1// Copyright 2009 the V8 project authors. All rights reserved.
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3// modification, are permitted provided that the following conditions are
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27
28#include <stdlib.h>
29#include <string.h>
30#include "v8.h"
31#include "cctest.h"
32
33using namespace v8::internal;
34
35// Use a testing allocator that clears memory before deletion.
36class ZeroingAllocationPolicy {
37 public:
38  static void* New(size_t size) {
39    // Stash the size in the first word to use for Delete.
40    size_t true_size = size + sizeof(size_t);
41    size_t* result = reinterpret_cast<size_t*>(malloc(true_size));
42    if (result == NULL) return result;
43    *result = true_size;
44    return result + 1;
45  }
46
47  static void Delete(void* ptr) {
48    size_t* true_ptr = reinterpret_cast<size_t*>(ptr) - 1;
49    memset(true_ptr, 0, *true_ptr);
50    free(true_ptr);
51  }
52};
53
54// Check that we can add (a reference to) an element of the list
55// itself.
56TEST(ListAdd) {
57  // Add elements to the list to grow it to its capacity.
58  List<int, ZeroingAllocationPolicy> list(4);
59  list.Add(1);
60  list.Add(2);
61  list.Add(3);
62  list.Add(4);
63
64  // Add an existing element, the backing store should have to grow.
65  list.Add(list[0]);
66  CHECK_EQ(1, list[4]);
67}
68
69// Test that we can add all elements from a list to another list.
70TEST(ListAddAll) {
71  List<int, ZeroingAllocationPolicy> list(4);
72  list.Add(0);
73  list.Add(1);
74  list.Add(2);
75
76  CHECK_EQ(3, list.length());
77  for (int i = 0; i < 3; i++) {
78    CHECK_EQ(i, list[i]);
79  }
80
81  List<int, ZeroingAllocationPolicy> other_list(4);
82
83  // Add no elements to list since other_list is empty.
84  list.AddAll(other_list);
85  CHECK_EQ(3, list.length());
86  for (int i = 0; i < 3; i++) {
87    CHECK_EQ(i, list[i]);
88  }
89
90  // Add three elements to other_list.
91  other_list.Add(0);
92  other_list.Add(1);
93  other_list.Add(2);
94
95  // Copy the three elements from other_list to list.
96  list.AddAll(other_list);
97  CHECK_EQ(6, list.length());
98  for (int i = 0; i < 6; i++) {
99    CHECK_EQ(i % 3, list[i]);
100  }
101}
102