1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <unordered_map>
11 
12 // template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
13 //           class Alloc = allocator<pair<const Key, T>>>
14 // class unordered_multimap
15 
16 // template <class... Args>
17 //     iterator emplace(Args&&... args);
18 
19 #include <unordered_map>
20 #include <cassert>
21 
22 #include "../../../Emplaceable.h"
23 #include "../../../min_allocator.h"
24 
25 int main()
26 {
27 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
28     {
29         typedef std::unordered_multimap<int, Emplaceable> C;
30         typedef C::iterator R;
31         C c;
32         R r = c.emplace(std::piecewise_construct, std::forward_as_tuple(3),
33                                                   std::forward_as_tuple());
34         assert(c.size() == 1);
35         assert(r->first == 3);
36         assert(r->second == Emplaceable());
37 
38         r = c.emplace(std::pair<const int, Emplaceable>(4, Emplaceable(5, 6)));
39         assert(c.size() == 2);
40         assert(r->first == 4);
41         assert(r->second == Emplaceable(5, 6));
42 
43         r = c.emplace(std::piecewise_construct, std::forward_as_tuple(5),
44                                                 std::forward_as_tuple(6, 7));
45         assert(c.size() == 3);
46         assert(r->first == 5);
47         assert(r->second == Emplaceable(6, 7));
48     }
49 #if __cplusplus >= 201103L
50     {
51         typedef std::unordered_multimap<int, Emplaceable, std::hash<int>, std::equal_to<int>,
52                             min_allocator<std::pair<const int, Emplaceable>>> C;
53         typedef C::iterator R;
54         C c;
55         R r = c.emplace(std::piecewise_construct, std::forward_as_tuple(3),
56                                                   std::forward_as_tuple());
57         assert(c.size() == 1);
58         assert(r->first == 3);
59         assert(r->second == Emplaceable());
60 
61         r = c.emplace(std::pair<const int, Emplaceable>(4, Emplaceable(5, 6)));
62         assert(c.size() == 2);
63         assert(r->first == 4);
64         assert(r->second == Emplaceable(5, 6));
65 
66         r = c.emplace(std::piecewise_construct, std::forward_as_tuple(5),
67                                                 std::forward_as_tuple(6, 7));
68         assert(c.size() == 3);
69         assert(r->first == 5);
70         assert(r->second == Emplaceable(6, 7));
71     }
72 #endif
73 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
74 }
75