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

// <multimap>

// class multimap

// pair<iterator, iterator>             equal_range(const key_type& k);
// pair<const_iterator, const_iterator> equal_range(const key_type& k) const;

#include <map>
#include <cassert>

#include "test_macros.h"
#include "min_allocator.h"
#include "private_constructor.h"
#include "is_transparent.h"

int main(int, char**) {
  typedef std::pair<const int, double> V;
  {
    typedef std::multimap<int, double> M;
    {
      typedef std::pair<M::iterator, M::iterator> R;
      V ar[] = {V(5, 1), V(5, 2), V(5, 3), V(7, 1), V(7, 2), V(7, 3), V(9, 1), V(9, 2), V(9, 3)};
      M m(ar, ar + sizeof(ar) / sizeof(ar[0]));
      R r = m.equal_range(4);
      assert(r.first == m.begin());
      assert(r.second == m.begin());
      r = m.equal_range(5);
      assert(r.first == m.begin());
      assert(r.second == std::next(m.begin(), 3));
      r = m.equal_range(6);
      assert(r.first == std::next(m.begin(), 3));
      assert(r.second == std::next(m.begin(), 3));
      r = m.equal_range(7);
      assert(r.first == std::next(m.begin(), 3));
      assert(r.second == std::next(m.begin(), 6));
      r = m.equal_range(8);
      assert(r.first == std::next(m.begin(), 6));
      assert(r.second == std::next(m.begin(), 6));
      r = m.equal_range(9);
      assert(r.first == std::next(m.begin(), 6));
      assert(r.second == std::next(m.begin(), 9));
      r = m.equal_range(10);
      assert(r.first == m.end());
      assert(r.second == m.end());
    }
    {
      typedef std::pair<M::const_iterator, M::const_iterator> R;
      V ar[] = {V(5, 1), V(5, 2), V(5, 3), V(7, 1), V(7, 2), V(7, 3), V(9, 1), V(9, 2), V(9, 3)};
      const M m(ar, ar + sizeof(ar) / sizeof(ar[0]));
      R r = m.equal_range(4);
      assert(r.first == m.begin());
      assert(r.second == m.begin());
      r = m.equal_range(5);
      assert(r.first == m.begin());
      assert(r.second == std::next(m.begin(), 3));
      r = m.equal_range(6);
      assert(r.first == std::next(m.begin(), 3));
      assert(r.second == std::next(m.begin(), 3));
      r = m.equal_range(7);
      assert(r.first == std::next(m.begin(), 3));
      assert(r.second == std::next(m.begin(), 6));
      r = m.equal_range(8);
      assert(r.first == std::next(m.begin(), 6));
      assert(r.second == std::next(m.begin(), 6));
      r = m.equal_range(9);
      assert(r.first == std::next(m.begin(), 6));
      assert(r.second == std::next(m.begin(), 9));
      r = m.equal_range(10);
      assert(r.first == m.end());
      assert(r.second == m.end());
    }
  }
#if TEST_STD_VER >= 11
  {
    typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
    {
      typedef std::pair<M::iterator, M::iterator> R;
      V ar[] = {V(5, 1), V(5, 2), V(5, 3), V(7, 1), V(7, 2), V(7, 3), V(9, 1), V(9, 2), V(9, 3)};
      M m(ar, ar + sizeof(ar) / sizeof(ar[0]));
      R r = m.equal_range(4);
      assert(r.first == m.begin());
      assert(r.second == m.begin());
      r = m.equal_range(5);
      assert(r.first == m.begin());
      assert(r.second == std::next(m.begin(), 3));
      r = m.equal_range(6);
      assert(r.first == std::next(m.begin(), 3));
      assert(r.second == std::next(m.begin(), 3));
      r = m.equal_range(7);
      assert(r.first == std::next(m.begin(), 3));
      assert(r.second == std::next(m.begin(), 6));
      r = m.equal_range(8);
      assert(r.first == std::next(m.begin(), 6));
      assert(r.second == std::next(m.begin(), 6));
      r = m.equal_range(9);
      assert(r.first == std::next(m.begin(), 6));
      assert(r.second == std::next(m.begin(), 9));
      r = m.equal_range(10);
      assert(r.first == m.end());
      assert(r.second == m.end());
    }
    {
      typedef std::pair<M::const_iterator, M::const_iterator> R;
      V ar[] = {V(5, 1), V(5, 2), V(5, 3), V(7, 1), V(7, 2), V(7, 3), V(9, 1), V(9, 2), V(9, 3)};
      const M m(ar, ar + sizeof(ar) / sizeof(ar[0]));
      R r = m.equal_range(4);
      assert(r.first == m.begin());
      assert(r.second == m.begin());
      r = m.equal_range(5);
      assert(r.first == m.begin());
      assert(r.second == std::next(m.begin(), 3));
      r = m.equal_range(6);
      assert(r.first == std::next(m.begin(), 3));
      assert(r.second == std::next(m.begin(), 3));
      r = m.equal_range(7);
      assert(r.first == std::next(m.begin(), 3));
      assert(r.second == std::next(m.begin(), 6));
      r = m.equal_range(8);
      assert(r.first == std::next(m.begin(), 6));
      assert(r.second == std::next(m.begin(), 6));
      r = m.equal_range(9);
      assert(r.first == std::next(m.begin(), 6));
      assert(r.second == std::next(m.begin(), 9));
      r = m.equal_range(10);
      assert(r.first == m.end());
      assert(r.second == m.end());
    }
  }
#endif
#if TEST_STD_VER > 11
  {
    typedef std::multimap<int, double, std::less<>> M;

    typedef std::pair<M::iterator, M::iterator> R;
    V ar[] = {V(5, 1), V(5, 2), V(5, 3), V(7, 1), V(7, 2), V(7, 3), V(9, 1), V(9, 2), V(9, 3)};
    M m(ar, ar + sizeof(ar) / sizeof(ar[0]));
    R r = m.equal_range(4);
    assert(r.first == m.begin());
    assert(r.second == m.begin());
    r = m.equal_range(5);
    assert(r.first == m.begin());
    assert(r.second == std::next(m.begin(), 3));
    r = m.equal_range(6);
    assert(r.first == std::next(m.begin(), 3));
    assert(r.second == std::next(m.begin(), 3));
    r = m.equal_range(7);
    assert(r.first == std::next(m.begin(), 3));
    assert(r.second == std::next(m.begin(), 6));
    r = m.equal_range(8);
    assert(r.first == std::next(m.begin(), 6));
    assert(r.second == std::next(m.begin(), 6));
    r = m.equal_range(9);
    assert(r.first == std::next(m.begin(), 6));
    assert(r.second == std::next(m.begin(), 9));
    r = m.equal_range(10);
    assert(r.first == m.end());
    assert(r.second == m.end());

    r = m.equal_range(C2Int(4));
    assert(r.first == m.begin());
    assert(r.second == m.begin());
    r = m.equal_range(C2Int(5));
    assert(r.first == m.begin());
    assert(r.second == std::next(m.begin(), 3));
    r = m.equal_range(C2Int(6));
    assert(r.first == std::next(m.begin(), 3));
    assert(r.second == std::next(m.begin(), 3));
    r = m.equal_range(C2Int(7));
    assert(r.first == std::next(m.begin(), 3));
    assert(r.second == std::next(m.begin(), 6));
    r = m.equal_range(C2Int(8));
    assert(r.first == std::next(m.begin(), 6));
    assert(r.second == std::next(m.begin(), 6));
    r = m.equal_range(C2Int(9));
    assert(r.first == std::next(m.begin(), 6));
    assert(r.second == std::next(m.begin(), 9));
    r = m.equal_range(C2Int(10));
    assert(r.first == m.end());
    assert(r.second == m.end());
  }

  {
    typedef PrivateConstructor PC;
    typedef std::multimap<PC, double, std::less<>> M;
    typedef std::pair<M::iterator, M::iterator> R;

    M m;
    m.insert(std::make_pair<PC, double>(PC::make(5), 1));
    m.insert(std::make_pair<PC, double>(PC::make(5), 2));
    m.insert(std::make_pair<PC, double>(PC::make(5), 3));
    m.insert(std::make_pair<PC, double>(PC::make(7), 1));
    m.insert(std::make_pair<PC, double>(PC::make(7), 2));
    m.insert(std::make_pair<PC, double>(PC::make(7), 3));
    m.insert(std::make_pair<PC, double>(PC::make(9), 1));
    m.insert(std::make_pair<PC, double>(PC::make(9), 2));
    m.insert(std::make_pair<PC, double>(PC::make(9), 3));

    //  assert(m.size() == 9);
    R r = m.equal_range(4);
    assert(r.first == m.begin());
    assert(r.second == m.begin());
    r = m.equal_range(5);
    assert(r.first == m.begin());
    assert(r.second == std::next(m.begin(), 3));
    r = m.equal_range(6);
    assert(r.first == std::next(m.begin(), 3));
    assert(r.second == std::next(m.begin(), 3));
    r = m.equal_range(7);
    assert(r.first == std::next(m.begin(), 3));
    assert(r.second == std::next(m.begin(), 6));
    r = m.equal_range(8);
    assert(r.first == std::next(m.begin(), 6));
    assert(r.second == std::next(m.begin(), 6));
    r = m.equal_range(9);
    assert(r.first == std::next(m.begin(), 6));
    assert(r.second == std::next(m.begin(), 9));
    r = m.equal_range(10);
    assert(r.first == m.end());
    assert(r.second == m.end());
  }
#endif

  return 0;
}
