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_set>
11 
12 // template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
13 //           class Alloc = allocator<Value>>
14 // class unordered_set
15 
16 // unordered_set(const unordered_set& u);
17 
18 #include <unordered_set>
19 #include <cassert>
20 #include <cfloat>
21 
22 #include "../../../test_compare.h"
23 #include "../../../test_hash.h"
24 #include "../../../test_allocator.h"
25 #include "../../../min_allocator.h"
26 
27 int main()
28 {
29     {
30         typedef std::unordered_set<int,
31                                    test_hash<std::hash<int> >,
32                                    test_compare<std::equal_to<int> >,
33                                    test_allocator<int>
34                                    > C;
35         typedef int P;
36         P a[] =
37         {
38             P(1),
39             P(2),
40             P(3),
41             P(4),
42             P(1),
43             P(2)
44         };
45         C c0(a, a + sizeof(a)/sizeof(a[0]),
46             7,
47             test_hash<std::hash<int> >(8),
48             test_compare<std::equal_to<int> >(9),
49             test_allocator<int>(10)
50            );
51         C c = c0;
52         assert(c.bucket_count() == 7);
53         assert(c.size() == 4);
54         assert(c.count(1) == 1);
55         assert(c.count(2) == 1);
56         assert(c.count(3) == 1);
57         assert(c.count(4) == 1);
58         assert(c.hash_function() == test_hash<std::hash<int> >(8));
59         assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
60         assert(c.get_allocator() == test_allocator<int>(10));
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 #ifndef _LIBCPP_HAS_NO_ADVANCED_SFINAE
68     {
69         typedef std::unordered_set<int,
70                                    test_hash<std::hash<int> >,
71                                    test_compare<std::equal_to<int> >,
72                                    other_allocator<int>
73                                    > C;
74         typedef int P;
75         P a[] =
76         {
77             P(1),
78             P(2),
79             P(3),
80             P(4),
81             P(1),
82             P(2)
83         };
84         C c0(a, a + sizeof(a)/sizeof(a[0]),
85             7,
86             test_hash<std::hash<int> >(8),
87             test_compare<std::equal_to<int> >(9),
88             other_allocator<int>(10)
89            );
90         C c = c0;
91         assert(c.bucket_count() == 7);
92         assert(c.size() == 4);
93         assert(c.count(1) == 1);
94         assert(c.count(2) == 1);
95         assert(c.count(3) == 1);
96         assert(c.count(4) == 1);
97         assert(c.hash_function() == test_hash<std::hash<int> >(8));
98         assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
99         assert(c.get_allocator() == other_allocator<int>(-2));
100         assert(!c.empty());
101         assert(std::distance(c.begin(), c.end()) == c.size());
102         assert(std::distance(c.cbegin(), c.cend()) == c.size());
103         assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
104         assert(c.max_load_factor() == 1);
105     }
106 #endif  // _LIBCPP_HAS_NO_ADVANCED_SFINAE
107 #if __cplusplus >= 201103L
108     {
109         typedef std::unordered_set<int,
110                                    test_hash<std::hash<int> >,
111                                    test_compare<std::equal_to<int> >,
112                                    min_allocator<int>
113                                    > C;
114         typedef int P;
115         P a[] =
116         {
117             P(1),
118             P(2),
119             P(3),
120             P(4),
121             P(1),
122             P(2)
123         };
124         C c0(a, a + sizeof(a)/sizeof(a[0]),
125             7,
126             test_hash<std::hash<int> >(8),
127             test_compare<std::equal_to<int> >(9),
128             min_allocator<int>()
129            );
130         C c = c0;
131         assert(c.bucket_count() == 7);
132         assert(c.size() == 4);
133         assert(c.count(1) == 1);
134         assert(c.count(2) == 1);
135         assert(c.count(3) == 1);
136         assert(c.count(4) == 1);
137         assert(c.hash_function() == test_hash<std::hash<int> >(8));
138         assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
139         assert(c.get_allocator() == min_allocator<int>());
140         assert(!c.empty());
141         assert(std::distance(c.begin(), c.end()) == c.size());
142         assert(std::distance(c.cbegin(), c.cend()) == c.size());
143         assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
144         assert(c.max_load_factor() == 1);
145     }
146 #endif
147 }
148