libcxx

libcxx mirror with random patches
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default.pass.cpp (4522B)

      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_multimap
     15 
     16 // unordered_multimap();
     17 
     18 #include <unordered_map>
     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_multimap<NotConstructible, NotConstructible,
     32                                    test_hash<std::hash<NotConstructible> >,
     33                                    test_compare<std::equal_to<NotConstructible> >,
     34                                    test_allocator<std::pair<const NotConstructible,
     35                                                                   NotConstructible> >
     36                                    > C;
     37         C c;
     38         LIBCPP_ASSERT(c.bucket_count() == 0);
     39         assert(c.hash_function() == test_hash<std::hash<NotConstructible> >());
     40         assert(c.key_eq() == test_compare<std::equal_to<NotConstructible> >());
     41         assert(c.get_allocator() ==
     42                (test_allocator<std::pair<const NotConstructible, NotConstructible> >()));
     43         assert(c.size() == 0);
     44         assert(c.empty());
     45         assert(std::distance(c.begin(), c.end()) == 0);
     46         assert(c.load_factor() == 0);
     47         assert(c.max_load_factor() == 1);
     48     }
     49 #if TEST_STD_VER >= 11
     50     {
     51         typedef std::unordered_multimap<NotConstructible, NotConstructible,
     52                                    test_hash<std::hash<NotConstructible> >,
     53                                    test_compare<std::equal_to<NotConstructible> >,
     54                                    min_allocator<std::pair<const NotConstructible,
     55                                                                  NotConstructible> >
     56                                    > C;
     57         C c;
     58         LIBCPP_ASSERT(c.bucket_count() == 0);
     59         assert(c.hash_function() == test_hash<std::hash<NotConstructible> >());
     60         assert(c.key_eq() == test_compare<std::equal_to<NotConstructible> >());
     61         assert(c.get_allocator() ==
     62                (min_allocator<std::pair<const NotConstructible, NotConstructible> >()));
     63         assert(c.size() == 0);
     64         assert(c.empty());
     65         assert(std::distance(c.begin(), c.end()) == 0);
     66         assert(c.load_factor() == 0);
     67         assert(c.max_load_factor() == 1);
     68     }
     69     {
     70         typedef explicit_allocator<std::pair<const NotConstructible, NotConstructible>> A;
     71         typedef std::unordered_multimap<NotConstructible, NotConstructible,
     72                                    test_hash<std::hash<NotConstructible> >,
     73                                    test_compare<std::equal_to<NotConstructible> >,
     74                                    A
     75                                    > C;
     76         {
     77         C c;
     78         LIBCPP_ASSERT(c.bucket_count() == 0);
     79         assert(c.hash_function() == test_hash<std::hash<NotConstructible> >());
     80         assert(c.key_eq() == test_compare<std::equal_to<NotConstructible> >());
     81         assert(c.get_allocator() == A());
     82         assert(c.size() == 0);
     83         assert(c.empty());
     84         assert(std::distance(c.begin(), c.end()) == 0);
     85         assert(c.load_factor() == 0);
     86         assert(c.max_load_factor() == 1);
     87         }
     88         {
     89         A a;
     90         C c(a);
     91         LIBCPP_ASSERT(c.bucket_count() == 0);
     92         assert(c.hash_function() == test_hash<std::hash<NotConstructible> >());
     93         assert(c.key_eq() == test_compare<std::equal_to<NotConstructible> >());
     94         assert(c.get_allocator() == a);
     95         assert(c.size() == 0);
     96         assert(c.empty());
     97         assert(std::distance(c.begin(), c.end()) == 0);
     98         assert(c.load_factor() == 0);
     99         assert(c.max_load_factor() == 1);
    100         }
    101     }
    102     {
    103         std::unordered_multimap<int, int> c = {};
    104         LIBCPP_ASSERT(c.bucket_count() == 0);
    105         assert(c.size() == 0);
    106         assert(c.empty());
    107         assert(std::distance(c.begin(), c.end()) == 0);
    108         assert(c.load_factor() == 0);
    109         assert(c.max_load_factor() == 1);
    110     }
    111 #endif
    112 }