// Copyright (c) 2011 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 "net/base/net_util.h"

#include <algorithm>

#include "base/file_path.h"
#include "base/format_macros.h"
#include "base/string_number_conversions.h"
#include "base/string_util.h"
#include "base/stringprintf.h"
#include "base/sys_string_conversions.h"
#include "base/test/test_file_util.h"
#include "base/time.h"
#include "base/utf_string_conversions.h"
#include "googleurl/src/gurl.h"
#include "net/base/sys_addrinfo.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace net {

namespace {

static const size_t kNpos = string16::npos;

struct FileCase {
  const wchar_t* file;
  const char* url;
};

struct HeaderCase {
  const wchar_t* header_name;
  const wchar_t* expected;
};

struct HeaderParamCase {
  const wchar_t* header_name;
  const wchar_t* param_name;
  const wchar_t* expected;
};

struct FileNameCDCase {
  const char* header_field;
  const char* referrer_charset;
  const wchar_t* expected;
};

const wchar_t* kLanguages[] = {
  L"",      L"en",    L"zh-CN",       L"ja",    L"ko",
  L"he",    L"ar",    L"ru",          L"el",    L"fr",
  L"de",    L"pt",    L"sv",          L"th",    L"hi",
  L"de,en", L"el,en", L"zh-TW,en",    L"ko,ja", L"he,ru,en",
  L"zh,ru,en"
};

struct IDNTestCase {
  const char* input;
  const wchar_t* unicode_output;
  const bool unicode_allowed[arraysize(kLanguages)];
};

// TODO(jungshik) This is just a random sample of languages and is far
// from exhaustive.  We may have to generate all the combinations
// of languages (powerset of a set of all the languages).
const IDNTestCase idn_cases[] = {
  // No IDN
  {"www.google.com", L"www.google.com",
   {true,  true,  true,  true,  true,
    true,  true,  true,  true,  true,
    true,  true,  true,  true,  true,
    true,  true,  true,  true,  true,
    true}},
  {"www.google.com.", L"www.google.com.",
   {true,  true,  true,  true,  true,
    true,  true,  true,  true,  true,
    true,  true,  true,  true,  true,
    true,  true,  true,  true,  true,
    true}},
  {".", L".",
   {true,  true,  true,  true,  true,
    true,  true,  true,  true,  true,
    true,  true,  true,  true,  true,
    true,  true,  true,  true,  true,
    true}},
  {"", L"",
   {true,  true,  true,  true,  true,
    true,  true,  true,  true,  true,
    true,  true,  true,  true,  true,
    true,  true,  true,  true,  true,
    true}},
  // IDN
  // Hanzi (Traditional Chinese)
  {"xn--1lq90ic7f1rc.cn", L"\x5317\x4eac\x5927\x5b78.cn",
   {true,  false, true,  true,  false,
    false, false, false, false, false,
    false, false, false, false, false,
    false, false, true,  true,  false,
    true}},
  // Hanzi ('video' in Simplified Chinese : will pass only in zh-CN,zh)
  {"xn--cy2a840a.com", L"\x89c6\x9891.com",
   {true,  false, true,  false,  false,
    false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, false,  false,
    true}},
  // Hanzi + '123'
  {"www.xn--123-p18d.com", L"www.\x4e00" L"123.com",
   {true,  false, true,  true,  false,
    false, false, false, false, false,
    false, false, false, false, false,
    false, false, true,  true,  false,
    true}},
  // Hanzi + Latin : U+56FD is simplified and is regarded
  // as not supported in zh-TW.
  {"www.xn--hello-9n1hm04c.com", L"www.hello\x4e2d\x56fd.com",
   {false, false, true,  true,  false,
    false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, true,  false,
    true}},
  // Kanji + Kana (Japanese)
  {"xn--l8jvb1ey91xtjb.jp", L"\x671d\x65e5\x3042\x3055\x3072.jp",
   {true,  false, false, true,  false,
    false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, true,  false,
    false}},
  // Katakana including U+30FC
  {"xn--tckm4i2e.jp", L"\x30b3\x30de\x30fc\x30b9.jp",
   {true, false, false, true,  false,
    false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, true, false,
    }},
  {"xn--3ck7a7g.jp", L"\u30ce\u30f3\u30bd.jp",
   {true, false, false, true,  false,
    false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, true, false,
    }},
  // Katakana + Latin (Japanese)
  // TODO(jungshik): Change 'false' in the first element to 'true'
  // after upgrading to ICU 4.2.1 to use new uspoof_* APIs instead
  // of our IsIDNComponentInSingleScript().
  {"xn--e-efusa1mzf.jp", L"e\x30b3\x30de\x30fc\x30b9.jp",
   {false, false, false, true,  false,
    false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, true, false,
    }},
  {"xn--3bkxe.jp", L"\x30c8\x309a.jp",
   {false, false, false, true,  false,
    false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, true, false,
    }},
  // Hangul (Korean)
  {"www.xn--or3b17p6jjc.kr", L"www.\xc804\xc790\xc815\xbd80.kr",
   {true,  false, false, false, true,
    false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, true,  false,
    false}},
  // b<u-umlaut>cher (German)
  {"xn--bcher-kva.de", L"b\x00fc" L"cher.de",
   {true,  false, false, false, false,
    false, false, false, false, true,
    true,  false,  false, false, false,
    true,  false, false, false, false,
    false}},
  // a with diaeresis
  {"www.xn--frgbolaget-q5a.se", L"www.f\x00e4rgbolaget.se",
   {true,  false, false, false, false,
    false, false, false, false, false,
    true,  false, true, false, false,
    true,  false, false, false, false,
    false}},
  // c-cedilla (French)
  {"www.xn--alliancefranaise-npb.fr", L"www.alliancefran\x00e7" L"aise.fr",
   {true,  false, false, false, false,
    false, false, false, false, true,
    false, true,  false, false, false,
    false, false, false, false, false,
    false}},
  // caf'e with acute accent' (French)
  {"xn--caf-dma.fr", L"caf\x00e9.fr",
   {true,  false, false, false, false,
    false, false, false, false, true,
    false, true,  true,  false, false,
    false, false, false, false, false,
    false}},
  // c-cedillla and a with tilde (Portuguese)
  {"xn--poema-9qae5a.com.br", L"p\x00e3oema\x00e7\x00e3.com.br",
   {true,  false, false, false, false,
    false, false, false, false, false,
    false, true,  false, false, false,
    false, false, false, false, false,
    false}},
  // s with caron
  {"xn--achy-f6a.com", L"\x0161" L"achy.com",
   {true,  false, false, false, false,
    false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, false, false,
    false}},
  // TODO(jungshik) : Add examples with Cyrillic letters
  // only used in some languages written in Cyrillic.
  // Eutopia (Greek)
  {"xn--kxae4bafwg.gr", L"\x03bf\x03c5\x03c4\x03bf\x03c0\x03af\x03b1.gr",
   {true,  false, false, false, false,
    false, false, false, true,  false,
    false, false, false, false, false,
    false, true,  false, false, false,
    false}},
  // Eutopia + 123 (Greek)
  {"xn---123-pldm0haj2bk.gr",
   L"\x03bf\x03c5\x03c4\x03bf\x03c0\x03af\x03b1-123.gr",
   {true,  false, false, false, false,
    false, false, false, true,  false,
    false, false, false, false, false,
    false, true,  false, false, false,
    false}},
  // Cyrillic (Russian)
  {"xn--n1aeec9b.ru", L"\x0442\x043e\x0440\x0442\x044b.ru",
   {true,  false, false, false, false,
    false, false, true,  false, false,
    false, false, false, false, false,
    false, false, false, false, true,
    true}},
  // Cyrillic + 123 (Russian)
  {"xn---123-45dmmc5f.ru", L"\x0442\x043e\x0440\x0442\x044b-123.ru",
   {true,  false, false, false, false,
    false, false, true,  false, false,
    false, false, false, false, false,
    false, false, false, false, true,
    true}},
  // Arabic
  {"xn--mgba1fmg.ar", L"\x0627\x0641\x0644\x0627\x0645.ar",
   {true,  false, false, false, false,
    false, true,  false, false, false,
    false, false, false, false, false,
    false, false, false, false, false,
    false}},
  // Hebrew
  {"xn--4dbib.he", L"\x05d5\x05d0\x05d4.he",
   {true,  false, false, false, false,
    true,  false, false, false, false,
    false, false, false, false, false,
    false, false, false, false, true,
    false}},
  // Thai
  {"xn--12c2cc4ag3b4ccu.th",
   L"\x0e2a\x0e32\x0e22\x0e01\x0e32\x0e23\x0e1a\x0e34\x0e19.th",
   {true,  false, false, false, false,
    false, false, false, false, false,
    false, false, false, true,  false,
    false, false, false, false, false,
    false}},
  // Devangari (Hindi)
  {"www.xn--l1b6a9e1b7c.in", L"www.\x0905\x0915\x094b\x0932\x093e.in",
   {true,  false, false, false, false,
    false, false, false, false, false,
    false, false, false, false, true,
    false, false, false, false, false,
    false}},
  // Invalid IDN
  {"xn--hello?world.com", NULL,
   {false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, false, false,
    false}},
  // Unsafe IDNs
  // "payp<alpha>l.com"
  {"www.xn--paypl-g9d.com", L"payp\x03b1l.com",
   {false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, false, false,
    false}},
  // google.gr with Greek omicron and epsilon
  {"xn--ggl-6xc1ca.gr", L"g\x03bf\x03bfgl\x03b5.gr",
   {false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, false, false,
    false}},
  // google.ru with Cyrillic o
  {"xn--ggl-tdd6ba.ru", L"g\x043e\x043egl\x0435.ru",
   {false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, false, false,
    false}},
  // h<e with acute>llo<China in Han>.cn
  {"xn--hllo-bpa7979ih5m.cn", L"h\x00e9llo\x4e2d\x56fd.cn",
   {false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, false, false,
    false}},
  // <Greek rho><Cyrillic a><Cyrillic u>.ru
  {"xn--2xa6t2b.ru", L"\x03c1\x0430\x0443.ru",
   {false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, false, false,
    false, false, false, false, false,
    false}},
  // One that's really long that will force a buffer realloc
  {"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
       "aaaaaaa",
   L"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
       L"aaaaaaaa",
   {true,  true,  true,  true,  true,
    true,  true,  true,  true,  true,
    true,  true,  true,  true,  true,
    true,  true,  true,  true,  true,
    true}},
  // Test cases for characters we blacklisted although allowed in IDN.
  // Embedded spaces will be turned to %20 in the display.
  // TODO(jungshik): We need to have more cases. This is a typical
  // data-driven trap. The following test cases need to be separated
  // and tested only for a couple of languages.
  {"xn--osd3820f24c.kr", L"\xac00\xb098\x115f.kr",
    {false, false, false, false, false,
     false, false, false, false, false,
     false, false, false, false, false,
     false, false, false, false, false,
     false}},
  {"www.xn--google-ho0coa.com", L"www.\x2039google\x203a.com",
    {false, false, false, false, false,
     false, false, false, false, false,
     false, false, false, false, false,
     false, false, false, false, false,
  }},
  {"google.xn--comabc-k8d", L"google.com\x0338" L"abc",
    {false, false, false, false, false,
     false, false, false, false, false,
     false, false, false, false, false,
     false, false, false, false, false,
  }},
  {"google.xn--com-oh4ba.evil.jp", L"google.com\x309a\x309a.evil.jp",
    {false, false, false, false, false,
     false, false, false, false, false,
     false, false, false, false, false,
     false, false, false, false, false,
  }},
  {"google.xn--comevil-v04f.jp", L"google.com\x30ce" L"evil.jp",
    {false, false, false, false, false,
     false, false, false, false, false,
     false, false, false, false, false,
     false, false, false, false, false,
  }},
#if 0
  // These two cases are special. We need a separate test.
  // U+3000 and U+3002 are normalized to ASCII space and dot.
  {"xn-- -kq6ay5z.cn", L"\x4e2d\x56fd\x3000.cn",
    {false, false, true,  false, false,
     false, false, false, false, false,
     false, false, false, false, false,
     false, false, true,  false, false,
     true}},
  {"xn--fiqs8s.cn", L"\x4e2d\x56fd\x3002" L"cn",
    {false, false, true,  false, false,
     false, false, false, false, false,
     false, false, false, false, false,
     false, false, true,  false, false,
     true}},
#endif
};

struct AdjustOffsetCase {
  size_t input_offset;
  size_t output_offset;
};

struct CompliantHostCase {
  const char* host;
  const char* desired_tld;
  bool expected_output;
};

struct SuggestedFilenameCase {
  const char* url;
  const char* content_disp_header;
  const char* referrer_charset;
  const wchar_t* default_filename;
  const wchar_t* expected_filename;
};

struct UrlTestData {
  const char* description;
  const char* input;
  const char* languages;
  FormatUrlTypes format_types;
  UnescapeRule::Type escape_rules;
  const wchar_t* output;  // Use |wchar_t| to handle Unicode constants easily.
  size_t prefix_len;
};

// Returns an addrinfo for the given 32-bit address (IPv4.)
// The result lives in static storage, so don't delete it.
// |bytes| should be an array of length 4.
const struct addrinfo* GetIPv4Address(const uint8* bytes, int port) {
  static struct addrinfo static_ai;
  static struct sockaddr_in static_addr4;

  struct addrinfo* ai = &static_ai;
  ai->ai_socktype = SOCK_STREAM;
  memset(ai, 0, sizeof(static_ai));

  ai->ai_family = AF_INET;
  ai->ai_addrlen = sizeof(static_addr4);

  struct sockaddr_in* addr4 = &static_addr4;
  memset(addr4, 0, sizeof(static_addr4));
  addr4->sin_port = htons(port);
  addr4->sin_family = ai->ai_family;
  memcpy(&addr4->sin_addr, bytes, 4);

  ai->ai_addr = (sockaddr*)addr4;
  return ai;
}

// Returns a addrinfo for the given 128-bit address (IPv6.)
// The result lives in static storage, so don't delete it.
// |bytes| should be an array of length 16.
const struct addrinfo* GetIPv6Address(const uint8* bytes, int port) {
  static struct addrinfo static_ai;
  static struct sockaddr_in6 static_addr6;

  struct addrinfo* ai = &static_ai;
  ai->ai_socktype = SOCK_STREAM;
  memset(ai, 0, sizeof(static_ai));

  ai->ai_family = AF_INET6;
  ai->ai_addrlen = sizeof(static_addr6);

  struct sockaddr_in6* addr6 = &static_addr6;
  memset(addr6, 0, sizeof(static_addr6));
  addr6->sin6_port = htons(port);
  addr6->sin6_family = ai->ai_family;
  memcpy(&addr6->sin6_addr, bytes, 16);

  ai->ai_addr = (sockaddr*)addr6;
  return ai;
}

// A helper for IDN*{Fast,Slow}.
// Append "::<language list>" to |expected| and |actual| to make it
// easy to tell which sub-case fails without debugging.
void AppendLanguagesToOutputs(const wchar_t* languages,
                              std::wstring* expected,
                              std::wstring* actual) {
  expected->append(L"::");
  expected->append(languages);
  actual->append(L"::");
  actual->append(languages);
}

// Helper to strignize an IP number (used to define expectations).
std::string DumpIPNumber(const IPAddressNumber& v) {
  std::string out;
  for (size_t i = 0; i < v.size(); ++i) {
    if (i != 0)
      out.append(",");
    out.append(base::IntToString(static_cast<int>(v[i])));
  }
  return out;
}

}  // anonymous namespace

TEST(NetUtilTest, FileURLConversion) {
  // a list of test file names and the corresponding URLs
  const FileCase round_trip_cases[] = {
#if defined(OS_WIN)
    {L"C:\\foo\\bar.txt", "file:///C:/foo/bar.txt"},
    {L"\\\\some computer\\foo\\bar.txt",
     "file://some%20computer/foo/bar.txt"}, // UNC
    {L"D:\\Name;with%some symbols*#",
     "file:///D:/Name%3Bwith%25some%20symbols*%23"},
    // issue 14153: To be tested with the OS default codepage other than 1252.
    {L"D:\\latin1\\caf\x00E9\x00DD.txt",
     "file:///D:/latin1/caf%C3%A9%C3%9D.txt"},
    {L"D:\\otherlatin\\caf\x0119.txt",
     "file:///D:/otherlatin/caf%C4%99.txt"},
    {L"D:\\greek\\\x03B1\x03B2\x03B3.txt",
     "file:///D:/greek/%CE%B1%CE%B2%CE%B3.txt"},
    {L"D:\\Chinese\\\x6240\x6709\x4e2d\x6587\x7f51\x9875.doc",
     "file:///D:/Chinese/%E6%89%80%E6%9C%89%E4%B8%AD%E6%96%87%E7%BD%91"
         "%E9%A1%B5.doc"},
    {L"D:\\plane1\\\xD835\xDC00\xD835\xDC01.txt",  // Math alphabet "AB"
     "file:///D:/plane1/%F0%9D%90%80%F0%9D%90%81.txt"},
#elif defined(OS_POSIX)
    {L"/foo/bar.txt", "file:///foo/bar.txt"},
    {L"/foo/BAR.txt", "file:///foo/BAR.txt"},
    {L"/C:/foo/bar.txt", "file:///C:/foo/bar.txt"},
    {L"/some computer/foo/bar.txt", "file:///some%20computer/foo/bar.txt"},
    {L"/Name;with%some symbols*#", "file:///Name%3Bwith%25some%20symbols*%23"},
    {L"/latin1/caf\x00E9\x00DD.txt", "file:///latin1/caf%C3%A9%C3%9D.txt"},
    {L"/otherlatin/caf\x0119.txt", "file:///otherlatin/caf%C4%99.txt"},
    {L"/greek/\x03B1\x03B2\x03B3.txt", "file:///greek/%CE%B1%CE%B2%CE%B3.txt"},
    {L"/Chinese/\x6240\x6709\x4e2d\x6587\x7f51\x9875.doc",
     "file:///Chinese/%E6%89%80%E6%9C%89%E4%B8%AD%E6%96%87%E7%BD"
         "%91%E9%A1%B5.doc"},
    {L"/plane1/\x1D400\x1D401.txt",  // Math alphabet "AB"
     "file:///plane1/%F0%9D%90%80%F0%9D%90%81.txt"},
#endif
  };

  // First, we'll test that we can round-trip all of the above cases of URLs
  FilePath output;
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(round_trip_cases); i++) {
    // convert to the file URL
    GURL file_url(FilePathToFileURL(
                      file_util::WStringAsFilePath(round_trip_cases[i].file)));
    EXPECT_EQ(round_trip_cases[i].url, file_url.spec());

    // Back to the filename.
    EXPECT_TRUE(FileURLToFilePath(file_url, &output));
    EXPECT_EQ(round_trip_cases[i].file, file_util::FilePathAsWString(output));
  }

  // Test that various file: URLs get decoded into the correct file type
  FileCase url_cases[] = {
#if defined(OS_WIN)
    {L"C:\\foo\\bar.txt", "file:c|/foo\\bar.txt"},
    {L"C:\\foo\\bar.txt", "file:/c:/foo/bar.txt"},
    {L"\\\\foo\\bar.txt", "file://foo\\bar.txt"},
    {L"C:\\foo\\bar.txt", "file:///c:/foo/bar.txt"},
    {L"\\\\foo\\bar.txt", "file:////foo\\bar.txt"},
    {L"\\\\foo\\bar.txt", "file:/foo/bar.txt"},
    {L"\\\\foo\\bar.txt", "file://foo\\bar.txt"},
    {L"C:\\foo\\bar.txt", "file:\\\\\\c:/foo/bar.txt"},
#elif defined(OS_POSIX)
    {L"/c:/foo/bar.txt", "file:/c:/foo/bar.txt"},
    {L"/c:/foo/bar.txt", "file:///c:/foo/bar.txt"},
    {L"/foo/bar.txt", "file:/foo/bar.txt"},
    {L"/c:/foo/bar.txt", "file:\\\\\\c:/foo/bar.txt"},
    {L"/foo/bar.txt", "file:foo/bar.txt"},
    {L"/bar.txt", "file://foo/bar.txt"},
    {L"/foo/bar.txt", "file:///foo/bar.txt"},
    {L"/foo/bar.txt", "file:////foo/bar.txt"},
    {L"/foo/bar.txt", "file:////foo//bar.txt"},
    {L"/foo/bar.txt", "file:////foo///bar.txt"},
    {L"/foo/bar.txt", "file:////foo////bar.txt"},
    {L"/c:/foo/bar.txt", "file:\\\\\\c:/foo/bar.txt"},
    {L"/c:/foo/bar.txt", "file:c:/foo/bar.txt"},
    // We get these wrong because GURL turns back slashes into forward
    // slashes.
    //{L"/foo%5Cbar.txt", "file://foo\\bar.txt"},
    //{L"/c|/foo%5Cbar.txt", "file:c|/foo\\bar.txt"},
    //{L"/foo%5Cbar.txt", "file://foo\\bar.txt"},
    //{L"/foo%5Cbar.txt", "file:////foo\\bar.txt"},
    //{L"/foo%5Cbar.txt", "file://foo\\bar.txt"},
#endif
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(url_cases); i++) {
    FileURLToFilePath(GURL(url_cases[i].url), &output);
    EXPECT_EQ(url_cases[i].file, file_util::FilePathAsWString(output));
  }

  // Unfortunately, UTF8ToWide discards invalid UTF8 input.
#ifdef BUG_878908_IS_FIXED
  // Test that no conversion happens if the UTF-8 input is invalid, and that
  // the input is preserved in UTF-8
  const char invalid_utf8[] = "file:///d:/Blah/\xff.doc";
  const wchar_t invalid_wide[] = L"D:\\Blah\\\xff.doc";
  EXPECT_TRUE(FileURLToFilePath(
      GURL(std::string(invalid_utf8)), &output));
  EXPECT_EQ(std::wstring(invalid_wide), output);
#endif

  // Test that if a file URL is malformed, we get a failure
  EXPECT_FALSE(FileURLToFilePath(GURL("filefoobar"), &output));
}

TEST(NetUtilTest, GetIdentityFromURL) {
  struct {
    const char* input_url;
    const char* expected_username;
    const char* expected_password;
  } tests[] = {
    {
      "http://username:password@google.com",
      "username",
      "password",
    },
    { // Test for http://crbug.com/19200
      "http://username:p@ssword@google.com",
      "username",
      "p@ssword",
    },
    { // Special URL characters should be unescaped.
      "http://username:p%3fa%26s%2fs%23@google.com",
      "username",
      "p?a&s/s#",
    },
    { // Username contains %20.
      "http://use rname:password@google.com",
      "use rname",
      "password",
    },
    { // Keep %00 as is.
      "http://use%00rname:password@google.com",
      "use%00rname",
      "password",
    },
    { // Use a '+' in the username.
      "http://use+rname:password@google.com",
      "use+rname",
      "password",
    },
    { // Use a '&' in the password.
      "http://username:p&ssword@google.com",
      "username",
      "p&ssword",
    },
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) {
    SCOPED_TRACE(base::StringPrintf("Test[%" PRIuS "]: %s", i,
                                    tests[i].input_url));
    GURL url(tests[i].input_url);

    string16 username, password;
    GetIdentityFromURL(url, &username, &password);

    EXPECT_EQ(ASCIIToUTF16(tests[i].expected_username), username);
    EXPECT_EQ(ASCIIToUTF16(tests[i].expected_password), password);
  }
}

// Try extracting a username which was encoded with UTF8.
TEST(NetUtilTest, GetIdentityFromURL_UTF8) {
  GURL url(WideToUTF16(L"http://foo:\x4f60\x597d@blah.com"));

  EXPECT_EQ("foo", url.username());
  EXPECT_EQ("%E4%BD%A0%E5%A5%BD", url.password());

  // Extract the unescaped identity.
  string16 username, password;
  GetIdentityFromURL(url, &username, &password);

  // Verify that it was decoded as UTF8.
  EXPECT_EQ(ASCIIToUTF16("foo"), username);
  EXPECT_EQ(WideToUTF16(L"\x4f60\x597d"), password);
}

// Just a bunch of fake headers.
const wchar_t* google_headers =
    L"HTTP/1.1 200 OK\n"
    L"Content-TYPE: text/html; charset=utf-8\n"
    L"Content-disposition: attachment; filename=\"download.pdf\"\n"
    L"Content-Length: 378557\n"
    L"X-Google-Google1: 314159265\n"
    L"X-Google-Google2: aaaa2:7783,bbb21:9441\n"
    L"X-Google-Google4: home\n"
    L"Transfer-Encoding: chunked\n"
    L"Set-Cookie: HEHE_AT=6666x66beef666x6-66xx6666x66; Path=/mail\n"
    L"Set-Cookie: HEHE_HELP=owned:0;Path=/\n"
    L"Set-Cookie: S=gmail=Xxx-beefbeefbeef_beefb:gmail_yj=beefbeef000beefbee"
        L"fbee:gmproxy=bee-fbeefbe; Domain=.google.com; Path=/\n"
    L"X-Google-Google2: /one/two/three/four/five/six/seven-height/nine:9411\n"
    L"Server: GFE/1.3\n"
    L"Transfer-Encoding: chunked\n"
    L"Date: Mon, 13 Nov 2006 21:38:09 GMT\n"
    L"Expires: Tue, 14 Nov 2006 19:23:58 GMT\n"
    L"X-Malformed: bla; arg=test\"\n"
    L"X-Malformed2: bla; arg=\n"
    L"X-Test: bla; arg1=val1; arg2=val2";

TEST(NetUtilTest, GetSpecificHeader) {
  const HeaderCase tests[] = {
    {L"content-type", L"text/html; charset=utf-8"},
    {L"CONTENT-LENGTH", L"378557"},
    {L"Date", L"Mon, 13 Nov 2006 21:38:09 GMT"},
    {L"Bad-Header", L""},
    {L"", L""},
  };

  // Test first with google_headers.
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) {
    std::wstring result = GetSpecificHeader(google_headers,
                                                 tests[i].header_name);
    EXPECT_EQ(result, tests[i].expected);
  }

  // Test again with empty headers.
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) {
    std::wstring result = GetSpecificHeader(L"", tests[i].header_name);
    EXPECT_EQ(result, std::wstring());
  }
}

TEST(NetUtilTest, GetHeaderParamValue) {
  const HeaderParamCase tests[] = {
    {L"Content-type", L"charset", L"utf-8"},
    {L"content-disposition", L"filename", L"download.pdf"},
    {L"Content-Type", L"badparam", L""},
    {L"X-Malformed", L"arg", L"test\""},
    {L"X-Malformed2", L"arg", L""},
    {L"X-Test", L"arg1", L"val1"},
    {L"X-Test", L"arg2", L"val2"},
    {L"Bad-Header", L"badparam", L""},
    {L"Bad-Header", L"", L""},
    {L"", L"badparam", L""},
    {L"", L"", L""},
  };
  // TODO(mpcomplete): add tests for other formats of headers.

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) {
    std::wstring header_value =
        GetSpecificHeader(google_headers, tests[i].header_name);
    std::wstring result =
        GetHeaderParamValue(header_value, tests[i].param_name,
                            QuoteRule::REMOVE_OUTER_QUOTES);
    EXPECT_EQ(result, tests[i].expected);
  }

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) {
    std::wstring header_value =
        GetSpecificHeader(L"", tests[i].header_name);
    std::wstring result =
        GetHeaderParamValue(header_value, tests[i].param_name,
                            QuoteRule::REMOVE_OUTER_QUOTES);
    EXPECT_EQ(result, std::wstring());
  }
}

TEST(NetUtilTest, GetHeaderParamValueQuotes) {
  struct {
    const char* header;
    const char* expected_with_quotes;
    const char* expected_without_quotes;
  } tests[] = {
    {"filename=foo", "foo", "foo"},
    {"filename=\"foo\"", "\"foo\"", "foo"},
    {"filename=foo\"", "foo\"", "foo\""},
    {"filename=fo\"o", "fo\"o", "fo\"o"},
  };

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) {
    std::string actual_with_quotes =
        GetHeaderParamValue(tests[i].header, "filename",
                            QuoteRule::KEEP_OUTER_QUOTES);
    std::string actual_without_quotes =
        GetHeaderParamValue(tests[i].header, "filename",
                            QuoteRule::REMOVE_OUTER_QUOTES);
    EXPECT_EQ(tests[i].expected_with_quotes, actual_with_quotes)
        << "Failed while processing: " << tests[i].header;
    EXPECT_EQ(tests[i].expected_without_quotes, actual_without_quotes)
        << "Failed while processing: " << tests[i].header;
  }
}

TEST(NetUtilTest, GetFileNameFromCD) {
  const FileNameCDCase tests[] = {
    // Test various forms of C-D header fields emitted by web servers.
    {"content-disposition: inline; filename=\"abcde.pdf\"", "", L"abcde.pdf"},
    {"content-disposition: inline; name=\"abcde.pdf\"", "", L"abcde.pdf"},
    {"content-disposition: attachment; filename=abcde.pdf", "", L"abcde.pdf"},
    {"content-disposition: attachment; name=abcde.pdf", "", L"abcde.pdf"},
    {"content-disposition: attachment; filename=abc,de.pdf", "", L"abc,de.pdf"},
    {"content-disposition: filename=abcde.pdf", "", L"abcde.pdf"},
    {"content-disposition: filename= abcde.pdf", "", L"abcde.pdf"},
    {"content-disposition: filename =abcde.pdf", "", L"abcde.pdf"},
    {"content-disposition: filename = abcde.pdf", "", L"abcde.pdf"},
    {"content-disposition: filename\t=abcde.pdf", "", L"abcde.pdf"},
    {"content-disposition: filename \t\t  =abcde.pdf", "", L"abcde.pdf"},
    {"content-disposition: name=abcde.pdf", "", L"abcde.pdf"},
    {"content-disposition: inline; filename=\"abc%20de.pdf\"", "",
     L"abc de.pdf"},
    // Unbalanced quotation mark
    {"content-disposition: filename=\"abcdef.pdf", "", L"abcdef.pdf"},
    // Whitespaces are converted to a space.
    {"content-disposition: inline; filename=\"abc  \t\nde.pdf\"", "",
     L"abc    de.pdf"},
    // %-escaped UTF-8
    {"Content-Disposition: attachment; filename=\"%EC%98%88%EC%88%A0%20"
     "%EC%98%88%EC%88%A0.jpg\"", "", L"\xc608\xc220 \xc608\xc220.jpg"},
    {"Content-Disposition: attachment; filename=\"%F0%90%8C%B0%F0%90%8C%B1"
     "abc.jpg\"", "", L"\U00010330\U00010331abc.jpg"},
    {"Content-Disposition: attachment; filename=\"%EC%98%88%EC%88%A0 \n"
     "%EC%98%88%EC%88%A0.jpg\"", "", L"\xc608\xc220  \xc608\xc220.jpg"},
    // RFC 2047 with various charsets and Q/B encodings
    {"Content-Disposition: attachment; filename=\"=?EUC-JP?Q?=B7=DD=BD="
     "D13=2Epng?=\"", "", L"\x82b8\x8853" L"3.png"},
    {"Content-Disposition: attachment; filename==?eUc-Kr?b?v7m8+iAzLnBuZw==?=",
     "", L"\xc608\xc220 3.png"},
    {"Content-Disposition: attachment; filename==?utf-8?Q?=E8=8A=B8=E8"
     "=A1=93_3=2Epng?=", "", L"\x82b8\x8853 3.png"},
    {"Content-Disposition: attachment; filename==?utf-8?Q?=F0=90=8C=B0"
     "_3=2Epng?=", "", L"\U00010330 3.png"},
    {"Content-Disposition: inline; filename=\"=?iso88591?Q?caf=e9_=2epng?=\"",
     "", L"caf\x00e9 .png"},
    // Space after an encoded word should be removed.
    {"Content-Disposition: inline; filename=\"=?iso88591?Q?caf=E9_?= .png\"",
     "", L"caf\x00e9 .png"},
    // Two encoded words with different charsets (not very likely to be emitted
    // by web servers in the wild). Spaces between them are removed.
    {"Content-Disposition: inline; filename=\"=?euc-kr?b?v7m8+iAz?="
     " =?ksc5601?q?=BF=B9=BC=FA=2Epng?=\"", "",
     L"\xc608\xc220 3\xc608\xc220.png"},
    {"Content-Disposition: attachment; filename=\"=?windows-1252?Q?caf=E9?="
     "  =?iso-8859-7?b?4eI=?= .png\"", "", L"caf\x00e9\x03b1\x03b2.png"},
    // Non-ASCII string is passed through and treated as UTF-8 as long as
    // it's valid as UTF-8 and regardless of |referrer_charset|.
    {"Content-Disposition: attachment; filename=caf\xc3\xa9.png",
     "iso-8859-1", L"caf\x00e9.png"},
    {"Content-Disposition: attachment; filename=caf\xc3\xa9.png",
     "", L"caf\x00e9.png"},
    // Non-ASCII/Non-UTF-8 string. Fall back to the referrer charset.
    {"Content-Disposition: attachment; filename=caf\xe5.png",
     "windows-1253", L"caf\x03b5.png"},
#if 0
    // Non-ASCII/Non-UTF-8 string. Fall back to the native codepage.
    // TODO(jungshik): We need to set the OS default codepage
    // to a specific value before testing. On Windows, we can use
    // SetThreadLocale().
    {"Content-Disposition: attachment; filename=\xb0\xa1\xb0\xa2.png",
     "", L"\xac00\xac01.png"},
#endif
    // Failure cases
    // Invalid hex-digit "G"
    {"Content-Disposition: attachment; filename==?iiso88591?Q?caf=EG?=", "",
     L""},
    // Incomplete RFC 2047 encoded-word (missing '='' at the end)
    {"Content-Disposition: attachment; filename==?iso88591?Q?caf=E3?", "", L""},
    // Extra character at the end of an encoded word
    {"Content-Disposition: attachment; filename==?iso88591?Q?caf=E3?==",
     "", L""},
    // Extra token at the end of an encoded word
    {"Content-Disposition: attachment; filename==?iso88591?Q?caf=E3?=?",
     "", L""},
    {"Content-Disposition: attachment; filename==?iso88591?Q?caf=E3?=?=",
     "",  L""},
    // Incomplete hex-escaped chars
    {"Content-Disposition: attachment; filename==?windows-1252?Q?=63=61=E?=",
     "", L""},
    {"Content-Disposition: attachment; filename=%EC%98%88%EC%88%A", "", L""},
    // %-escaped non-UTF-8 encoding is an "error"
    {"Content-Disposition: attachment; filename=%B7%DD%BD%D1.png", "", L""},
    // Two RFC 2047 encoded words in a row without a space is an error.
    {"Content-Disposition: attachment; filename==?windows-1252?Q?caf=E3?="
     "=?iso-8859-7?b?4eIucG5nCg==?=", "", L""},

    // RFC 5987 tests with Filename*  : see http://tools.ietf.org/html/rfc5987
    {"Content-Disposition: attachment; filename*=foo.html", "", L""},
    {"Content-Disposition: attachment; filename*=foo'.html", "", L""},
    {"Content-Disposition: attachment; filename*=''foo'.html", "", L""},
    {"Content-Disposition: attachment; filename*=''foo.html'", "", L""},
    {"Content-Disposition: attachment; filename*=''f\"oo\".html'", "", L""},
    {"Content-Disposition: attachment; filename*=bogus_charset''foo.html'",
     "", L""},
    {"Content-Disposition: attachment; filename*='en'foo.html'", "", L""},
    {"Content-Disposition: attachment; filename*=iso-8859-1'en'foo.html", "",
      L"foo.html"},
    {"Content-Disposition: attachment; filename*=utf-8'en'foo.html", "",
      L"foo.html"},
    // charset cannot be omitted.
    {"Content-Disposition: attachment; filename*='es'f\xfa.html'", "", L""},
    // Non-ASCII bytes are not allowed.
    {"Content-Disposition: attachment; filename*=iso-8859-1'es'f\xfa.html", "",
      L""},
    {"Content-Disposition: attachment; filename*=utf-8'es'f\xce\xba.html", "",
      L""},
    // TODO(jshin): Space should be %-encoded, but currently, we allow
    // spaces.
    {"Content-Disposition: inline; filename*=iso88591''cafe foo.png", "",
      L"cafe foo.png"},

    // Filename* tests converted from Q-encoded tests above.
    {"Content-Disposition: attachment; filename*=EUC-JP''%B7%DD%BD%D13%2Epng",
     "", L"\x82b8\x8853" L"3.png"},
    {"Content-Disposition: attachment; filename*=utf-8''"
      "%E8%8A%B8%E8%A1%93%203%2Epng", "", L"\x82b8\x8853 3.png"},
    {"Content-Disposition: attachment; filename*=utf-8''%F0%90%8C%B0 3.png", "",
      L"\U00010330 3.png"},
    {"Content-Disposition: inline; filename*=Euc-Kr'ko'%BF%B9%BC%FA%2Epng", "",
     L"\xc608\xc220.png"},
    {"Content-Disposition: attachment; filename*=windows-1252''caf%E9.png", "",
      L"caf\x00e9.png"},

    // http://greenbytes.de/tech/tc2231/ filename* test cases.
    // attwithisofn2231iso
    {"Content-Disposition: attachment; filename*=iso-8859-1''foo-%E4.html", "",
      L"foo-\xe4.html"},
    // attwithfn2231utf8
    {"Content-Disposition: attachment; filename*="
      "UTF-8''foo-%c3%a4-%e2%82%ac.html", "", L"foo-\xe4-\x20ac.html"},
    // attwithfn2231noc : no encoding specified but UTF-8 is used.
    {"Content-Disposition: attachment; filename*=''foo-%c3%a4-%e2%82%ac.html",
      "", L""},
    // attwithfn2231utf8comp
    {"Content-Disposition: attachment; filename*=UTF-8''foo-a%cc%88.html", "",
      L"foo-\xe4.html"},
#ifdef ICU_SHOULD_FAIL_CONVERSION_ON_INVALID_CHARACTER
    // This does not work because we treat ISO-8859-1 synonymous with
    // Windows-1252 per HTML5. For HTTP, in theory, we're not
    // supposed to.
    // attwithfn2231utf8-bad
    {"Content-Disposition: attachment; filename*="
      "iso-8859-1''foo-%c3%a4-%e2%82%ac.html", "", L""},
#endif
    // attwithfn2231ws1
    {"Content-Disposition: attachment; filename *=UTF-8''foo-%c3%a4.html", "",
      L""},
    // attwithfn2231ws2
    {"Content-Disposition: attachment; filename*= UTF-8''foo-%c3%a4.html", "",
      L"foo-\xe4.html"},
    // attwithfn2231ws3
    {"Content-Disposition: attachment; filename* =UTF-8''foo-%c3%a4.html", "",
      L"foo-\xe4.html"},
    // attwithfn2231quot
    {"Content-Disposition: attachment; filename*=\"UTF-8''foo-%c3%a4.html\"",
      "", L""},
    // attfnboth
    {"Content-Disposition: attachment; filename=\"foo-ae.html\"; "
      "filename*=UTF-8''foo-%c3%a4.html", "", L"foo-\xe4.html"},
    // attfnboth2
    {"Content-Disposition: attachment; filename*=UTF-8''foo-%c3%a4.html; "
      "filename=\"foo-ae.html\"", "", L"foo-\xe4.html"},
    // attnewandfn
    {"Content-Disposition: attachment; foobar=x; filename=\"foo.html\"", "",
      L"foo.html"},
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) {
    EXPECT_EQ(tests[i].expected,
              UTF8ToWide(GetFileNameFromCD(tests[i].header_field,
                                           tests[i].referrer_charset)))
        << "Failed on input: " << tests[i].header_field;
  }
}

TEST(NetUtilTest, IDNToUnicodeFast) {
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(idn_cases); i++) {
    for (size_t j = 0; j < arraysize(kLanguages); j++) {
      // ja || zh-TW,en || ko,ja -> IDNToUnicodeSlow
      if (j == 3 || j == 17 || j == 18)
        continue;
      std::wstring output(IDNToUnicode(idn_cases[i].input,
          strlen(idn_cases[i].input), kLanguages[j], NULL));
      std::wstring expected(idn_cases[i].unicode_allowed[j] ?
          idn_cases[i].unicode_output : ASCIIToWide(idn_cases[i].input));
      AppendLanguagesToOutputs(kLanguages[j], &expected, &output);
      EXPECT_EQ(expected, output);
    }
  }
}

TEST(NetUtilTest, IDNToUnicodeSlow) {
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(idn_cases); i++) {
    for (size_t j = 0; j < arraysize(kLanguages); j++) {
      // !(ja || zh-TW,en || ko,ja) -> IDNToUnicodeFast
      if (!(j == 3 || j == 17 || j == 18))
        continue;
      std::wstring output(IDNToUnicode(idn_cases[i].input,
          strlen(idn_cases[i].input), kLanguages[j], NULL));
      std::wstring expected(idn_cases[i].unicode_allowed[j] ?
          idn_cases[i].unicode_output : ASCIIToWide(idn_cases[i].input));
      AppendLanguagesToOutputs(kLanguages[j], &expected, &output);
      EXPECT_EQ(expected, output);
    }
  }
}

TEST(NetUtilTest, IDNToUnicodeAdjustOffset) {
  const AdjustOffsetCase adjust_cases[] = {
    {0, 0},
    {2, 2},
    {4, 4},
    {5, 5},
    {6, string16::npos},
    {16, string16::npos},
    {17, 7},
    {18, 8},
    {19, string16::npos},
    {25, string16::npos},
    {34, 12},
    {35, 13},
    {38, 16},
    {39, string16::npos},
    {string16::npos, string16::npos},
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(adjust_cases); ++i) {
    size_t offset = adjust_cases[i].input_offset;
    // "test.\x89c6\x9891.\x5317\x4eac\x5927\x5b78.test"
    IDNToUnicode("test.xn--cy2a840a.xn--1lq90ic7f1rc.test", 39, L"zh-CN",
                      &offset);
    EXPECT_EQ(adjust_cases[i].output_offset, offset);
  }

  std::vector<size_t> offsets;
  for (size_t i = 0; i < 40; ++i)
    offsets.push_back(i);
  IDNToUnicodeWithOffsets("test.xn--cy2a840a.xn--1lq90ic7f1rc.test", 39,
                          L"zh-CN", &offsets);
  size_t expected[] = {0, 1, 2, 3, 4, 5, kNpos, kNpos, kNpos, kNpos, kNpos,
                       kNpos, kNpos, kNpos, kNpos, kNpos, kNpos, 7, 8, kNpos,
                       kNpos, kNpos, kNpos, kNpos, kNpos, kNpos, kNpos, kNpos,
                       kNpos, kNpos, kNpos, kNpos, kNpos, kNpos, 12, 13, 14, 15,
                       16, kNpos};
  ASSERT_EQ(40U, arraysize(expected));
  for (size_t i = 0; i < 40; ++i)
    EXPECT_EQ(expected[i], offsets[i]);
}

TEST(NetUtilTest, CompliantHost) {
  const CompliantHostCase compliant_host_cases[] = {
    {"", "", false},
    {"a", "", true},
    {"-", "", false},
    {".", "", false},
    {"9", "", false},
    {"9", "a", true},
    {"9a", "", false},
    {"9a", "a", true},
    {"a.", "", true},
    {"a.a", "", true},
    {"9.a", "", true},
    {"a.9", "", false},
    {"_9a", "", false},
    {"a.a9", "", true},
    {"a.9a", "", false},
    {"a+9a", "", false},
    {"1-.a-b", "", false},
    {"1-2.a_b", "", true},
    {"a.b.c.d.e", "", true},
    {"1.2.3.4.e", "", true},
    {"a.b.c.d.5", "", false},
    {"1.2.3.4.e.", "", true},
    {"a.b.c.d.5.", "", false},
  };

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(compliant_host_cases); ++i) {
    EXPECT_EQ(compliant_host_cases[i].expected_output,
        IsCanonicalizedHostCompliant(compliant_host_cases[i].host,
                                          compliant_host_cases[i].desired_tld));
  }
}

TEST(NetUtilTest, StripWWW) {
  EXPECT_EQ(string16(), StripWWW(string16()));
  EXPECT_EQ(string16(), StripWWW(ASCIIToUTF16("www.")));
  EXPECT_EQ(ASCIIToUTF16("blah"), StripWWW(ASCIIToUTF16("www.blah")));
  EXPECT_EQ(ASCIIToUTF16("blah"), StripWWW(ASCIIToUTF16("blah")));
}

TEST(NetUtilTest, GetSuggestedFilename) {
  const SuggestedFilenameCase test_cases[] = {
    {"http://www.google.com/",
     "Content-disposition: attachment; filename=test.html",
     "",
     L"",
     L"test.html"},
    {"http://www.google.com/",
     "Content-disposition: attachment; filename=\"test.html\"",
     "",
     L"",
     L"test.html"},
    {"http://www.google.com/path/test.html",
     "Content-disposition: attachment",
     "",
     L"",
     L"test.html"},
    {"http://www.google.com/path/test.html",
     "Content-disposition: attachment;",
     "",
     L"",
     L"test.html"},
    {"http://www.google.com/",
     "",
     "",
     L"",
     L"www.google.com"},
    {"http://www.google.com/test.html",
     "",
     "",
     L"",
     L"test.html"},
    // Now that we use googleurl's ExtractFileName, this case falls back
    // to the hostname. If this behavior is not desirable, we'd better
    // change ExtractFileName (in url_parse).
    {"http://www.google.com/path/",
     "",
     "",
     L"",
     L"www.google.com"},
    {"http://www.google.com/path",
     "",
     "",
     L"",
     L"path"},
    {"file:///",
     "",
     "",
     L"",
     L"download"},
    {"non-standard-scheme:",
     "",
     "",
     L"",
     L"download"},
    {"http://www.google.com/",
     "Content-disposition: attachment; filename =\"test.html\"",
     "",
     L"download",
     L"test.html"},
    {"http://www.google.com/",
     "",
     "",
     L"download",
     L"download"},
    {"http://www.google.com/",
     "Content-disposition: attachment; filename=\"../test.html\"",
     "",
     L"",
     L"_test.html"},
    {"http://www.google.com/",
     "Content-disposition: attachment; filename=\"..\\test.html\"",
     "",
     L"",
     L"_test.html"},
    {"http://www.google.com/",
     "Content-disposition: attachment; filename=\"..\"",
     "",
     L"download",
     L"download"},
    {"http://www.google.com/test.html",
     "Content-disposition: attachment; filename=\"..\"",
     "",
     L"download",
     L"test.html"},
    // Below is a small subset of cases taken from GetFileNameFromCD test above.
    {"http://www.google.com/",
     "Content-Disposition: attachment; filename=\"%EC%98%88%EC%88%A0%20"
     "%EC%98%88%EC%88%A0.jpg\"",
     "",
     L"",
     L"\uc608\uc220 \uc608\uc220.jpg"},
    {"http://www.google.com/%EC%98%88%EC%88%A0%20%EC%98%88%EC%88%A0.jpg",
     "",
     "",
     L"download",
     L"\uc608\uc220 \uc608\uc220.jpg"},
    {"http://www.google.com/",
     "Content-disposition: attachment;",
     "",
     L"\uB2E4\uC6B4\uB85C\uB4DC",
     L"\uB2E4\uC6B4\uB85C\uB4DC"},
    {"http://www.google.com/",
     "Content-Disposition: attachment; filename=\"=?EUC-JP?Q?=B7=DD=BD="
     "D13=2Epng?=\"",
     "",
     L"download",
     L"\u82b8\u88533.png"},
    {"http://www.example.com/images?id=3",
     "Content-Disposition: attachment; filename=caf\xc3\xa9.png",
     "iso-8859-1",
     L"",
     L"caf\u00e9.png"},
    {"http://www.example.com/images?id=3",
     "Content-Disposition: attachment; filename=caf\xe5.png",
     "windows-1253",
     L"",
     L"caf\u03b5.png"},
    {"http://www.example.com/file?id=3",
     "Content-Disposition: attachment; name=\xcf\xc2\xd4\xd8.zip",
     "GBK",
     L"",
     L"\u4e0b\u8f7d.zip"},
    // Invalid C-D header. Extracts filename from url.
    {"http://www.google.com/test.html",
     "Content-Disposition: attachment; filename==?iiso88591?Q?caf=EG?=",
     "",
     L"",
     L"test.html"},
    // about: and data: URLs
    {"about:chrome",
     "",
     "",
     L"",
     L"download"},
    {"data:,looks/like/a.path",
     "",
     "",
     L"",
     L"download"},
    {"data:text/plain;base64,VG8gYmUgb3Igbm90IHRvIGJlLg=",
     "",
     "",
     L"",
     L"download"},
    {"data:,looks/like/a.path",
     "",
     "",
     L"default_filename_is_given",
     L"default_filename_is_given"},
    {"data:,looks/like/a.path",
     "",
     "",
     L"\u65e5\u672c\u8a9e",  // Japanese Kanji.
     L"\u65e5\u672c\u8a9e"},
    // Dotfiles. Ensures preceeding period(s) stripped.
    {"http://www.google.com/.test.html",
    "",
    "",
    L"",
    L"test.html"},
    {"http://www.google.com/.test",
    "",
    "",
    L"",
    L"test"},
    {"http://www.google.com/..test",
    "",
    "",
    L"",
    L"test"},
    // The filename encoding is specified by the referrer charset.
    {"http://example.com/V%FDvojov%E1%20psychologie.doc",
     "",
     "iso-8859-1",
     L"",
     L"V\u00fdvojov\u00e1 psychologie.doc"},
    // The filename encoding doesn't match the referrer charset, the
    // system charset, or UTF-8.
    // TODO(jshin): we need to handle this case.
#if 0
    {"http://example.com/V%FDvojov%E1%20psychologie.doc",
     "",
     "utf-8",
     L"",
     L"V\u00fdvojov\u00e1 psychologie.doc",
    },
#endif
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(test_cases); ++i) {
    std::wstring default_name = test_cases[i].default_filename;
    string16 filename = GetSuggestedFilename(
        GURL(test_cases[i].url), test_cases[i].content_disp_header,
        test_cases[i].referrer_charset, WideToUTF16(default_name));
    EXPECT_EQ(std::wstring(test_cases[i].expected_filename),
              UTF16ToWide(filename))
      << "Iteration " << i << ": " << test_cases[i].url;
  }
}

// This is currently a windows specific function.
#if defined(OS_WIN)
namespace {

struct GetDirectoryListingEntryCase {
  const wchar_t* name;
  const char* raw_bytes;
  bool is_dir;
  int64 filesize;
  base::Time time;
  const char* expected;
};

}  // namespace
TEST(NetUtilTest, GetDirectoryListingEntry) {
  const GetDirectoryListingEntryCase test_cases[] = {
    {L"Foo",
     "",
     false,
     10000,
     base::Time(),
     "<script>addRow(\"Foo\",\"Foo\",0,\"9.8 kB\",\"\");</script>\n"},
    {L"quo\"tes",
     "",
     false,
     10000,
     base::Time(),
     "<script>addRow(\"quo\\\"tes\",\"quo%22tes\",0,\"9.8 kB\",\"\");</script>"
         "\n"},
    {L"quo\"tes",
     "quo\"tes",
     false,
     10000,
     base::Time(),
     "<script>addRow(\"quo\\\"tes\",\"quo%22tes\",0,\"9.8 kB\",\"\");</script>"
         "\n"},
    // U+D55C0 U+AE00. raw_bytes is empty (either a local file with
    // UTF-8/UTF-16 encoding or a remote file on an ftp server using UTF-8
    {L"\xD55C\xAE00.txt",
     "",
     false,
     10000,
     base::Time(),
     "<script>addRow(\"\\uD55C\\uAE00.txt\",\"%ED%95%9C%EA%B8%80.txt\""
         ",0,\"9.8 kB\",\"\");</script>\n"},
    // U+D55C0 U+AE00. raw_bytes is the corresponding EUC-KR sequence:
    // a local or remote file in EUC-KR.
    {L"\xD55C\xAE00.txt",
     "\xC7\xD1\xB1\xDB.txt",
     false,
     10000,
     base::Time(),
     "<script>addRow(\"\\uD55C\\uAE00.txt\",\"%C7%D1%B1%DB.txt\""
         ",0,\"9.8 kB\",\"\");</script>\n"},
  };

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(test_cases); ++i) {
    const std::string results = GetDirectoryListingEntry(
        WideToUTF16(test_cases[i].name),
        test_cases[i].raw_bytes,
        test_cases[i].is_dir,
        test_cases[i].filesize,
        test_cases[i].time);
    EXPECT_EQ(test_cases[i].expected, results);
  }
}

#endif

TEST(NetUtilTest, ParseHostAndPort) {
  const struct {
    const char* input;
    bool success;
    const char* expected_host;
    int expected_port;
  } tests[] = {
    // Valid inputs:
    {"foo:10", true, "foo", 10},
    {"foo", true, "foo", -1},
    {
      "[1080:0:0:0:8:800:200C:4171]:11",
      true,
      "[1080:0:0:0:8:800:200C:4171]",
      11,
    },
    // Invalid inputs:
    {"foo:bar", false, "", -1},
    {"foo:", false, "", -1},
    {":", false, "", -1},
    {":80", false, "", -1},
    {"", false, "", -1},
    {"porttoolong:300000", false, "", -1},
    {"usrname@host", false, "", -1},
    {"usrname:password@host", false, "", -1},
    {":password@host", false, "", -1},
    {":password@host:80", false, "", -1},
    {":password@host", false, "", -1},
    {"@host", false, "", -1},
  };

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) {
    std::string host;
    int port;
    bool ok = ParseHostAndPort(tests[i].input, &host, &port);

    EXPECT_EQ(tests[i].success, ok);

    if (tests[i].success) {
      EXPECT_EQ(tests[i].expected_host, host);
      EXPECT_EQ(tests[i].expected_port, port);
    }
  }
}

TEST(NetUtilTest, GetHostAndPort) {
  const struct {
    GURL url;
    const char* expected_host_and_port;
  } tests[] = {
    { GURL("http://www.foo.com/x"), "www.foo.com:80"},
    { GURL("http://www.foo.com:21/x"), "www.foo.com:21"},

    // For IPv6 literals should always include the brackets.
    { GURL("http://[1::2]/x"), "[1::2]:80"},
    { GURL("http://[::a]:33/x"), "[::a]:33"},
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) {
    std::string host_and_port = GetHostAndPort(tests[i].url);
    EXPECT_EQ(std::string(tests[i].expected_host_and_port), host_and_port);
  }
}

TEST(NetUtilTest, GetHostAndOptionalPort) {
  const struct {
    GURL url;
    const char* expected_host_and_port;
  } tests[] = {
    { GURL("http://www.foo.com/x"), "www.foo.com"},
    { GURL("http://www.foo.com:21/x"), "www.foo.com:21"},

    // For IPv6 literals should always include the brackets.
    { GURL("http://[1::2]/x"), "[1::2]"},
    { GURL("http://[::a]:33/x"), "[::a]:33"},
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) {
    std::string host_and_port = GetHostAndOptionalPort(tests[i].url);
    EXPECT_EQ(std::string(tests[i].expected_host_and_port), host_and_port);
  }
}


TEST(NetUtilTest, NetAddressToString_IPv4) {
  const struct {
    uint8 addr[4];
    const char* result;
  } tests[] = {
    {{0, 0, 0, 0}, "0.0.0.0"},
    {{127, 0, 0, 1}, "127.0.0.1"},
    {{192, 168, 0, 1}, "192.168.0.1"},
  };

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) {
    const addrinfo* ai = GetIPv4Address(tests[i].addr, 80);
    std::string result = NetAddressToString(ai);
    EXPECT_EQ(std::string(tests[i].result), result);
  }
}

TEST(NetUtilTest, NetAddressToString_IPv6) {
  const struct {
    uint8 addr[16];
    const char* result;
  } tests[] = {
    {{0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10, 0xFE, 0xDC, 0xBA,
      0x98, 0x76, 0x54, 0x32, 0x10},
     "fedc:ba98:7654:3210:fedc:ba98:7654:3210"},
  };

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) {
    const addrinfo* ai = GetIPv6Address(tests[i].addr, 80);
    std::string result = NetAddressToString(ai);
    // Allow NetAddressToString() to fail, in case the system doesn't
    // support IPv6.
    if (!result.empty())
      EXPECT_EQ(std::string(tests[i].result), result);
  }
}

TEST(NetUtilTest, NetAddressToStringWithPort_IPv4) {
  uint8 addr[] = {127, 0, 0, 1};
  const addrinfo* ai = GetIPv4Address(addr, 166);
  std::string result = NetAddressToStringWithPort(ai);
  EXPECT_EQ("127.0.0.1:166", result);
}

TEST(NetUtilTest, NetAddressToStringWithPort_IPv6) {
  uint8 addr[] = {
      0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10, 0xFE, 0xDC, 0xBA,
      0x98, 0x76, 0x54, 0x32, 0x10
  };
  const addrinfo* ai = GetIPv6Address(addr, 361);
  std::string result = NetAddressToStringWithPort(ai);

  // May fail on systems that don't support IPv6.
  if (!result.empty())
    EXPECT_EQ("[fedc:ba98:7654:3210:fedc:ba98:7654:3210]:361", result);
}

TEST(NetUtilTest, GetHostName) {
  // We can't check the result of GetHostName() directly, since the result
  // will differ across machines. Our goal here is to simply exercise the
  // code path, and check that things "look about right".
  std::string hostname = GetHostName();
  EXPECT_FALSE(hostname.empty());
}

TEST(NetUtilTest, FormatUrl) {
  FormatUrlTypes default_format_type = kFormatUrlOmitUsernamePassword;
  const UrlTestData tests[] = {
    {"Empty URL", "", "", default_format_type, UnescapeRule::NORMAL, L"", 0},

    {"Simple URL",
     "http://www.google.com/", "", default_format_type, UnescapeRule::NORMAL,
     L"http://www.google.com/", 7},

    {"With a port number and a reference",
     "http://www.google.com:8080/#\xE3\x82\xB0", "", default_format_type,
     UnescapeRule::NORMAL,
     L"http://www.google.com:8080/#\x30B0", 7},

    // -------- IDN tests --------
    {"Japanese IDN with ja",
     "http://xn--l8jvb1ey91xtjb.jp", "ja", default_format_type,
     UnescapeRule::NORMAL, L"http://\x671d\x65e5\x3042\x3055\x3072.jp/", 7},

    {"Japanese IDN with en",
     "http://xn--l8jvb1ey91xtjb.jp", "en", default_format_type,
     UnescapeRule::NORMAL, L"http://xn--l8jvb1ey91xtjb.jp/", 7},

    {"Japanese IDN without any languages",
     "http://xn--l8jvb1ey91xtjb.jp", "", default_format_type,
     UnescapeRule::NORMAL,
     // Single script is safe for empty languages.
     L"http://\x671d\x65e5\x3042\x3055\x3072.jp/", 7},

    {"mailto: with Japanese IDN",
     "mailto:foo@xn--l8jvb1ey91xtjb.jp", "ja", default_format_type,
     UnescapeRule::NORMAL,
     // GURL doesn't assume an email address's domain part as a host name.
     L"mailto:foo@xn--l8jvb1ey91xtjb.jp", 7},

    {"file: with Japanese IDN",
     "file://xn--l8jvb1ey91xtjb.jp/config.sys", "ja", default_format_type,
     UnescapeRule::NORMAL,
     L"file://\x671d\x65e5\x3042\x3055\x3072.jp/config.sys", 7},

    {"ftp: with Japanese IDN",
     "ftp://xn--l8jvb1ey91xtjb.jp/config.sys", "ja", default_format_type,
     UnescapeRule::NORMAL,
     L"ftp://\x671d\x65e5\x3042\x3055\x3072.jp/config.sys", 6},

    // -------- omit_username_password flag tests --------
    {"With username and password, omit_username_password=false",
     "http://user:passwd@example.com/foo", "",
     kFormatUrlOmitNothing, UnescapeRule::NORMAL,
     L"http://user:passwd@example.com/foo", 19},

    {"With username and password, omit_username_password=true",
     "http://user:passwd@example.com/foo", "", default_format_type,
     UnescapeRule::NORMAL, L"http://example.com/foo", 7},

    {"With username and no password",
     "http://user@example.com/foo", "", default_format_type,
     UnescapeRule::NORMAL, L"http://example.com/foo", 7},

    {"Just '@' without username and password",
     "http://@example.com/foo", "", default_format_type, UnescapeRule::NORMAL,
     L"http://example.com/foo", 7},

    // GURL doesn't think local-part of an email address is username for URL.
    {"mailto:, omit_username_password=true",
     "mailto:foo@example.com", "", default_format_type, UnescapeRule::NORMAL,
     L"mailto:foo@example.com", 7},

    // -------- unescape flag tests --------
    {"Do not unescape",
     "http://%E3%82%B0%E3%83%BC%E3%82%B0%E3%83%AB.jp/"
     "%E3%82%B0%E3%83%BC%E3%82%B0%E3%83%AB"
     "?q=%E3%82%B0%E3%83%BC%E3%82%B0%E3%83%AB", "en", default_format_type,
     UnescapeRule::NONE,
     // GURL parses %-encoded hostnames into Punycode.
     L"http://xn--qcka1pmc.jp/%E3%82%B0%E3%83%BC%E3%82%B0%E3%83%AB"
     L"?q=%E3%82%B0%E3%83%BC%E3%82%B0%E3%83%AB", 7},

    {"Unescape normally",
     "http://%E3%82%B0%E3%83%BC%E3%82%B0%E3%83%AB.jp/"
     "%E3%82%B0%E3%83%BC%E3%82%B0%E3%83%AB"
     "?q=%E3%82%B0%E3%83%BC%E3%82%B0%E3%83%AB", "en", default_format_type,
     UnescapeRule::NORMAL,
     L"http://xn--qcka1pmc.jp/\x30B0\x30FC\x30B0\x30EB"
     L"?q=\x30B0\x30FC\x30B0\x30EB", 7},

    {"Unescape normally including unescape spaces",
     "http://www.google.com/search?q=Hello%20World", "en", default_format_type,
     UnescapeRule::SPACES, L"http://www.google.com/search?q=Hello World", 7},

    /*
    {"unescape=true with some special characters",
    "http://user%3A:%40passwd@example.com/foo%3Fbar?q=b%26z", "",
    kFormatUrlOmitNothing, UnescapeRule::NORMAL,
    L"http://user%3A:%40passwd@example.com/foo%3Fbar?q=b%26z", 25},
    */
    // Disabled: the resultant URL becomes "...user%253A:%2540passwd...".

    // -------- omit http: --------
    {"omit http with user name",
     "http://user@example.com/foo", "", kFormatUrlOmitAll,
     UnescapeRule::NORMAL, L"example.com/foo", 0},

    {"omit http",
     "http://www.google.com/", "en", kFormatUrlOmitHTTP,
     UnescapeRule::NORMAL, L"www.google.com/",
     0},

    {"omit http with https",
     "https://www.google.com/", "en", kFormatUrlOmitHTTP,
     UnescapeRule::NORMAL, L"https://www.google.com/",
     8},

    {"omit http starts with ftp.",
     "http://ftp.google.com/", "en", kFormatUrlOmitHTTP,
     UnescapeRule::NORMAL, L"http://ftp.google.com/",
     7},

    // -------- omit trailing slash on bare hostname --------
    {"omit slash when it's the entire path",
     "http://www.google.com/", "en",
     kFormatUrlOmitTrailingSlashOnBareHostname, UnescapeRule::NORMAL,
     L"http://www.google.com", 7},
    {"omit slash when there's a ref",
     "http://www.google.com/#ref", "en",
     kFormatUrlOmitTrailingSlashOnBareHostname, UnescapeRule::NORMAL,
     L"http://www.google.com/#ref", 7},
    {"omit slash when there's a query",
     "http://www.google.com/?", "en",
     kFormatUrlOmitTrailingSlashOnBareHostname, UnescapeRule::NORMAL,
     L"http://www.google.com/?", 7},
    {"omit slash when it's not the entire path",
     "http://www.google.com/foo", "en",
     kFormatUrlOmitTrailingSlashOnBareHostname, UnescapeRule::NORMAL,
     L"http://www.google.com/foo", 7},
    {"omit slash for nonstandard URLs",
     "data:/", "en", kFormatUrlOmitTrailingSlashOnBareHostname,
     UnescapeRule::NORMAL, L"data:/", 5},
    {"omit slash for file URLs",
     "file:///", "en", kFormatUrlOmitTrailingSlashOnBareHostname,
     UnescapeRule::NORMAL, L"file:///", 7},

    // -------- view-source: --------
    {"view-source",
     "view-source:http://xn--qcka1pmc.jp/", "ja", default_format_type,
     UnescapeRule::NORMAL, L"view-source:http://\x30B0\x30FC\x30B0\x30EB.jp/",
     19},

    {"view-source of view-source",
     "view-source:view-source:http://xn--qcka1pmc.jp/", "ja",
     default_format_type, UnescapeRule::NORMAL,
     L"view-source:view-source:http://xn--qcka1pmc.jp/", 12},

    // view-source should omit http and trailing slash where non-view-source
    // would.
    {"view-source omit http",
     "view-source:http://a.b/c", "en", kFormatUrlOmitAll,
     UnescapeRule::NORMAL, L"view-source:a.b/c",
     12},
    {"view-source omit http starts with ftp.",
     "view-source:http://ftp.b/c", "en", kFormatUrlOmitAll,
     UnescapeRule::NORMAL, L"view-source:http://ftp.b/c",
     19},
    {"view-source omit slash when it's the entire path",
     "view-source:http://a.b/", "en", kFormatUrlOmitAll,
     UnescapeRule::NORMAL, L"view-source:a.b",
     12},
  };

  for (size_t i = 0; i < arraysize(tests); ++i) {
    size_t prefix_len;
    string16 formatted = FormatUrl(
        GURL(tests[i].input), tests[i].languages, tests[i].format_types,
        tests[i].escape_rules, NULL, &prefix_len, NULL);
    EXPECT_EQ(WideToUTF16(tests[i].output), formatted) << tests[i].description;
    EXPECT_EQ(tests[i].prefix_len, prefix_len) << tests[i].description;
  }
}

TEST(NetUtilTest, FormatUrlParsed) {
  // No unescape case.
  url_parse::Parsed parsed;
  string16 formatted = FormatUrl(
      GURL("http://\xE3\x82\xB0:\xE3\x83\xBC@xn--qcka1pmc.jp:8080/"
           "%E3%82%B0/?q=%E3%82%B0#\xE3\x82\xB0"),
      "ja", kFormatUrlOmitNothing, UnescapeRule::NONE, &parsed, NULL,
      NULL);
  EXPECT_EQ(WideToUTF16(
      L"http://%E3%82%B0:%E3%83%BC@\x30B0\x30FC\x30B0\x30EB.jp:8080"
      L"/%E3%82%B0/?q=%E3%82%B0#\x30B0"), formatted);
  EXPECT_EQ(WideToUTF16(L"%E3%82%B0"),
      formatted.substr(parsed.username.begin, parsed.username.len));
  EXPECT_EQ(WideToUTF16(L"%E3%83%BC"),
      formatted.substr(parsed.password.begin, parsed.password.len));
  EXPECT_EQ(WideToUTF16(L"\x30B0\x30FC\x30B0\x30EB.jp"),
      formatted.substr(parsed.host.begin, parsed.host.len));
  EXPECT_EQ(WideToUTF16(L"8080"),
      formatted.substr(parsed.port.begin, parsed.port.len));
  EXPECT_EQ(WideToUTF16(L"/%E3%82%B0/"),
      formatted.substr(parsed.path.begin, parsed.path.len));
  EXPECT_EQ(WideToUTF16(L"q=%E3%82%B0"),
      formatted.substr(parsed.query.begin, parsed.query.len));
  EXPECT_EQ(WideToUTF16(L"\x30B0"),
      formatted.substr(parsed.ref.begin, parsed.ref.len));

  // Unescape case.
  formatted = FormatUrl(
      GURL("http://\xE3\x82\xB0:\xE3\x83\xBC@xn--qcka1pmc.jp:8080/"
           "%E3%82%B0/?q=%E3%82%B0#\xE3\x82\xB0"),
      "ja", kFormatUrlOmitNothing, UnescapeRule::NORMAL, &parsed, NULL,
      NULL);
  EXPECT_EQ(WideToUTF16(L"http://\x30B0:\x30FC@\x30B0\x30FC\x30B0\x30EB.jp:8080"
      L"/\x30B0/?q=\x30B0#\x30B0"), formatted);
  EXPECT_EQ(WideToUTF16(L"\x30B0"),
      formatted.substr(parsed.username.begin, parsed.username.len));
  EXPECT_EQ(WideToUTF16(L"\x30FC"),
      formatted.substr(parsed.password.begin, parsed.password.len));
  EXPECT_EQ(WideToUTF16(L"\x30B0\x30FC\x30B0\x30EB.jp"),
      formatted.substr(parsed.host.begin, parsed.host.len));
  EXPECT_EQ(WideToUTF16(L"8080"),
      formatted.substr(parsed.port.begin, parsed.port.len));
  EXPECT_EQ(WideToUTF16(L"/\x30B0/"),
      formatted.substr(parsed.path.begin, parsed.path.len));
  EXPECT_EQ(WideToUTF16(L"q=\x30B0"),
      formatted.substr(parsed.query.begin, parsed.query.len));
  EXPECT_EQ(WideToUTF16(L"\x30B0"),
      formatted.substr(parsed.ref.begin, parsed.ref.len));

  // Omit_username_password + unescape case.
  formatted = FormatUrl(
      GURL("http://\xE3\x82\xB0:\xE3\x83\xBC@xn--qcka1pmc.jp:8080/"
           "%E3%82%B0/?q=%E3%82%B0#\xE3\x82\xB0"),
      "ja", kFormatUrlOmitUsernamePassword, UnescapeRule::NORMAL, &parsed,
      NULL, NULL);
  EXPECT_EQ(WideToUTF16(L"http://\x30B0\x30FC\x30B0\x30EB.jp:8080"
      L"/\x30B0/?q=\x30B0#\x30B0"), formatted);
  EXPECT_FALSE(parsed.username.is_valid());
  EXPECT_FALSE(parsed.password.is_valid());
  EXPECT_EQ(WideToUTF16(L"\x30B0\x30FC\x30B0\x30EB.jp"),
      formatted.substr(parsed.host.begin, parsed.host.len));
  EXPECT_EQ(WideToUTF16(L"8080"),
      formatted.substr(parsed.port.begin, parsed.port.len));
  EXPECT_EQ(WideToUTF16(L"/\x30B0/"),
      formatted.substr(parsed.path.begin, parsed.path.len));
  EXPECT_EQ(WideToUTF16(L"q=\x30B0"),
      formatted.substr(parsed.query.begin, parsed.query.len));
  EXPECT_EQ(WideToUTF16(L"\x30B0"),
      formatted.substr(parsed.ref.begin, parsed.ref.len));

  // View-source case.
  formatted = FormatUrl(
      GURL("view-source:http://user:passwd@host:81/path?query#ref"),
      "", kFormatUrlOmitUsernamePassword, UnescapeRule::NORMAL, &parsed,
      NULL, NULL);
  EXPECT_EQ(WideToUTF16(L"view-source:http://host:81/path?query#ref"),
      formatted);
  EXPECT_EQ(WideToUTF16(L"view-source:http"),
      formatted.substr(parsed.scheme.begin, parsed.scheme.len));
  EXPECT_FALSE(parsed.username.is_valid());
  EXPECT_FALSE(parsed.password.is_valid());
  EXPECT_EQ(WideToUTF16(L"host"),
      formatted.substr(parsed.host.begin, parsed.host.len));
  EXPECT_EQ(WideToUTF16(L"81"),
      formatted.substr(parsed.port.begin, parsed.port.len));
  EXPECT_EQ(WideToUTF16(L"/path"),
      formatted.substr(parsed.path.begin, parsed.path.len));
  EXPECT_EQ(WideToUTF16(L"query"),
      formatted.substr(parsed.query.begin, parsed.query.len));
  EXPECT_EQ(WideToUTF16(L"ref"),
      formatted.substr(parsed.ref.begin, parsed.ref.len));

  // omit http case.
  formatted = FormatUrl(
      GURL("http://host:8000/a?b=c#d"),
      "", kFormatUrlOmitHTTP, UnescapeRule::NORMAL, &parsed, NULL, NULL);
  EXPECT_EQ(WideToUTF16(L"host:8000/a?b=c#d"), formatted);
  EXPECT_FALSE(parsed.scheme.is_valid());
  EXPECT_FALSE(parsed.username.is_valid());
  EXPECT_FALSE(parsed.password.is_valid());
  EXPECT_EQ(WideToUTF16(L"host"),
      formatted.substr(parsed.host.begin, parsed.host.len));
  EXPECT_EQ(WideToUTF16(L"8000"),
      formatted.substr(parsed.port.begin, parsed.port.len));
  EXPECT_EQ(WideToUTF16(L"/a"),
      formatted.substr(parsed.path.begin, parsed.path.len));
  EXPECT_EQ(WideToUTF16(L"b=c"),
      formatted.substr(parsed.query.begin, parsed.query.len));
  EXPECT_EQ(WideToUTF16(L"d"),
      formatted.substr(parsed.ref.begin, parsed.ref.len));

  // omit http starts with ftp case.
  formatted = FormatUrl(
      GURL("http://ftp.host:8000/a?b=c#d"),
      "", kFormatUrlOmitHTTP, UnescapeRule::NORMAL, &parsed, NULL, NULL);
  EXPECT_EQ(WideToUTF16(L"http://ftp.host:8000/a?b=c#d"), formatted);
  EXPECT_TRUE(parsed.scheme.is_valid());
  EXPECT_FALSE(parsed.username.is_valid());
  EXPECT_FALSE(parsed.password.is_valid());
  EXPECT_EQ(WideToUTF16(L"http"),
      formatted.substr(parsed.scheme.begin, parsed.scheme.len));
  EXPECT_EQ(WideToUTF16(L"ftp.host"),
      formatted.substr(parsed.host.begin, parsed.host.len));
  EXPECT_EQ(WideToUTF16(L"8000"),
      formatted.substr(parsed.port.begin, parsed.port.len));
  EXPECT_EQ(WideToUTF16(L"/a"),
      formatted.substr(parsed.path.begin, parsed.path.len));
  EXPECT_EQ(WideToUTF16(L"b=c"),
      formatted.substr(parsed.query.begin, parsed.query.len));
  EXPECT_EQ(WideToUTF16(L"d"),
      formatted.substr(parsed.ref.begin, parsed.ref.len));

  // omit http starts with 'f' case.
  formatted = FormatUrl(
      GURL("http://f/"),
      "", kFormatUrlOmitHTTP, UnescapeRule::NORMAL, &parsed, NULL, NULL);
  EXPECT_EQ(WideToUTF16(L"f/"), formatted);
  EXPECT_FALSE(parsed.scheme.is_valid());
  EXPECT_FALSE(parsed.username.is_valid());
  EXPECT_FALSE(parsed.password.is_valid());
  EXPECT_FALSE(parsed.port.is_valid());
  EXPECT_TRUE(parsed.path.is_valid());
  EXPECT_FALSE(parsed.query.is_valid());
  EXPECT_FALSE(parsed.ref.is_valid());
  EXPECT_EQ(WideToUTF16(L"f"),
      formatted.substr(parsed.host.begin, parsed.host.len));
  EXPECT_EQ(WideToUTF16(L"/"),
      formatted.substr(parsed.path.begin, parsed.path.len));
}

TEST(NetUtilTest, FormatUrlAdjustOffset) {
  const AdjustOffsetCase basic_cases[] = {
    {0, 0},
    {3, 3},
    {5, 5},
    {6, 6},
    {13, 13},
    {21, 21},
    {22, 22},
    {23, 23},
    {25, 25},
    {26, string16::npos},
    {500000, string16::npos},
    {string16::npos, string16::npos},
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(basic_cases); ++i) {
    size_t offset = basic_cases[i].input_offset;
    FormatUrl(GURL("http://www.google.com/foo/"), "en",
                   kFormatUrlOmitUsernamePassword, UnescapeRule::NORMAL,
                   NULL, NULL, &offset);
    EXPECT_EQ(basic_cases[i].output_offset, offset);
  }

  size_t url_size = 26;
  std::vector<size_t> offsets;
  for (size_t i = 0; i < url_size + 1; ++i)
    offsets.push_back(i);
  FormatUrlWithOffsets(GURL("http://www.google.com/foo/"), "en",
                       kFormatUrlOmitUsernamePassword, UnescapeRule::NORMAL,
                       NULL, NULL, &offsets);
  for (size_t i = 0; i < url_size; ++i)
    EXPECT_EQ(i, offsets[i]);
  EXPECT_EQ(kNpos, offsets[url_size]);

  const struct {
    const char* input_url;
    size_t input_offset;
    size_t output_offset;
  } omit_auth_cases[] = {
    {"http://foo:bar@www.google.com/", 6, 6},
    {"http://foo:bar@www.google.com/", 7, string16::npos},
    {"http://foo:bar@www.google.com/", 8, string16::npos},
    {"http://foo:bar@www.google.com/", 10, string16::npos},
    {"http://foo:bar@www.google.com/", 11, string16::npos},
    {"http://foo:bar@www.google.com/", 14, string16::npos},
    {"http://foo:bar@www.google.com/", 15, 7},
    {"http://foo:bar@www.google.com/", 25, 17},
    {"http://foo@www.google.com/", 9, string16::npos},
    {"http://foo@www.google.com/", 11, 7},
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(omit_auth_cases); ++i) {
    size_t offset = omit_auth_cases[i].input_offset;
    FormatUrl(GURL(omit_auth_cases[i].input_url), "en",
                   kFormatUrlOmitUsernamePassword, UnescapeRule::NORMAL,
                   NULL, NULL, &offset);
    EXPECT_EQ(omit_auth_cases[i].output_offset, offset);
  }

  url_size = 30;
  offsets.clear();
  for (size_t i = 0; i < url_size; ++i)
    offsets.push_back(i);
  FormatUrlWithOffsets(GURL("http://foo:bar@www.google.com/"), "en",
                       kFormatUrlOmitUsernamePassword, UnescapeRule::NORMAL,
                       NULL, NULL, &offsets);
  for (size_t i = 0; i < 7; ++i)
    EXPECT_EQ(i, offsets[i]);
  for (size_t i = 7; i < 15; ++i)
    EXPECT_EQ(kNpos, offsets[i]);
  for (size_t i = 16; i < url_size; ++i)
    EXPECT_EQ(i - 8 , offsets[i]);

  const AdjustOffsetCase view_source_cases[] = {
    {0, 0},
    {3, 3},
    {11, 11},
    {12, 12},
    {13, 13},
    {18, 18},
    {19, string16::npos},
    {20, string16::npos},
    {23, 19},
    {26, 22},
    {string16::npos, string16::npos},
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(view_source_cases); ++i) {
    size_t offset = view_source_cases[i].input_offset;
    FormatUrl(GURL("view-source:http://foo@www.google.com/"), "en",
                   kFormatUrlOmitUsernamePassword, UnescapeRule::NORMAL,
                   NULL, NULL, &offset);
    EXPECT_EQ(view_source_cases[i].output_offset, offset);
  }

  url_size = 38;
  offsets.clear();
  for (size_t i = 0; i < url_size; ++i)
    offsets.push_back(i);
  FormatUrlWithOffsets(GURL("view-source:http://foo@www.google.com/"), "en",
                       kFormatUrlOmitUsernamePassword, UnescapeRule::NORMAL,
                       NULL, NULL, &offsets);
  size_t expected[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
                       17, 18, kNpos, kNpos, kNpos, kNpos, 19, 20, 21, 22, 23,
                       24, 25, 26, 27, 28, 29, 30, 31, 32, 33};
  ASSERT_EQ(url_size, arraysize(expected));
  for (size_t i = 0; i < url_size; ++i)
    EXPECT_EQ(expected[i], offsets[i]);

  const AdjustOffsetCase idn_hostname_cases[] = {
    {8, string16::npos},
    {16, string16::npos},
    {24, string16::npos},
    {25, 12},
    {30, 17},
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(idn_hostname_cases); ++i) {
    size_t offset = idn_hostname_cases[i].input_offset;
    // "http://\x671d\x65e5\x3042\x3055\x3072.jp/foo/"
    FormatUrl(GURL("http://xn--l8jvb1ey91xtjb.jp/foo/"), "ja",
                   kFormatUrlOmitUsernamePassword, UnescapeRule::NORMAL,
                   NULL, NULL, &offset);
    EXPECT_EQ(idn_hostname_cases[i].output_offset, offset);
  }

  url_size = 33;
  offsets.clear();
  for (size_t i = 0; i < url_size; ++i)
    offsets.push_back(i);
  FormatUrlWithOffsets(GURL("http://xn--l8jvb1ey91xtjb.jp/foo/"), "ja",
                       kFormatUrlOmitUsernamePassword, UnescapeRule::NORMAL,
                       NULL, NULL, &offsets);
  size_t expected_1[] = {0, 1, 2, 3, 4, 5, 6, 7, kNpos, kNpos, kNpos, kNpos,
                         kNpos, kNpos, kNpos, kNpos, kNpos, kNpos, kNpos, kNpos,
                         kNpos, kNpos, kNpos, kNpos, kNpos, 12, 13, 14, 15, 16,
                         17, 18, 19};
  ASSERT_EQ(url_size, arraysize(expected_1));
  for (size_t i = 0; i < url_size; ++i)
    EXPECT_EQ(expected_1[i], offsets[i]);

  const AdjustOffsetCase unescape_cases[] = {
    {25, 25},
    {26, string16::npos},
    {27, string16::npos},
    {28, 26},
    {35, string16::npos},
    {41, 31},
    {59, 33},
    {60, string16::npos},
    {67, string16::npos},
    {68, string16::npos},
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(unescape_cases); ++i) {
    size_t offset = unescape_cases[i].input_offset;
    // "http://www.google.com/foo bar/\x30B0\x30FC\x30B0\x30EB"
    FormatUrl(GURL(
        "http://www.google.com/foo%20bar/%E3%82%B0%E3%83%BC%E3%82%B0%E3%83%AB"),
        "en", kFormatUrlOmitUsernamePassword, UnescapeRule::SPACES, NULL,
        NULL, &offset);
    EXPECT_EQ(unescape_cases[i].output_offset, offset);
  }

  url_size = 68;
  offsets.clear();
  for (size_t i = 0; i < url_size; ++i)
    offsets.push_back(i);
  FormatUrlWithOffsets(GURL(
      "http://www.google.com/foo%20bar/%E3%82%B0%E3%83%BC%E3%82%B0%E3%83%AB"),
      "en", kFormatUrlOmitUsernamePassword, UnescapeRule::SPACES, NULL, NULL,
      &offsets);
  size_t expected_2[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
                         16, 17, 18, 19, 20, 21, 22, 23, 24, 25, kNpos, kNpos,
                         26, 27, 28, 29, 30, kNpos, kNpos, kNpos, kNpos, kNpos,
                         kNpos, kNpos, kNpos, 31, kNpos, kNpos, kNpos, kNpos,
                         kNpos, kNpos, kNpos, kNpos, 32, kNpos, kNpos, kNpos,
                         kNpos, kNpos, kNpos, kNpos, kNpos, 33, kNpos, kNpos,
                         kNpos, kNpos, kNpos, kNpos, kNpos, kNpos};
  ASSERT_EQ(url_size, arraysize(expected_2));
  for (size_t i = 0; i < url_size; ++i)
    EXPECT_EQ(expected_2[i], offsets[i]);

  const AdjustOffsetCase ref_cases[] = {
    {30, 30},
    {31, 31},
    {32, string16::npos},
    {34, 32},
    {35, string16::npos},
    {37, 33},
    {38, string16::npos},
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(ref_cases); ++i) {
    size_t offset = ref_cases[i].input_offset;
    // "http://www.google.com/foo.html#\x30B0\x30B0z"
    FormatUrl(GURL(
        "http://www.google.com/foo.html#\xE3\x82\xB0\xE3\x82\xB0z"), "en",
        kFormatUrlOmitUsernamePassword, UnescapeRule::NORMAL, NULL, NULL,
        &offset);
    EXPECT_EQ(ref_cases[i].output_offset, offset);
  }

  url_size = 38;
  offsets.clear();
  for (size_t i = 0; i < url_size; ++i)
    offsets.push_back(i);
  // "http://www.google.com/foo.html#\x30B0\x30B0z"
  FormatUrlWithOffsets(GURL(
      "http://www.google.com/foo.html#\xE3\x82\xB0\xE3\x82\xB0z"), "en",
      kFormatUrlOmitUsernamePassword, UnescapeRule::NORMAL, NULL, NULL,
      &offsets);
  size_t expected_3[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
                         16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
                         30, 31, kNpos, kNpos, 32, kNpos, kNpos, 33};
  ASSERT_EQ(url_size, arraysize(expected_3));
  for (size_t i = 0; i < url_size; ++i)
    EXPECT_EQ(expected_3[i], offsets[i]);

  const AdjustOffsetCase omit_http_cases[] = {
    {0, string16::npos},
    {3, string16::npos},
    {7, 0},
    {8, 1},
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(omit_http_cases); ++i) {
    size_t offset = omit_http_cases[i].input_offset;
    FormatUrl(GURL("http://www.google.com"), "en",
        kFormatUrlOmitHTTP, UnescapeRule::NORMAL, NULL, NULL, &offset);
    EXPECT_EQ(omit_http_cases[i].output_offset, offset);
  }

  url_size = 23;
  offsets.clear();
  for (size_t i = 0; i < url_size; ++i)
    offsets.push_back(i);
  FormatUrlWithOffsets(GURL("http://www.google.com"), "en",
      kFormatUrlOmitHTTP, UnescapeRule::NORMAL, NULL, NULL, &offsets);
  size_t expected_4[] = {kNpos, kNpos, kNpos, kNpos, kNpos, kNpos, kNpos, 0, 1,
                         2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, kNpos};
  ASSERT_EQ(url_size, arraysize(expected_4));
  for (size_t i = 0; i < url_size; ++i)
    EXPECT_EQ(expected_4[i], offsets[i]);

  const AdjustOffsetCase omit_http_start_with_ftp[] = {
    {0, 0},
    {3, 3},
    {8, 8},
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(omit_http_start_with_ftp); ++i) {
    size_t offset = omit_http_start_with_ftp[i].input_offset;
    FormatUrl(GURL("http://ftp.google.com"), "en",
        kFormatUrlOmitHTTP, UnescapeRule::NORMAL, NULL, NULL, &offset);
    EXPECT_EQ(omit_http_start_with_ftp[i].output_offset, offset);
  }

  url_size = 23;
  offsets.clear();
  for (size_t i = 0; i < url_size; ++i)
    offsets.push_back(i);
  FormatUrlWithOffsets(GURL("http://ftp.google.com"), "en",
      kFormatUrlOmitHTTP, UnescapeRule::NORMAL, NULL, NULL, &offsets);
  size_t expected_5[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
                         16, 17, 18, 19, 20, 21, kNpos};
  ASSERT_EQ(url_size, arraysize(expected_5));
  for (size_t i = 0; i < url_size; ++i)
    EXPECT_EQ(expected_5[i], offsets[i]);

  const AdjustOffsetCase omit_all_cases[] = {
    {12, 0},
    {13, 1},
    {0, string16::npos},
    {3, string16::npos},
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(omit_all_cases); ++i) {
    size_t offset = omit_all_cases[i].input_offset;
    FormatUrl(GURL("http://user@foo.com/"), "en", kFormatUrlOmitAll,
                   UnescapeRule::NORMAL, NULL, NULL, &offset);
    EXPECT_EQ(omit_all_cases[i].output_offset, offset);
  }

  url_size = 21;
  offsets.clear();
  for (size_t i = 0; i < url_size; ++i)
    offsets.push_back(i);
  FormatUrlWithOffsets(GURL("http://user@foo.com/"), "en", kFormatUrlOmitAll,
                       UnescapeRule::NORMAL, NULL, NULL, &offsets);
  size_t expected_6[] = {kNpos, kNpos, kNpos, kNpos, kNpos, kNpos, kNpos, kNpos,
                         kNpos, kNpos, kNpos, kNpos, 0, 1, 2, 3, 4, 5, 6, 7,
                         kNpos};
  ASSERT_EQ(url_size, arraysize(expected_6));
  for (size_t i = 0; i < url_size; ++i)
    EXPECT_EQ(expected_6[i], offsets[i]);
}

TEST(NetUtilTest, SimplifyUrlForRequest) {
  struct {
    const char* input_url;
    const char* expected_simplified_url;
  } tests[] = {
    {
      // Reference section should be stripped.
      "http://www.google.com:78/foobar?query=1#hash",
      "http://www.google.com:78/foobar?query=1",
    },
    {
      // Reference section can itself contain #.
      "http://192.168.0.1?query=1#hash#10#11#13#14",
      "http://192.168.0.1?query=1",
    },
    { // Strip username/password.
      "http://user:pass@google.com",
      "http://google.com/",
    },
    { // Strip both the reference and the username/password.
      "http://user:pass@google.com:80/sup?yo#X#X",
      "http://google.com/sup?yo",
    },
    { // Try an HTTPS URL -- strip both the reference and the username/password.
      "https://user:pass@google.com:80/sup?yo#X#X",
      "https://google.com:80/sup?yo",
    },
    { // Try an FTP URL -- strip both the reference and the username/password.
      "ftp://user:pass@google.com:80/sup?yo#X#X",
      "ftp://google.com:80/sup?yo",
    },
    { // Try an nonstandard URL
      "foobar://user:pass@google.com:80/sup?yo#X#X",
      "foobar://user:pass@google.com:80/sup?yo#X#X",
    },
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) {
    SCOPED_TRACE(base::StringPrintf("Test[%" PRIuS "]: %s", i,
                                    tests[i].input_url));
    GURL input_url(GURL(tests[i].input_url));
    GURL expected_url(GURL(tests[i].expected_simplified_url));
    EXPECT_EQ(expected_url, SimplifyUrlForRequest(input_url));
  }
}

TEST(NetUtilTest, SetExplicitlyAllowedPortsTest) {
  std::string invalid[] = { "1,2,a", "'1','2'", "1, 2, 3", "1 0,11,12" };
  std::string valid[] = { "", "1", "1,2", "1,2,3", "10,11,12,13" };

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(invalid); ++i) {
    SetExplicitlyAllowedPorts(invalid[i]);
    EXPECT_EQ(0, static_cast<int>(explicitly_allowed_ports.size()));
  }

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(valid); ++i) {
    SetExplicitlyAllowedPorts(valid[i]);
    EXPECT_EQ(i, explicitly_allowed_ports.size());
  }
}

TEST(NetUtilTest, GetHostOrSpecFromURL) {
  EXPECT_EQ("example.com",
            GetHostOrSpecFromURL(GURL("http://example.com/test")));
  EXPECT_EQ("example.com",
            GetHostOrSpecFromURL(GURL("http://example.com./test")));
  EXPECT_EQ("file:///tmp/test.html",
            GetHostOrSpecFromURL(GURL("file:///tmp/test.html")));
}

// Test that invalid IP literals fail to parse.
TEST(NetUtilTest, ParseIPLiteralToNumber_FailParse) {
  IPAddressNumber number;

  EXPECT_FALSE(ParseIPLiteralToNumber("bad value", &number));
  EXPECT_FALSE(ParseIPLiteralToNumber("bad:value", &number));
  EXPECT_FALSE(ParseIPLiteralToNumber("", &number));
  EXPECT_FALSE(ParseIPLiteralToNumber("192.168.0.1:30", &number));
  EXPECT_FALSE(ParseIPLiteralToNumber("  192.168.0.1  ", &number));
  EXPECT_FALSE(ParseIPLiteralToNumber("[::1]", &number));
}

// Test parsing an IPv4 literal.
TEST(NetUtilTest, ParseIPLiteralToNumber_IPv4) {
  IPAddressNumber number;
  EXPECT_TRUE(ParseIPLiteralToNumber("192.168.0.1", &number));
  EXPECT_EQ("192,168,0,1", DumpIPNumber(number));
}

// Test parsing an IPv6 literal.
TEST(NetUtilTest, ParseIPLiteralToNumber_IPv6) {
  IPAddressNumber number;
  EXPECT_TRUE(ParseIPLiteralToNumber("1:abcd::3:4:ff", &number));
  EXPECT_EQ("0,1,171,205,0,0,0,0,0,0,0,3,0,4,0,255", DumpIPNumber(number));
}

// Test mapping an IPv4 address to an IPv6 address.
TEST(NetUtilTest, ConvertIPv4NumberToIPv6Number) {
  IPAddressNumber ipv4_number;
  EXPECT_TRUE(ParseIPLiteralToNumber("192.168.0.1", &ipv4_number));

  IPAddressNumber ipv6_number =
      ConvertIPv4NumberToIPv6Number(ipv4_number);

  // ::ffff:192.168.1.1
  EXPECT_EQ("0,0,0,0,0,0,0,0,0,0,255,255,192,168,0,1",
            DumpIPNumber(ipv6_number));
}

// Test parsing invalid CIDR notation literals.
TEST(NetUtilTest, ParseCIDRBlock_Invalid) {
  const char* bad_literals[] = {
      "foobar",
      "",
      "192.168.0.1",
      "::1",
      "/",
      "/1",
      "1",
      "192.168.1.1/-1",
      "192.168.1.1/33",
      "::1/-3",
      "a::3/129",
      "::1/x",
      "192.168.0.1//11"
  };

  for (size_t i = 0; i < arraysize(bad_literals); ++i) {
    IPAddressNumber ip_number;
    size_t prefix_length_in_bits;

    EXPECT_FALSE(ParseCIDRBlock(bad_literals[i],
                                     &ip_number,
                                     &prefix_length_in_bits));
  }
}

// Test parsing a valid CIDR notation literal.
TEST(NetUtilTest, ParseCIDRBlock_Valid) {
  IPAddressNumber ip_number;
  size_t prefix_length_in_bits;

  EXPECT_TRUE(ParseCIDRBlock("192.168.0.1/11",
                                  &ip_number,
                                  &prefix_length_in_bits));

  EXPECT_EQ("192,168,0,1", DumpIPNumber(ip_number));
  EXPECT_EQ(11u, prefix_length_in_bits);
}

TEST(NetUtilTest, IPNumberMatchesPrefix) {
  struct {
    const char* cidr_literal;
    const char* ip_literal;
    bool expected_to_match;
  } tests[] = {
    // IPv4 prefix with IPv4 inputs.
    {
      "10.10.1.32/27",
      "10.10.1.44",
      true
    },
    {
      "10.10.1.32/27",
      "10.10.1.90",
      false
    },
    {
      "10.10.1.32/27",
      "10.10.1.90",
      false
    },

    // IPv6 prefix with IPv6 inputs.
    {
      "2001:db8::/32",
      "2001:DB8:3:4::5",
      true
    },
    {
      "2001:db8::/32",
      "2001:c8::",
      false
    },

    // IPv6 prefix with IPv4 inputs.
    {
      "2001:db8::/33",
      "192.168.0.1",
      false
    },
    {
      "::ffff:192.168.0.1/112",
      "192.168.33.77",
      true
    },

    // IPv4 prefix with IPv6 inputs.
    {
      "10.11.33.44/16",
      "::ffff:0a0b:89",
      true
    },
    {
      "10.11.33.44/16",
      "::ffff:10.12.33.44",
      false
    },
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) {
    SCOPED_TRACE(base::StringPrintf("Test[%" PRIuS "]: %s, %s", i,
                                    tests[i].cidr_literal,
                                    tests[i].ip_literal));

    IPAddressNumber ip_number;
    EXPECT_TRUE(ParseIPLiteralToNumber(tests[i].ip_literal, &ip_number));

    IPAddressNumber ip_prefix;
    size_t prefix_length_in_bits;

    EXPECT_TRUE(ParseCIDRBlock(tests[i].cidr_literal,
                               &ip_prefix,
                               &prefix_length_in_bits));

    EXPECT_EQ(tests[i].expected_to_match,
              IPNumberMatchesPrefix(ip_number,
                                    ip_prefix,
                                    prefix_length_in_bits));
  }
}

TEST(NetUtilTest, IsLocalhost) {
  EXPECT_TRUE(net::IsLocalhost("localhost"));
  EXPECT_TRUE(net::IsLocalhost("localhost.localdomain"));
  EXPECT_TRUE(net::IsLocalhost("localhost6"));
  EXPECT_TRUE(net::IsLocalhost("localhost6.localdomain6"));
  EXPECT_TRUE(net::IsLocalhost("127.0.0.1"));
  EXPECT_TRUE(net::IsLocalhost("127.0.1.0"));
  EXPECT_TRUE(net::IsLocalhost("127.1.0.0"));
  EXPECT_TRUE(net::IsLocalhost("127.0.0.255"));
  EXPECT_TRUE(net::IsLocalhost("127.0.255.0"));
  EXPECT_TRUE(net::IsLocalhost("127.255.0.0"));
  EXPECT_TRUE(net::IsLocalhost("::1"));
  EXPECT_TRUE(net::IsLocalhost("0:0:0:0:0:0:0:1"));

  EXPECT_FALSE(net::IsLocalhost("localhostx"));
  EXPECT_FALSE(net::IsLocalhost("foo.localdomain"));
  EXPECT_FALSE(net::IsLocalhost("localhost6x"));
  EXPECT_FALSE(net::IsLocalhost("localhost.localdomain6"));
  EXPECT_FALSE(net::IsLocalhost("localhost6.localdomain"));
  EXPECT_FALSE(net::IsLocalhost("127.0.0.1.1"));
  EXPECT_FALSE(net::IsLocalhost(".127.0.0.255"));
  EXPECT_FALSE(net::IsLocalhost("::2"));
  EXPECT_FALSE(net::IsLocalhost("::1:1"));
  EXPECT_FALSE(net::IsLocalhost("0:0:0:0:1:0:0:1"));
  EXPECT_FALSE(net::IsLocalhost("::1:1"));
  EXPECT_FALSE(net::IsLocalhost("0:0:0:0:0:0:0:0:1"));
}

// Verify GetNetworkList().
TEST(NetUtilTest, GetNetworkList) {
  NetworkInterfaceList list;
  ASSERT_TRUE(GetNetworkList(&list));

  for (NetworkInterfaceList::iterator it = list.begin();
       it != list.end(); ++it) {
    // Verify that the name is not empty.
    EXPECT_FALSE(it->name.empty());

    // Verify that the address is correct.
    EXPECT_TRUE(it->address.size() == kIPv4AddressSize ||
                it->address.size() == kIPv6AddressSize)
        << "Invalid address of size " << it->address.size();
    bool all_zeroes = true;
    for (size_t i = 0; i < it->address.size(); ++i) {
      if (it->address[i] != 0) {
        all_zeroes = false;
        break;
      }
    }
    EXPECT_FALSE(all_zeroes);
  }
}

TEST(NetUtilTest, AdjustComponentOffset) {
  std::vector<size_t> old_offsets;
  for (size_t i = 0; i < 10; ++i)
    old_offsets.push_back(i);
  std::vector<size_t> new_offsets;
  std::transform(old_offsets.begin(),
                 old_offsets.end(),
                 std::back_inserter(new_offsets),
                 ClampComponentOffset(5));
  size_t expected_1[] = {kNpos, kNpos, kNpos, kNpos, kNpos, 5, 6, 7, 8, 9};
  EXPECT_EQ(new_offsets.size(), arraysize(expected_1));
  EXPECT_EQ(new_offsets.size(), old_offsets.size());
  for (size_t i = 0; i < arraysize(expected_1); ++i)
    EXPECT_EQ(expected_1[i], new_offsets[i]);
}

}  // namespace net