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 // <unordered_map>
10
11 // template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
12 // class Alloc = allocator<pair<const Key, T>>>
13 // class unordered_map
14
15 // pair<const_iterator, const_iterator> equal_range(const key_type& k) const;
16
17 #include <unordered_map>
18 #include <string>
19 #include <cassert>
20 #include <iterator>
21
22 #include "test_macros.h"
23 #include "min_allocator.h"
24
main(int,char **)25 int main(int, char**)
26 {
27 {
28 typedef std::unordered_map<int, std::string> C;
29 typedef C::const_iterator I;
30 typedef std::pair<int, std::string> P;
31 P a[] =
32 {
33 P(10, "ten"),
34 P(20, "twenty"),
35 P(30, "thirty"),
36 P(40, "forty"),
37 P(50, "fifty"),
38 P(60, "sixty"),
39 P(70, "seventy"),
40 P(80, "eighty"),
41 };
42 const C c(std::begin(a), std::end(a));
43 std::pair<I, I> r = c.equal_range(30);
44 assert(std::distance(r.first, r.second) == 1);
45 assert(r.first->first == 30);
46 assert(r.first->second == "thirty");
47 r = c.equal_range(5);
48 assert(std::distance(r.first, r.second) == 0);
49 }
50 #if TEST_STD_VER >= 11
51 {
52 typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
53 min_allocator<std::pair<const int, std::string>>> C;
54 typedef C::const_iterator I;
55 typedef std::pair<int, std::string> P;
56 P a[] =
57 {
58 P(10, "ten"),
59 P(20, "twenty"),
60 P(30, "thirty"),
61 P(40, "forty"),
62 P(50, "fifty"),
63 P(60, "sixty"),
64 P(70, "seventy"),
65 P(80, "eighty"),
66 };
67 const C c(std::begin(a), std::end(a));
68 std::pair<I, I> r = c.equal_range(30);
69 assert(std::distance(r.first, r.second) == 1);
70 assert(r.first->first == 30);
71 assert(r.first->second == "thirty");
72 r = c.equal_range(5);
73 assert(std::distance(r.first, r.second) == 0);
74 }
75 #endif
76
77 return 0;
78 }
79