Fix various problems with inline autocomplete and URLs that change length dur...

base/utf_string_conversions_unittest.cc

Index: base/utf_string_conversions_unittest.cc
===================================================================
--- base/utf_string_conversions_unittest.cc	(revision 30908)
+++ base/utf_string_conversions_unittest.cc	(working copy)
@@ -1,13 +1,7 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2009 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 <math.h>
-#include <stdarg.h>
-
-#include <limits>
-#include <sstream>
-
 #include "base/basictypes.h"
 #include "base/string_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -37,199 +31,7 @@
 #endif
 }
 
-}  // namespace
-
-static const struct trim_case {
-  const wchar_t* input;
-  const TrimPositions positions;
-  const wchar_t* output;
-  const TrimPositions return_value;
-} trim_cases[] = {
-  {L" Google Video ", TRIM_LEADING, L"Google Video ", TRIM_LEADING},
-  {L" Google Video ", TRIM_TRAILING, L" Google Video", TRIM_TRAILING},
-  {L" Google Video ", TRIM_ALL, L"Google Video", TRIM_ALL},
-  {L"Google Video", TRIM_ALL, L"Google Video", TRIM_NONE},
-  {L"", TRIM_ALL, L"", TRIM_NONE},
-  {L"  ", TRIM_LEADING, L"", TRIM_LEADING},
-  {L"  ", TRIM_TRAILING, L"", TRIM_TRAILING},
-  {L"  ", TRIM_ALL, L"", TRIM_ALL},
-  {L"\t\rTest String\n", TRIM_ALL, L"Test String", TRIM_ALL},
-  {L"\x2002Test String\x00A0\x3000", TRIM_ALL, L"Test String", TRIM_ALL},
-};
-
-static const struct trim_case_ascii {
-  const char* input;
-  const TrimPositions positions;
-  const char* output;
-  const TrimPositions return_value;
-} trim_cases_ascii[] = {
-  {" Google Video ", TRIM_LEADING, "Google Video ", TRIM_LEADING},
-  {" Google Video ", TRIM_TRAILING, " Google Video", TRIM_TRAILING},
-  {" Google Video ", TRIM_ALL, "Google Video", TRIM_ALL},
-  {"Google Video", TRIM_ALL, "Google Video", TRIM_NONE},
-  {"", TRIM_ALL, "", TRIM_NONE},
-  {"  ", TRIM_LEADING, "", TRIM_LEADING},
-  {"  ", TRIM_TRAILING, "", TRIM_TRAILING},
-  {"  ", TRIM_ALL, "", TRIM_ALL},
-  {"\t\rTest String\n", TRIM_ALL, "Test String", TRIM_ALL},
-};
-
-TEST(StringUtilTest, TrimWhitespace) {
-  std::wstring output;  // Allow contents to carry over to next testcase
-  for (size_t i = 0; i < arraysize(trim_cases); ++i) {
-    const trim_case& value = trim_cases[i];
-    EXPECT_EQ(value.return_value,
-              TrimWhitespace(value.input, value.positions, &output));
-    EXPECT_EQ(value.output, output);
-  }
-
-  // Test that TrimWhitespace() can take the same string for input and output
-  output = L"  This is a test \r\n";
-  EXPECT_EQ(TRIM_ALL, TrimWhitespace(output, TRIM_ALL, &output));
-  EXPECT_EQ(L"This is a test", output);
-
-  // Once more, but with a string of whitespace
-  output = L"  \r\n";
-  EXPECT_EQ(TRIM_ALL, TrimWhitespace(output, TRIM_ALL, &output));
-  EXPECT_EQ(L"", output);
-
-  std::string output_ascii;
-  for (size_t i = 0; i < arraysize(trim_cases_ascii); ++i) {
-    const trim_case_ascii& value = trim_cases_ascii[i];
-    EXPECT_EQ(value.return_value,
-              TrimWhitespace(value.input, value.positions, &output_ascii));
-    EXPECT_EQ(value.output, output_ascii);
-  }
-}
-
-static const struct collapse_case {
-  const wchar_t* input;
-  const bool trim;
-  const wchar_t* output;
-} collapse_cases[] = {
-  {L" Google Video ", false, L"Google Video"},
-  {L"Google Video", false, L"Google Video"},
-  {L"", false, L""},
-  {L"  ", false, L""},
-  {L"\t\rTest String\n", false, L"Test String"},
-  {L"\x2002Test String\x00A0\x3000", false, L"Test String"},
-  {L"    Test     \n  \t String    ", false, L"Test String"},
-  {L"\x2002Test\x1680 \x2028 \tString\x00A0\x3000", false, L"Test String"},
-  {L"   Test String", false, L"Test String"},
-  {L"Test String    ", false, L"Test String"},
-  {L"Test String", false, L"Test String"},
-  {L"", true, L""},
-  {L"\n", true, L""},
-  {L"  \r  ", true, L""},
-  {L"\nFoo", true, L"Foo"},
-  {L"\r  Foo  ", true, L"Foo"},
-  {L" Foo bar ", true, L"Foo bar"},
-  {L"  \tFoo  bar  \n", true, L"Foo bar"},
-  {L" a \r b\n c \r\n d \t\re \t f \n ", true, L"abcde f"},
-};
-
-TEST(StringUtilTest, CollapseWhitespace) {
-  for (size_t i = 0; i < arraysize(collapse_cases); ++i) {
-    const collapse_case& value = collapse_cases[i];
-    EXPECT_EQ(value.output, CollapseWhitespace(value.input, value.trim));
-  }
-}
-
-static const struct collapse_case_ascii {
-  const char* input;
-  const bool trim;
-  const char* output;
-} collapse_cases_ascii[] = {
-  {" Google Video ", false, "Google Video"},
-  {"Google Video", false, "Google Video"},
-  {"", false, ""},
-  {"  ", false, ""},
-  {"\t\rTest String\n", false, "Test String"},
-  {"    Test     \n  \t String    ", false, "Test String"},
-  {"   Test String", false, "Test String"},
-  {"Test String    ", false, "Test String"},
-  {"Test String", false, "Test String"},
-  {"", true, ""},
-  {"\n", true, ""},
-  {"  \r  ", true, ""},
-  {"\nFoo", true, "Foo"},
-  {"\r  Foo  ", true, "Foo"},
-  {" Foo bar ", true, "Foo bar"},
-  {"  \tFoo  bar  \n", true, "Foo bar"},
-  {" a \r b\n c \r\n d \t\re \t f \n ", true, "abcde f"},
-};
-
-TEST(StringUtilTest, CollapseWhitespaceASCII) {
-  for (size_t i = 0; i < arraysize(collapse_cases_ascii); ++i) {
-    const collapse_case_ascii& value = collapse_cases_ascii[i];
-    EXPECT_EQ(value.output, CollapseWhitespaceASCII(value.input, value.trim));
-  }
-}
-
-TEST(StringUtilTest, IsStringUTF8) {
-  EXPECT_TRUE(IsStringUTF8("abc"));
-  EXPECT_TRUE(IsStringUTF8("\xc2\x81"));
-  EXPECT_TRUE(IsStringUTF8("\xe1\x80\xbf"));
-  EXPECT_TRUE(IsStringUTF8("\xf1\x80\xa0\xbf"));
-  EXPECT_TRUE(IsStringUTF8("a\xc2\x81\xe1\x80\xbf\xf1\x80\xa0\xbf"));
-  EXPECT_TRUE(IsStringUTF8("\xef\xbb\xbf" "abc")); // UTF-8 BOM
-
-  // surrogate code points
-  EXPECT_FALSE(IsStringUTF8("\xed\xa0\x80\xed\xbf\xbf"));
-  EXPECT_FALSE(IsStringUTF8("\xed\xa0\x8f"));
-  EXPECT_FALSE(IsStringUTF8("\xed\xbf\xbf"));
-
-  // overlong sequences
-  EXPECT_FALSE(IsStringUTF8("\xc0\x80")); // U+0000
-  EXPECT_FALSE(IsStringUTF8("\xc1\x80\xc1\x81")); // "AB"
-  EXPECT_FALSE(IsStringUTF8("\xe0\x80\x80")); // U+0000
-  EXPECT_FALSE(IsStringUTF8("\xe0\x82\x80")); // U+0080
-  EXPECT_FALSE(IsStringUTF8("\xe0\x9f\xbf")); // U+07ff
-  EXPECT_FALSE(IsStringUTF8("\xf0\x80\x80\x8D")); // U+000D
-  EXPECT_FALSE(IsStringUTF8("\xf0\x80\x82\x91")); // U+0091
-  EXPECT_FALSE(IsStringUTF8("\xf0\x80\xa0\x80")); // U+0800
-  EXPECT_FALSE(IsStringUTF8("\xf0\x8f\xbb\xbf")); // U+FEFF (BOM)
-  EXPECT_FALSE(IsStringUTF8("\xf8\x80\x80\x80\xbf")); // U+003F
-  EXPECT_FALSE(IsStringUTF8("\xfc\x80\x80\x80\xa0\xa5")); // U+00A5
-
-  // Beyond U+10FFFF (the upper limit of Unicode codespace)
-  EXPECT_FALSE(IsStringUTF8("\xf4\x90\x80\x80")); // U+110000
-  EXPECT_FALSE(IsStringUTF8("\xf8\xa0\xbf\x80\xbf")); // 5 bytes
-  EXPECT_FALSE(IsStringUTF8("\xfc\x9c\xbf\x80\xbf\x80")); // 6 bytes
-
-  // BOMs in UTF-16(BE|LE) and UTF-32(BE|LE)
-  EXPECT_FALSE(IsStringUTF8("\xfe\xff"));
-  EXPECT_FALSE(IsStringUTF8("\xff\xfe"));
-  EXPECT_FALSE(IsStringUTF8(std::string("\x00\x00\xfe\xff", 4)));
-  EXPECT_FALSE(IsStringUTF8("\xff\xfe\x00\x00"));
-
-  // Non-characters : U+xxFFF[EF] where xx is 0x00 through 0x10 and <FDD0,FDEF>
-  EXPECT_FALSE(IsStringUTF8("\xef\xbf\xbe")); // U+FFFE)
-  EXPECT_FALSE(IsStringUTF8("\xf0\x8f\xbf\xbe")); // U+1FFFE
-  EXPECT_FALSE(IsStringUTF8("\xf3\xbf\xbf\xbf")); // U+10FFFF
-
-  // This should also be false, but currently we pass them through.
-  // Disable them for now.
-#if 0
-  EXPECT_FALSE(IsStringUTF8("\xef\xb7\x90")); // U+FDD0
-  EXPECT_FALSE(IsStringUTF8("\xef\xb7\xaf")); // U+FDEF
-#endif
-
-  // Strings in legacy encodings. We can certainly make up strings
-  // in a legacy encoding that are valid in UTF-8, but in real data,
-  // most of them are invalid as UTF-8.
-  EXPECT_FALSE(IsStringUTF8("caf\xe9")); // cafe with U+00E9 in ISO-8859-1
-  EXPECT_FALSE(IsStringUTF8("\xb0\xa1\xb0\xa2")); // U+AC00, U+AC001 in EUC-KR
-  EXPECT_FALSE(IsStringUTF8("\xa7\x41\xa6\x6e")); // U+4F60 U+597D in Big5
-  // "abc" with U+201[CD] in windows-125[0-8]
-  EXPECT_FALSE(IsStringUTF8("\x93" "abc\x94"));
-  // U+0639 U+064E U+0644 U+064E in ISO-8859-6
-  EXPECT_FALSE(IsStringUTF8("\xd9\xee\xe4\xee"));
-  // U+03B3 U+03B5 U+03B9 U+03AC in ISO-8859-7
-  EXPECT_FALSE(IsStringUTF8("\xe3\xe5\xe9\xdC"));
-}
-
-static const wchar_t* const kConvertRoundtripCases[] = {
+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",
@@ -256,7 +58,9 @@
 #endif
 };
 
-TEST(StringUtilTest, ConvertUTF8AndWide) {
+}  // 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.
@@ -270,7 +74,7 @@
   }
 }
 
-TEST(StringUtilTest, ConvertUTF8AndWideEmptyString) {
+TEST(UTFStringConversionsTest, ConvertUTF8AndWideEmptyString) {
   // An empty std::wstring should be converted to an empty std::string,
   // and vice versa.
   std::wstring wempty;
@@ -279,7 +83,7 @@
   EXPECT_EQ(wempty, UTF8ToWide(empty));
 }
 
-TEST(StringUtilTest, ConvertUTF8ToWide) {
+TEST(UTFStringConversionsTest, ConvertUTF8ToWide) {
   struct UTF8ToWideCase {
     const char* utf8;
     const wchar_t* wide;
@@ -322,11 +126,7 @@
   std::wstring converted;
   EXPECT_TRUE(UTF8ToWide("\00Z\t", 3, &converted));
   ASSERT_EQ(3U, converted.length());
-#if defined(WCHAR_T_IS_UNSIGNED)
-  EXPECT_EQ(0U, converted[0]);
-#else
-  EXPECT_EQ(0, converted[0]);
-#endif
+  EXPECT_EQ(static_cast<wchar_t>(0), converted[0]);
   EXPECT_EQ('Z', converted[1]);
   EXPECT_EQ('\t', converted[2]);
 
@@ -338,8 +138,8 @@
 
 #if defined(WCHAR_T_IS_UTF16)
 // This test is only valid when wchar_t == UTF-16.
-TEST(StringUtilTest, ConvertUTF16ToUTF8) {
-  struct UTF16ToUTF8Case {
+TEST(UTFStringConversionsTest, ConvertUTF16ToUTF8) {
+  struct WideToUTF8Case {
     const wchar_t* utf16;
     const char* utf8;
     bool success;
@@ -370,7 +170,7 @@
 
 #elif defined(WCHAR_T_IS_UTF32)
 // This test is only valid when wchar_t == UTF-32.
-TEST(StringUtilTest, ConvertUTF32ToUTF8) {
+TEST(UTFStringConversionsTest, ConvertUTF32ToUTF8) {
   struct WideToUTF8Case {
     const wchar_t* utf32;
     const char* utf8;
@@ -402,7 +202,7 @@
 }
 #endif  // defined(WCHAR_T_IS_UTF32)
 
-TEST(StringUtilTest, ConvertMultiString) {
+TEST(UTFStringConversionsTest, ConvertMultiString) {
   static wchar_t wmulti[] = {
     L'f', L'o', L'o', L'\0',
     L'b', L'a', L'r', L'\0',
@@ -426,1123 +226,81 @@
   EXPECT_EQ(expected, converted);
 }
 
-TEST(StringUtilTest, ConvertASCII) {
-  static const char* char_cases[] = {
-    "Google Video",
-    "Hello, world\n",
-    "0123ABCDwxyz \a\b\t\r\n!+,.~"
+TEST(UTFStringConversionsTest, AdjustOffset) {
+  // Under the hood, all the functions call the same converter function, so we
+  // don't need to exhaustively check every case.
+  struct WideToUTF8Case {
+    const wchar_t* wide;
+    size_t input_offset;
+    size_t output_offset;
+  } wide_to_utf8_cases[] = {
+    {L"", 0, std::string::npos},
+    {L"\x4f60\x597d", 0, 0},
+    {L"\x4f60\x597d", 1, 3},
+    {L"\x4f60\x597d", 2, std::string::npos},
+    {L"\x4f60\x597d", std::wstring::npos, std::string::npos},
+    {L"\xd800\x597dz", 1, 0},
+    {L"\xd800\x597dz", 2, 3},
   };
-
-  static const wchar_t* const wchar_cases[] = {
-    L"Google Video",
-    L"Hello, world\n",
-    L"0123ABCDwxyz \a\b\t\r\n!+,.~"
-  };
-
-  for (size_t i = 0; i < arraysize(char_cases); ++i) {
-    EXPECT_TRUE(IsStringASCII(char_cases[i]));
-    std::wstring wide = ASCIIToWide(char_cases[i]);
-    EXPECT_EQ(wchar_cases[i], wide);
-
-    EXPECT_TRUE(IsStringASCII(wchar_cases[i]));
-    std::string ascii = WideToASCII(wchar_cases[i]);
-    EXPECT_EQ(char_cases[i], ascii);
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(wide_to_utf8_cases); ++i) {
+    size_t offset = wide_to_utf8_cases[i].input_offset;
+    WideToUTF8AndAdjustOffset(wide_to_utf8_cases[i].wide, &offset);
+    EXPECT_EQ(wide_to_utf8_cases[i].output_offset, offset);
   }
 
-  EXPECT_FALSE(IsStringASCII("Google \x80Video"));
-  EXPECT_FALSE(IsStringASCII(L"Google \x80Video"));
-
-  // Convert empty strings.
-  std::wstring wempty;
-  std::string empty;
-  EXPECT_EQ(empty, WideToASCII(wempty));
-  EXPECT_EQ(wempty, ASCIIToWide(empty));
-
-  // Convert strings with an embedded NUL character.
-  const char chars_with_nul[] = "test\0string";
-  const int length_with_nul = arraysize(chars_with_nul) - 1;
-  std::string string_with_nul(chars_with_nul, length_with_nul);
-  std::wstring wide_with_nul = ASCIIToWide(string_with_nul);
-  EXPECT_EQ(static_cast<std::wstring::size_type>(length_with_nul),
-            wide_with_nul.length());
-  std::string narrow_with_nul = WideToASCII(wide_with_nul);
-  EXPECT_EQ(static_cast<std::string::size_type>(length_with_nul),
-            narrow_with_nul.length());
-  EXPECT_EQ(0, string_with_nul.compare(narrow_with_nul));
-}
-
-TEST(StringUtilTest, ToUpperASCII) {
-  EXPECT_EQ('C', ToUpperASCII('C'));
-  EXPECT_EQ('C', ToUpperASCII('c'));
-  EXPECT_EQ('2', ToUpperASCII('2'));
-
-  EXPECT_EQ(L'C', ToUpperASCII(L'C'));
-  EXPECT_EQ(L'C', ToUpperASCII(L'c'));
-  EXPECT_EQ(L'2', ToUpperASCII(L'2'));
-
-  std::string in_place_a("Cc2");
-  StringToUpperASCII(&in_place_a);
-  EXPECT_EQ("CC2", in_place_a);
-
-  std::wstring in_place_w(L"Cc2");
-  StringToUpperASCII(&in_place_w);
-  EXPECT_EQ(L"CC2", in_place_w);
-
-  std::string original_a("Cc2");
-  std::string upper_a = StringToUpperASCII(original_a);
-  EXPECT_EQ("CC2", upper_a);
-
-  std::wstring original_w(L"Cc2");
-  std::wstring upper_w = StringToUpperASCII(original_w);
-  EXPECT_EQ(L"CC2", upper_w);
-}
-
-static const struct {
-  const wchar_t* src_w;
-  const char*    src_a;
-  const char*    dst;
-} lowercase_cases[] = {
-  {L"FoO", "FoO", "foo"},
-  {L"foo", "foo", "foo"},
-  {L"FOO", "FOO", "foo"},
-};
-
-TEST(StringUtilTest, LowerCaseEqualsASCII) {
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(lowercase_cases); ++i) {
-    EXPECT_TRUE(LowerCaseEqualsASCII(lowercase_cases[i].src_w,
-                                     lowercase_cases[i].dst));
-    EXPECT_TRUE(LowerCaseEqualsASCII(lowercase_cases[i].src_a,
-                                     lowercase_cases[i].dst));
-  }
-}
-
-TEST(StringUtilTest, GetByteDisplayUnits) {
-  static const struct {
-    int64 bytes;
-    DataUnits expected;
-  } cases[] = {
-    {0, DATA_UNITS_BYTE},
-    {512, DATA_UNITS_BYTE},
-    {10*1024, DATA_UNITS_KILOBYTE},
-    {10*1024*1024, DATA_UNITS_MEGABYTE},
-    {10LL*1024*1024*1024, DATA_UNITS_GIGABYTE},
-    {~(1LL<<63), DATA_UNITS_GIGABYTE},
-#ifdef NDEBUG
-    {-1, DATA_UNITS_BYTE},
+  struct UTF8ToWideCase {
+    const char* utf8;
+    size_t input_offset;
+    size_t output_offset;
+  } utf8_to_wide_cases[] = {
+    {"\xe4\xbd\xa0\xe5\xa5\xbd", 1, std::wstring::npos},
+    {"\xe4\xbd\xa0\xe5\xa5\xbd", 3, 1},
+    {"\xed\xb0\x80z", 3, 0},
+    {"A\xF0\x90\x8C\x80z", 1, 1},
+    {"A\xF0\x90\x8C\x80z", 2, std::wstring::npos},
+#if defined(WCHAR_T_IS_UTF16)
+    {"A\xF0\x90\x8C\x80z", 5, 3},
+#elif defined(WCHAR_T_IS_UTF32)
+    {"A\xF0\x90\x8C\x80z", 5, 2},
 #endif
   };
-
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i)
-    EXPECT_EQ(cases[i].expected, GetByteDisplayUnits(cases[i].bytes));
-}
-
-TEST(StringUtilTest, FormatBytes) {
-  static const struct {
-    int64 bytes;
-    DataUnits units;
-    const wchar_t* expected;
-    const wchar_t* expected_with_units;
-  } cases[] = {
-    {0, DATA_UNITS_BYTE, L"0", L"0 B"},
-    {512, DATA_UNITS_BYTE, L"512", L"512 B"},
-    {512, DATA_UNITS_KILOBYTE, L"0.5", L"0.5 kB"},
-    {1024*1024, DATA_UNITS_KILOBYTE, L"1024", L"1024 kB"},
-    {1024*1024, DATA_UNITS_MEGABYTE, L"1", L"1 MB"},
-    {1024*1024*1024, DATA_UNITS_GIGABYTE, L"1", L"1 GB"},
-    {10LL*1024*1024*1024, DATA_UNITS_GIGABYTE, L"10", L"10 GB"},
-    {~(1LL<<63), DATA_UNITS_GIGABYTE, L"8589934592", L"8589934592 GB"},
-    // Make sure the first digit of the fractional part works.
-    {1024*1024 + 103, DATA_UNITS_KILOBYTE, L"1024.1", L"1024.1 kB"},
-    {1024*1024 + 205 * 1024, DATA_UNITS_MEGABYTE, L"1.2", L"1.2 MB"},
-    {1024*1024*1024 + (927 * 1024*1024), DATA_UNITS_GIGABYTE,
-     L"1.9", L"1.9 GB"},
-    {10LL*1024*1024*1024, DATA_UNITS_GIGABYTE, L"10", L"10 GB"},
-#ifdef NDEBUG
-    {-1, DATA_UNITS_BYTE, L"", L""},
-#endif
-  };
-
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
-    EXPECT_EQ(cases[i].expected,
-              FormatBytes(cases[i].bytes, cases[i].units, false));
-    EXPECT_EQ(cases[i].expected_with_units,
-              FormatBytes(cases[i].bytes, cases[i].units, true));
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(utf8_to_wide_cases); ++i) {
+    size_t offset = utf8_to_wide_cases[i].input_offset;
+    UTF8ToWideAndAdjustOffset(utf8_to_wide_cases[i].utf8, &offset);
+    EXPECT_EQ(utf8_to_wide_cases[i].output_offset, offset);
   }
-}
 
-TEST(StringUtilTest, ReplaceSubstringsAfterOffset) {
-  static const struct {
-    const char* str;
-    string16::size_type start_offset;
-    const char* find_this;
-    const char* replace_with;
-    const char* expected;
-  } cases[] = {
-    {"aaa", 0, "a", "b", "bbb"},
-    {"abb", 0, "ab", "a", "ab"},
-    {"Removing some substrings inging", 0, "ing", "", "Remov some substrs "},
-    {"Not found", 0, "x", "0", "Not found"},
-    {"Not found again", 5, "x", "0", "Not found again"},
-    {" Making it much longer ", 0, " ", "Four score and seven years ago",
-     "Four score and seven years agoMakingFour score and seven years agoit"
-     "Four score and seven years agomuchFour score and seven years agolonger"
-     "Four score and seven years ago"},
-    {"Invalid offset", 9999, "t", "foobar", "Invalid offset"},
-    {"Replace me only me once", 9, "me ", "", "Replace me only once"},
-    {"abababab", 2, "ab", "c", "abccc"},
+#if defined(WCHAR_T_IS_UTF32)
+  struct WideToUTF16Case {
+    const wchar_t* wide;
+    size_t input_offset;
+    size_t output_offset;
+  } wide_to_utf16_cases[] = {
+    {L"\x4F60\x597D", 1, 1},
+    {L"\x20000\x4E00", 1, 2},
   };
-
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); i++) {
-    string16 str = ASCIIToUTF16(cases[i].str);
-    ReplaceSubstringsAfterOffset(&str, cases[i].start_offset,
-                                 ASCIIToUTF16(cases[i].find_this),
-                                 ASCIIToUTF16(cases[i].replace_with));
-    EXPECT_EQ(ASCIIToUTF16(cases[i].expected), str);
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(wide_to_utf16_cases); ++i) {
+    size_t offset = wide_to_utf16_cases[i].input_offset;
+    WideToUTF16AndAdjustOffset(wide_to_utf16_cases[i].wide, &offset);
+    EXPECT_EQ(wide_to_utf16_cases[i].output_offset, offset);
   }
-}
 
-TEST(StringUtilTest, ReplaceFirstSubstringAfterOffset) {
-  static const struct {
-    const char* str;
-    string16::size_type start_offset;
-    const char* find_this;
-    const char* replace_with;
-    const char* expected;
-  } cases[] = {
-    {"aaa", 0, "a", "b", "baa"},
-    {"abb", 0, "ab", "a", "ab"},
-    {"Removing some substrings inging", 0, "ing", "",
-      "Remov some substrings inging"},
-    {"Not found", 0, "x", "0", "Not found"},
-    {"Not found again", 5, "x", "0", "Not found again"},
-    {" Making it much longer ", 0, " ", "Four score and seven years ago",
-     "Four score and seven years agoMaking it much longer "},
-    {"Invalid offset", 9999, "t", "foobar", "Invalid offset"},
-    {"Replace me only me once", 4, "me ", "", "Replace only me once"},
-    {"abababab", 2, "ab", "c", "abcabab"},
+  struct UTF16ToWideCase {
+    const wchar_t* wide;
+    size_t input_offset;
+    size_t output_offset;
+  } utf16_to_wide_cases[] = {
+    {L"\xD840\xDC00\x4E00", 0, 0},
+    {L"\xD840\xDC00\x4E00", 1, std::wstring::npos},
+    {L"\xD840\xDC00\x4E00", 2, 1},
   };
-
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); i++) {
-    string16 str = ASCIIToUTF16(cases[i].str);
-    ReplaceFirstSubstringAfterOffset(&str, cases[i].start_offset,
-                                     ASCIIToUTF16(cases[i].find_this),
-                                     ASCIIToUTF16(cases[i].replace_with));
-    EXPECT_EQ(ASCIIToUTF16(cases[i].expected), str);
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(utf16_to_wide_cases); ++i) {
+    size_t offset = utf16_to_wide_cases[i].input_offset;
+    UTF16ToWideAndAdjustOffset(BuildString16(utf16_to_wide_cases[i].wide),
+                               &offset);
+    EXPECT_EQ(utf16_to_wide_cases[i].output_offset, offset);
   }
-}
-
-namespace {
-
-template <typename INT>
-struct IntToStringTest {
-  INT num;
-  const char* sexpected;
-  const char* uexpected;
-};
-
-}
-
-TEST(StringUtilTest, IntToString) {
-
-  static const IntToStringTest<int> int_tests[] = {
-      { 0, "0", "0" },
-      { -1, "-1", "4294967295" },
-      { std::numeric_limits<int>::max(), "2147483647", "2147483647" },
-      { std::numeric_limits<int>::min(), "-2147483648", "2147483648" },
-  };
-  static const IntToStringTest<int64> int64_tests[] = {
-      { 0, "0", "0" },
-      { -1, "-1", "18446744073709551615" },
-      { std::numeric_limits<int64>::max(),
-        "9223372036854775807",
-        "9223372036854775807", },
-      { std::numeric_limits<int64>::min(),
-        "-9223372036854775808",
-        "9223372036854775808" },
-  };
-
-  for (size_t i = 0; i < arraysize(int_tests); ++i) {
-    const IntToStringTest<int>* test = &int_tests[i];
-    EXPECT_EQ(IntToString(test->num), test->sexpected);
-    EXPECT_EQ(IntToWString(test->num), UTF8ToWide(test->sexpected));
-    EXPECT_EQ(UintToString(test->num), test->uexpected);
-    EXPECT_EQ(UintToWString(test->num), UTF8ToWide(test->uexpected));
-  }
-  for (size_t i = 0; i < arraysize(int64_tests); ++i) {
-    const IntToStringTest<int64>* test = &int64_tests[i];
-    EXPECT_EQ(Int64ToString(test->num), test->sexpected);
-    EXPECT_EQ(Int64ToWString(test->num), UTF8ToWide(test->sexpected));
-    EXPECT_EQ(Uint64ToString(test->num), test->uexpected);
-    EXPECT_EQ(Uint64ToWString(test->num), UTF8ToWide(test->uexpected));
-  }
-}
-
-TEST(StringUtilTest, Uint64ToString) {
-  static const struct {
-    uint64 input;
-    std::string output;
-  } cases[] = {
-    {0, "0"},
-    {42, "42"},
-    {INT_MAX, "2147483647"},
-    {kuint64max, "18446744073709551615"},
-  };
-
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i)
-    EXPECT_EQ(cases[i].output, Uint64ToString(cases[i].input));
-}
-
-TEST(StringUtilTest, StringToInt) {
-  static const struct {
-    std::string input;
-    int output;
-    bool success;
-  } cases[] = {
-    {"0", 0, true},
-    {"42", 42, true},
-    {"-2147483648", INT_MIN, true},
-    {"2147483647", INT_MAX, true},
-    {"", 0, false},
-    {" 42", 42, false},
-    {"42 ", 42, false},
-    {"\t\n\v\f\r 42", 42, false},
-    {"blah42", 0, false},
-    {"42blah", 42, false},
-    {"blah42blah", 0, false},
-    {"-273.15", -273, false},
-    {"+98.6", 98, false},
-    {"--123", 0, false},
-    {"++123", 0, false},
-    {"-+123", 0, false},
-    {"+-123", 0, false},
-    {"-", 0, false},
-    {"-2147483649", INT_MIN, false},
-    {"-99999999999", INT_MIN, false},
-    {"2147483648", INT_MAX, false},
-    {"99999999999", INT_MAX, false},
-  };
-
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
-    EXPECT_EQ(cases[i].output, StringToInt(cases[i].input));
-    int output;
-    EXPECT_EQ(cases[i].success, StringToInt(cases[i].input, &output));
-    EXPECT_EQ(cases[i].output, output);
-
-    std::wstring wide_input = ASCIIToWide(cases[i].input);
-    EXPECT_EQ(cases[i].output, StringToInt(WideToUTF16Hack(wide_input)));
-    EXPECT_EQ(cases[i].success, StringToInt(WideToUTF16Hack(wide_input),
-                                            &output));
-    EXPECT_EQ(cases[i].output, output);
-  }
-
-  // One additional test to verify that conversion of numbers in strings with
-  // embedded NUL characters.  The NUL and extra data after it should be
-  // interpreted as junk after the number.
-  const char input[] = "6\06";
-  std::string input_string(input, arraysize(input) - 1);
-  int output;
-  EXPECT_FALSE(StringToInt(input_string, &output));
-  EXPECT_EQ(6, output);
-
-  std::wstring wide_input = ASCIIToWide(input_string);
-  EXPECT_FALSE(StringToInt(WideToUTF16Hack(wide_input), &output));
-  EXPECT_EQ(6, output);
-}
-
-TEST(StringUtilTest, StringToInt64) {
-  static const struct {
-    std::string input;
-    int64 output;
-    bool success;
-  } cases[] = {
-    {"0", 0, true},
-    {"42", 42, true},
-    {"-2147483648", INT_MIN, true},
-    {"2147483647", INT_MAX, true},
-    {"-2147483649", GG_INT64_C(-2147483649), true},
-    {"-99999999999", GG_INT64_C(-99999999999), true},
-    {"2147483648", GG_INT64_C(2147483648), true},
-    {"99999999999", GG_INT64_C(99999999999), true},
-    {"9223372036854775807", kint64max, true},
-    {"-9223372036854775808", kint64min, true},
-    {"09", 9, true},
-    {"-09", -9, true},
-    {"", 0, false},
-    {" 42", 42, false},
-    {"42 ", 42, false},
-    {"\t\n\v\f\r 42", 42, false},
-    {"blah42", 0, false},
-    {"42blah", 42, false},
-    {"blah42blah", 0, false},
-    {"-273.15", -273, false},
-    {"+98.6", 98, false},
-    {"--123", 0, false},
-    {"++123", 0, false},
-    {"-+123", 0, false},
-    {"+-123", 0, false},
-    {"-", 0, false},
-    {"-9223372036854775809", kint64min, false},
-    {"-99999999999999999999", kint64min, false},
-    {"9223372036854775808", kint64max, false},
-    {"99999999999999999999", kint64max, false},
-  };
-
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
-    EXPECT_EQ(cases[i].output, StringToInt64(cases[i].input));
-    int64 output;
-    EXPECT_EQ(cases[i].success, StringToInt64(cases[i].input, &output));
-    EXPECT_EQ(cases[i].output, output);
-
-    std::wstring wide_input = ASCIIToWide(cases[i].input);
-    EXPECT_EQ(cases[i].output, StringToInt64(WideToUTF16Hack(wide_input)));
-    EXPECT_EQ(cases[i].success, StringToInt64(WideToUTF16Hack(wide_input),
-                                              &output));
-    EXPECT_EQ(cases[i].output, output);
-  }
-
-  // One additional test to verify that conversion of numbers in strings with
-  // embedded NUL characters.  The NUL and extra data after it should be
-  // interpreted as junk after the number.
-  const char input[] = "6\06";
-  std::string input_string(input, arraysize(input) - 1);
-  int64 output;
-  EXPECT_FALSE(StringToInt64(input_string, &output));
-  EXPECT_EQ(6, output);
-
-  std::wstring wide_input = ASCIIToWide(input_string);
-  EXPECT_FALSE(StringToInt64(WideToUTF16Hack(wide_input), &output));
-  EXPECT_EQ(6, output);
-}
-
-TEST(StringUtilTest, HexStringToInt) {
-  static const struct {
-    std::string input;
-    int output;
-    bool success;
-  } cases[] = {
-    {"0", 0, true},
-    {"42", 66, true},
-    {"-42", -66, true},
-    {"+42", 66, true},
-    {"7fffffff", INT_MAX, true},
-    {"80000000", INT_MIN, true},
-    {"ffffffff", -1, true},
-    {"DeadBeef", 0xdeadbeef, true},
-    {"0x42", 66, true},
-    {"-0x42", -66, true},
-    {"+0x42", 66, true},
-    {"0x7fffffff", INT_MAX, true},
-    {"0x80000000", INT_MIN, true},
-    {"0xffffffff", -1, true},
-    {"0XDeadBeef", 0xdeadbeef, true},
-    {"0x0f", 15, true},
-    {"0f", 15, true},
-    {" 45", 0x45, false},
-    {"\t\n\v\f\r 0x45", 0x45, false},
-    {" 45", 0x45, false},
-    {"45 ", 0x45, false},
-    {"efgh", 0xef, false},
-    {"0xefgh", 0xef, false},
-    {"hgfe", 0, false},
-    {"100000000", -1, false},  // don't care about |output|, just |success|
-    {"-", 0, false},
-    {"", 0, false},
-  };
-
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
-    EXPECT_EQ(cases[i].output, HexStringToInt(cases[i].input));
-    int output;
-    EXPECT_EQ(cases[i].success, HexStringToInt(cases[i].input, &output));
-    EXPECT_EQ(cases[i].output, output);
-
-    std::wstring wide_input = ASCIIToWide(cases[i].input);
-    EXPECT_EQ(cases[i].output, HexStringToInt(WideToUTF16Hack(wide_input)));
-    EXPECT_EQ(cases[i].success, HexStringToInt(WideToUTF16Hack(wide_input),
-                                               &output));
-    EXPECT_EQ(cases[i].output, output);
-  }
-  // One additional test to verify that conversion of numbers in strings with
-  // embedded NUL characters.  The NUL and extra data after it should be
-  // interpreted as junk after the number.
-  const char input[] = "0xc0ffee\09";
-  std::string input_string(input, arraysize(input) - 1);
-  int output;
-  EXPECT_FALSE(HexStringToInt(input_string, &output));
-  EXPECT_EQ(0xc0ffee, output);
-
-  std::wstring wide_input = ASCIIToWide(input_string);
-  EXPECT_FALSE(HexStringToInt(WideToUTF16Hack(wide_input), &output));
-  EXPECT_EQ(0xc0ffee, output);
-}
-
-TEST(StringUtilTest, HexStringToBytes) {
-  static const struct {
-    const std::string input;
-    const char* output;
-    size_t output_len;
-    bool success;
-  } cases[] = {
-    {"0", "", 0, false},  // odd number of characters fails
-    {"00", "\0", 1, true},
-    {"42", "\x42", 1, true},
-    {"-42", "", 0, false},  // any non-hex value fails
-    {"+42", "", 0, false},
-    {"7fffffff", "\x7f\xff\xff\xff", 4, true},
-    {"80000000", "\x80\0\0\0", 4, true},
-    {"deadbeef", "\xde\xad\xbe\xef", 4, true},
-    {"DeadBeef", "\xde\xad\xbe\xef", 4, true},
-    {"0x42", "", 0, false},  // leading 0x fails (x is not hex)
-    {"0f", "\xf", 1, true},
-    {"45  ", "\x45", 1, false},
-    {"efgh", "\xef", 1, false},
-    {"", "", 0, false},
-    {"0123456789ABCDEF", "\x01\x23\x45\x67\x89\xAB\xCD\xEF", 8, true},
-    {"0123456789ABCDEF012345",
-     "\x01\x23\x45\x67\x89\xAB\xCD\xEF\x01\x23\x45", 11, true},
-  };
-
-
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
-    std::vector<uint8> output;
-    std::vector<uint8> compare;
-    EXPECT_EQ(cases[i].success, HexStringToBytes(cases[i].input, &output)) <<
-        i << ": " << cases[i].input;
-    for (size_t j = 0; j < cases[i].output_len; ++j)
-      compare.push_back(static_cast<uint8>(cases[i].output[j]));
-    ASSERT_EQ(output.size(), compare.size()) << i << ": " << cases[i].input;
-    EXPECT_TRUE(std::equal(output.begin(), output.end(), compare.begin())) <<
-        i << ": " << cases[i].input;
-
-    output.clear();
-    compare.clear();
-
-    std::wstring wide_input = ASCIIToWide(cases[i].input);
-    EXPECT_EQ(cases[i].success,
-              HexStringToBytes(WideToUTF16Hack(wide_input), &output)) <<
-        i << ": " << cases[i].input;
-    for (size_t j = 0; j < cases[i].output_len; ++j)
-      compare.push_back(static_cast<uint8>(cases[i].output[j]));
-    ASSERT_EQ(output.size(), compare.size()) << i << ": " << cases[i].input;
-    EXPECT_TRUE(std::equal(output.begin(), output.end(), compare.begin())) <<
-        i << ": " << cases[i].input;
-  }
-}
-
-TEST(StringUtilTest, StringToDouble) {
-  static const struct {
-    std::string input;
-    double output;
-    bool success;
-  } cases[] = {
-    {"0", 0.0, true},
-    {"42", 42.0, true},
-    {"-42", -42.0, true},
-    {"123.45", 123.45, true},
-    {"-123.45", -123.45, true},
-    {"+123.45", 123.45, true},
-    {"2.99792458e8", 299792458.0, true},
-    {"149597870.691E+3", 149597870691.0, true},
-    {"6.", 6.0, true},
-    {"9e99999999999999999999", HUGE_VAL, false},
-    {"-9e99999999999999999999", -HUGE_VAL, false},
-    {"1e-2", 0.01, true},
-    {" 1e-2", 0.01, false},
-    {"1e-2 ", 0.01, false},
-    {"-1E-7", -0.0000001, true},
-    {"01e02", 100, true},
-    {"2.3e15", 2.3e15, true},
-    {"\t\n\v\f\r -123.45e2", -12345.0, false},
-    {"+123 e4", 123.0, false},
-    {"123e ", 123.0, false},
-    {"123e", 123.0, false},
-    {" 2.99", 2.99, false},
-    {"1e3.4", 1000.0, false},
-    {"nothing", 0.0, false},
-    {"-", 0.0, false},
-    {"+", 0.0, false},
-    {"", 0.0, false},
-  };
-
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
-    EXPECT_DOUBLE_EQ(cases[i].output, StringToDouble(cases[i].input));
-    double output;
-    EXPECT_EQ(cases[i].success, StringToDouble(cases[i].input, &output));
-    EXPECT_DOUBLE_EQ(cases[i].output, output);
-
-    std::wstring wide_input = ASCIIToWide(cases[i].input);
-    EXPECT_DOUBLE_EQ(cases[i].output,
-                     StringToDouble(WideToUTF16Hack(wide_input)));
-    EXPECT_EQ(cases[i].success, StringToDouble(WideToUTF16Hack(wide_input),
-                                               &output));
-    EXPECT_DOUBLE_EQ(cases[i].output, output);
-  }
-
-  // One additional test to verify that conversion of numbers in strings with
-  // embedded NUL characters.  The NUL and extra data after it should be
-  // interpreted as junk after the number.
-  const char input[] = "3.14\0159";
-  std::string input_string(input, arraysize(input) - 1);
-  double output;
-  EXPECT_FALSE(StringToDouble(input_string, &output));
-  EXPECT_DOUBLE_EQ(3.14, output);
-
-  std::wstring wide_input = ASCIIToWide(input_string);
-  EXPECT_FALSE(StringToDouble(WideToUTF16Hack(wide_input), &output));
-  EXPECT_DOUBLE_EQ(3.14, output);
-}
-
-// This checks where we can use the assignment operator for a va_list. We need
-// a way to do this since Visual C doesn't support va_copy, but assignment on
-// va_list is not guaranteed to be a copy. See StringAppendVT which uses this
-// capability.
-static void VariableArgsFunc(const char* format, ...) {
-  va_list org;
-  va_start(org, format);
-
-  va_list dup;
-  GG_VA_COPY(dup, org);
-  int i1 = va_arg(org, int);
-  int j1 = va_arg(org, int);
-  char* s1 = va_arg(org, char*);
-  double d1 = va_arg(org, double);
-  va_end(org);
-
-  int i2 = va_arg(dup, int);
-  int j2 = va_arg(dup, int);
-  char* s2 = va_arg(dup, char*);
-  double d2 = va_arg(dup, double);
-
-  EXPECT_EQ(i1, i2);
-  EXPECT_EQ(j1, j2);
-  EXPECT_STREQ(s1, s2);
-  EXPECT_EQ(d1, d2);
-
-  va_end(dup);
-}
-
-TEST(StringUtilTest, VAList) {
-  VariableArgsFunc("%d %d %s %lf", 45, 92, "This is interesting", 9.21);
-}
-
-TEST(StringUtilTest, StringPrintfEmptyFormat) {
-  const char* empty = "";
-  EXPECT_EQ("", StringPrintf(empty));
-  EXPECT_EQ("", StringPrintf("%s", ""));
-}
-
-TEST(StringUtilTest, StringPrintfMisc) {
-  EXPECT_EQ("123hello w", StringPrintf("%3d%2s %1c", 123, "hello", 'w'));
-  EXPECT_EQ(L"123hello w", StringPrintf(L"%3d%2ls %1lc", 123, L"hello", 'w'));
-}
-
-TEST(StringUtilTest, StringAppendfStringEmptyParam) {
-  std::string value("Hello");
-  StringAppendF(&value, "");
-  EXPECT_EQ("Hello", value);
-
-  std::wstring valuew(L"Hello");
-  StringAppendF(&valuew, L"");
-  EXPECT_EQ(L"Hello", valuew);
-}
-
-TEST(StringUtilTest, StringAppendfEmptyString) {
-  std::string value("Hello");
-  StringAppendF(&value, "%s", "");
-  EXPECT_EQ("Hello", value);
-
-  std::wstring valuew(L"Hello");
-  StringAppendF(&valuew, L"%ls", L"");
-  EXPECT_EQ(L"Hello", valuew);
-}
-
-TEST(StringUtilTest, StringAppendfString) {
-  std::string value("Hello");
-  StringAppendF(&value, " %s", "World");
-  EXPECT_EQ("Hello World", value);
-
-  std::wstring valuew(L"Hello");
-  StringAppendF(&valuew, L" %ls", L"World");
-  EXPECT_EQ(L"Hello World", valuew);
-}
-
-TEST(StringUtilTest, StringAppendfInt) {
-  std::string value("Hello");
-  StringAppendF(&value, " %d", 123);
-  EXPECT_EQ("Hello 123", value);
-
-  std::wstring valuew(L"Hello");
-  StringAppendF(&valuew, L" %d", 123);
-  EXPECT_EQ(L"Hello 123", valuew);
-}
-
-// Make sure that lengths exactly around the initial buffer size are handled
-// correctly.
-TEST(StringUtilTest, StringPrintfBounds) {
-  const int src_len = 1026;
-  char src[src_len];
-  for (size_t i = 0; i < arraysize(src); i++)
-    src[i] = 'A';
-
-  wchar_t srcw[src_len];
-  for (size_t i = 0; i < arraysize(srcw); i++)
-    srcw[i] = 'A';
-
-  for (int i = 1; i < 3; i++) {
-    src[src_len - i] = 0;
-    std::string out;
-    SStringPrintf(&out, "%s", src);
-    EXPECT_STREQ(src, out.c_str());
-
-    srcw[src_len - i] = 0;
-    std::wstring outw;
-    SStringPrintf(&outw, L"%ls", srcw);
-    EXPECT_STREQ(srcw, outw.c_str());
-  }
-}
-
-// Test very large sprintfs that will cause the buffer to grow.
-TEST(StringUtilTest, Grow) {
-  char src[1026];
-  for (size_t i = 0; i < arraysize(src); i++)
-    src[i] = 'A';
-  src[1025] = 0;
-
-  const char* fmt = "%sB%sB%sB%sB%sB%sB%s";
-
-  std::string out;
-  SStringPrintf(&out, fmt, src, src, src, src, src, src, src);
-
-  char* ref = new char[320000];
-#if defined(OS_WIN)
-  sprintf_s(ref, 320000, fmt, src, src, src, src, src, src, src);
-#elif defined(OS_POSIX)
-  snprintf(ref, 320000, fmt, src, src, src, src, src, src, src);
 #endif
-
-  EXPECT_STREQ(ref, out.c_str());
-  delete[] ref;
 }
 
-// Test the boundary condition for the size of the string_util's
-// internal buffer.
-TEST(StringUtilTest, GrowBoundary) {
-  const int string_util_buf_len = 1024;
-  // Our buffer should be one larger than the size of StringAppendVT's stack
-  // buffer.
-  const int buf_len = string_util_buf_len + 1;
-  char src[buf_len + 1];  // Need extra one for NULL-terminator.
-  for (int i = 0; i < buf_len; ++i)
-    src[i] = 'a';
-  src[buf_len] = 0;
-
-  std::string out;
-  SStringPrintf(&out, "%s", src);
-
-  EXPECT_STREQ(src, out.c_str());
-}
-
-// TODO(evanm): what's the proper cross-platform test here?
-#if defined(OS_WIN)
-// sprintf in Visual Studio fails when given U+FFFF. This tests that the
-// failure case is gracefuly handled.
-TEST(StringUtilTest, Invalid) {
-  wchar_t invalid[2];
-  invalid[0] = 0xffff;
-  invalid[1] = 0;
-
-  std::wstring out;
-  SStringPrintf(&out, L"%ls", invalid);
-  EXPECT_STREQ(L"", out.c_str());
-}
-#endif
-
-// Test for SplitString
-TEST(StringUtilTest, SplitString) {
-  std::vector<std::wstring> r;
-
-  SplitString(L"a,b,c", L',', &r);
-  EXPECT_EQ(3U, r.size());
-  EXPECT_EQ(r[0], L"a");
-  EXPECT_EQ(r[1], L"b");
-  EXPECT_EQ(r[2], L"c");
-  r.clear();
-
-  SplitString(L"a, b, c", L',', &r);
-  EXPECT_EQ(3U, r.size());
-  EXPECT_EQ(r[0], L"a");
-  EXPECT_EQ(r[1], L"b");
-  EXPECT_EQ(r[2], L"c");
-  r.clear();
-
-  SplitString(L"a,,c", L',', &r);
-  EXPECT_EQ(3U, r.size());
-  EXPECT_EQ(r[0], L"a");
-  EXPECT_EQ(r[1], L"");
-  EXPECT_EQ(r[2], L"c");
-  r.clear();
-
-  SplitString(L"", L'*', &r);
-  EXPECT_EQ(1U, r.size());
-  EXPECT_EQ(r[0], L"");
-  r.clear();
-
-  SplitString(L"foo", L'*', &r);
-  EXPECT_EQ(1U, r.size());
-  EXPECT_EQ(r[0], L"foo");
-  r.clear();
-
-  SplitString(L"foo ,", L',', &r);
-  EXPECT_EQ(2U, r.size());
-  EXPECT_EQ(r[0], L"foo");
-  EXPECT_EQ(r[1], L"");
-  r.clear();
-
-  SplitString(L",", L',', &r);
-  EXPECT_EQ(2U, r.size());
-  EXPECT_EQ(r[0], L"");
-  EXPECT_EQ(r[1], L"");
-  r.clear();
-
-  SplitString(L"\t\ta\t", L'\t', &r);
-  EXPECT_EQ(4U, r.size());
-  EXPECT_EQ(r[0], L"");
-  EXPECT_EQ(r[1], L"");
-  EXPECT_EQ(r[2], L"a");
-  EXPECT_EQ(r[3], L"");
-  r.clear();
-
-  SplitStringDontTrim(L"\t\ta\t", L'\t', &r);
-  EXPECT_EQ(4U, r.size());
-  EXPECT_EQ(r[0], L"");
-  EXPECT_EQ(r[1], L"");
-  EXPECT_EQ(r[2], L"a");
-  EXPECT_EQ(r[3], L"");
-  r.clear();
-
-  SplitString(L"\ta\t\nb\tcc", L'\n', &r);
-  EXPECT_EQ(2U, r.size());
-  EXPECT_EQ(r[0], L"a");
-  EXPECT_EQ(r[1], L"b\tcc");
-  r.clear();
-
-  SplitStringDontTrim(L"\ta\t\nb\tcc", L'\n', &r);
-  EXPECT_EQ(2U, r.size());
-  EXPECT_EQ(r[0], L"\ta\t");
-  EXPECT_EQ(r[1], L"b\tcc");
-  r.clear();
-}
-
-// Test for JoinString
-TEST(StringUtilTest, JoinString) {
-  std::vector<std::string> in;
-  EXPECT_EQ("", JoinString(in, ','));
-
-  in.push_back("a");
-  EXPECT_EQ("a", JoinString(in, ','));
-
-  in.push_back("b");
-  in.push_back("c");
-  EXPECT_EQ("a,b,c", JoinString(in, ','));
-
-  in.push_back("");
-  EXPECT_EQ("a,b,c,", JoinString(in, ','));
-  in.push_back(" ");
-  EXPECT_EQ("a|b|c|| ", JoinString(in, '|'));
-}
-
-TEST(StringUtilTest, StartsWith) {
-  EXPECT_TRUE(StartsWithASCII("javascript:url", "javascript", true));
-  EXPECT_FALSE(StartsWithASCII("JavaScript:url", "javascript", true));
-  EXPECT_TRUE(StartsWithASCII("javascript:url", "javascript", false));
-  EXPECT_TRUE(StartsWithASCII("JavaScript:url", "javascript", false));
-  EXPECT_FALSE(StartsWithASCII("java", "javascript", true));
-  EXPECT_FALSE(StartsWithASCII("java", "javascript", false));
-  EXPECT_FALSE(StartsWithASCII("", "javascript", false));
-  EXPECT_FALSE(StartsWithASCII("", "javascript", true));
-  EXPECT_TRUE(StartsWithASCII("java", "", false));
-  EXPECT_TRUE(StartsWithASCII("java", "", true));
-
-  EXPECT_TRUE(StartsWith(L"javascript:url", L"javascript", true));
-  EXPECT_FALSE(StartsWith(L"JavaScript:url", L"javascript", true));
-  EXPECT_TRUE(StartsWith(L"javascript:url", L"javascript", false));
-  EXPECT_TRUE(StartsWith(L"JavaScript:url", L"javascript", false));
-  EXPECT_FALSE(StartsWith(L"java", L"javascript", true));
-  EXPECT_FALSE(StartsWith(L"java", L"javascript", false));
-  EXPECT_FALSE(StartsWith(L"", L"javascript", false));
-  EXPECT_FALSE(StartsWith(L"", L"javascript", true));
-  EXPECT_TRUE(StartsWith(L"java", L"", false));
-  EXPECT_TRUE(StartsWith(L"java", L"", true));
-}
-
-TEST(StringUtilTest, EndsWith) {
-  EXPECT_TRUE(EndsWith(L"Foo.plugin", L".plugin", true));
-  EXPECT_FALSE(EndsWith(L"Foo.Plugin", L".plugin", true));
-  EXPECT_TRUE(EndsWith(L"Foo.plugin", L".plugin", false));
-  EXPECT_TRUE(EndsWith(L"Foo.Plugin", L".plugin", false));
-  EXPECT_FALSE(EndsWith(L".plug", L".plugin", true));
-  EXPECT_FALSE(EndsWith(L".plug", L".plugin", false));
-  EXPECT_FALSE(EndsWith(L"Foo.plugin Bar", L".plugin", true));
-  EXPECT_FALSE(EndsWith(L"Foo.plugin Bar", L".plugin", false));
-  EXPECT_FALSE(EndsWith(L"", L".plugin", false));
-  EXPECT_FALSE(EndsWith(L"", L".plugin", true));
-  EXPECT_TRUE(EndsWith(L"Foo.plugin", L"", false));
-  EXPECT_TRUE(EndsWith(L"Foo.plugin", L"", true));
-  EXPECT_TRUE(EndsWith(L".plugin", L".plugin", false));
-  EXPECT_TRUE(EndsWith(L".plugin", L".plugin", true));
-  EXPECT_TRUE(EndsWith(L"", L"", false));
-  EXPECT_TRUE(EndsWith(L"", L"", true));
-}
-
-TEST(StringUtilTest, GetStringFWithOffsets) {
-  std::vector<string16> subst;
-  subst.push_back(ASCIIToUTF16("1"));
-  subst.push_back(ASCIIToUTF16("2"));
-  std::vector<size_t> offsets;
-
-  ReplaceStringPlaceholders(ASCIIToUTF16("Hello, $1. Your number is $2."),
-                            subst,
-                            &offsets);
-  EXPECT_EQ(2U, offsets.size());
-  EXPECT_EQ(7U, offsets[0]);
-  EXPECT_EQ(25U, offsets[1]);
-  offsets.clear();
-
-  ReplaceStringPlaceholders(ASCIIToUTF16("Hello, $2. Your number is $1."),
-                            subst,
-                            &offsets);
-  EXPECT_EQ(2U, offsets.size());
-  EXPECT_EQ(25U, offsets[0]);
-  EXPECT_EQ(7U, offsets[1]);
-  offsets.clear();
-}
-
-TEST(StringUtilTest, ReplaceStringPlaceholders) {
-  std::vector<string16> subst;
-  subst.push_back(ASCIIToUTF16("9a"));
-  subst.push_back(ASCIIToUTF16("8b"));
-  subst.push_back(ASCIIToUTF16("7c"));
-  subst.push_back(ASCIIToUTF16("6d"));
-  subst.push_back(ASCIIToUTF16("5e"));
-  subst.push_back(ASCIIToUTF16("4f"));
-  subst.push_back(ASCIIToUTF16("3g"));
-  subst.push_back(ASCIIToUTF16("2h"));
-  subst.push_back(ASCIIToUTF16("1i"));
-
-  string16 formatted =
-      ReplaceStringPlaceholders(
-          ASCIIToUTF16("$1a,$2b,$3c,$4d,$5e,$6f,$7g,$8h,$9i"), subst, NULL);
-
-  EXPECT_EQ(formatted, ASCIIToUTF16("9aa,8bb,7cc,6dd,5ee,4ff,3gg,2hh,1ii"));
-}
-
-TEST(StringUtilTest, ReplaceStringPlaceholdersTooFew) {
-  // Test whether replacestringplaceholders works as expected when there
-  // are fewer inputs than outputs.
-  std::vector<string16> subst;
-  subst.push_back(ASCIIToUTF16("9a"));
-  subst.push_back(ASCIIToUTF16("8b"));
-  subst.push_back(ASCIIToUTF16("7c"));
-
-  string16 formatted =
-      ReplaceStringPlaceholders(
-          ASCIIToUTF16("$1a,$2b,$3c,$4d,$5e,$6f,$1g,$2h,$3i"), subst, NULL);
-
-  EXPECT_EQ(formatted, ASCIIToUTF16("9aa,8bb,7cc,d,e,f,9ag,8bh,7ci"));
-}
-
-TEST(StringUtilTest, StdStringReplaceStringPlaceholders) {
-  std::vector<std::string> subst;
-  subst.push_back("9a");
-  subst.push_back("8b");
-  subst.push_back("7c");
-  subst.push_back("6d");
-  subst.push_back("5e");
-  subst.push_back("4f");
-  subst.push_back("3g");
-  subst.push_back("2h");
-  subst.push_back("1i");
-
-  std::string formatted =
-      ReplaceStringPlaceholders(
-          "$1a,$2b,$3c,$4d,$5e,$6f,$7g,$8h,$9i", subst, NULL);
-
-  EXPECT_EQ(formatted, "9aa,8bb,7cc,6dd,5ee,4ff,3gg,2hh,1ii");
-}
-
-TEST(StringUtilTest, SplitStringAlongWhitespace) {
-  struct TestData {
-    const std::wstring input;
-    const size_t expected_result_count;
-    const std::wstring output1;
-    const std::wstring output2;
-  } data[] = {
-    { L"a",       1, L"a",  L""   },
-    { L" ",       0, L"",   L""   },
-    { L" a",      1, L"a",  L""   },
-    { L" ab ",    1, L"ab", L""   },
-    { L" ab c",   2, L"ab", L"c"  },
-    { L" ab c ",  2, L"ab", L"c"  },
-    { L" ab cd",  2, L"ab", L"cd" },
-    { L" ab cd ", 2, L"ab", L"cd" },
-    { L" \ta\t",  1, L"a",  L""   },
-    { L" b\ta\t", 2, L"b",  L"a"  },
-    { L" b\tat",  2, L"b",  L"at" },
-    { L"b\tat",   2, L"b",  L"at" },
-    { L"b\t at",  2, L"b",  L"at" },
-  };
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(data); ++i) {
-    std::vector<std::wstring> results;
-    SplitStringAlongWhitespace(data[i].input, &results);
-    ASSERT_EQ(data[i].expected_result_count, results.size());
-    if (data[i].expected_result_count > 0)
-      ASSERT_EQ(data[i].output1, results[0]);
-    if (data[i].expected_result_count > 1)
-      ASSERT_EQ(data[i].output2, results[1]);
-  }
-}
-
-TEST(StringUtilTest, MatchPatternTest) {
-  EXPECT_EQ(MatchPattern(L"www.google.com", L"*.com"), true);
-  EXPECT_EQ(MatchPattern(L"www.google.com", L"*"), true);
-  EXPECT_EQ(MatchPattern(L"www.google.com", L"www*.g*.org"), false);
-  EXPECT_EQ(MatchPattern(L"Hello", L"H?l?o"), true);
-  EXPECT_EQ(MatchPattern(L"www.google.com", L"http://*)"), false);
-  EXPECT_EQ(MatchPattern(L"www.msn.com", L"*.COM"), false);
-  EXPECT_EQ(MatchPattern(L"Hello*1234", L"He??o\\*1*"), true);
-  EXPECT_EQ(MatchPattern(L"", L"*.*"), false);
-  EXPECT_EQ(MatchPattern(L"", L"*"), true);
-  EXPECT_EQ(MatchPattern(L"", L"?"), true);
-  EXPECT_EQ(MatchPattern(L"", L""), true);
-  EXPECT_EQ(MatchPattern(L"Hello", L""), false);
-  EXPECT_EQ(MatchPattern(L"Hello*", L"Hello*"), true);
-  EXPECT_EQ(MatchPattern("Hello*", "Hello*"), true);  // narrow string
-}
-
-TEST(StringUtilTest, LcpyTest) {
-  // Test the normal case where we fit in our buffer.
-  {
-    char dst[10];
-    wchar_t wdst[10];
-    EXPECT_EQ(7U, base::strlcpy(dst, "abcdefg", arraysize(dst)));
-    EXPECT_EQ(0, memcmp(dst, "abcdefg", 8));
-    EXPECT_EQ(7U, base::wcslcpy(wdst, L"abcdefg", arraysize(wdst)));
-    EXPECT_EQ(0, memcmp(wdst, L"abcdefg", sizeof(wchar_t) * 8));
-  }
-
-  // Test dst_size == 0, nothing should be written to |dst| and we should
-  // have the equivalent of strlen(src).
-  {
-    char dst[2] = {1, 2};
-    wchar_t wdst[2] = {1, 2};
-    EXPECT_EQ(7U, base::strlcpy(dst, "abcdefg", 0));
-    EXPECT_EQ(1, dst[0]);
-    EXPECT_EQ(2, dst[1]);
-    EXPECT_EQ(7U, base::wcslcpy(wdst, L"abcdefg", 0));
-#if defined(WCHAR_T_IS_UNSIGNED)
-    EXPECT_EQ(1U, wdst[0]);
-    EXPECT_EQ(2U, wdst[1]);
-#else
-    EXPECT_EQ(1, wdst[0]);
-    EXPECT_EQ(2, wdst[1]);
-#endif
-  }
-
-  // Test the case were we _just_ competely fit including the null.
-  {
-    char dst[8];
-    wchar_t wdst[8];
-    EXPECT_EQ(7U, base::strlcpy(dst, "abcdefg", arraysize(dst)));
-    EXPECT_EQ(0, memcmp(dst, "abcdefg", 8));
-    EXPECT_EQ(7U, base::wcslcpy(wdst, L"abcdefg", arraysize(wdst)));
-    EXPECT_EQ(0, memcmp(wdst, L"abcdefg", sizeof(wchar_t) * 8));
-  }
-
-  // Test the case were we we are one smaller, so we can't fit the null.
-  {
-    char dst[7];
-    wchar_t wdst[7];
-    EXPECT_EQ(7U, base::strlcpy(dst, "abcdefg", arraysize(dst)));
-    EXPECT_EQ(0, memcmp(dst, "abcdef", 7));
-    EXPECT_EQ(7U, base::wcslcpy(wdst, L"abcdefg", arraysize(wdst)));
-    EXPECT_EQ(0, memcmp(wdst, L"abcdef", sizeof(wchar_t) * 7));
-  }
-
-  // Test the case were we are just too small.
-  {
-    char dst[3];
-    wchar_t wdst[3];
-    EXPECT_EQ(7U, base::strlcpy(dst, "abcdefg", arraysize(dst)));
-    EXPECT_EQ(0, memcmp(dst, "ab", 3));
-    EXPECT_EQ(7U, base::wcslcpy(wdst, L"abcdefg", arraysize(wdst)));
-    EXPECT_EQ(0, memcmp(wdst, L"ab", sizeof(wchar_t) * 3));
-  }
-}
-
-TEST(StringUtilTest, WprintfFormatPortabilityTest) {
-  struct TestData {
-    const wchar_t* input;
-    bool portable;
-  } cases[] = {
-    { L"%ls", true },
-    { L"%s", false },
-    { L"%S", false },
-    { L"%lS", false },
-    { L"Hello, %s", false },
-    { L"%lc", true },
-    { L"%c", false },
-    { L"%C", false },
-    { L"%lC", false },
-    { L"%ls %s", false },
-    { L"%s %ls", false },
-    { L"%s %ls %s", false },
-    { L"%f", true },
-    { L"%f %F", false },
-    { L"%d %D", false },
-    { L"%o %O", false },
-    { L"%u %U", false },
-    { L"%f %d %o %u", true },
-    { L"%-8d (%02.1f%)", true },
-    { L"% 10s", false },
-    { L"% 10ls", true }
-  };
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
-    EXPECT_EQ(cases[i].portable, base::IsWprintfFormatPortable(cases[i].input));
-  }
-}
-
-TEST(StringUtilTest, ElideString) {
-  struct TestData {
-    const wchar_t* input;
-    int max_len;
-    bool result;
-    const wchar_t* output;
-  } cases[] = {
-    { L"Hello", 0, true, L"" },
-    { L"", 0, false, L"" },
-    { L"Hello, my name is Tom", 1, true, L"H" },
-    { L"Hello, my name is Tom", 2, true, L"He" },
-    { L"Hello, my name is Tom", 3, true, L"H.m" },
-    { L"Hello, my name is Tom", 4, true, L"H..m" },
-    { L"Hello, my name is Tom", 5, true, L"H...m" },
-    { L"Hello, my name is Tom", 6, true, L"He...m" },
-    { L"Hello, my name is Tom", 7, true, L"He...om" },
-    { L"Hello, my name is Tom", 10, true, L"Hell...Tom" },
-    { L"Hello, my name is Tom", 100, false, L"Hello, my name is Tom" }
-  };
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
-    std::wstring output;
-    EXPECT_EQ(cases[i].result,
-              ElideString(cases[i].input, cases[i].max_len, &output));
-    EXPECT_TRUE(output == cases[i].output);
-  }
-}
-
-TEST(StringUtilTest, HexEncode) {
-  std::string hex(HexEncode(NULL, 0));
-  EXPECT_EQ(hex.length(), 0U);
-  unsigned char bytes[] = {0x01, 0xff, 0x02, 0xfe, 0x03, 0x80, 0x81};
-  hex = HexEncode(bytes, sizeof(bytes));
-  EXPECT_EQ(hex.compare("01FF02FE038081"), 0);
-}
-
 }  // namaspace base