range_size_hash_equal.pass.cpp revision f836d531b4146465342939fe32ae47d157ee07b2 
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// template <class InputIterator>
17//     unordered_set(InputIterator first, InputIterator last, size_type n,
18//                   const hasher& hf, const key_equal& eql);
19
20#include <unordered_set>
21#include <cassert>
22#include <cfloat>
23
24#include "../../../iterators.h"
25#include "../../../test_compare.h"
26#include "../../../test_hash.h"
27#include "../../../test_allocator.h"
28
29int main()
30{
31    {
32        typedef std::unordered_set<int,
33                                   test_hash<std::hash<int> >,
34                                   test_compare<std::equal_to<int> >,
35                                   test_allocator<int>
36                                   > C;
37        typedef int P;
38        P a[] =
39        {
40            P(1),
41            P(2),
42            P(3),
43            P(4),
44            P(1),
45            P(2)
46        };
47        C c(input_iterator<P*>(a), input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
48            7,
49            test_hash<std::hash<int> >(8),
50            test_compare<std::equal_to<int> >(9)
51           );
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>());
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}
68