the temporary key upon being deleted itself. Only one
  17 // IEImporterTestRegistryOverrider should live at once in a given process
  18 // hiearchy.
  19 class IEImporterTestRegistryOverrider {
  20  public:
  21   IEImporterTestRegistryOverrider();
  22   ~IEImporterTestRegistryOverrider();
  23
  24   // Returns a test key if one was chosen and set by a call to
  25   // SetTestRegistryOverride(); returns the empty string if none.
  26   static base::string16 GetTestRegistryOverride();
  27
  28  private:
  29   base::string16 temporary_key_;
  30
  31   DISALLOW_COPY_AND_ASSIGN(IEImporterTestRegistryOverrider);
  32 };
  33
  34 #endif  // CHROME_COMMON_IMPORTER_IE_IMPORTER_TEST_REGISTRY_OVERRIDER_WIN_H_