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// <unordered_map>
12
13// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
14// class Alloc = allocator<pair<const Key, T>>>
15// class unordered_multimap
16
17// unordered_multimap& operator=(initializer_list<value_type> il);
18
19#include <unordered_map>
20#include <string>
21#include <set>
22#include <cassert>
23#include <cfloat>
24#include <cmath>
25#include <cstddef>
26
27#include "test_macros.h"
28#include "../../../check_consecutive.h"
29#include "../../../test_compare.h"
30#include "../../../test_hash.h"
31#include "test_allocator.h"
32#include "min_allocator.h"
33
34int main(int, char**)
35{
36 {
37 typedef test_allocator<std::pair<const int, std::string> > A;
38 typedef std::unordered_multimap<int, std::string,
39 test_hash<int>,
40 test_equal_to<int>,
41 A
42 > C;
43 typedef std::pair<int, std::string> P;
44 C c = {
45 P(4, "four"),
46 P(1, "four"),
47 P(2, "four"),
48 };
49 c = {
50 P(1, "one"),
51 P(2, "two"),
52 P(3, "three"),
53 P(4, "four"),
54 P(1, "four"),
55 P(2, "four"),
56 };
57 assert(c.bucket_count() >= 7);
58 assert(c.size() == 6);
59 typedef std::pair<C::const_iterator, C::const_iterator> Eq;
60 Eq eq = c.equal_range(1);
61 assert(std::distance(eq.first, eq.second) == 2);
62 std::multiset<std::string> s;
63 s.insert(x: "one");
64 s.insert(x: "four");
65 CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
66 eq = c.equal_range(2);
67 assert(std::distance(eq.first, eq.second) == 2);
68 s.insert(x: "two");
69 s.insert(x: "four");
70 CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
71
72 eq = c.equal_range(3);
73 assert(std::distance(eq.first, eq.second) == 1);
74 C::const_iterator i = eq.first;
75 assert(i->first == 3);
76 assert(i->second == "three");
77 eq = c.equal_range(4);
78 assert(std::distance(eq.first, eq.second) == 1);
79 i = eq.first;
80 assert(i->first == 4);
81 assert(i->second == "four");
82 assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
83 assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
84 assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
85 assert(c.max_load_factor() == 1);
86 }
87 {
88 typedef min_allocator<std::pair<const int, std::string> > A;
89 typedef std::unordered_multimap<int, std::string,
90 test_hash<int>,
91 test_equal_to<int>,
92 A
93 > C;
94 typedef std::pair<int, std::string> P;
95 C c = {
96 P(4, "four"),
97 P(1, "four"),
98 P(2, "four"),
99 };
100 c = {
101 P(1, "one"),
102 P(2, "two"),
103 P(3, "three"),
104 P(4, "four"),
105 P(1, "four"),
106 P(2, "four"),
107 };
108 assert(c.bucket_count() >= 7);
109 assert(c.size() == 6);
110 typedef std::pair<C::const_iterator, C::const_iterator> Eq;
111 Eq eq = c.equal_range(x: 1);
112 assert(std::distance(eq.first, eq.second) == 2);
113 std::multiset<std::string> s;
114 s.insert(x: "one");
115 s.insert(x: "four");
116 CheckConsecutiveKeys<C::const_iterator>(pos: c.find(x: 1), end: c.end(), key: 1, values&: s);
117 eq = c.equal_range(x: 2);
118 assert(std::distance(eq.first, eq.second) == 2);
119 s.insert(x: "two");
120 s.insert(x: "four");
121 CheckConsecutiveKeys<C::const_iterator>(pos: c.find(x: 2), end: c.end(), key: 2, values&: s);
122
123 eq = c.equal_range(x: 3);
124 assert(std::distance(eq.first, eq.second) == 1);
125 C::const_iterator i = eq.first;
126 assert(i->first == 3);
127 assert(i->second == "three");
128 eq = c.equal_range(x: 4);
129 assert(std::distance(eq.first, eq.second) == 1);
130 i = eq.first;
131 assert(i->first == 4);
132 assert(i->second == "four");
133 assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
134 assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
135 assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
136 assert(c.max_load_factor() == 1);
137 }
138
139 return 0;
140}
141

source code of libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/assign_init.pass.cpp