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| 1 // Copyright (c) 2011 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 BASE_TEST_TEST_REG_UTIL_WIN_H_ | |
| 6 #define BASE_TEST_TEST_REG_UTIL_WIN_H_ | |
| 7 | |
| 8 // Registry utility functions used only by tests. | |
| 9 | |
| 10 #include "base/basictypes.h" | |
| 11 #include "base/memory/scoped_vector.h" | |
| 12 #include "base/strings/string16.h" | |
| 13 #include "base/time/time.h" | |
| 14 #include "base/win/registry.h" | |
| 15 | |
| 16 namespace registry_util { | |
| 17 | |
| 18 // Allows a test to easily override registry hives so that it can start from a | |
| 19 // known good state, or make sure to not leave any side effects once the test | |
| 20 // completes. This supports parallel tests. All the overrides are scoped to the | |
| 21 // lifetime of the override manager. Destroy the manager to undo the overrides. | |
| 22 // | |
| 23 // Overridden hives use keys stored at, for instance: | |
| 24 // HKCU\Software\Chromium\TempTestKeys\ | |
| 25 // 13028145911617809$02AB211C-CF73-478D-8D91-618E11998AED | |
| 26 // The key path are comprises of: | |
| 27 // - The test key root, HKCU\Software\Chromium\TempTestKeys\ | |
| 28 // - The base::Time::ToInternalValue of the creation time. This is used to | |
| 29 // delete stale keys left over from crashed tests. | |
| 30 // - A GUID used for preventing name collisions (although unlikely) between | |
| 31 // two RegistryOverrideManagers created with the same timestamp. | |
| 32 class RegistryOverrideManager { | |
| 33 public: | |
| 34 RegistryOverrideManager(); | |
| 35 ~RegistryOverrideManager(); | |
| 36 | |
| 37 // Override the given registry hive using a randomly generated temporary key. | |
| 38 // Multiple overrides to the same hive are not supported and lead to undefined | |
| 39 // behavior. | |
| 40 void OverrideRegistry(HKEY override); | |
| 41 | |
| 42 private: | |
| 43 friend class RegistryOverrideManagerTest; | |
| 44 | |
| 45 // Keeps track of one override. | |
| 46 class ScopedRegistryKeyOverride { | |
| 47 public: | |
| 48 ScopedRegistryKeyOverride(HKEY override, const base::string16& key_path); | |
| 49 ~ScopedRegistryKeyOverride(); | |
| 50 | |
| 51 private: | |
| 52 HKEY override_; | |
| 53 base::win::RegKey temp_key_; | |
| 54 | |
| 55 DISALLOW_COPY_AND_ASSIGN(ScopedRegistryKeyOverride); | |
| 56 }; | |
| 57 | |
| 58 // Used for testing only. | |
| 59 RegistryOverrideManager(const base::Time& timestamp, | |
| 60 const base::string16& test_key_root); | |
| 61 | |
| 62 base::Time timestamp_; | |
| 63 base::string16 guid_; | |
| 64 | |
| 65 base::string16 test_key_root_; | |
| 66 ScopedVector<ScopedRegistryKeyOverride> overrides_; | |
| 67 | |
| 68 DISALLOW_COPY_AND_ASSIGN(RegistryOverrideManager); | |
| 69 }; | |
| 70 | |
| 71 // Generates a temporary key path that will be eventually deleted | |
| 72 // automatically if the process crashes. | |
| 73 base::string16 GenerateTempKeyPath(); | |
| 74 | |
| 75 } // namespace registry_util | |
| 76 | |
| 77 #endif // BASE_TEST_TEST_REG_UTIL_WIN_H_ | |
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Chromium Code Reviews
Issue 1446363003:
Deleted OS_WIN and all Windows specific files from base. (Closed)
Base URL: https://github.com/domokit/mojo.git@base_tests