212 lines
7.2 KiB
C++
212 lines
7.2 KiB
C++
// Copyright (c) 2010 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/basictypes.h"
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#include "base/logging.h"
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#include "base/strings/string_piece.h"
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#include "base/strings/string_util.h"
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#include "base/strings/utf_string_conversions.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace base {
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namespace {
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const wchar_t* const kConvertRoundtripCases[] = {
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L"Google Video",
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// "网页 图片 资讯更多 »"
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L"\x7f51\x9875\x0020\x56fe\x7247\x0020\x8d44\x8baf\x66f4\x591a\x0020\x00bb",
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// "Παγκόσμιος Ιστός"
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L"\x03a0\x03b1\x03b3\x03ba\x03cc\x03c3\x03bc\x03b9"
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L"\x03bf\x03c2\x0020\x0399\x03c3\x03c4\x03cc\x03c2",
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// "Поиск страниц на русском"
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L"\x041f\x043e\x0438\x0441\x043a\x0020\x0441\x0442"
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L"\x0440\x0430\x043d\x0438\x0446\x0020\x043d\x0430"
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L"\x0020\x0440\x0443\x0441\x0441\x043a\x043e\x043c",
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// "전체서비스"
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L"\xc804\xccb4\xc11c\xbe44\xc2a4",
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// Test characters that take more than 16 bits. This will depend on whether
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// wchar_t is 16 or 32 bits.
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#if defined(WCHAR_T_IS_UTF16)
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L"\xd800\xdf00",
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// ????? (Mathematical Alphanumeric Symbols (U+011d40 - U+011d44 : A,B,C,D,E)
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L"\xd807\xdd40\xd807\xdd41\xd807\xdd42\xd807\xdd43\xd807\xdd44",
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#elif defined(WCHAR_T_IS_UTF32)
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L"\x10300",
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// ????? (Mathematical Alphanumeric Symbols (U+011d40 - U+011d44 : A,B,C,D,E)
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L"\x11d40\x11d41\x11d42\x11d43\x11d44",
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#endif
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};
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} // namespace
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TEST(UTFStringConversionsTest, ConvertUTF8AndWide) {
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// we round-trip all the wide strings through UTF-8 to make sure everything
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// agrees on the conversion. This uses the stream operators to test them
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// simultaneously.
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for (size_t i = 0; i < arraysize(kConvertRoundtripCases); ++i) {
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std::ostringstream utf8;
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utf8 << WideToUTF8(kConvertRoundtripCases[i]);
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std::wostringstream wide;
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wide << UTF8ToWide(utf8.str());
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EXPECT_EQ(kConvertRoundtripCases[i], wide.str());
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}
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}
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TEST(UTFStringConversionsTest, ConvertUTF8AndWideEmptyString) {
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// An empty std::wstring should be converted to an empty std::string,
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// and vice versa.
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std::wstring wempty;
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std::string empty;
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EXPECT_EQ(empty, WideToUTF8(wempty));
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EXPECT_EQ(wempty, UTF8ToWide(empty));
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}
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TEST(UTFStringConversionsTest, ConvertUTF8ToWide) {
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struct UTF8ToWideCase {
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const char* utf8;
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const wchar_t* wide;
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bool success;
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} convert_cases[] = {
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// Regular UTF-8 input.
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{"\xe4\xbd\xa0\xe5\xa5\xbd", L"\x4f60\x597d", true},
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// Non-character is passed through.
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{"\xef\xbf\xbfHello", L"\xffffHello", true},
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// Truncated UTF-8 sequence.
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{"\xe4\xa0\xe5\xa5\xbd", L"\xfffd\x597d", false},
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// Truncated off the end.
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{"\xe5\xa5\xbd\xe4\xa0", L"\x597d\xfffd", false},
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// Non-shortest-form UTF-8.
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{"\xf0\x84\xbd\xa0\xe5\xa5\xbd", L"\xfffd\x597d", false},
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// This UTF-8 character decodes to a UTF-16 surrogate, which is illegal.
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{"\xed\xb0\x80", L"\xfffd", false},
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// Non-BMP characters. The second is a non-character regarded as valid.
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// The result will either be in UTF-16 or UTF-32.
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#if defined(WCHAR_T_IS_UTF16)
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{"A\xF0\x90\x8C\x80z", L"A\xd800\xdf00z", true},
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{"A\xF4\x8F\xBF\xBEz", L"A\xdbff\xdffez", true},
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#elif defined(WCHAR_T_IS_UTF32)
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{"A\xF0\x90\x8C\x80z", L"A\x10300z", true},
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{"A\xF4\x8F\xBF\xBEz", L"A\x10fffez", true},
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#endif
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};
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for (size_t i = 0; i < ARRAYSIZE_UNSAFE(convert_cases); i++) {
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std::wstring converted;
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EXPECT_EQ(convert_cases[i].success,
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UTF8ToWide(convert_cases[i].utf8,
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strlen(convert_cases[i].utf8),
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&converted));
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std::wstring expected(convert_cases[i].wide);
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EXPECT_EQ(expected, converted);
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}
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// Manually test an embedded NULL.
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std::wstring converted;
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EXPECT_TRUE(UTF8ToWide("\00Z\t", 3, &converted));
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ASSERT_EQ(3U, converted.length());
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EXPECT_EQ(static_cast<wchar_t>(0), converted[0]);
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EXPECT_EQ('Z', converted[1]);
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EXPECT_EQ('\t', converted[2]);
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// Make sure that conversion replaces, not appends.
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EXPECT_TRUE(UTF8ToWide("B", 1, &converted));
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ASSERT_EQ(1U, converted.length());
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EXPECT_EQ('B', converted[0]);
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}
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#if defined(WCHAR_T_IS_UTF16)
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// This test is only valid when wchar_t == UTF-16.
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TEST(UTFStringConversionsTest, ConvertUTF16ToUTF8) {
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struct WideToUTF8Case {
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const wchar_t* utf16;
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const char* utf8;
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bool success;
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} convert_cases[] = {
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// Regular UTF-16 input.
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{L"\x4f60\x597d", "\xe4\xbd\xa0\xe5\xa5\xbd", true},
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// Test a non-BMP character.
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{L"\xd800\xdf00", "\xF0\x90\x8C\x80", true},
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// Non-characters are passed through.
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{L"\xffffHello", "\xEF\xBF\xBFHello", true},
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{L"\xdbff\xdffeHello", "\xF4\x8F\xBF\xBEHello", true},
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// The first character is a truncated UTF-16 character.
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{L"\xd800\x597d", "\xef\xbf\xbd\xe5\xa5\xbd", false},
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// Truncated at the end.
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{L"\x597d\xd800", "\xe5\xa5\xbd\xef\xbf\xbd", false},
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};
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for (int i = 0; i < arraysize(convert_cases); i++) {
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std::string converted;
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EXPECT_EQ(convert_cases[i].success,
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WideToUTF8(convert_cases[i].utf16,
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wcslen(convert_cases[i].utf16),
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&converted));
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std::string expected(convert_cases[i].utf8);
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EXPECT_EQ(expected, converted);
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}
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}
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#elif defined(WCHAR_T_IS_UTF32)
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// This test is only valid when wchar_t == UTF-32.
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TEST(UTFStringConversionsTest, ConvertUTF32ToUTF8) {
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struct WideToUTF8Case {
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const wchar_t* utf32;
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const char* utf8;
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bool success;
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} convert_cases[] = {
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// Regular 16-bit input.
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{L"\x4f60\x597d", "\xe4\xbd\xa0\xe5\xa5\xbd", true},
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// Test a non-BMP character.
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{L"A\x10300z", "A\xF0\x90\x8C\x80z", true},
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// Non-characters are passed through.
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{L"\xffffHello", "\xEF\xBF\xBFHello", true},
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{L"\x10fffeHello", "\xF4\x8F\xBF\xBEHello", true},
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// Invalid Unicode code points.
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{L"\xfffffffHello", "\xEF\xBF\xBDHello", false},
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// The first character is a truncated UTF-16 character.
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{L"\xd800\x597d", "\xef\xbf\xbd\xe5\xa5\xbd", false},
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{L"\xdc01Hello", "\xef\xbf\xbdHello", false},
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};
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for (size_t i = 0; i < ARRAYSIZE_UNSAFE(convert_cases); i++) {
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std::string converted;
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EXPECT_EQ(convert_cases[i].success,
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WideToUTF8(convert_cases[i].utf32,
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wcslen(convert_cases[i].utf32),
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&converted));
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std::string expected(convert_cases[i].utf8);
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EXPECT_EQ(expected, converted);
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}
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}
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#endif // defined(WCHAR_T_IS_UTF32)
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TEST(UTFStringConversionsTest, ConvertMultiString) {
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static wchar_t wmulti[] = {
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L'f', L'o', L'o', L'\0',
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L'b', L'a', L'r', L'\0',
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L'b', L'a', L'z', L'\0',
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L'\0'
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};
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static char multi[] = {
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'f', 'o', 'o', '\0',
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'b', 'a', 'r', '\0',
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'b', 'a', 'z', '\0',
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'\0'
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};
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std::wstring wmultistring;
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memcpy(WriteInto(&wmultistring, arraysize(wmulti)), wmulti, sizeof(wmulti));
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EXPECT_EQ(arraysize(wmulti) - 1, wmultistring.length());
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std::string expected;
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memcpy(WriteInto(&expected, arraysize(multi)), multi, sizeof(multi));
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EXPECT_EQ(arraysize(multi) - 1, expected.length());
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const std::string& converted = WideToUTF8(wmultistring);
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EXPECT_EQ(arraysize(multi) - 1, converted.length());
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EXPECT_EQ(expected, converted);
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}
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} // base
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