//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// UNSUPPORTED: c++03, c++11

// <unordered_set>

// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
//           class Alloc = allocator<Value>>
// class unordered_multiset

// unordered_multiset(size_type n, const allocator_type& alloc);

#include <unordered_set>
#include <cassert>
#include <iterator>

#include "test_macros.h"
#include "../../../NotConstructible.h"
#include "../../../test_compare.h"
#include "../../../test_hash.h"
#include "test_allocator.h"
#include "min_allocator.h"

template <class Allocator>
void test(const Allocator& alloc) {
  typedef std::
      unordered_multiset<NotConstructible, test_hash<NotConstructible>, test_equal_to<NotConstructible>, Allocator>
          C;
  C c(7, alloc);
  LIBCPP_ASSERT(c.bucket_count() == 7);
  assert(c.hash_function() == test_hash<NotConstructible>());
  assert(c.key_eq() == test_equal_to<NotConstructible>());
  assert(c.get_allocator() == alloc);
  assert(c.size() == 0);
  assert(c.empty());
  assert(std::distance(c.begin(), c.end()) == 0);
  assert(c.load_factor() == 0);
  assert(c.max_load_factor() == 1);
}

int main(int, char**) {
  test(test_allocator<NotConstructible>(10));
  test(min_allocator<NotConstructible>());
  test(explicit_allocator<NotConstructible>());

  return 0;
}
