libcxx/test/std/containers/unord/unord.map/contains.transparent.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // <unordered_map>
  10
  11 // template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
  12 //           class Alloc = allocator<pair<const Key, T>>>
  13 // class unordered_map
  14
  15 // template <typename K>
  16 // bool contains(const K& x) const;
  17
  18 // UNSUPPORTED: c++03, c++11, c++14, c++17
  19
  20 #include <unordered_map>
  21 #include "test_transparent_unordered.h"
  22
  23 int main(int, char**)
  24 {
  25     using key_type = StoredType<int>;
  26     using ilist_type = std::initializer_list<std::pair<const key_type, int> >;
  27
  28     {
  29       // Make sure conversions don't happen for transparent non-final hasher and key_equal
  30       using map_type = const unord_map_type<std::unordered_map, transparent_hash, std::equal_to<> >;
  31       test_transparent_contains<map_type>(ilist_type{{1, 2}, {2, 3}});
  32     }
  33
  34     {
  35       // Make sure conversions don't happen for transparent final hasher and key_equal
  36       using map_type = const unord_map_type<std::unordered_map, transparent_hash_final, transparent_equal_final>;
  37       test_transparent_contains<map_type>(ilist_type{{1, 2}, {2, 3}});
  38     }
  39
  40     {
  41       // Make sure conversions do happen for non-transparent hasher
  42       using map_type = const unord_map_type<std::unordered_map, non_transparent_hash,
  43                                        std::equal_to<> >;
  44       test_non_transparent_contains<map_type>(ilist_type{{1, 2}, {2, 3}});
  45     }
  46
  47     {
  48       // Make sure conversions do happen for non-transparent key_equal
  49       using map_type = const unord_map_type<std::unordered_map, transparent_hash,
  50                                        std::equal_to<key_type> >;
  51       test_non_transparent_contains<map_type>(ilist_type{{1, 2}, {2, 3}});
  52     }
  53
  54     {
  55       // Make sure conversions do happen for both non-transparent hasher and key_equal
  56       using map_type = const unord_map_type<std::unordered_map, non_transparent_hash,
  57                                        std::equal_to<key_type> >;
  58       test_non_transparent_contains<map_type>(ilist_type{{1, 2}, {2, 3}});
  59     }
  60
  61     return 0;
  62 }