//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

// <unordered_map>

// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
//           class Alloc = allocator<pair<const Key, T>>>
// class unordered_multimap

// iterator       begin()        {return __table_.begin();}
// iterator       end()          {return __table_.end();}
// const_iterator begin()  const {return __table_.begin();}
// const_iterator end()    const {return __table_.end();}
// const_iterator cbegin() const {return __table_.begin();}
// const_iterator cend()   const {return __table_.end();}

#include <unordered_map>
#include <string>
#include <cassert>

#include "test_macros.h"

int main(int, char**) {
  {
    typedef std::unordered_multimap<int, std::string> C;
    typedef std::pair<int, std::string> P;
    P a[] = {
        P(1, "one"),
        P(2, "two"),
        P(3, "three"),
        P(4, "four"),
        P(1, "four"),
        P(2, "four"),
    };
    C c(a, a + sizeof(a) / sizeof(a[0]));
    LIBCPP_ASSERT(c.bucket_count() == 7);
    assert(c.size() == 6);
    assert(std::distance(c.begin(), c.end()) == c.size());
    assert(std::distance(c.cbegin(), c.cend()) == c.size());
    C::iterator i = c.begin();
    i->second     = "ONE";
    assert(i->second == "ONE");
    i->first = 2;
  }
  {
    typedef std::unordered_multimap<int, std::string> C;
    typedef std::pair<int, std::string> P;
    P a[] = {
        P(1, "one"),
        P(2, "two"),
        P(3, "three"),
        P(4, "four"),
        P(1, "four"),
        P(2, "four"),
    };
    const C c(a, a + sizeof(a) / sizeof(a[0]));
    LIBCPP_ASSERT(c.bucket_count() == 7);
    assert(c.size() == 6);
    assert(std::distance(c.begin(), c.end()) == c.size());
    assert(std::distance(c.cbegin(), c.cend()) == c.size());
  }

  return 0;
}