copy_alloc.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(const unordered_map& u, const allocator_type& a);
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
28int main()
29{
30    {
31        typedef std::unordered_map<int, std::string,
32                                   test_hash<std::hash<int> >,
33                                   test_compare<std::equal_to<int> >,
34                                   test_allocator<std::pair<const int, std::string> >
35                                   > C;
36        typedef std::pair<int, std::string> P;
37        P a[] =
38        {
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        C c0(a, a + sizeof(a)/sizeof(a[0]),
47            7,
48            test_hash<std::hash<int> >(8),
49            test_compare<std::equal_to<int> >(9),
50            test_allocator<std::pair<const int, std::string> >(10)
51           );
52        C c(c0, test_allocator<std::pair<const int, std::string> >(5));
53        assert(c.bucket_count() == 7);
54        assert(c.size() == 4);
55        assert(c.at(1) == "one");
56        assert(c.at(2) == "two");
57        assert(c.at(3) == "three");
58        assert(c.at(4) == "four");
59        assert(c.hash_function() == test_hash<std::hash<int> >(8));
60        assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
61        assert(c.get_allocator() ==
62               (test_allocator<std::pair<const int, std::string> >(5)));
63        assert(!c.empty());
64        assert(std::distance(c.begin(), c.end()) == c.size());
65        assert(std::distance(c.cbegin(), c.cend()) == c.size());
66        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
67        assert(c.max_load_factor() == 1);
68    }
69#if __cplusplus >= 201103L
70    {
71        typedef std::unordered_map<int, std::string,
72                                   test_hash<std::hash<int> >,
73                                   test_compare<std::equal_to<int> >,
74                                   min_allocator<std::pair<const int, std::string> >
75                                   > C;
76        typedef std::pair<int, std::string> P;
77        P a[] =
78        {
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        C c0(a, a + sizeof(a)/sizeof(a[0]),
87            7,
88            test_hash<std::hash<int> >(8),
89            test_compare<std::equal_to<int> >(9),
90            min_allocator<std::pair<const int, std::string> >()
91           );
92        C c(c0, min_allocator<std::pair<const int, std::string> >());
93        assert(c.bucket_count() == 7);
94        assert(c.size() == 4);
95        assert(c.at(1) == "one");
96        assert(c.at(2) == "two");
97        assert(c.at(3) == "three");
98        assert(c.at(4) == "four");
99        assert(c.hash_function() == test_hash<std::hash<int> >(8));
100        assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
101        assert(c.get_allocator() ==
102               (min_allocator<std::pair<const int, std::string> >()));
103        assert(!c.empty());
104        assert(std::distance(c.begin(), c.end()) == c.size());
105        assert(std::distance(c.cbegin(), c.cend()) == c.size());
106        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
107        assert(c.max_load_factor() == 1);
108    }
109#endif
110}
111