llvm-project
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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{
24typedef std::multiset<int> M;
25M m;
26assert(m.size() == 0);
27m.insert(M::value_type(2));
28assert(m.size() == 1);
29m.insert(M::value_type(1));
30assert(m.size() == 2);
31m.insert(M::value_type(2));
32assert(m.size() == 3);
33m.erase(m.begin());
34assert(m.size() == 2);
35m.erase(m.begin());
36assert(m.size() == 1);
37m.erase(m.begin());
38assert(m.size() == 0);
39}
40#if TEST_STD_VER >= 11
41{
42typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
43M m;
44assert(m.size() == 0);
45m.insert(M::value_type(2));
46assert(m.size() == 1);
47m.insert(M::value_type(1));
48assert(m.size() == 2);
49m.insert(M::value_type(2));
50assert(m.size() == 3);
51m.erase(m.begin());
52assert(m.size() == 2);
53m.erase(m.begin());
54assert(m.size() == 1);
55m.erase(m.begin());
56assert(m.size() == 0);
57}
58#endif
59
60return 0;
61}
62