test/std/containers/unord/unord.map/unord.map.cnstr/range_size_hash_equal_allocator.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 // <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 // template <class InputIterator>
  17 //     unordered_map(InputIterator first, InputIterator last, size_type n,
  18 //                   const hasher& hf, const key_equal& eql,
  19 //                   const allocator_type& a);
  20
  21 #include <unordered_map>
  22 #include <string>
  23 #include <cassert>
  24 #include <cfloat>
  25 #include <cmath>
  26 #include <cstddef>
  27
  28 #include "test_macros.h"
  29 #include "test_iterators.h"
  30 #include "../../../NotConstructible.h"
  31 #include "../../../test_compare.h"
  32 #include "../../../test_hash.h"
  33 #include "test_allocator.h"
  34 #include "min_allocator.h"
  35
  36 int main()
  37 {
  38     {
  39         typedef std::unordered_map<int, std::string,
  40                                    test_hash<std::hash<int> >,
  41                                    test_compare<std::equal_to<int> >,
  42                                    test_allocator<std::pair<const int, std::string> >
  43                                    > C;
  44         typedef std::pair<int, std::string> P;
  45         P a[] =
  46         {
  47             P(1, "one"),
  48             P(2, "two"),
  49             P(3, "three"),
  50             P(4, "four"),
  51             P(1, "four"),
  52             P(2, "four"),
  53         };
  54         C c(input_iterator<P*>(a), input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
  55             7,
  56             test_hash<std::hash<int> >(8),
  57             test_compare<std::equal_to<int> >(9),
  58             test_allocator<std::pair<const int, std::string> >(10)
  59            );
  60         LIBCPP_ASSERT(c.bucket_count() == 7);
  61         assert(c.size() == 4);
  62         assert(c.at(1) == "one");
  63         assert(c.at(2) == "two");
  64         assert(c.at(3) == "three");
  65         assert(c.at(4) == "four");
  66         assert(c.hash_function() == test_hash<std::hash<int> >(8));
  67         assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
  68         assert(c.get_allocator() ==
  69                (test_allocator<std::pair<const int, std::string> >(10)));
  70         assert(!c.empty());
  71         assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
  72         assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
  73         assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
  74         assert(c.max_load_factor() == 1);
  75     }
  76 #if TEST_STD_VER >= 11
  77     {
  78         typedef std::unordered_map<int, std::string,
  79                                    test_hash<std::hash<int> >,
  80                                    test_compare<std::equal_to<int> >,
  81                                    min_allocator<std::pair<const int, std::string> >
  82                                    > C;
  83         typedef std::pair<int, std::string> P;
  84         P a[] =
  85         {
  86             P(1, "one"),
  87             P(2, "two"),
  88             P(3, "three"),
  89             P(4, "four"),
  90             P(1, "four"),
  91             P(2, "four"),
  92         };
  93         C c(input_iterator<P*>(a), input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
  94             7,
  95             test_hash<std::hash<int> >(8),
  96             test_compare<std::equal_to<int> >(9),
  97             min_allocator<std::pair<const int, std::string> >()
  98            );
  99         LIBCPP_ASSERT(c.bucket_count() == 7);
 100         assert(c.size() == 4);
 101         assert(c.at(1) == "one");
 102         assert(c.at(2) == "two");
 103         assert(c.at(3) == "three");
 104         assert(c.at(4) == "four");
 105         assert(c.hash_function() == test_hash<std::hash<int> >(8));
 106         assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
 107         assert(c.get_allocator() ==
 108                (min_allocator<std::pair<const int, std::string> >()));
 109         assert(!c.empty());
 110         assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
 111         assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
 112         assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
 113         assert(c.max_load_factor() == 1);
 114     }
 115     {
 116         typedef explicit_allocator<std::pair<const int, std::string>> A;
 117         typedef std::unordered_map<int, std::string,
 118                                    test_hash<std::hash<int> >,
 119                                    test_compare<std::equal_to<int> >,
 120                                    A
 121                                    > C;
 122         typedef std::pair<int, std::string> P;
 123         P a[] =
 124         {
 125             P(1, "one"),
 126             P(2, "two"),
 127             P(3, "three"),
 128             P(4, "four"),
 129             P(1, "four"),
 130             P(2, "four"),
 131         };
 132         C c(input_iterator<P*>(a), input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
 133             7,
 134             test_hash<std::hash<int> >(8),
 135             test_compare<std::equal_to<int> >(9),
 136             A{}
 137            );
 138         LIBCPP_ASSERT(c.bucket_count() == 7);
 139         assert(c.size() == 4);
 140         assert(c.at(1) == "one");
 141         assert(c.at(2) == "two");
 142         assert(c.at(3) == "three");
 143         assert(c.at(4) == "four");
 144         assert(c.hash_function() == test_hash<std::hash<int> >(8));
 145         assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
 146         assert(c.get_allocator() == A{});
 147         assert(!c.empty());
 148         assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
 149         assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
 150         assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
 151         assert(c.max_load_factor() == 1);
 152     }
 153 #endif
 154 }