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 // " " 19 L"\x7f51\x9875\x0020\x56fe\x7247\x0020\x8d44\x8baf\x66f4\x591a\x0020\x00bb", 20 // " " 21 L"\x03a0\x03b1\x03b3\x03ba\x03cc\x03c3\x03bc\x03b9" 22 L"\x03bf\x03c2\x0020\x0399\x03c3\x03c4\x03cc\x03c2", 23 // " " 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 // "" 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_UNSAFE(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_UNSAFE(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 wchar_t wmulti[] = { 189 L'f', L'o', L'o', L'\0', 190 L'b', L'a', L'r', L'\0', 191 L'b', L'a', L'z', L'\0', 192 L'\0' 193 }; 194 static char multi[] = { 195 'f', 'o', 'o', '\0', 196 'b', 'a', 'r', '\0', 197 'b', 'a', 'z', '\0', 198 '\0' 199 }; 200 std::wstring wmultistring; 201 memcpy(WriteInto(&wmultistring, arraysize(wmulti)), wmulti, sizeof(wmulti)); 202 EXPECT_EQ(arraysize(wmulti) - 1, wmultistring.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 = WideToUTF8(wmultistring); 207 EXPECT_EQ(arraysize(multi) - 1, converted.length()); 208 EXPECT_EQ(expected, converted); 209 } 210 211 } // base 212
