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_map
15 
16 // unordered_map(initializer_list<value_type> il, size_type n,
17 //               const hasher& hf, const key_equal& eql);
18 
19 #include <unordered_map>
20 #include <string>
21 #include <cassert>
22 #include <cfloat>
23 
24 #include "../../../test_compare.h"
25 #include "../../../test_hash.h"
26 #include "../../../test_allocator.h"
27 #include "../../../min_allocator.h"
28 
29 int main()
30 {
31 #ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
32     {
33         typedef std::unordered_map<int, std::string,
34                                    test_hash<std::hash<int> >,
35                                    test_compare<std::equal_to<int> >,
36                                    test_allocator<std::pair<const int, std::string> >
37                                    > C;
38         typedef std::pair<int, std::string> P;
39         C c({
40                 P(1, "one"),
41                 P(2, "two"),
42                 P(3, "three"),
43                 P(4, "four"),
44                 P(1, "four"),
45                 P(2, "four"),
46             },
47             7,
48             test_hash<std::hash<int> >(8),
49             test_compare<std::equal_to<int> >(9)
50            );
51         assert(c.bucket_count() == 7);
52         assert(c.size() == 4);
53         assert(c.at(1) == "one");
54         assert(c.at(2) == "two");
55         assert(c.at(3) == "three");
56         assert(c.at(4) == "four");
57         assert(c.hash_function() == test_hash<std::hash<int> >(8));
58         assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
59         assert(c.get_allocator() ==
60                (test_allocator<std::pair<const int, std::string> >()));
61         assert(!c.empty());
62         assert(std::distance(c.begin(), c.end()) == c.size());
63         assert(std::distance(c.cbegin(), c.cend()) == c.size());
64         assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
65         assert(c.max_load_factor() == 1);
66     }
67 #if __cplusplus >= 201103L
68     {
69         typedef std::unordered_map<int, std::string,
70                                    test_hash<std::hash<int> >,
71                                    test_compare<std::equal_to<int> >,
72                                    min_allocator<std::pair<const int, std::string> >
73                                    > C;
74         typedef std::pair<int, std::string> P;
75         C c({
76                 P(1, "one"),
77                 P(2, "two"),
78                 P(3, "three"),
79                 P(4, "four"),
80                 P(1, "four"),
81                 P(2, "four"),
82             },
83             7,
84             test_hash<std::hash<int> >(8),
85             test_compare<std::equal_to<int> >(9)
86            );
87         assert(c.bucket_count() == 7);
88         assert(c.size() == 4);
89         assert(c.at(1) == "one");
90         assert(c.at(2) == "two");
91         assert(c.at(3) == "three");
92         assert(c.at(4) == "four");
93         assert(c.hash_function() == test_hash<std::hash<int> >(8));
94         assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
95         assert(c.get_allocator() ==
96                (min_allocator<std::pair<const int, std::string> >()));
97         assert(!c.empty());
98         assert(std::distance(c.begin(), c.end()) == c.size());
99         assert(std::distance(c.cbegin(), c.cend()) == c.size());
100         assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
101         assert(c.max_load_factor() == 1);
102     }
103 #endif
104 #endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
105 }
106