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// size_type bucket(const key_type& __k) const;
17
18#ifdef _LIBCPP_DEBUG
19#define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
20#endif
21
22#include <unordered_set>
23#include <cassert>
24
25#include "test_macros.h"
26#include "min_allocator.h"
27
28int main()
29{
30    {
31        typedef std::unordered_set<int> C;
32        typedef int P;
33        P a[] =
34        {
35            P(1),
36            P(2),
37            P(3),
38            P(4),
39            P(1),
40            P(2)
41        };
42        const C c(std::begin(a), std::end(a));
43        size_t bc = c.bucket_count();
44        assert(bc >= 5);
45        for (size_t i = 0; i < 13; ++i)
46            LIBCPP_ASSERT(c.bucket(i) == i % bc);
47    }
48#if TEST_STD_VER >= 11
49    {
50        typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
51        typedef int P;
52        P a[] =
53        {
54            P(1),
55            P(2),
56            P(3),
57            P(4),
58            P(1),
59            P(2)
60        };
61        const C c(std::begin(a), std::end(a));
62        size_t bc = c.bucket_count();
63        assert(bc >= 5);
64        for (size_t i = 0; i < 13; ++i)
65            LIBCPP_ASSERT(c.bucket(i) == i % bc);
66    }
67#endif
68#if _LIBCPP_DEBUG_LEVEL >= 1
69    {
70        typedef std::unordered_set<int> C;
71        C c;
72        C::size_type i = c.bucket(3);
73        assert(false);
74    }
75#endif
76}
77