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// <map>
12
13// class multimap
14
15// node_type extract(const_iterator);
16
17#include <map>
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 auto some_key = c.cbegin()->first;
27
28 for (auto first = c.cbegin(); first != c.cend();) {
29 auto key_value = first->first;
30 typename Container::node_type t = c.extract(first++);
31 --sz;
32 assert(t.key() == key_value);
33 t.key() = some_key;
34 assert(t.key() == some_key);
35 assert(t.get_allocator() == c.get_allocator());
36 assert(sz == c.size());
37 }
38
39 assert(c.size() == 0);
40}
41
42int main(int, char**) {
43 {
44 using map_type = std::multimap<int, int>;
45 map_type m = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};
46 test(c&: m);
47 }
48
49 {
50 std::multimap<Counter<int>, Counter<int>> m = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};
51 assert(Counter_base::gConstructed == 12);
52 test(m);
53 assert(Counter_base::gConstructed == 0);
54 }
55
56 {
57 using min_alloc_map = std::multimap<int, int, std::less<int>, min_allocator<std::pair<const int, int>>>;
58 min_alloc_map m = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};
59 test(m);
60 }
61
62 return 0;
63}
64

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