test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init.pass.cpp

   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 // UNSUPPORTED: c++98, c++03
  11
  12 // <unordered_set>
  13
  14 // template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
  15 //           class Alloc = allocator<Value>>
  16 // class unordered_multiset
  17
  18 // unordered_multiset(initializer_list<value_type> il);
  19
  20 #include <unordered_set>
  21 #include <cassert>
  22 #include <cfloat>
  23 #include <cmath>
  24 #include <cstddef>
  25
  26 #include "test_macros.h"
  27 #include "../../../test_compare.h"
  28 #include "../../../test_hash.h"
  29 #include "test_allocator.h"
  30 #include "min_allocator.h"
  31
  32 int main()
  33 {
  34     {
  35         typedef std::unordered_multiset<int,
  36                                    test_hash<std::hash<int> >,
  37                                    test_compare<std::equal_to<int> >,
  38                                    test_allocator<int>
  39                                    > C;
  40         typedef int P;
  41         C c = {
  42                 P(1),
  43                 P(2),
  44                 P(3),
  45                 P(4),
  46                 P(1),
  47                 P(2)
  48             };
  49         assert(c.bucket_count() >= 7);
  50         assert(c.size() == 6);
  51         assert(c.count(1) == 2);
  52         assert(c.count(2) == 2);
  53         assert(c.count(3) == 1);
  54         assert(c.count(4) == 1);
  55         assert(c.hash_function() == test_hash<std::hash<int> >());
  56         assert(c.key_eq() == test_compare<std::equal_to<int> >());
  57         assert(c.get_allocator() == test_allocator<int>());
  58         assert(!c.empty());
  59         assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
  60         assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
  61         assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
  62         assert(c.max_load_factor() == 1);
  63     }
  64     {
  65         typedef std::unordered_multiset<int,
  66                                    test_hash<std::hash<int> >,
  67                                    test_compare<std::equal_to<int> >,
  68                                    min_allocator<int>
  69                                    > C;
  70         typedef int P;
  71         C c = {
  72                 P(1),
  73                 P(2),
  74                 P(3),
  75                 P(4),
  76                 P(1),
  77                 P(2)
  78             };
  79         assert(c.bucket_count() >= 7);
  80         assert(c.size() == 6);
  81         assert(c.count(1) == 2);
  82         assert(c.count(2) == 2);
  83         assert(c.count(3) == 1);
  84         assert(c.count(4) == 1);
  85         assert(c.hash_function() == test_hash<std::hash<int> >());
  86         assert(c.key_eq() == test_compare<std::equal_to<int> >());
  87         assert(c.get_allocator() == min_allocator<int>());
  88         assert(!c.empty());
  89         assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
  90         assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
  91         assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
  92         assert(c.max_load_factor() == 1);
  93     }
  94 #if TEST_STD_VER > 11
  95     {
  96         typedef int T;
  97         typedef test_hash<std::hash<T>> HF;
  98         typedef test_compare<std::equal_to<T>> Comp;
  99         typedef test_allocator<T> A;
 100         typedef std::unordered_multiset<T, HF, Comp, A> C;
 101
 102         A a(42);
 103         C c({
 104                 T(1),
 105                 T(2),
 106                 T(3),
 107                 T(4),
 108                 T(1),
 109                 T(2)
 110             }, 12, a);
 111
 112         assert(c.bucket_count() >= 12);
 113         assert(c.size() == 6);
 114         assert(c.count(1) == 2);
 115         assert(c.count(2) == 2);
 116         assert(c.count(3) == 1);
 117         assert(c.count(4) == 1);
 118         assert(c.hash_function() == HF());
 119         assert(c.key_eq() == Comp());
 120         assert(c.get_allocator() == a);
 121         assert(!(c.get_allocator() == A()));
 122         assert(!c.empty());
 123         assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
 124         assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
 125         assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
 126         assert(c.max_load_factor() == 1);
 127     }
 128     {
 129         typedef int T;
 130         typedef test_hash<std::hash<T>> HF;
 131         typedef test_compare<std::equal_to<T>> Comp;
 132         typedef test_allocator<T> A;
 133         typedef std::unordered_multiset<T, HF, Comp, A> C;
 134
 135         A a(42);
 136         HF hf(43);
 137         C c({
 138                 T(1),
 139                 T(2),
 140                 T(3),
 141                 T(4),
 142                 T(1),
 143                 T(2)
 144             }, 12, hf, a);
 145
 146         assert(c.bucket_count() >= 12);
 147         assert(c.size() == 6);
 148         assert(c.count(1) == 2);
 149         assert(c.count(2) == 2);
 150         assert(c.count(3) == 1);
 151         assert(c.count(4) == 1);
 152         assert(c.hash_function() == hf);
 153         assert(!(c.hash_function() == HF()));
 154         assert(c.key_eq() == Comp());
 155         assert(c.get_allocator() == a);
 156         assert(!(c.get_allocator() == A()));
 157         assert(!c.empty());
 158         assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
 159         assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
 160         assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
 161         assert(c.max_load_factor() == 1);
 162     }
 163 #endif // TEST_STD_VER > 11
 164 }