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 multiset
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
22template <class Container>
23void test(Container& c) {
24 std::size_t sz = c.size();
25
26 for (auto first = c.cbegin(); first != c.cend();) {
27 auto key_value = *first;
28 typename Container::node_type t = c.extract(first++);
29 --sz;
30 assert(t.value() == key_value);
31 assert(t.get_allocator() == c.get_allocator());
32 assert(sz == c.size());
33 }
34
35 assert(c.size() == 0);
36}
37
38int main(int, char**) {
39 {
40 using set_type = std::multiset<int>;
41 set_type m = {1, 2, 3, 4, 5, 6};
42 test(c&: m);
43 }
44
45 {
46 std::multiset<Counter<int>> m = {1, 2, 3, 4, 5, 6};
47 assert(Counter_base::gConstructed == 6);
48 test(m);
49 assert(Counter_base::gConstructed == 0);
50 }
51
52 {
53 using min_alloc_set = std::multiset<int, std::less<int>, min_allocator<int>>;
54 min_alloc_set m = {1, 2, 3, 4, 5, 6};
55 test(m);
56 }
57
58 return 0;
59}
60

source code of libcxx/test/std/containers/associative/multiset/extract_iterator.pass.cpp