libcxx/test/std/containers/unord/unord.map/find.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 // iterator find(const K& k);
  17
  18 // UNSUPPORTED: c++03, c++11, c++14, c++17
  19
  20 #include <unordered_map>
  21
  22 #include "test_transparent_unordered.h"
  23
  24 int main(int, char**)
  25 {
  26     using key_type = StoredType<int>;
  27
  28     {
  29       // Make sure conversions don't happen for transparent non-final hasher and key_equal
  30       using M = unord_map_type<std::unordered_map, transparent_hash, std::equal_to<>>;
  31       test_transparent_find<M>({{1, 2}, {2, 3}});
  32       test_transparent_find<const M>({{1, 2}, {2, 3}});
  33     }
  34
  35     {
  36       // Make sure conversions don't happen for transparent final hasher and key_equal
  37       using M = unord_map_type<std::unordered_map, transparent_hash_final, transparent_equal_final>;
  38       test_transparent_find<M>({{1, 2}, {2, 3}});
  39       test_transparent_find<const M>({{1, 2}, {2, 3}});
  40     }
  41
  42     {
  43       // Make sure conversions do happen for non-transparent hasher
  44       using M = unord_map_type<std::unordered_map, non_transparent_hash, std::equal_to<>>;
  45       test_non_transparent_find<M>({{1, 2}, {2, 3}});
  46       test_non_transparent_find<const M>({{1, 2}, {2, 3}});
  47     }
  48
  49     {
  50       // Make sure conversions do happen for non-transparent key_equal
  51       using M = unord_map_type<std::unordered_map, transparent_hash, std::equal_to<key_type>>;
  52       test_non_transparent_find<M>({{1, 2}, {2, 3}});
  53       test_non_transparent_find<const M>({{1, 2}, {2, 3}});
  54     }
  55
  56     {
  57       // Make sure conversions do happen for both non-transparent hasher and key_equal
  58       using M = unord_map_type<std::unordered_map, non_transparent_hash, std::equal_to<key_type>>;
  59       test_non_transparent_find<M>({{1, 2}, {2, 3}});
  60       test_non_transparent_find<const M>({{1, 2}, {2, 3}});
  61     }
  62
  63     return 0;
  64 }