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// UNSUPPORTED: c++98, c++03
11
12// <unordered_map>
13
14// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
15//           class Alloc = allocator<pair<const Key, T>>>
16// class unordered_map
17
18// unordered_map(initializer_list<value_type> il, size_type n,
19//               const hasher& hf, const key_equal& eql);
20
21#include <unordered_map>
22#include <string>
23#include <cassert>
24#include <cfloat>
25#include <cmath>
26#include <cstddef>
27
28#include "test_macros.h"
29#include "../../../test_compare.h"
30#include "../../../test_hash.h"
31#include "test_allocator.h"
32#include "min_allocator.h"
33
34int main()
35{
36    {
37        typedef std::unordered_map<int, std::string,
38                                   test_hash<std::hash<int> >,
39                                   test_compare<std::equal_to<int> >,
40                                   test_allocator<std::pair<const int, std::string> >
41                                   > C;
42        typedef std::pair<int, std::string> P;
43        C c({
44                P(1, "one"),
45                P(2, "two"),
46                P(3, "three"),
47                P(4, "four"),
48                P(1, "four"),
49                P(2, "four"),
50            },
51            7,
52            test_hash<std::hash<int> >(8),
53            test_compare<std::equal_to<int> >(9)
54           );
55        LIBCPP_ASSERT(c.bucket_count() == 7);
56        assert(c.size() == 4);
57        assert(c.at(1) == "one");
58        assert(c.at(2) == "two");
59        assert(c.at(3) == "three");
60        assert(c.at(4) == "four");
61        assert(c.hash_function() == test_hash<std::hash<int> >(8));
62        assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
63        assert(c.get_allocator() ==
64               (test_allocator<std::pair<const int, std::string> >()));
65        assert(!c.empty());
66        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
67        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
68        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
69        assert(c.max_load_factor() == 1);
70    }
71    {
72        typedef std::unordered_map<int, std::string,
73                                   test_hash<std::hash<int> >,
74                                   test_compare<std::equal_to<int> >,
75                                   min_allocator<std::pair<const int, std::string> >
76                                   > C;
77        typedef std::pair<int, std::string> P;
78        C c({
79                P(1, "one"),
80                P(2, "two"),
81                P(3, "three"),
82                P(4, "four"),
83                P(1, "four"),
84                P(2, "four"),
85            },
86            7,
87            test_hash<std::hash<int> >(8),
88            test_compare<std::equal_to<int> >(9)
89           );
90        LIBCPP_ASSERT(c.bucket_count() == 7);
91        assert(c.size() == 4);
92        assert(c.at(1) == "one");
93        assert(c.at(2) == "two");
94        assert(c.at(3) == "three");
95        assert(c.at(4) == "four");
96        assert(c.hash_function() == test_hash<std::hash<int> >(8));
97        assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
98        assert(c.get_allocator() ==
99               (min_allocator<std::pair<const int, std::string> >()));
100        assert(!c.empty());
101        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
102        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
103        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
104        assert(c.max_load_factor() == 1);
105    }
106}
107