1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <deque>
11
12// void push_front(const value_type& v);
13
14#include <deque>
15#include <cassert>
16#include <cstddef>
17
18#include "min_allocator.h"
19
20template <class C>
21C
22make(int size, int start = 0 )
23{
24    const int b = 4096 / sizeof(int);
25    int init = 0;
26    if (start > 0)
27    {
28        init = (start+1) / b + ((start+1) % b != 0);
29        init *= b;
30        --init;
31    }
32    C c(init, 0);
33    for (int i = 0; i < init-start; ++i)
34        c.pop_back();
35    for (int i = 0; i < size; ++i)
36        c.push_back(i);
37    for (int i = 0; i < start; ++i)
38        c.pop_front();
39    return c;
40}
41
42template <class C>
43void
44test(C& c1, int x)
45{
46    typedef typename C::iterator I;
47    std::size_t c1_osize = c1.size();
48    c1.push_front(x);
49    assert(c1.size() == c1_osize + 1);
50    assert(static_cast<std::size_t>(distance(c1.begin(), c1.end())) == c1.size());
51    I i = c1.begin();
52    assert(*i == x);
53    ++i;
54    for (int j = 0; static_cast<std::size_t>(j) < c1_osize; ++j, ++i)
55        assert(*i == j);
56}
57
58template <class C>
59void
60testN(int start, int N)
61{
62    C c1 = make<C>(N, start);
63    test(c1, -10);
64}
65
66int main()
67{
68    {
69    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
70    const int N = sizeof(rng)/sizeof(rng[0]);
71    for (int i = 0; i < N; ++i)
72        for (int j = 0; j < N; ++j)
73            testN<std::deque<int> >(rng[i], rng[j]);
74    }
75#if TEST_STD_VER >= 11
76   {
77    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
78    const int N = sizeof(rng)/sizeof(rng[0]);
79    for (int i = 0; i < N; ++i)
80        for (int j = 0; j < N; ++j)
81            testN<std::deque<int, min_allocator<int>> >(rng[i], rng[j]);
82    }
83#endif
84}
85