test/std/containers/unord/unord.set/unord.set.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_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 // unordered_set(initializer_list<value_type> il, size_type n,
  17 //               const hasher& hf, const key_equal& eql, const allocator_type& a);
  18
  19 #include <unordered_set>
  20 #include <cassert>
  21 #include <cfloat>
  22 #include <cmath>
  23
  24 #include "../../../test_compare.h"
  25 #include "../../../test_hash.h"
  26 #include "test_allocator.h"
  27 #include "min_allocator.h"
  28
  29 int main()
  30 {
  31 #ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
  32     {
  33         typedef std::unordered_set<int,
  34                                    test_hash<std::hash<int> >,
  35                                    test_compare<std::equal_to<int> >,
  36                                    test_allocator<int>
  37                                    > C;
  38         typedef int P;
  39         C c({
  40                 P(1),
  41                 P(2),
  42                 P(3),
  43                 P(4),
  44                 P(1),
  45                 P(2)
  46             },
  47             7,
  48             test_hash<std::hash<int> >(8),
  49             test_compare<std::equal_to<int> >(9),
  50             test_allocator<int>(10)
  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>(10));
  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(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
  65         assert(c.max_load_factor() == 1);
  66     }
  67 #if __cplusplus >= 201103L
  68     {
  69         typedef std::unordered_set<int,
  70                                    test_hash<std::hash<int> >,
  71                                    test_compare<std::equal_to<int> >,
  72                                    min_allocator<int>
  73                                    > C;
  74         typedef int P;
  75         C c({
  76                 P(1),
  77                 P(2),
  78                 P(3),
  79                 P(4),
  80                 P(1),
  81                 P(2)
  82             },
  83             7,
  84             test_hash<std::hash<int> >(8),
  85             test_compare<std::equal_to<int> >(9),
  86             min_allocator<int>()
  87            );
  88         assert(c.bucket_count() == 7);
  89         assert(c.size() == 4);
  90         assert(c.count(1) == 1);
  91         assert(c.count(2) == 1);
  92         assert(c.count(3) == 1);
  93         assert(c.count(4) == 1);
  94         assert(c.hash_function() == test_hash<std::hash<int> >(8));
  95         assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
  96         assert(c.get_allocator() == min_allocator<int>());
  97         assert(!c.empty());
  98         assert(std::distance(c.begin(), c.end()) == c.size());
  99         assert(std::distance(c.cbegin(), c.cend()) == c.size());
 100         assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
 101         assert(c.max_load_factor() == 1);
 102     }
 103 #endif
 104 #endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
 105 }