Move base to DEPS

base/strings/utf_offset_string_conversions_unittest.cc

-// 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 <algorithm>
-
-#include "base/logging.h"
-#include "base/strings/string_piece.h"
-#include "base/strings/utf_offset_string_conversions.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace base {
-
-namespace {
-
-static const size_t kNpos = string16::npos;
-
-}  // namespace
-
-TEST(UTFOffsetStringConversionsTest, AdjustOffset) {
-  struct UTF8ToUTF16Case {
-    const char* utf8;
-    size_t input_offset;
-    size_t output_offset;
-  } utf8_to_utf16_cases[] = {
-    {"", 0, 0},
-    {"", kNpos, kNpos},
-    {"\xe4\xbd\xa0\xe5\xa5\xbd", 1, kNpos},
-    {"\xe4\xbd\xa0\xe5\xa5\xbd", 3, 1},
-    {"\xed\xb0\x80z", 3, 1},
-    {"A\xF0\x90\x8C\x80z", 1, 1},
-    {"A\xF0\x90\x8C\x80z", 2, kNpos},
-    {"A\xF0\x90\x8C\x80z", 5, 3},
-    {"A\xF0\x90\x8C\x80z", 6, 4},
-    {"A\xF0\x90\x8C\x80z", kNpos, kNpos},
-  };
-  for (size_t i = 0; i < arraysize(utf8_to_utf16_cases); ++i) {
-    const size_t offset = utf8_to_utf16_cases[i].input_offset;
-    std::vector<size_t> offsets;
-    offsets.push_back(offset);
-    UTF8ToUTF16AndAdjustOffsets(utf8_to_utf16_cases[i].utf8, &offsets);
-    EXPECT_EQ(utf8_to_utf16_cases[i].output_offset, offsets[0]);
-  }
-
-  struct UTF16ToUTF8Case {
-    char16 utf16[10];
-    size_t input_offset;
-    size_t output_offset;
-  } utf16_to_utf8_cases[] = {
-      {{}, 0, 0},
-      // Converted to 3-byte utf-8 sequences
-      {{0x5909, 0x63DB}, 3, kNpos},
-      {{0x5909, 0x63DB}, 2, 6},
-      {{0x5909, 0x63DB}, 1, 3},
-      {{0x5909, 0x63DB}, 0, 0},
-      // Converted to 2-byte utf-8 sequences
-      {{'A', 0x00bc, 0x00be, 'z'}, 1, 1},
-      {{'A', 0x00bc, 0x00be, 'z'}, 2, 3},
-      {{'A', 0x00bc, 0x00be, 'z'}, 3, 5},
-      {{'A', 0x00bc, 0x00be, 'z'}, 4, 6},
-      // Surrogate pair
-      {{'A', 0xd800, 0xdf00, 'z'}, 1, 1},
-      {{'A', 0xd800, 0xdf00, 'z'}, 2, kNpos},
-      {{'A', 0xd800, 0xdf00, 'z'}, 3, 5},
-      {{'A', 0xd800, 0xdf00, 'z'}, 4, 6},
-  };
-  for (size_t i = 0; i < arraysize(utf16_to_utf8_cases); ++i) {
-    size_t offset = utf16_to_utf8_cases[i].input_offset;
-    std::vector<size_t> offsets;
-    offsets.push_back(offset);
-    UTF16ToUTF8AndAdjustOffsets(utf16_to_utf8_cases[i].utf16, &offsets);
-    EXPECT_EQ(utf16_to_utf8_cases[i].output_offset, offsets[0]) << i;
-  }
-}
-
-TEST(UTFOffsetStringConversionsTest, LimitOffsets) {
-  const size_t kLimit = 10;
-  const size_t kItems = 20;
-  std::vector<size_t> size_ts;
-  for (size_t t = 0; t < kItems; ++t)
-    size_ts.push_back(t);
-  std::for_each(size_ts.begin(), size_ts.end(),
-                LimitOffset<string16>(kLimit));
-  size_t unlimited_count = 0;
-  for (std::vector<size_t>::iterator ti = size_ts.begin(); ti != size_ts.end();
-       ++ti) {
-    if (*ti != kNpos)
-      ++unlimited_count;
-  }
-  EXPECT_EQ(11U, unlimited_count);
-
-  // Reverse the values in the vector and try again.
-  size_ts.clear();
-  for (size_t t = kItems; t > 0; --t)
-    size_ts.push_back(t - 1);
-  std::for_each(size_ts.begin(), size_ts.end(),
-                LimitOffset<string16>(kLimit));
-  unlimited_count = 0;
-  for (std::vector<size_t>::iterator ti = size_ts.begin(); ti != size_ts.end();
-       ++ti) {
-    if (*ti != kNpos)
-      ++unlimited_count;
-  }
-  EXPECT_EQ(11U, unlimited_count);
-}
-
-TEST(UTFOffsetStringConversionsTest, AdjustOffsets) {
-  // Imagine we have strings as shown in the following cases where the
-  // X's represent encoded characters.
-  // 1: abcXXXdef ==> abcXdef
-  {
-    std::vector<size_t> offsets;
-    for (size_t t = 0; t <= 9; ++t)
-      offsets.push_back(t);
-    OffsetAdjuster::Adjustments adjustments;
-    adjustments.push_back(OffsetAdjuster::Adjustment(3, 3, 1));
-    OffsetAdjuster::AdjustOffsets(adjustments, &offsets);
-    size_t expected_1[] = {0, 1, 2, 3, kNpos, kNpos, 4, 5, 6, 7};
-    EXPECT_EQ(offsets.size(), arraysize(expected_1));
-    for (size_t i = 0; i < arraysize(expected_1); ++i)
-      EXPECT_EQ(expected_1[i], offsets[i]);
-  }
-
-  // 2: XXXaXXXXbcXXXXXXXdefXXX ==> XaXXbcXXXXdefX
-  {
-    std::vector<size_t> offsets;
-    for (size_t t = 0; t <= 23; ++t)
-      offsets.push_back(t);
-    OffsetAdjuster::Adjustments adjustments;
-    adjustments.push_back(OffsetAdjuster::Adjustment(0, 3, 1));
-    adjustments.push_back(OffsetAdjuster::Adjustment(4, 4, 2));
-    adjustments.push_back(OffsetAdjuster::Adjustment(10, 7, 4));
-    adjustments.push_back(OffsetAdjuster::Adjustment(20, 3, 1));
-    OffsetAdjuster::AdjustOffsets(adjustments, &offsets);
-    size_t expected_2[] = {
-      0, kNpos, kNpos, 1, 2, kNpos, kNpos, kNpos, 4, 5, 6, kNpos, kNpos, kNpos,
-      kNpos, kNpos, kNpos, 10, 11, 12, 13, kNpos, kNpos, 14
-    };
-    EXPECT_EQ(offsets.size(), arraysize(expected_2));
-    for (size_t i = 0; i < arraysize(expected_2); ++i)
-      EXPECT_EQ(expected_2[i], offsets[i]);
-  }
-
-  // 3: XXXaXXXXbcdXXXeXX ==> aXXXXbcdXXXe
-  {
-    std::vector<size_t> offsets;
-    for (size_t t = 0; t <= 17; ++t)
-      offsets.push_back(t);
-    OffsetAdjuster::Adjustments adjustments;
-    adjustments.push_back(OffsetAdjuster::Adjustment(0, 3, 0));
-    adjustments.push_back(OffsetAdjuster::Adjustment(4, 4, 4));
-    adjustments.push_back(OffsetAdjuster::Adjustment(11, 3, 3));
-    adjustments.push_back(OffsetAdjuster::Adjustment(15, 2, 0));
-    OffsetAdjuster::AdjustOffsets(adjustments, &offsets);
-    size_t expected_3[] = {
-      0, kNpos, kNpos, 0, 1, kNpos, kNpos, kNpos, 5, 6, 7, 8, kNpos, kNpos, 11,
-      12, kNpos, 12
-    };
-    EXPECT_EQ(offsets.size(), arraysize(expected_3));
-    for (size_t i = 0; i < arraysize(expected_3); ++i)
-      EXPECT_EQ(expected_3[i], offsets[i]);
-  }
-}
-
-TEST(UTFOffsetStringConversionsTest, UnadjustOffsets) {
-  // Imagine we have strings as shown in the following cases where the
-  // X's represent encoded characters.
-  // 1: abcXXXdef ==> abcXdef
-  {
-    std::vector<size_t> offsets;
-    for (size_t t = 0; t <= 7; ++t)
-      offsets.push_back(t);
-    OffsetAdjuster::Adjustments adjustments;
-    adjustments.push_back(OffsetAdjuster::Adjustment(3, 3, 1));
-    OffsetAdjuster::UnadjustOffsets(adjustments, &offsets);
-    size_t expected_1[] = {0, 1, 2, 3, 6, 7, 8, 9};
-    EXPECT_EQ(offsets.size(), arraysize(expected_1));
-    for (size_t i = 0; i < arraysize(expected_1); ++i)
-      EXPECT_EQ(expected_1[i], offsets[i]);
-  }
-
-  // 2: XXXaXXXXbcXXXXXXXdefXXX ==> XaXXbcXXXXdefX
-  {
-    std::vector<size_t> offsets;
-    for (size_t t = 0; t <= 14; ++t)
-      offsets.push_back(t);
-    OffsetAdjuster::Adjustments adjustments;
-    adjustments.push_back(OffsetAdjuster::Adjustment(0, 3, 1));
-    adjustments.push_back(OffsetAdjuster::Adjustment(4, 4, 2));
-    adjustments.push_back(OffsetAdjuster::Adjustment(10, 7, 4));
-    adjustments.push_back(OffsetAdjuster::Adjustment(20, 3, 1));
-    OffsetAdjuster::UnadjustOffsets(adjustments, &offsets);
-    size_t expected_2[] = {
-      0, 3, 4, kNpos, 8, 9, 10, kNpos, kNpos, kNpos, 17, 18, 19, 20, 23
-    };
-    EXPECT_EQ(offsets.size(), arraysize(expected_2));
-    for (size_t i = 0; i < arraysize(expected_2); ++i)
-      EXPECT_EQ(expected_2[i], offsets[i]);
-  }
-
-  // 3: XXXaXXXXbcdXXXeXX ==> aXXXXbcdXXXe
-  {
-    std::vector<size_t> offsets;
-    for (size_t t = 0; t <= 12; ++t)
-      offsets.push_back(t);
-    OffsetAdjuster::Adjustments adjustments;
-    adjustments.push_back(OffsetAdjuster::Adjustment(0, 3, 0));
-    adjustments.push_back(OffsetAdjuster::Adjustment(4, 4, 4));
-    adjustments.push_back(OffsetAdjuster::Adjustment(11, 3, 3));
-    adjustments.push_back(OffsetAdjuster::Adjustment(15, 2, 0));
-    OffsetAdjuster::UnadjustOffsets(adjustments, &offsets);
-    size_t expected_3[] = {
-      0,  // this could just as easily be 3
-      4, kNpos, kNpos, kNpos, 8, 9, 10, 11, kNpos, kNpos, 14,
-      15  // this could just as easily be 17
-    };
-    EXPECT_EQ(offsets.size(), arraysize(expected_3));
-    for (size_t i = 0; i < arraysize(expected_3); ++i)
-      EXPECT_EQ(expected_3[i], offsets[i]);
-  }
-}
-
-// MergeSequentialAdjustments is used by net/base/escape.{h,cc} and
-// net/base/net_util.{h,cc}.  The two tests EscapeTest.AdjustOffset and
-// NetUtilTest.FormatUrlWithOffsets test its behavior extensively.  This
-// is simply a short, additional test.
-TEST(UTFOffsetStringConversionsTest, MergeSequentialAdjustments) {
-  // Pretend the input string is "abcdefghijklmnopqrstuvwxyz".
-
-  // Set up |first_adjustments| to
-  // - remove the leading "a"
-  // - combine the "bc" into one character (call it ".")
-  // - remove the "f"
-  // - remove the "tuv"
-  // The resulting string should be ".deghijklmnopqrswxyz".
-  OffsetAdjuster::Adjustments first_adjustments;
-  first_adjustments.push_back(OffsetAdjuster::Adjustment(0, 1, 0));
-  first_adjustments.push_back(OffsetAdjuster::Adjustment(1, 2, 1));
-  first_adjustments.push_back(OffsetAdjuster::Adjustment(5, 1, 0));
-  first_adjustments.push_back(OffsetAdjuster::Adjustment(19, 3, 0));
-
-  // Set up |adjustments_on_adjusted_string| to
-  // - combine the "." character that replaced "bc" with "d" into one character
-  //   (call it "?")
-  // - remove the "egh"
-  // - expand the "i" into two characters (call them "12")
-  // - combine the "jkl" into one character (call it "@")
-  // - expand the "z" into two characters (call it "34")
-  // The resulting string should be "?12@mnopqrswxy34".
-  OffsetAdjuster::Adjustments adjustments_on_adjusted_string;
-  adjustments_on_adjusted_string.push_back(OffsetAdjuster::Adjustment(
-      0, 2, 1));
-  adjustments_on_adjusted_string.push_back(OffsetAdjuster::Adjustment(
-      2, 3, 0));
-  adjustments_on_adjusted_string.push_back(OffsetAdjuster::Adjustment(
-      5, 1, 2));
-  adjustments_on_adjusted_string.push_back(OffsetAdjuster::Adjustment(
-      6, 3, 1));
-  adjustments_on_adjusted_string.push_back(OffsetAdjuster::Adjustment(
-      19, 1, 2));
-
-  // Now merge the adjustments and check the results.
-  OffsetAdjuster::MergeSequentialAdjustments(first_adjustments,
-                                             &adjustments_on_adjusted_string);
-  // The merged adjustments should look like
-  // - combine abcd into "?"
-  //   - note: it's also reasonable for the Merge function to instead produce
-  //     two adjustments instead of this, one to remove a and another to
-  //     combine bcd into "?".  This test verifies the current behavior.
-  // - remove efgh
-  // - expand i into "12"
-  // - combine jkl into "@"
-  // - remove tuv
-  // - expand z into "34"
-  ASSERT_EQ(6u, adjustments_on_adjusted_string.size());
-  EXPECT_EQ(0u, adjustments_on_adjusted_string[0].original_offset);
-  EXPECT_EQ(4u, adjustments_on_adjusted_string[0].original_length);
-  EXPECT_EQ(1u, adjustments_on_adjusted_string[0].output_length);
-  EXPECT_EQ(4u, adjustments_on_adjusted_string[1].original_offset);
-  EXPECT_EQ(4u, adjustments_on_adjusted_string[1].original_length);
-  EXPECT_EQ(0u, adjustments_on_adjusted_string[1].output_length);
-  EXPECT_EQ(8u, adjustments_on_adjusted_string[2].original_offset);
-  EXPECT_EQ(1u, adjustments_on_adjusted_string[2].original_length);
-  EXPECT_EQ(2u, adjustments_on_adjusted_string[2].output_length);
-  EXPECT_EQ(9u, adjustments_on_adjusted_string[3].original_offset);
-  EXPECT_EQ(3u, adjustments_on_adjusted_string[3].original_length);
-  EXPECT_EQ(1u, adjustments_on_adjusted_string[3].output_length);
-  EXPECT_EQ(19u, adjustments_on_adjusted_string[4].original_offset);
-  EXPECT_EQ(3u, adjustments_on_adjusted_string[4].original_length);
-  EXPECT_EQ(0u, adjustments_on_adjusted_string[4].output_length);
-  EXPECT_EQ(25u, adjustments_on_adjusted_string[5].original_offset);
-  EXPECT_EQ(1u, adjustments_on_adjusted_string[5].original_length);
-  EXPECT_EQ(2u, adjustments_on_adjusted_string[5].output_length);
-}
-
-}  // namespace base