llvm-project

1
//===----------------------------------------------------------------------===//
2
//
3
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4
// See https://llvm.org/LICENSE.txt for license information.
5
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6
//
7
//===----------------------------------------------------------------------===//
8

9
// UNSUPPORTED: c++03, c++11, c++14
10

11
// <set>
12

13
// class set
14

15
// node_type extract(const_iterator);
16

17
#include <set>
18
#include "test_macros.h"
19
#include "min_allocator.h"
20
#include "Counter.h"
21

22
template <class Container>
23
void test(Container& c)
24
{
25
    std::size_t sz = c.size();
26

27
    for (auto first = c.cbegin(); first != c.cend();)
28
    {
29
        auto key_value = *first;
30
        typename Container::node_type t = c.extract(first++);
31
        --sz;
32
        assert(t.value() == key_value);
33
        assert(t.get_allocator() == c.get_allocator());
34
        assert(sz == c.size());
35
    }
36

37
    assert(c.size() == 0);
38
}
39

40
int main(int, char**)
41
{
42
    {
43
        using set_type = std::set<int>;
44
        set_type m = {1, 2, 3, 4, 5, 6};
45
        test(m);
46
    }
47

48
    {
49
        std::set<Counter<int>> m = {1, 2, 3, 4, 5, 6};
50
        assert(Counter_base::gConstructed == 6);
51
        test(m);
52
        assert(Counter_base::gConstructed == 0);
53
    }
54

55
    {
56
        using min_alloc_set = std::set<int, std::less<int>, min_allocator<int>>;
57
        min_alloc_set m = {1, 2, 3, 4, 5, 6};
58
        test(m);
59
    }
60

61
  return 0;
62
}
63