sys_string_conversions_unittest.cc revision c7f5f8508d98d5952d42ed7648c2a8f30a4da156 
1// Copyright (c) 2006-2008 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#include <locale.h>
6
7#include <string>
8
9#include "base/basictypes.h"
10#include "base/string_piece.h"
11#include "base/string_util.h"
12#include "base/sys_string_conversions.h"
13#include "testing/gtest/include/gtest/gtest.h"
14
15#ifdef WCHAR_T_IS_UTF32
16static const std::wstring kSysWideOldItalicLetterA = L"\x10300";
17#else
18static const std::wstring kSysWideOldItalicLetterA = L"\xd800\xdf00";
19#endif
20
21TEST(SysStrings, SysWideToUTF8) {
22  using base::SysWideToUTF8;
23  EXPECT_EQ("Hello, world", SysWideToUTF8(L"Hello, world"));
24  EXPECT_EQ("\xe4\xbd\xa0\xe5\xa5\xbd", SysWideToUTF8(L"\x4f60\x597d"));
25
26  // >16 bits
27  EXPECT_EQ("\xF0\x90\x8C\x80", SysWideToUTF8(kSysWideOldItalicLetterA));
28
29  // Error case. When Windows finds a UTF-16 character going off the end of
30  // a string, it just converts that literal value to UTF-8, even though this
31  // is invalid.
32  //
33  // This is what XP does, but Vista has different behavior, so we don't bother
34  // verifying it:
35  //EXPECT_EQ("\xE4\xBD\xA0\xED\xA0\x80zyxw",
36  //          SysWideToUTF8(L"\x4f60\xd800zyxw"));
37
38  // Test embedded NULLs.
39  std::wstring wide_null(L"a");
40  wide_null.push_back(0);
41  wide_null.push_back('b');
42
43  std::string expected_null("a");
44  expected_null.push_back(0);
45  expected_null.push_back('b');
46
47  EXPECT_EQ(expected_null, SysWideToUTF8(wide_null));
48}
49
50TEST(SysStrings, SysUTF8ToWide) {
51  using base::SysUTF8ToWide;
52  EXPECT_EQ(L"Hello, world", SysUTF8ToWide("Hello, world"));
53  EXPECT_EQ(L"\x4f60\x597d", SysUTF8ToWide("\xe4\xbd\xa0\xe5\xa5\xbd"));
54  // >16 bits
55  EXPECT_EQ(kSysWideOldItalicLetterA, SysUTF8ToWide("\xF0\x90\x8C\x80"));
56
57  // Error case. When Windows finds an invalid UTF-8 character, it just skips
58  // it. This seems weird because it's inconsistent with the reverse conversion.
59  //
60  // This is what XP does, but Vista has different behavior, so we don't bother
61  // verifying it:
62  //EXPECT_EQ(L"\x4f60zyxw", SysUTF8ToWide("\xe4\xbd\xa0\xe5\xa5zyxw"));
63
64  // Test embedded NULLs.
65  std::string utf8_null("a");
66  utf8_null.push_back(0);
67  utf8_null.push_back('b');
68
69  std::wstring expected_null(L"a");
70  expected_null.push_back(0);
71  expected_null.push_back('b');
72
73  EXPECT_EQ(expected_null, SysUTF8ToWide(utf8_null));
74}
75
76#if defined(OS_LINUX)  // Tests depend on setting a specific Linux locale.
77namespace {
78
79class ScopedSetLocale {
80 public:
81  explicit ScopedSetLocale(const char* locale) {
82    old_locale_ = setlocale(LC_ALL, NULL);
83    setlocale(LC_ALL, locale);
84  }
85  ~ScopedSetLocale() {
86    setlocale(LC_ALL, old_locale_.c_str());
87  }
88
89 private:
90  std::string old_locale_;
91};
92
93}  // namespace
94
95TEST(SysStrings, SysWideToNativeMB) {
96  using base::SysWideToNativeMB;
97  ScopedSetLocale locale("en_US.utf-8");
98  EXPECT_EQ("Hello, world", SysWideToNativeMB(L"Hello, world"));
99  EXPECT_EQ("\xe4\xbd\xa0\xe5\xa5\xbd", SysWideToNativeMB(L"\x4f60\x597d"));
100
101  // >16 bits
102  EXPECT_EQ("\xF0\x90\x8C\x80", SysWideToNativeMB(kSysWideOldItalicLetterA));
103
104  // Error case. When Windows finds a UTF-16 character going off the end of
105  // a string, it just converts that literal value to UTF-8, even though this
106  // is invalid.
107  //
108  // This is what XP does, but Vista has different behavior, so we don't bother
109  // verifying it:
110  //EXPECT_EQ("\xE4\xBD\xA0\xED\xA0\x80zyxw",
111  //          SysWideToNativeMB(L"\x4f60\xd800zyxw"));
112
113  // Test embedded NULLs.
114  std::wstring wide_null(L"a");
115  wide_null.push_back(0);
116  wide_null.push_back('b');
117
118  std::string expected_null("a");
119  expected_null.push_back(0);
120  expected_null.push_back('b');
121
122  EXPECT_EQ(expected_null, SysWideToNativeMB(wide_null));
123}
124
125// We assume the test is running in a UTF8 locale.
126TEST(SysStrings, SysNativeMBToWide) {
127  using base::SysNativeMBToWide;
128  ScopedSetLocale locale("en_US.utf-8");
129  EXPECT_EQ(L"Hello, world", SysNativeMBToWide("Hello, world"));
130  EXPECT_EQ(L"\x4f60\x597d", SysNativeMBToWide("\xe4\xbd\xa0\xe5\xa5\xbd"));
131  // >16 bits
132  EXPECT_EQ(kSysWideOldItalicLetterA, SysNativeMBToWide("\xF0\x90\x8C\x80"));
133
134  // Error case. When Windows finds an invalid UTF-8 character, it just skips
135  // it. This seems weird because it's inconsistent with the reverse conversion.
136  //
137  // This is what XP does, but Vista has different behavior, so we don't bother
138  // verifying it:
139  //EXPECT_EQ(L"\x4f60zyxw", SysNativeMBToWide("\xe4\xbd\xa0\xe5\xa5zyxw"));
140
141  // Test embedded NULLs.
142  std::string utf8_null("a");
143  utf8_null.push_back(0);
144  utf8_null.push_back('b');
145
146  std::wstring expected_null(L"a");
147  expected_null.push_back(0);
148  expected_null.push_back('b');
149
150  EXPECT_EQ(expected_null, SysNativeMBToWide(utf8_null));
151}
152
153static const wchar_t* const kConvertRoundtripCases[] = {
154  L"Google Video",
155  // "网页 图片 资讯更多 »"
156  L"\x7f51\x9875\x0020\x56fe\x7247\x0020\x8d44\x8baf\x66f4\x591a\x0020\x00bb",
157  //  "Παγκόσμιος Ιστός"
158  L"\x03a0\x03b1\x03b3\x03ba\x03cc\x03c3\x03bc\x03b9"
159  L"\x03bf\x03c2\x0020\x0399\x03c3\x03c4\x03cc\x03c2",
160  // "Поиск страниц на русском"
161  L"\x041f\x043e\x0438\x0441\x043a\x0020\x0441\x0442"
162  L"\x0440\x0430\x043d\x0438\x0446\x0020\x043d\x0430"
163  L"\x0020\x0440\x0443\x0441\x0441\x043a\x043e\x043c",
164  // "전체서비스"
165  L"\xc804\xccb4\xc11c\xbe44\xc2a4",
166
167  // Test characters that take more than 16 bits. This will depend on whether
168  // wchar_t is 16 or 32 bits.
169#if defined(WCHAR_T_IS_UTF16)
170  L"\xd800\xdf00",
171  // ?????  (Mathematical Alphanumeric Symbols (U+011d40 - U+011d44 : A,B,C,D,E)
172  L"\xd807\xdd40\xd807\xdd41\xd807\xdd42\xd807\xdd43\xd807\xdd44",
173#elif defined(WCHAR_T_IS_UTF32)
174  L"\x10300",
175  // ?????  (Mathematical Alphanumeric Symbols (U+011d40 - U+011d44 : A,B,C,D,E)
176  L"\x11d40\x11d41\x11d42\x11d43\x11d44",
177#endif
178};
179
180
181TEST(SysStrings, SysNativeMBAndWide) {
182  ScopedSetLocale locale("en_US.utf-8");
183  for (size_t i = 0; i < arraysize(kConvertRoundtripCases); ++i) {
184    std::wstring wide = kConvertRoundtripCases[i];
185    std::wstring trip = base::SysNativeMBToWide(base::SysWideToNativeMB(wide));
186    EXPECT_EQ(wide.size(), trip.size());
187    EXPECT_EQ(wide, trip);
188  }
189
190  // We assume our test is running in UTF-8, so double check through ICU.
191  for (size_t i = 0; i < arraysize(kConvertRoundtripCases); ++i) {
192    std::wstring wide = kConvertRoundtripCases[i];
193    std::wstring trip = base::SysNativeMBToWide(WideToUTF8(wide));
194    EXPECT_EQ(wide.size(), trip.size());
195    EXPECT_EQ(wide, trip);
196  }
197
198  for (size_t i = 0; i < arraysize(kConvertRoundtripCases); ++i) {
199    std::wstring wide = kConvertRoundtripCases[i];
200    std::wstring trip = UTF8ToWide(base::SysWideToNativeMB(wide));
201    EXPECT_EQ(wide.size(), trip.size());
202    EXPECT_EQ(wide, trip);
203  }
204}
205#endif  // OS_LINUX
206