libcxx/test/std/containers/unord/unord.map/max_bucket_count.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 // size_type max_bucket_count() const;
  16
  17 #include <unordered_map>
  18 #include <string>
  19 #include <cassert>
  20
  21 #include "test_macros.h"
  22 #include "min_allocator.h"
  23
  24 int main(int, char**)
  25 {
  26     {
  27         typedef std::unordered_map<int, std::string> C;
  28         const C c;
  29         assert(c.max_bucket_count() > 0);
  30     }
  31 #if TEST_STD_VER >= 11
  32     {
  33         typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
  34                             min_allocator<std::pair<const int, std::string>>> C;
  35         const C c;
  36         assert(c.max_bucket_count() > 0);
  37     }
  38 #endif
  39
  40   return 0;
  41 }