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 <stddef.h> 6 7 #include "base/logging.h" 8 #include "base/macros.h" 9 #include "base/strings/string_piece.h" 10 #include "base/strings/string_util.h" 11 #include "base/strings/utf_string_conversions.h" 12 #include "build/build_config.h" 13 #include "testing/gtest/include/gtest/gtest.h" 14 15 namespace base { 16 17 namespace { 18 19 const wchar_t* const kConvertRoundtripCases[] = { 20 L"Google Video", 21 // " " 22 L"\x7f51\x9875\x0020\x56fe\x7247\x0020\x8d44\x8baf\x66f4\x591a\x0020\x00bb", 23 // " " 24 L"\x03a0\x03b1\x03b3\x03ba\x03cc\x03c3\x03bc\x03b9" 25 L"\x03bf\x03c2\x0020\x0399\x03c3\x03c4\x03cc\x03c2", 26 // " " 27 L"\x041f\x043e\x0438\x0441\x043a\x0020\x0441\x0442" 28 L"\x0440\x0430\x043d\x0438\x0446\x0020\x043d\x0430" 29 L"\x0020\x0440\x0443\x0441\x0441\x043a\x043e\x043c", 30 // "" 31 L"\xc804\xccb4\xc11c\xbe44\xc2a4", 32 33 // Test characters that take more than 16 bits. This will depend on whether 34 // wchar_t is 16 or 32 bits. 35 #if defined(WCHAR_T_IS_UTF16) 36 L"\xd800\xdf00", 37 // ????? (Mathematical Alphanumeric Symbols (U+011d40 - U+011d44 : A,B,C,D,E) 38 L"\xd807\xdd40\xd807\xdd41\xd807\xdd42\xd807\xdd43\xd807\xdd44", 39 #elif defined(WCHAR_T_IS_UTF32) 40 L"\x10300", 41 // ????? (Mathematical Alphanumeric Symbols (U+011d40 - U+011d44 : A,B,C,D,E) 42 L"\x11d40\x11d41\x11d42\x11d43\x11d44", 43 #endif 44 }; 45 46 } // namespace 47 48 TEST(UTFStringConversionsTest, ConvertUTF8AndWide) { 49 // we round-trip all the wide strings through UTF-8 to make sure everything 50 // agrees on the conversion. This uses the stream operators to test them 51 // simultaneously. 52 for (size_t i = 0; i < arraysize(kConvertRoundtripCases); ++i) { 53 std::ostringstream utf8; 54 utf8 << WideToUTF8(kConvertRoundtripCases[i]); 55 std::wostringstream wide; 56 wide << UTF8ToWide(utf8.str()); 57 58 EXPECT_EQ(kConvertRoundtripCases[i], wide.str()); 59 } 60 } 61 62 TEST(UTFStringConversionsTest, ConvertUTF8AndWideEmptyString) { 63 // An empty std::wstring should be converted to an empty std::string, 64 // and vice versa. 65 std::wstring wempty; 66 std::string empty; 67 EXPECT_EQ(empty, WideToUTF8(wempty)); 68 EXPECT_EQ(wempty, UTF8ToWide(empty)); 69 } 70 71 TEST(UTFStringConversionsTest, ConvertUTF8ToWide) { 72 struct UTF8ToWideCase { 73 const char* utf8; 74 const wchar_t* wide; 75 bool success; 76 } convert_cases[] = { 77 // Regular UTF-8 input. 78 {"\xe4\xbd\xa0\xe5\xa5\xbd", L"\x4f60\x597d", true}, 79 // Non-character is passed through. 80 {"\xef\xbf\xbfHello", L"\xffffHello", true}, 81 // Truncated UTF-8 sequence. 82 {"\xe4\xa0\xe5\xa5\xbd", L"\xfffd\x597d", false}, 83 // Truncated off the end. 84 {"\xe5\xa5\xbd\xe4\xa0", L"\x597d\xfffd", false}, 85 // Non-shortest-form UTF-8. 86 {"\xf0\x84\xbd\xa0\xe5\xa5\xbd", L"\xfffd\x597d", false}, 87 // This UTF-8 character decodes to a UTF-16 surrogate, which is illegal. 88 {"\xed\xb0\x80", L"\xfffd", false}, 89 // Non-BMP characters. The second is a non-character regarded as valid. 90 // The result will either be in UTF-16 or UTF-32. 91 #if defined(WCHAR_T_IS_UTF16) 92 {"A\xF0\x90\x8C\x80z", L"A\xd800\xdf00z", true}, 93 {"A\xF4\x8F\xBF\xBEz", L"A\xdbff\xdffez", true}, 94 #elif defined(WCHAR_T_IS_UTF32) 95 {"A\xF0\x90\x8C\x80z", L"A\x10300z", true}, 96 {"A\xF4\x8F\xBF\xBEz", L"A\x10fffez", true}, 97 #endif 98 }; 99 100 for (size_t i = 0; i < arraysize(convert_cases); i++) { 101 std::wstring converted; 102 EXPECT_EQ(convert_cases[i].success, 103 UTF8ToWide(convert_cases[i].utf8, 104 strlen(convert_cases[i].utf8), 105 &converted)); 106 std::wstring expected(convert_cases[i].wide); 107 EXPECT_EQ(expected, converted); 108 } 109 110 // Manually test an embedded NULL. 111 std::wstring converted; 112 EXPECT_TRUE(UTF8ToWide("\00Z\t", 3, &converted)); 113 ASSERT_EQ(3U, converted.length()); 114 EXPECT_EQ(static_cast<wchar_t>(0), converted[0]); 115 EXPECT_EQ('Z', converted[1]); 116 EXPECT_EQ('\t', converted[2]); 117 118 // Make sure that conversion replaces, not appends. 119 EXPECT_TRUE(UTF8ToWide("B", 1, &converted)); 120 ASSERT_EQ(1U, converted.length()); 121 EXPECT_EQ('B', converted[0]); 122 } 123 124 #if defined(WCHAR_T_IS_UTF16) 125 // This test is only valid when wchar_t == UTF-16. 126 TEST(UTFStringConversionsTest, ConvertUTF16ToUTF8) { 127 struct WideToUTF8Case { 128 const wchar_t* utf16; 129 const char* utf8; 130 bool success; 131 } convert_cases[] = { 132 // Regular UTF-16 input. 133 {L"\x4f60\x597d", "\xe4\xbd\xa0\xe5\xa5\xbd", true}, 134 // Test a non-BMP character. 135 {L"\xd800\xdf00", "\xF0\x90\x8C\x80", true}, 136 // Non-characters are passed through. 137 {L"\xffffHello", "\xEF\xBF\xBFHello", true}, 138 {L"\xdbff\xdffeHello", "\xF4\x8F\xBF\xBEHello", true}, 139 // The first character is a truncated UTF-16 character. 140 {L"\xd800\x597d", "\xef\xbf\xbd\xe5\xa5\xbd", false}, 141 // Truncated at the end. 142 {L"\x597d\xd800", "\xe5\xa5\xbd\xef\xbf\xbd", false}, 143 }; 144 145 for (const auto& test : convert_cases) { 146 std::string converted; 147 EXPECT_EQ(test.success, 148 WideToUTF8(test.utf16, wcslen(test.utf16), &converted)); 149 std::string expected(test.utf8); 150 EXPECT_EQ(expected, converted); 151 } 152 } 153 154 #elif defined(WCHAR_T_IS_UTF32) 155 // This test is only valid when wchar_t == UTF-32. 156 TEST(UTFStringConversionsTest, ConvertUTF32ToUTF8) { 157 struct WideToUTF8Case { 158 const wchar_t* utf32; 159 const char* utf8; 160 bool success; 161 } convert_cases[] = { 162 // Regular 16-bit input. 163 {L"\x4f60\x597d", "\xe4\xbd\xa0\xe5\xa5\xbd", true}, 164 // Test a non-BMP character. 165 {L"A\x10300z", "A\xF0\x90\x8C\x80z", true}, 166 // Non-characters are passed through. 167 {L"\xffffHello", "\xEF\xBF\xBFHello", true}, 168 {L"\x10fffeHello", "\xF4\x8F\xBF\xBEHello", true}, 169 // Invalid Unicode code points. 170 {L"\xfffffffHello", "\xEF\xBF\xBDHello", false}, 171 // The first character is a truncated UTF-16 character. 172 {L"\xd800\x597d", "\xef\xbf\xbd\xe5\xa5\xbd", false}, 173 {L"\xdc01Hello", "\xef\xbf\xbdHello", false}, 174 }; 175 176 for (const auto& test : convert_cases) { 177 std::string converted; 178 EXPECT_EQ(test.success, 179 WideToUTF8(test.utf32, wcslen(test.utf32), &converted)); 180 std::string expected(test.utf8); 181 EXPECT_EQ(expected, converted); 182 } 183 } 184 #endif // defined(WCHAR_T_IS_UTF32) 185 186 TEST(UTFStringConversionsTest, ConvertMultiString) { 187 static char16 multi16[] = { 188 'f', 'o', 'o', '\0', 189 'b', 'a', 'r', '\0', 190 'b', 'a', 'z', '\0', 191 '\0' 192 }; 193 static char multi[] = { 194 'f', 'o', 'o', '\0', 195 'b', 'a', 'r', '\0', 196 'b', 'a', 'z', '\0', 197 '\0' 198 }; 199 string16 multistring16; 200 memcpy(WriteInto(&multistring16, arraysize(multi16)), multi16, 201 sizeof(multi16)); 202 EXPECT_EQ(arraysize(multi16) - 1, multistring16.length()); 203 std::string expected; 204 memcpy(WriteInto(&expected, arraysize(multi)), multi, sizeof(multi)); 205 EXPECT_EQ(arraysize(multi) - 1, expected.length()); 206 const std::string& converted = UTF16ToUTF8(multistring16); 207 EXPECT_EQ(arraysize(multi) - 1, converted.length()); 208 EXPECT_EQ(expected, converted); 209 } 210 211 } // namespace base 212
