Move //courgette/third_party to subfolder.

courgette/third_party/qsufsort_unittest.cc

-// Copyright 2015 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 "courgette/third_party/qsufsort.h"
-
-#include <stddef.h>
-
-#include <algorithm>
-#include <cstring>
-#include <string>
-#include <vector>
-
-#include "base/macros.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-TEST(QSufSortTest, Sort) {
-  const char* test_cases[] = {
-    "",
-    "a",
-    "za",
-    "CACAO",
-    "banana",
-    "tobeornottobe",
-    "The quick brown fox jumps over the lazy dog.",
-    "elephantelephantelephantelephantelephant",
-    "-------------------------",
-    "011010011001011010010110011010010",
-    "3141592653589793238462643383279502884197169399375105",
-    "\xFF\xFE\xFF\xFE\xFD\x80\x30\x31\x32\x80\x30\xFF\x01\xAB\xCD",
-  };
-
-  for (size_t idx = 0; idx < arraysize(test_cases); ++idx) {
-    int len = static_cast<int>(::strlen(test_cases[idx]));
-    const unsigned char* s =
-        reinterpret_cast<const unsigned char*>(test_cases[idx]);
-
-    // Generate the suffix array as I.
-    std::vector<int> I(len + 1);
-    std::vector<int> V(len + 1);
-    courgette::qsuf::qsufsort<int*>(&I[0], &V[0], s, len);
-
-    // Expect that I[] is a permutation of [0, len].
-    std::vector<int> I_sorted(I);
-    std::sort(I_sorted.begin(), I_sorted.end());
-    for (int i = 0; i < len + 1; ++i) {
-      EXPECT_EQ(i, I_sorted[i]) << "test_case[" << idx << "]";
-    }
-
-    // First string must be empty string.
-    EXPECT_EQ(len, I[0]) << "test_case[" << idx << "]";
-
-    // Expect that the |len + 1| suffixes are strictly ordered.
-    const unsigned char* end = s + len;
-    for (int i = 0; i < len; ++i) {
-      const unsigned char* suf1 = s + I[i];
-      const unsigned char* suf2 = s + I[i + 1];
-      bool is_less = std::lexicographical_compare(suf1, end, suf2, end);
-      EXPECT_TRUE(is_less) << "test_case[" << idx << "]";
-    }
-  }
-}
-
-TEST(QSufSortTest, Search) {
-  // Initialize main string and the suffix array.
-  // Positions:          00000000001111111111122222222233333333334444
-  //                     01234567890123456789012345678901234567890123
-  const char* old_str = "the quick brown fox jumps over the lazy dog.";
-  int old_size = static_cast<int>(::strlen(old_str));
-  const unsigned char* old_buf =
-        reinterpret_cast<const unsigned char*>(old_str);
-  std::vector<int> I(old_size + 1);
-  std::vector<int> V(old_size + 1);
-  courgette::qsuf::qsufsort<int*>(&I[0], &V[0], old_buf, old_size);
-
-  // Test queries.
-  const struct {
-    int exp_pos;  // -1 means "don't care".
-    int exp_match_len;
-    const char* query_str;
-  } test_cases[] = {
-    // Entire string.
-    {0, 44, "the quick brown fox jumps over the lazy dog."},
-    // Empty string.
-    {-1, 0, ""},  // Current algorithm does not enforce |pos| == 0.
-    // Exact and unique suffix match.
-    {43, 1, "."},
-    {31, 13, "the lazy dog."},
-    // Exact and unique non-suffix match.
-    {4, 5, "quick"},
-    {0, 9, "the quick"},  // Unique prefix.
-    // Entire word match with mutiple results: take lexicographical first.
-    {31, 3, "the"},  // Non-unique prefix: "the l"... < "the q"...
-    {9, 1, " "},  // " brown"... wins.
-    // Partial and unique match of query prefix.
-    {16, 10, "fox jumps with the hosps"},
-    // Partial and multiple match of query prefix: no guarantees on |pos|.
-    // Take lexicographical first for matching portion *only*, so same results:
-    {-1, 4, "the apple"},  // query      < "the l"... < "the q"...
-    {-1, 4, "the opera"},  // "the l"... < query      < "the q"...
-    {-1, 4, "the zebra"},  // "the l"... < "the q"... < query
-    // Prefix match dominates suffix match.
-    {26, 5, "over quick brown fox"},
-    // No match.
-    {-1, 0, ","},
-    {-1, 0, "1234"},
-    {-1, 0, "THE QUICK BROWN FOX"},
-    {-1, 0, "(the"},
-  };
-
-  for (size_t idx = 0; idx < arraysize(test_cases); ++idx) {
-    const auto& test_case = test_cases[idx];
-    int new_size = static_cast<int>(::strlen(test_case.query_str));
-    const unsigned char* new_buf =
-        reinterpret_cast<const unsigned char*>(test_case.query_str);
-
-    // Perform the search.
-    int pos = 0;
-    int match_len = courgette::qsuf::search(
-        &I[0], old_buf, old_size, new_buf, new_size, &pos);
-
-    // Check basic properties and match with expected values.
-    EXPECT_GE(match_len, 0) << "test_case[" << idx << "]";
-    EXPECT_LE(match_len, new_size) << "test_case[" << idx << "]";
-    if (match_len > 0) {
-      EXPECT_GE(pos, 0) << "test_case[" << idx << "]";
-      EXPECT_LE(pos, old_size - match_len) << "test_case[" << idx << "]";
-      EXPECT_EQ(0, ::memcmp(old_buf + pos, new_buf, match_len))
-          << "test_case[" << idx << "]";
-    }
-    if (test_case.exp_pos >= 0) {
-      EXPECT_EQ(test_case.exp_pos, pos) << "test_case[" << idx << "]";
-    }
-    EXPECT_EQ(test_case.exp_match_len, match_len) << "test_case[" << idx << "]";
-  }
-}