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
10
11// <set>
12
13// class multiset
14
15// template <class... Args>
16// iterator emplace_hint(const_iterator position, Args&&... args);
17
18#include <set>
19#include <cassert>
20
21#include "test_macros.h"
22#include "../../Emplaceable.h"
23#include "DefaultOnly.h"
24#include "min_allocator.h"
25
26int main(int, char**)
27{
28 {
29 typedef std::multiset<DefaultOnly> M;
30 typedef M::iterator R;
31 M m;
32 assert(DefaultOnly::count == 0);
33 R r = m.emplace_hint(m.cend());
34 assert(r == m.begin());
35 assert(m.size() == 1);
36 assert(*m.begin() == DefaultOnly());
37 assert(DefaultOnly::count == 1);
38
39 r = m.emplace_hint(m.cbegin());
40 assert(r == m.begin());
41 assert(m.size() == 2);
42 assert(*m.begin() == DefaultOnly());
43 assert(DefaultOnly::count == 2);
44 }
45 assert(DefaultOnly::count == 0);
46 {
47 typedef std::multiset<Emplaceable> M;
48 typedef M::iterator R;
49 M m;
50 R r = m.emplace_hint(m.cend());
51 assert(r == m.begin());
52 assert(m.size() == 1);
53 assert(*m.begin() == Emplaceable());
54 r = m.emplace_hint(m.cend(), 2, 3.5);
55 assert(r == std::next(m.begin()));
56 assert(m.size() == 2);
57 assert(*r == Emplaceable(2, 3.5));
58 r = m.emplace_hint(m.cbegin(), 2, 3.5);
59 assert(r == std::next(m.begin()));
60 assert(m.size() == 3);
61 assert(*r == Emplaceable(2, 3.5));
62 }
63 {
64 typedef std::multiset<int> M;
65 typedef M::iterator R;
66 M m;
67 R r = m.emplace_hint(pos: m.cend(), args: M::value_type(2));
68 assert(r == m.begin());
69 assert(m.size() == 1);
70 assert(*r == 2);
71 }
72 {
73 typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
74 typedef M::iterator R;
75 M m;
76 R r = m.emplace_hint(m.cend(), M::value_type(2));
77 assert(r == m.begin());
78 assert(m.size() == 1);
79 assert(*r == 2);
80 }
81
82 return 0;
83}
84

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