test-list.cc 4.56 KB
Newer Older
1
// Copyright 2011 the V8 project authors. All rights reserved.
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
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
//       disclaimer in the documentation and/or other materials provided
//       with the distribution.
//     * Neither the name of Google Inc. nor the names of its
//       contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include <stdlib.h>
#include <string.h>
30 31
#include "src/list-inl.h"
#include "src/list.h"
32 33
#include "src/v8.h"
#include "test/cctest/cctest.h"
34 35 36 37 38 39

using namespace v8::internal;

// Use a testing allocator that clears memory before deletion.
class ZeroingAllocationPolicy {
 public:
40
  void* New(size_t size) {
41 42 43 44 45 46 47 48 49 50 51 52 53 54 55
    // Stash the size in the first word to use for Delete.
    size_t true_size = size + sizeof(size_t);
    size_t* result = reinterpret_cast<size_t*>(malloc(true_size));
    if (result == NULL) return result;
    *result = true_size;
    return result + 1;
  }

  static void Delete(void* ptr) {
    size_t* true_ptr = reinterpret_cast<size_t*>(ptr) - 1;
    memset(true_ptr, 0, *true_ptr);
    free(true_ptr);
  }
};

56

57 58 59 60 61 62 63 64 65 66 67 68
// Check that we can add (a reference to) an element of the list
// itself.
TEST(ListAdd) {
  // Add elements to the list to grow it to its capacity.
  List<int, ZeroingAllocationPolicy> list(4);
  list.Add(1);
  list.Add(2);
  list.Add(3);
  list.Add(4);

  // Add an existing element, the backing store should have to grow.
  list.Add(list[0]);
69
  CHECK_EQ(1, list[4]);
70
}
71

72

73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105
// Test that we can add all elements from a list to another list.
TEST(ListAddAll) {
  List<int, ZeroingAllocationPolicy> list(4);
  list.Add(0);
  list.Add(1);
  list.Add(2);

  CHECK_EQ(3, list.length());
  for (int i = 0; i < 3; i++) {
    CHECK_EQ(i, list[i]);
  }

  List<int, ZeroingAllocationPolicy> other_list(4);

  // Add no elements to list since other_list is empty.
  list.AddAll(other_list);
  CHECK_EQ(3, list.length());
  for (int i = 0; i < 3; i++) {
    CHECK_EQ(i, list[i]);
  }

  // Add three elements to other_list.
  other_list.Add(0);
  other_list.Add(1);
  other_list.Add(2);

  // Copy the three elements from other_list to list.
  list.AddAll(other_list);
  CHECK_EQ(6, list.length());
  for (int i = 0; i < 6; i++) {
    CHECK_EQ(i % 3, list[i]);
  }
}
106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136


TEST(RemoveLast) {
  List<int> list(4);
  CHECK_EQ(0, list.length());
  list.Add(1);
  CHECK_EQ(1, list.length());
  CHECK_EQ(1, list.last());
  list.RemoveLast();
  CHECK_EQ(0, list.length());
  list.Add(2);
  list.Add(3);
  CHECK_EQ(2, list.length());
  CHECK_EQ(3, list.last());
  list.RemoveLast();
  CHECK_EQ(1, list.length());
  CHECK_EQ(2, list.last());
  list.RemoveLast();
  CHECK_EQ(0, list.length());

  const int kElements = 100;
  for (int i = 0; i < kElements; i++) list.Add(i);
  for (int j = kElements - 1; j >= 0; j--) {
    CHECK_EQ(j + 1, list.length());
    CHECK_EQ(j, list.last());
    list.RemoveLast();
    CHECK_EQ(j, list.length());
  }
}


137 138 139 140 141 142 143 144 145 146 147 148
TEST(Allocate) {
  List<int> list(4);
  list.Add(1);
  CHECK_EQ(1, list.length());
  list.Allocate(100);
  CHECK_EQ(100, list.length());
  CHECK_LE(100, list.capacity());
  list[99] = 123;
  CHECK_EQ(123, list[99]);
}


149 150 151 152 153 154 155 156
TEST(Clear) {
  List<int> list(4);
  CHECK_EQ(0, list.length());
  for (int i = 0; i < 4; ++i) list.Add(i);
  CHECK_EQ(4, list.length());
  list.Clear();
  CHECK_EQ(0, list.length());
}
157 158 159 160 161 162 163 164 165 166 167


TEST(DeleteEmpty) {
  {
    List<int>* list = new List<int>(0);
    delete list;
  }
  {
    List<int> list(0);
  }
}