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// <set>
10
11// class multiset
12
13// size_type size() const;
14
15#include <set>
16#include <cassert>
17
18#include "test_macros.h"
19#include "min_allocator.h"
20
21int main(int, char**)
22{
23 {
24 typedef std::multiset<int> M;
25 M m;
26 assert(m.size() == 0);
27 m.insert(x: M::value_type(2));
28 assert(m.size() == 1);
29 m.insert(x: M::value_type(1));
30 assert(m.size() == 2);
31 m.insert(x: M::value_type(2));
32 assert(m.size() == 3);
33 m.erase(position: m.begin());
34 assert(m.size() == 2);
35 m.erase(position: m.begin());
36 assert(m.size() == 1);
37 m.erase(position: m.begin());
38 assert(m.size() == 0);
39 }
40#if TEST_STD_VER >= 11
41 {
42 typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
43 M m;
44 assert(m.size() == 0);
45 m.insert(M::value_type(2));
46 assert(m.size() == 1);
47 m.insert(M::value_type(1));
48 assert(m.size() == 2);
49 m.insert(M::value_type(2));
50 assert(m.size() == 3);
51 m.erase(m.begin());
52 assert(m.size() == 2);
53 m.erase(m.begin());
54 assert(m.size() == 1);
55 m.erase(m.begin());
56 assert(m.size() == 0);
57 }
58#endif
59
60 return 0;
61}
62

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