registry_test_data.h revision 5821806d5e7f356e8fa4b058a389a808ea183019 
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 CHROME_INSTALLER_UTIL_REGISTRY_TEST_DATA_H_
6#define CHROME_INSTALLER_UTIL_REGISTRY_TEST_DATA_H_
7
8#include <windows.h>
9
10#include <string>
11
12#include "base/basictypes.h"
13
14// A helper class for use by unit tests that need some registry space and data.
15// BEWARE: Instances of this class irrevocably and recursively delete keys and
16// values from the registry.  Carefully read the comments for Initialize and
17// Reset before use.
18class RegistryTestData {
19 public:
20  RegistryTestData();
21  // Invokes Reset() on its way out.
22  ~RegistryTestData();
23
24  // Resets this instance, deletes the key rooted at |base_path|, and then
25  // populates |base_path| with:
26  // \EmptyKey
27  // \NonEmptyKey (default value = "|base_path|\NonEmptyKey")
28  // \NonEmptyKey\Subkey ("SomeValue" = DWORD 1)
29  bool Initialize(HKEY root_key, const wchar_t* base_path);
30
31  // Deletes the key rooted at base_path and clears all state.
32  void Reset();
33
34  // Fires Google Test expectations in the hopes that |path| contains the same
35  // data as originally placed in |non_empty_key| by Initialize().
36  void ExpectMatchesNonEmptyKey(HKEY root_key, const wchar_t* path);
37
38  HKEY root_key() const { return root_key_; }
39  const std::wstring& base_path() const { return base_path_; }
40  const std::wstring& empty_key_path() const { return empty_key_path_; }
41  const std::wstring& non_empty_key_path() const { return non_empty_key_path_; }
42
43  // Fires Google Test expectations in the hopes that |path| is an empty key
44  // (exists but has no values or subkeys).
45  static void ExpectEmptyKey(HKEY root_key, const wchar_t* path);
46
47 private:
48  static bool DeleteKey(HKEY root_key, const wchar_t* path);
49
50  HKEY root_key_;
51  std::wstring base_path_;
52  std::wstring empty_key_path_;
53  std::wstring non_empty_key_path_;
54
55  DISALLOW_COPY_AND_ASSIGN(RegistryTestData);
56};
57
58#endif  // CHROME_INSTALLER_UTIL_REGISTRY_TEST_DATA_H_
59