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      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_
     35