init_size_hash_equal.pass.cpp revision 1b92188a82b01e76ac6e8ad5f997293c2a078adc 
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
29int 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