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