test/std/containers/unord/unord.map/unord.map.cnstr/init_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 // unordered_map(initializer_list<value_type> il, size_type n,
  17 //               const hasher& hf, const key_equal& eql, const allocator_type& a);
  18
  19 #include <unordered_map>
  20 #include <string>
  21 #include <cassert>
  22 #include <cfloat>
  23 #include <cmath>
  24
  25 #include "../../../test_compare.h"
  26 #include "../../../test_hash.h"
  27 #include "test_allocator.h"
  28 #include "min_allocator.h"
  29
  30 int main()
  31 {
  32 #ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
  33     {
  34         typedef std::unordered_map<int, std::string,
  35                                    test_hash<std::hash<int> >,
  36                                    test_compare<std::equal_to<int> >,
  37                                    test_allocator<std::pair<const int, std::string> >
  38                                    > C;
  39         typedef std::pair<int, std::string> P;
  40         C c({
  41                 P(1, "one"),
  42                 P(2, "two"),
  43                 P(3, "three"),
  44                 P(4, "four"),
  45                 P(1, "four"),
  46                 P(2, "four"),
  47             },
  48             7,
  49             test_hash<std::hash<int> >(8),
  50             test_compare<std::equal_to<int> >(9),
  51             test_allocator<std::pair<const int, std::string> >(10)
  52            );
  53         assert(c.bucket_count() == 7);
  54         assert(c.size() == 4);
  55         assert(c.at(1) == "one");
  56         assert(c.at(2) == "two");
  57         assert(c.at(3) == "three");
  58         assert(c.at(4) == "four");
  59         assert(c.hash_function() == test_hash<std::hash<int> >(8));
  60         assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
  61         assert(c.get_allocator() ==
  62                (test_allocator<std::pair<const int, std::string> >(10)));
  63         assert(!c.empty());
  64         assert(std::distance(c.begin(), c.end()) == c.size());
  65         assert(std::distance(c.cbegin(), c.cend()) == c.size());
  66         assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
  67         assert(c.max_load_factor() == 1);
  68     }
  69 #if __cplusplus >= 201103L
  70     {
  71         typedef std::unordered_map<int, std::string,
  72                                    test_hash<std::hash<int> >,
  73                                    test_compare<std::equal_to<int> >,
  74                                    min_allocator<std::pair<const int, std::string> >
  75                                    > C;
  76         typedef std::pair<int, std::string> P;
  77         C c({
  78                 P(1, "one"),
  79                 P(2, "two"),
  80                 P(3, "three"),
  81                 P(4, "four"),
  82                 P(1, "four"),
  83                 P(2, "four"),
  84             },
  85             7,
  86             test_hash<std::hash<int> >(8),
  87             test_compare<std::equal_to<int> >(9),
  88             min_allocator<std::pair<const int, std::string> >()
  89            );
  90         assert(c.bucket_count() == 7);
  91         assert(c.size() == 4);
  92         assert(c.at(1) == "one");
  93         assert(c.at(2) == "two");
  94         assert(c.at(3) == "three");
  95         assert(c.at(4) == "four");
  96         assert(c.hash_function() == test_hash<std::hash<int> >(8));
  97         assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
  98         assert(c.get_allocator() ==
  99                (min_allocator<std::pair<const int, std::string> >()));
 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(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
 104         assert(c.max_load_factor() == 1);
 105     }
 106 #endif
 107 #endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
 108 }