//===----------------------------------------------------------------------===//
//
// 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, c++14

// <map>

// class multimap

// node_type extract(const_iterator);

#include <map>
#include "test_macros.h"
#include "min_allocator.h"
#include "Counter.h"

template <class Container>
void test(Container& c) {
  std::size_t sz = c.size();

  auto some_key = c.cbegin()->first;

  for (auto first = c.cbegin(); first != c.cend();) {
    auto key_value                  = first->first;
    typename Container::node_type t = c.extract(first++);
    --sz;
    assert(t.key() == key_value);
    t.key() = some_key;
    assert(t.key() == some_key);
    assert(t.get_allocator() == c.get_allocator());
    assert(sz == c.size());
  }

  assert(c.size() == 0);
}

int main(int, char**) {
  {
    using map_type = std::multimap<int, int>;
    map_type m     = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};
    test(m);
  }

  {
    std::multimap<Counter<int>, Counter<int>> m = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};
    assert(Counter_base::gConstructed == 12);
    test(m);
    assert(Counter_base::gConstructed == 0);
  }

  {
    using min_alloc_map = std::multimap<int, int, std::less<int>, min_allocator<std::pair<const int, int>>>;
    min_alloc_map m     = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};
    test(m);
  }

  return 0;
}
