src/base/utf_string_conversions_unittest.cc - cobalt - Git at Google

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/string_piece.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"

 namespace base {

 namespace {

 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
 };

 }  // namespace

 TEST(UTFStringConversionsTest, ConvertUTF8AndWide) {
   // we round-trip all the wide strings through UTF-8 to make sure everything
   // agrees on the conversion. This uses the stream operators to test them
   // simultaneously.
   for (size_t i = 0; i < arraysize(kConvertRoundtripCases); ++i) {
     std::ostringstream utf8;
     utf8 << WideToUTF8(kConvertRoundtripCases[i]);
     std::wostringstream wide;
     wide << UTF8ToWide(utf8.str());

     EXPECT_EQ(kConvertRoundtripCases[i], wide.str());
   }
 }

 TEST(UTFStringConversionsTest, ConvertUTF8AndWideEmptyString) {
   // An empty std::wstring should be converted to an empty std::string,
   // and vice versa.
   std::wstring wempty;
   std::string empty;
   EXPECT_EQ(empty, WideToUTF8(wempty));
   EXPECT_EQ(wempty, UTF8ToWide(empty));
 }

 TEST(UTFStringConversionsTest, ConvertUTF8ToWide) {
   struct UTF8ToWideCase {
     const char* utf8;
     const wchar_t* wide;
     bool success;
   } convert_cases[] = {
     // Regular UTF-8 input.
     {"\xe4\xbd\xa0\xe5\xa5\xbd", L"\x4f60\x597d", true},
     // Non-character is passed through.
     {"\xef\xbf\xbfHello", L"\xffffHello", true},
     // Truncated UTF-8 sequence.
     {"\xe4\xa0\xe5\xa5\xbd", L"\xfffd\x597d", false},
     // Truncated off the end.
     {"\xe5\xa5\xbd\xe4\xa0", L"\x597d\xfffd", false},
     // Non-shortest-form UTF-8.
     {"\xf0\x84\xbd\xa0\xe5\xa5\xbd", L"\xfffd\x597d", false},
     // This UTF-8 character decodes to a UTF-16 surrogate, which is illegal.
     {"\xed\xb0\x80", L"\xfffd", false},
     // Non-BMP characters. The second is a non-character regarded as valid.
     // The result will either be in UTF-16 or UTF-32.
 #if defined(WCHAR_T_IS_UTF16)
     {"A\xF0\x90\x8C\x80z", L"A\xd800\xdf00z", true},
     {"A\xF4\x8F\xBF\xBEz", L"A\xdbff\xdffez", true},
 #elif defined(WCHAR_T_IS_UTF32)
     {"A\xF0\x90\x8C\x80z", L"A\x10300z", true},
     {"A\xF4\x8F\xBF\xBEz", L"A\x10fffez", true},
 #endif
   };

   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(convert_cases); i++) {
     std::wstring converted;
     EXPECT_EQ(convert_cases[i].success,
               UTF8ToWide(convert_cases[i].utf8,
                          strlen(convert_cases[i].utf8),
                          &converted));
     std::wstring expected(convert_cases[i].wide);
     EXPECT_EQ(expected, converted);
   }

   // Manually test an embedded NULL.
   std::wstring converted;
   EXPECT_TRUE(UTF8ToWide("\00Z\t", 3, &converted));
   ASSERT_EQ(3U, converted.length());
   EXPECT_EQ(static_cast<wchar_t>(0), converted[0]);
   EXPECT_EQ('Z', converted[1]);
   EXPECT_EQ('\t', converted[2]);

   // Make sure that conversion replaces, not appends.
   EXPECT_TRUE(UTF8ToWide("B", 1, &converted));
   ASSERT_EQ(1U, converted.length());
   EXPECT_EQ('B', converted[0]);
 }

 #if defined(WCHAR_T_IS_UTF16)
 // This test is only valid when wchar_t == UTF-16.
 TEST(UTFStringConversionsTest, ConvertUTF16ToUTF8) {
   struct WideToUTF8Case {
     const wchar_t* utf16;
     const char* utf8;
     bool success;
   } convert_cases[] = {
     // Regular UTF-16 input.
     {L"\x4f60\x597d", "\xe4\xbd\xa0\xe5\xa5\xbd", true},
     // Test a non-BMP character.
     {L"\xd800\xdf00", "\xF0\x90\x8C\x80", true},
     // Non-characters are passed through.
     {L"\xffffHello", "\xEF\xBF\xBFHello", true},
     {L"\xdbff\xdffeHello", "\xF4\x8F\xBF\xBEHello", true},
     // The first character is a truncated UTF-16 character.
     {L"\xd800\x597d", "\xef\xbf\xbd\xe5\xa5\xbd", false},
     // Truncated at the end.
     {L"\x597d\xd800", "\xe5\xa5\xbd\xef\xbf\xbd", false},
   };

   for (int i = 0; i < arraysize(convert_cases); i++) {
     std::string converted;
     EXPECT_EQ(convert_cases[i].success,
               WideToUTF8(convert_cases[i].utf16,
                          wcslen(convert_cases[i].utf16),
                          &converted));
     std::string expected(convert_cases[i].utf8);
     EXPECT_EQ(expected, converted);
   }
 }

 #elif defined(WCHAR_T_IS_UTF32)
 // This test is only valid when wchar_t == UTF-32.
 TEST(UTFStringConversionsTest, ConvertUTF32ToUTF8) {
   struct WideToUTF8Case {
     const wchar_t* utf32;
     const char* utf8;
     bool success;
   } convert_cases[] = {
     // Regular 16-bit input.
     {L"\x4f60\x597d", "\xe4\xbd\xa0\xe5\xa5\xbd", true},
     // Test a non-BMP character.
     {L"A\x10300z", "A\xF0\x90\x8C\x80z", true},
     // Non-characters are passed through.
     {L"\xffffHello", "\xEF\xBF\xBFHello", true},
     {L"\x10fffeHello", "\xF4\x8F\xBF\xBEHello", true},
     // Invalid Unicode code points.
     {L"\xfffffffHello", "\xEF\xBF\xBDHello", false},
     // The first character is a truncated UTF-16 character.
     {L"\xd800\x597d", "\xef\xbf\xbd\xe5\xa5\xbd", false},
     {L"\xdc01Hello", "\xef\xbf\xbdHello", false},
   };

   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(convert_cases); i++) {
     std::string converted;
     EXPECT_EQ(convert_cases[i].success,
               WideToUTF8(convert_cases[i].utf32,
                          wcslen(convert_cases[i].utf32),
                          &converted));
     std::string expected(convert_cases[i].utf8);
     EXPECT_EQ(expected, converted);
   }
 }
 #endif  // defined(WCHAR_T_IS_UTF32)

 TEST(UTFStringConversionsTest, ConvertMultiString) {
   static wchar_t wmulti[] = {
     L'f', L'o', L'o', L'\0',
     L'b', L'a', L'r', L'\0',
     L'b', L'a', L'z', L'\0',
     L'\0'
   };
   static char multi[] = {
     'f', 'o', 'o', '\0',
     'b', 'a', 'r', '\0',
     'b', 'a', 'z', '\0',
     '\0'
   };
   std::wstring wmultistring;
   memcpy(WriteInto(&wmultistring, arraysize(wmulti)), wmulti, sizeof(wmulti));
   EXPECT_EQ(arraysize(wmulti) - 1, wmultistring.length());
   std::string expected;
   memcpy(WriteInto(&expected, arraysize(multi)), multi, sizeof(multi));
   EXPECT_EQ(arraysize(multi) - 1, expected.length());
   const std::string& converted = WideToUTF8(wmultistring);
   EXPECT_EQ(arraysize(multi) - 1, converted.length());
   EXPECT_EQ(expected, converted);
 }

 }  // base
	// Copyright (c) 2010 The Chromium Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	#include "base/basictypes.h"
	#include "base/logging.h"
	#include "base/string_piece.h"
	#include "base/string_util.h"
	#include "base/utf_string_conversions.h"
	#include "testing/gtest/include/gtest/gtest.h"

	namespace base {

	namespace {

	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
	};

	} // namespace

	TEST(UTFStringConversionsTest, ConvertUTF8AndWide) {
	// we round-trip all the wide strings through UTF-8 to make sure everything
	// agrees on the conversion. This uses the stream operators to test them
	// simultaneously.
	for (size_t i = 0; i < arraysize(kConvertRoundtripCases); ++i) {
	std::ostringstream utf8;
	utf8 << WideToUTF8(kConvertRoundtripCases[i]);
	std::wostringstream wide;
	wide << UTF8ToWide(utf8.str());

	EXPECT_EQ(kConvertRoundtripCases[i], wide.str());
	}
	}

	TEST(UTFStringConversionsTest, ConvertUTF8AndWideEmptyString) {
	// An empty std::wstring should be converted to an empty std::string,
	// and vice versa.
	std::wstring wempty;
	std::string empty;
	EXPECT_EQ(empty, WideToUTF8(wempty));
	EXPECT_EQ(wempty, UTF8ToWide(empty));
	}

	TEST(UTFStringConversionsTest, ConvertUTF8ToWide) {
	struct UTF8ToWideCase {
	const char* utf8;
	const wchar_t* wide;
	bool success;
	} convert_cases[] = {
	// Regular UTF-8 input.
	{"\xe4\xbd\xa0\xe5\xa5\xbd", L"\x4f60\x597d", true},
	// Non-character is passed through.
	{"\xef\xbf\xbfHello", L"\xffffHello", true},
	// Truncated UTF-8 sequence.
	{"\xe4\xa0\xe5\xa5\xbd", L"\xfffd\x597d", false},
	// Truncated off the end.
	{"\xe5\xa5\xbd\xe4\xa0", L"\x597d\xfffd", false},
	// Non-shortest-form UTF-8.
	{"\xf0\x84\xbd\xa0\xe5\xa5\xbd", L"\xfffd\x597d", false},
	// This UTF-8 character decodes to a UTF-16 surrogate, which is illegal.
	{"\xed\xb0\x80", L"\xfffd", false},
	// Non-BMP characters. The second is a non-character regarded as valid.
	// The result will either be in UTF-16 or UTF-32.
	#if defined(WCHAR_T_IS_UTF16)
	{"A\xF0\x90\x8C\x80z", L"A\xd800\xdf00z", true},
	{"A\xF4\x8F\xBF\xBEz", L"A\xdbff\xdffez", true},
	#elif defined(WCHAR_T_IS_UTF32)
	{"A\xF0\x90\x8C\x80z", L"A\x10300z", true},
	{"A\xF4\x8F\xBF\xBEz", L"A\x10fffez", true},
	#endif
	};

	for (size_t i = 0; i < ARRAYSIZE_UNSAFE(convert_cases); i++) {
	std::wstring converted;
	EXPECT_EQ(convert_cases[i].success,
	UTF8ToWide(convert_cases[i].utf8,
	strlen(convert_cases[i].utf8),
	&converted));
	std::wstring expected(convert_cases[i].wide);
	EXPECT_EQ(expected, converted);
	}

	// Manually test an embedded NULL.
	std::wstring converted;
	EXPECT_TRUE(UTF8ToWide("\00Z\t", 3, &converted));
	ASSERT_EQ(3U, converted.length());
	EXPECT_EQ(static_cast<wchar_t>(0), converted[0]);
	EXPECT_EQ('Z', converted[1]);
	EXPECT_EQ('\t', converted[2]);

	// Make sure that conversion replaces, not appends.
	EXPECT_TRUE(UTF8ToWide("B", 1, &converted));
	ASSERT_EQ(1U, converted.length());
	EXPECT_EQ('B', converted[0]);
	}

	#if defined(WCHAR_T_IS_UTF16)
	// This test is only valid when wchar_t == UTF-16.
	TEST(UTFStringConversionsTest, ConvertUTF16ToUTF8) {
	struct WideToUTF8Case {
	const wchar_t* utf16;
	const char* utf8;
	bool success;
	} convert_cases[] = {
	// Regular UTF-16 input.
	{L"\x4f60\x597d", "\xe4\xbd\xa0\xe5\xa5\xbd", true},
	// Test a non-BMP character.
	{L"\xd800\xdf00", "\xF0\x90\x8C\x80", true},
	// Non-characters are passed through.
	{L"\xffffHello", "\xEF\xBF\xBFHello", true},
	{L"\xdbff\xdffeHello", "\xF4\x8F\xBF\xBEHello", true},
	// The first character is a truncated UTF-16 character.
	{L"\xd800\x597d", "\xef\xbf\xbd\xe5\xa5\xbd", false},
	// Truncated at the end.
	{L"\x597d\xd800", "\xe5\xa5\xbd\xef\xbf\xbd", false},
	};

	for (int i = 0; i < arraysize(convert_cases); i++) {
	std::string converted;
	EXPECT_EQ(convert_cases[i].success,
	WideToUTF8(convert_cases[i].utf16,
	wcslen(convert_cases[i].utf16),
	&converted));
	std::string expected(convert_cases[i].utf8);
	EXPECT_EQ(expected, converted);
	}
	}

	#elif defined(WCHAR_T_IS_UTF32)
	// This test is only valid when wchar_t == UTF-32.
	TEST(UTFStringConversionsTest, ConvertUTF32ToUTF8) {
	struct WideToUTF8Case {
	const wchar_t* utf32;
	const char* utf8;
	bool success;
	} convert_cases[] = {
	// Regular 16-bit input.
	{L"\x4f60\x597d", "\xe4\xbd\xa0\xe5\xa5\xbd", true},
	// Test a non-BMP character.
	{L"A\x10300z", "A\xF0\x90\x8C\x80z", true},
	// Non-characters are passed through.
	{L"\xffffHello", "\xEF\xBF\xBFHello", true},
	{L"\x10fffeHello", "\xF4\x8F\xBF\xBEHello", true},
	// Invalid Unicode code points.
	{L"\xfffffffHello", "\xEF\xBF\xBDHello", false},
	// The first character is a truncated UTF-16 character.
	{L"\xd800\x597d", "\xef\xbf\xbd\xe5\xa5\xbd", false},
	{L"\xdc01Hello", "\xef\xbf\xbdHello", false},
	};

	for (size_t i = 0; i < ARRAYSIZE_UNSAFE(convert_cases); i++) {
	std::string converted;
	EXPECT_EQ(convert_cases[i].success,
	WideToUTF8(convert_cases[i].utf32,
	wcslen(convert_cases[i].utf32),
	&converted));
	std::string expected(convert_cases[i].utf8);
	EXPECT_EQ(expected, converted);
	}
	}
	#endif // defined(WCHAR_T_IS_UTF32)

	TEST(UTFStringConversionsTest, ConvertMultiString) {
	static wchar_t wmulti[] = {
	L'f', L'o', L'o', L'\0',
	L'b', L'a', L'r', L'\0',
	L'b', L'a', L'z', L'\0',
	L'\0'
	};
	static char multi[] = {
	'f', 'o', 'o', '\0',
	'b', 'a', 'r', '\0',
	'b', 'a', 'z', '\0',
	'\0'
	};
	std::wstring wmultistring;
	memcpy(WriteInto(&wmultistring, arraysize(wmulti)), wmulti, sizeof(wmulti));
	EXPECT_EQ(arraysize(wmulti) - 1, wmultistring.length());
	std::string expected;
	memcpy(WriteInto(&expected, arraysize(multi)), multi, sizeof(multi));
	EXPECT_EQ(arraysize(multi) - 1, expected.length());
	const std::string& converted = WideToUTF8(wmultistring);
	EXPECT_EQ(arraysize(multi) - 1, converted.length());
	EXPECT_EQ(expected, converted);
	}

	} // base