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      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_multiset
     15 
     16 // unordered_multiset();
     17 
     18 #include <unordered_set>
     19 #include <cassert>
     20 
     21 #include "test_macros.h"
     22 #include "../../../NotConstructible.h"
     23 #include "../../../test_compare.h"
     24 #include "../../../test_hash.h"
     25 #include "test_allocator.h"
     26 #include "min_allocator.h"
     27 
     28 int main()
     29 {
     30     {
     31         typedef std::unordered_multiset<NotConstructible,
     32                                    test_hash<std::hash<NotConstructible> >,
     33                                    test_compare<std::equal_to<NotConstructible> >,
     34                                    test_allocator<NotConstructible>
     35                                    > C;
     36         C c;
     37         LIBCPP_ASSERT(c.bucket_count() == 0);
     38         assert(c.hash_function() == test_hash<std::hash<NotConstructible> >());
     39         assert(c.key_eq() == test_compare<std::equal_to<NotConstructible> >());
     40         assert(c.get_allocator() == (test_allocator<NotConstructible>()));
     41         assert(c.size() == 0);
     42         assert(c.empty());
     43         assert(std::distance(c.begin(), c.end()) == 0);
     44         assert(c.load_factor() == 0);
     45         assert(c.max_load_factor() == 1);
     46     }
     47 #if TEST_STD_VER >= 11
     48     {
     49         typedef std::unordered_multiset<NotConstructible,
     50                                    test_hash<std::hash<NotConstructible> >,
     51                                    test_compare<std::equal_to<NotConstructible> >,
     52                                    min_allocator<NotConstructible>
     53                                    > C;
     54         C c;
     55         LIBCPP_ASSERT(c.bucket_count() == 0);
     56         assert(c.hash_function() == test_hash<std::hash<NotConstructible> >());
     57         assert(c.key_eq() == test_compare<std::equal_to<NotConstructible> >());
     58         assert(c.get_allocator() == (min_allocator<NotConstructible>()));
     59         assert(c.size() == 0);
     60         assert(c.empty());
     61         assert(std::distance(c.begin(), c.end()) == 0);
     62         assert(c.load_factor() == 0);
     63         assert(c.max_load_factor() == 1);
     64     }
     65     {
     66         typedef explicit_allocator<NotConstructible> A;
     67         typedef std::unordered_multiset<NotConstructible,
     68                                    test_hash<std::hash<NotConstructible> >,
     69                                    test_compare<std::equal_to<NotConstructible> >,
     70                                    A
     71                                    > C;
     72         {
     73         C c;
     74         LIBCPP_ASSERT(c.bucket_count() == 0);
     75         assert(c.hash_function() == test_hash<std::hash<NotConstructible> >());
     76         assert(c.key_eq() == test_compare<std::equal_to<NotConstructible> >());
     77         assert(c.get_allocator() == A());
     78         assert(c.size() == 0);
     79         assert(c.empty());
     80         assert(std::distance(c.begin(), c.end()) == 0);
     81         assert(c.load_factor() == 0);
     82         assert(c.max_load_factor() == 1);
     83         }
     84         {
     85         A a;
     86         C c(a);
     87         LIBCPP_ASSERT(c.bucket_count() == 0);
     88         assert(c.hash_function() == test_hash<std::hash<NotConstructible> >());
     89         assert(c.key_eq() == test_compare<std::equal_to<NotConstructible> >());
     90         assert(c.get_allocator() == a);
     91         assert(c.size() == 0);
     92         assert(c.empty());
     93         assert(std::distance(c.begin(), c.end()) == 0);
     94         assert(c.load_factor() == 0);
     95         assert(c.max_load_factor() == 1);
     96         }
     97     }
     98     {
     99         std::unordered_multiset<int> c = {};
    100         LIBCPP_ASSERT(c.bucket_count() == 0);
    101         assert(c.size() == 0);
    102         assert(c.empty());
    103         assert(std::distance(c.begin(), c.end()) == 0);
    104         assert(c.load_factor() == 0);
    105         assert(c.max_load_factor() == 1);
    106     }
    107 #endif
    108 }
    109