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| 1 // Copyright (c) 2010 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 "base/basictypes.h" | |
| 6 #include "base/logging.h" | |
| 7 #include "base/strings/string_piece.h" | |
| 8 #include "base/strings/string_util.h" | |
| 9 #include "base/strings/utf_string_conversions.h" | |
| 10 #include "testing/gtest/include/gtest/gtest.h" | |
| 11 | |
| 12 namespace base { | |
| 13 | |
| 14 namespace { | |
| 15 | |
| 16 const wchar_t* const kConvertRoundtripCases[] = { | |
| 17 L"Google Video", | |
| 18 // "网页 图片 资讯更多 »" | |
| 19 L"\x7f51\x9875\x0020\x56fe\x7247\x0020\x8d44\x8baf\x66f4\x591a\x0020\x00bb", | |
| 20 // "Παγκόσμιος Ιστός" | |
| 21 L"\x03a0\x03b1\x03b3\x03ba\x03cc\x03c3\x03bc\x03b9" | |
| 22 L"\x03bf\x03c2\x0020\x0399\x03c3\x03c4\x03cc\x03c2", | |
| 23 // "Поиск страниц на русском" | |
| 24 L"\x041f\x043e\x0438\x0441\x043a\x0020\x0441\x0442" | |
| 25 L"\x0440\x0430\x043d\x0438\x0446\x0020\x043d\x0430" | |
| 26 L"\x0020\x0440\x0443\x0441\x0441\x043a\x043e\x043c", | |
| 27 // "전체서비스" | |
| 28 L"\xc804\xccb4\xc11c\xbe44\xc2a4", | |
| 29 | |
| 30 // Test characters that take more than 16 bits. This will depend on whether | |
| 31 // wchar_t is 16 or 32 bits. | |
| 32 #if defined(WCHAR_T_IS_UTF16) | |
| 33 L"\xd800\xdf00", | |
| 34 // ????? (Mathematical Alphanumeric Symbols (U+011d40 - U+011d44 : A,B,C,D,E) | |
| 35 L"\xd807\xdd40\xd807\xdd41\xd807\xdd42\xd807\xdd43\xd807\xdd44", | |
| 36 #elif defined(WCHAR_T_IS_UTF32) | |
| 37 L"\x10300", | |
| 38 // ????? (Mathematical Alphanumeric Symbols (U+011d40 - U+011d44 : A,B,C,D,E) | |
| 39 L"\x11d40\x11d41\x11d42\x11d43\x11d44", | |
| 40 #endif | |
| 41 }; | |
| 42 | |
| 43 } // namespace | |
| 44 | |
| 45 TEST(UTFStringConversionsTest, ConvertUTF8AndWide) { | |
| 46 // we round-trip all the wide strings through UTF-8 to make sure everything | |
| 47 // agrees on the conversion. This uses the stream operators to test them | |
| 48 // simultaneously. | |
| 49 for (size_t i = 0; i < arraysize(kConvertRoundtripCases); ++i) { | |
| 50 std::ostringstream utf8; | |
| 51 utf8 << WideToUTF8(kConvertRoundtripCases[i]); | |
| 52 std::wostringstream wide; | |
| 53 wide << UTF8ToWide(utf8.str()); | |
| 54 | |
| 55 EXPECT_EQ(kConvertRoundtripCases[i], wide.str()); | |
| 56 } | |
| 57 } | |
| 58 | |
| 59 TEST(UTFStringConversionsTest, ConvertUTF8AndWideEmptyString) { | |
| 60 // An empty std::wstring should be converted to an empty std::string, | |
| 61 // and vice versa. | |
| 62 std::wstring wempty; | |
| 63 std::string empty; | |
| 64 EXPECT_EQ(empty, WideToUTF8(wempty)); | |
| 65 EXPECT_EQ(wempty, UTF8ToWide(empty)); | |
| 66 } | |
| 67 | |
| 68 TEST(UTFStringConversionsTest, ConvertUTF8ToWide) { | |
| 69 struct UTF8ToWideCase { | |
| 70 const char* utf8; | |
| 71 const wchar_t* wide; | |
| 72 bool success; | |
| 73 } convert_cases[] = { | |
| 74 // Regular UTF-8 input. | |
| 75 {"\xe4\xbd\xa0\xe5\xa5\xbd", L"\x4f60\x597d", true}, | |
| 76 // Non-character is passed through. | |
| 77 {"\xef\xbf\xbfHello", L"\xffffHello", true}, | |
| 78 // Truncated UTF-8 sequence. | |
| 79 {"\xe4\xa0\xe5\xa5\xbd", L"\xfffd\x597d", false}, | |
| 80 // Truncated off the end. | |
| 81 {"\xe5\xa5\xbd\xe4\xa0", L"\x597d\xfffd", false}, | |
| 82 // Non-shortest-form UTF-8. | |
| 83 {"\xf0\x84\xbd\xa0\xe5\xa5\xbd", L"\xfffd\x597d", false}, | |
| 84 // This UTF-8 character decodes to a UTF-16 surrogate, which is illegal. | |
| 85 {"\xed\xb0\x80", L"\xfffd", false}, | |
| 86 // Non-BMP characters. The second is a non-character regarded as valid. | |
| 87 // The result will either be in UTF-16 or UTF-32. | |
| 88 #if defined(WCHAR_T_IS_UTF16) | |
| 89 {"A\xF0\x90\x8C\x80z", L"A\xd800\xdf00z", true}, | |
| 90 {"A\xF4\x8F\xBF\xBEz", L"A\xdbff\xdffez", true}, | |
| 91 #elif defined(WCHAR_T_IS_UTF32) | |
| 92 {"A\xF0\x90\x8C\x80z", L"A\x10300z", true}, | |
| 93 {"A\xF4\x8F\xBF\xBEz", L"A\x10fffez", true}, | |
| 94 #endif | |
| 95 }; | |
| 96 | |
| 97 for (size_t i = 0; i < arraysize(convert_cases); i++) { | |
| 98 std::wstring converted; | |
| 99 EXPECT_EQ(convert_cases[i].success, | |
| 100 UTF8ToWide(convert_cases[i].utf8, | |
| 101 strlen(convert_cases[i].utf8), | |
| 102 &converted)); | |
| 103 std::wstring expected(convert_cases[i].wide); | |
| 104 EXPECT_EQ(expected, converted); | |
| 105 } | |
| 106 | |
| 107 // Manually test an embedded NULL. | |
| 108 std::wstring converted; | |
| 109 EXPECT_TRUE(UTF8ToWide("\00Z\t", 3, &converted)); | |
| 110 ASSERT_EQ(3U, converted.length()); | |
| 111 EXPECT_EQ(static_cast<wchar_t>(0), converted[0]); | |
| 112 EXPECT_EQ('Z', converted[1]); | |
| 113 EXPECT_EQ('\t', converted[2]); | |
| 114 | |
| 115 // Make sure that conversion replaces, not appends. | |
| 116 EXPECT_TRUE(UTF8ToWide("B", 1, &converted)); | |
| 117 ASSERT_EQ(1U, converted.length()); | |
| 118 EXPECT_EQ('B', converted[0]); | |
| 119 } | |
| 120 | |
| 121 #if defined(WCHAR_T_IS_UTF16) | |
| 122 // This test is only valid when wchar_t == UTF-16. | |
| 123 TEST(UTFStringConversionsTest, ConvertUTF16ToUTF8) { | |
| 124 struct WideToUTF8Case { | |
| 125 const wchar_t* utf16; | |
| 126 const char* utf8; | |
| 127 bool success; | |
| 128 } convert_cases[] = { | |
| 129 // Regular UTF-16 input. | |
| 130 {L"\x4f60\x597d", "\xe4\xbd\xa0\xe5\xa5\xbd", true}, | |
| 131 // Test a non-BMP character. | |
| 132 {L"\xd800\xdf00", "\xF0\x90\x8C\x80", true}, | |
| 133 // Non-characters are passed through. | |
| 134 {L"\xffffHello", "\xEF\xBF\xBFHello", true}, | |
| 135 {L"\xdbff\xdffeHello", "\xF4\x8F\xBF\xBEHello", true}, | |
| 136 // The first character is a truncated UTF-16 character. | |
| 137 {L"\xd800\x597d", "\xef\xbf\xbd\xe5\xa5\xbd", false}, | |
| 138 // Truncated at the end. | |
| 139 {L"\x597d\xd800", "\xe5\xa5\xbd\xef\xbf\xbd", false}, | |
| 140 }; | |
| 141 | |
| 142 for (int i = 0; i < arraysize(convert_cases); i++) { | |
| 143 std::string converted; | |
| 144 EXPECT_EQ(convert_cases[i].success, | |
| 145 WideToUTF8(convert_cases[i].utf16, | |
| 146 wcslen(convert_cases[i].utf16), | |
| 147 &converted)); | |
| 148 std::string expected(convert_cases[i].utf8); | |
| 149 EXPECT_EQ(expected, converted); | |
| 150 } | |
| 151 } | |
| 152 | |
| 153 #elif defined(WCHAR_T_IS_UTF32) | |
| 154 // This test is only valid when wchar_t == UTF-32. | |
| 155 TEST(UTFStringConversionsTest, ConvertUTF32ToUTF8) { | |
| 156 struct WideToUTF8Case { | |
| 157 const wchar_t* utf32; | |
| 158 const char* utf8; | |
| 159 bool success; | |
| 160 } convert_cases[] = { | |
| 161 // Regular 16-bit input. | |
| 162 {L"\x4f60\x597d", "\xe4\xbd\xa0\xe5\xa5\xbd", true}, | |
| 163 // Test a non-BMP character. | |
| 164 {L"A\x10300z", "A\xF0\x90\x8C\x80z", true}, | |
| 165 // Non-characters are passed through. | |
| 166 {L"\xffffHello", "\xEF\xBF\xBFHello", true}, | |
| 167 {L"\x10fffeHello", "\xF4\x8F\xBF\xBEHello", true}, | |
| 168 // Invalid Unicode code points. | |
| 169 {L"\xfffffffHello", "\xEF\xBF\xBDHello", false}, | |
| 170 // The first character is a truncated UTF-16 character. | |
| 171 {L"\xd800\x597d", "\xef\xbf\xbd\xe5\xa5\xbd", false}, | |
| 172 {L"\xdc01Hello", "\xef\xbf\xbdHello", false}, | |
| 173 }; | |
| 174 | |
| 175 for (size_t i = 0; i < arraysize(convert_cases); i++) { | |
| 176 std::string converted; | |
| 177 EXPECT_EQ(convert_cases[i].success, | |
| 178 WideToUTF8(convert_cases[i].utf32, | |
| 179 wcslen(convert_cases[i].utf32), | |
| 180 &converted)); | |
| 181 std::string expected(convert_cases[i].utf8); | |
| 182 EXPECT_EQ(expected, converted); | |
| 183 } | |
| 184 } | |
| 185 #endif // defined(WCHAR_T_IS_UTF32) | |
| 186 | |
| 187 TEST(UTFStringConversionsTest, ConvertMultiString) { | |
| 188 static char16 multi16[] = {'f', 'o', 'o', '\0', 'b', 'a', 'r', | |
| 189 '\0', 'b', 'a', 'z', '\0', '\0'}; | |
| 190 static char multi[] = { | |
| 191 'f', 'o', 'o', '\0', | |
| 192 'b', 'a', 'r', '\0', | |
| 193 'b', 'a', 'z', '\0', | |
| 194 '\0' | |
| 195 }; | |
| 196 string16 multistring16; | |
| 197 memcpy(WriteInto(&multistring16, arraysize(multi16)), multi16, | |
| 198 sizeof(multi16)); | |
| 199 EXPECT_EQ(arraysize(multi16) - 1, multistring16.length()); | |
| 200 std::string expected; | |
| 201 memcpy(WriteInto(&expected, arraysize(multi)), multi, sizeof(multi)); | |
| 202 EXPECT_EQ(arraysize(multi) - 1, expected.length()); | |
| 203 const std::string& converted = UTF16ToUTF8(multistring16); | |
| 204 EXPECT_EQ(arraysize(multi) - 1, converted.length()); | |
| 205 EXPECT_EQ(expected, converted); | |
| 206 } | |
| 207 | |
| 208 } // namespace base | |
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