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// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stddef.h>
#include <string>
#include "base/strings/string_piece.h"
#include "base/strings/sys_string_conversions.h"
#include "base/strings/utf_string_conversions.h"
#include "base/test/scoped_locale.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
#ifdef WCHAR_T_IS_UTF32
static const std::wstring kSysWideOldItalicLetterA = L"\x10300";
#else
static const std::wstring kSysWideOldItalicLetterA = L"\xd800\xdf00";
#endif
namespace base {
TEST(SysStrings, SysWideToUTF8) {
EXPECT_EQ("Hello, world", SysWideToUTF8(L"Hello, world"));
EXPECT_EQ("\xe4\xbd\xa0\xe5\xa5\xbd", SysWideToUTF8(L"\x4f60\x597d"));
// A value outside of the BMP and therefore not representable with one UTF-16
// code unit.
EXPECT_EQ("\xF0\x90\x8C\x80", SysWideToUTF8(kSysWideOldItalicLetterA));
// Error case. When Windows finds a UTF-16 character going off the end of
// a string, it just converts that literal value to UTF-8, even though this
// is invalid.
//
// This is what XP does, but Vista has different behavior, so we don't bother
// verifying it:
// EXPECT_EQ("\xE4\xBD\xA0\xED\xA0\x80zyxw",
// SysWideToUTF8(L"\x4f60\xd800zyxw"));
// Test embedded NULLs.
std::wstring wide_null(L"a");
wide_null.push_back(0);
wide_null.push_back('b');
std::string expected_null("a");
expected_null.push_back(0);
expected_null.push_back('b');
EXPECT_EQ(expected_null, SysWideToUTF8(wide_null));
}
TEST(SysStrings, SysUTF8ToWide) {
EXPECT_EQ(L"Hello, world", SysUTF8ToWide("Hello, world"));
EXPECT_EQ(L"\x4f60\x597d", SysUTF8ToWide("\xe4\xbd\xa0\xe5\xa5\xbd"));
// A value outside of the BMP and therefore not representable with one UTF-16
// code unit.
EXPECT_EQ(kSysWideOldItalicLetterA, SysUTF8ToWide("\xF0\x90\x8C\x80"));
// Error case. When Windows finds an invalid UTF-8 character, it just skips
// it. This seems weird because it's inconsistent with the reverse conversion.
//
// This is what XP does, but Vista has different behavior, so we don't bother
// verifying it:
// EXPECT_EQ(L"\x4f60zyxw", SysUTF8ToWide("\xe4\xbd\xa0\xe5\xa5zyxw"));
// Test embedded NULLs.
std::string utf8_null("a");
utf8_null.push_back(0);
utf8_null.push_back('b');
std::wstring expected_null(L"a");
expected_null.push_back(0);
expected_null.push_back('b');
EXPECT_EQ(expected_null, SysUTF8ToWide(utf8_null));
}
// Tests depend on setting a specific Linux locale.
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
TEST(SysStrings, SysWideToNativeMB) {
#if !defined(SYSTEM_NATIVE_UTF8)
ScopedLocale locale("en_US.UTF-8");
#endif
EXPECT_EQ("Hello, world", SysWideToNativeMB(L"Hello, world"));
EXPECT_EQ("\xe4\xbd\xa0\xe5\xa5\xbd", SysWideToNativeMB(L"\x4f60\x597d"));
// A value outside of the BMP and therefore not representable with one UTF-16
// code unit.
EXPECT_EQ("\xF0\x90\x8C\x80", SysWideToNativeMB(kSysWideOldItalicLetterA));
// Error case. When Windows finds a UTF-16 character going off the end of
// a string, it just converts that literal value to UTF-8, even though this
// is invalid.
//
// This is what XP does, but Vista has different behavior, so we don't bother
// verifying it:
// EXPECT_EQ("\xE4\xBD\xA0\xED\xA0\x80zyxw",
// SysWideToNativeMB(L"\x4f60\xd800zyxw"));
// Test embedded NULLs.
std::wstring wide_null(L"a");
wide_null.push_back(0);
wide_null.push_back('b');
std::string expected_null("a");
expected_null.push_back(0);
expected_null.push_back('b');
EXPECT_EQ(expected_null, SysWideToNativeMB(wide_null));
}
// We assume the test is running in a UTF8 locale.
TEST(SysStrings, SysNativeMBToWide) {
#if !defined(SYSTEM_NATIVE_UTF8)
ScopedLocale locale("en_US.UTF-8");
#endif
EXPECT_EQ(L"Hello, world", SysNativeMBToWide("Hello, world"));
EXPECT_EQ(L"\x4f60\x597d", SysNativeMBToWide("\xe4\xbd\xa0\xe5\xa5\xbd"));
// A value outside of the BMP and therefore not representable with one UTF-16
// code unit.
EXPECT_EQ(kSysWideOldItalicLetterA, SysNativeMBToWide("\xF0\x90\x8C\x80"));
// Error case. When Windows finds an invalid UTF-8 character, it just skips
// it. This seems weird because it's inconsistent with the reverse conversion.
//
// This is what XP does, but Vista has different behavior, so we don't bother
// verifying it:
// EXPECT_EQ(L"\x4f60zyxw", SysNativeMBToWide("\xe4\xbd\xa0\xe5\xa5zyxw"));
// Test embedded NULLs.
std::string utf8_null("a");
utf8_null.push_back(0);
utf8_null.push_back('b');
std::wstring expected_null(L"a");
expected_null.push_back(0);
expected_null.push_back('b');
EXPECT_EQ(expected_null, SysNativeMBToWide(utf8_null));
}
static const wchar_t* const kConvertRoundtripCases[] = {
L"Google Video",
// "网页 图片 资讯更多 »"
L"\x7f51\x9875\x0020\x56fe\x7247\x0020\x8d44\x8baf\x66f4\x591a\x0020\x00bb",
// "Παγκόσμιος Ιστός"
L"\x03a0\x03b1\x03b3\x03ba\x03cc\x03c3\x03bc\x03b9"
L"\x03bf\x03c2\x0020\x0399\x03c3\x03c4\x03cc\x03c2",
// "Поиск страниц на русском"
L"\x041f\x043e\x0438\x0441\x043a\x0020\x0441\x0442"
L"\x0440\x0430\x043d\x0438\x0446\x0020\x043d\x0430"
L"\x0020\x0440\x0443\x0441\x0441\x043a\x043e\x043c",
// "전체서비스"
L"\xc804\xccb4\xc11c\xbe44\xc2a4",
// Test characters that take more than 16 bits. This will depend on whether
// wchar_t is 16 or 32 bits.
#if defined(WCHAR_T_IS_UTF16)
L"\xd800\xdf00",
// ????? (Mathematical Alphanumeric Symbols (U+011d40 - U+011d44 : A,B,C,D,E)
L"\xd807\xdd40\xd807\xdd41\xd807\xdd42\xd807\xdd43\xd807\xdd44",
#elif defined(WCHAR_T_IS_UTF32)
L"\x10300",
// ????? (Mathematical Alphanumeric Symbols (U+011d40 - U+011d44 : A,B,C,D,E)
L"\x11d40\x11d41\x11d42\x11d43\x11d44",
#endif
};
TEST(SysStrings, SysNativeMBAndWide) {
#if !defined(SYSTEM_NATIVE_UTF8)
ScopedLocale locale("en_US.UTF-8");
#endif
for (auto* i : kConvertRoundtripCases) {
std::wstring wide = i;
std::wstring trip = SysNativeMBToWide(SysWideToNativeMB(wide));
EXPECT_EQ(wide.size(), trip.size());
EXPECT_EQ(wide, trip);
}
// We assume our test is running in UTF-8, so double check through ICU.
for (auto* i : kConvertRoundtripCases) {
std::wstring wide = i;
std::wstring trip = SysNativeMBToWide(WideToUTF8(wide));
EXPECT_EQ(wide.size(), trip.size());
EXPECT_EQ(wide, trip);
}
for (auto* i : kConvertRoundtripCases) {
std::wstring wide = i;
std::wstring trip = UTF8ToWide(SysWideToNativeMB(wide));
EXPECT_EQ(wide.size(), trip.size());
EXPECT_EQ(wide, trip);
}
}
#endif // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
} // namespace base
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