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 // <map>
10 
11 // class multimap
12 
13 // iterator insert(const_iterator position, const value_type& v);
14 
15 #include <map>
16 #include <cassert>
17 
18 #include "test_macros.h"
19 #include "min_allocator.h"
20 
21 template <class Container>
22 void do_insert_hint_test()
23 {
24     typedef Container M;
25     typedef typename M::iterator R;
26     typedef typename M::value_type VT;
27     M m;
28     const VT v1(2, 2.5);
29     R r = m.insert(m.end(), v1);
30     assert(r == m.begin());
31     assert(m.size() == 1);
32     assert(r->first == 2);
33     assert(r->second == 2.5);
34 
35     const VT v2(1, 1.5);
36     r = m.insert(m.end(), v2);
37     assert(r == m.begin());
38     assert(m.size() == 2);
39     assert(r->first == 1);
40     assert(r->second == 1.5);
41 
42     const VT v3(3, 3.5);
43     r = m.insert(m.end(), v3);
44     assert(r == std::prev(m.end()));
45     assert(m.size() == 3);
46     assert(r->first == 3);
47     assert(r->second == 3.5);
48 
49     const VT v4(3, 4.5);
50     r = m.insert(std::prev(m.end()), v4);
51     assert(r == std::prev(m.end(), 2));
52     assert(m.size() == 4);
53     assert(r->first == 3);
54     assert(r->second == 4.5);
55 }
56 
57 int main(int, char**)
58 {
59     do_insert_hint_test<std::multimap<int, double> >();
60 #if TEST_STD_VER >= 11
61     {
62         typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
63         do_insert_hint_test<M>();
64     }
65 #endif
66 
67   return 0;
68 }
69