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

// <map>

// class map

// template <class... Args>
//   pair<iterator, bool> emplace(Args&&... args);

#include <map>
#include <cassert>
#include <tuple>

#include "test_macros.h"
#include "../../../Emplaceable.h"
#include "DefaultOnly.h"
#include "min_allocator.h"

int main(int, char**) {
  {
    typedef std::map<int, DefaultOnly> M;
    typedef std::pair<M::iterator, bool> R;
    M m;
    assert(DefaultOnly::count == 0);
    R r = m.emplace();
    assert(r.second);
    assert(r.first == m.begin());
    assert(m.size() == 1);
    assert(m.begin()->first == 0);
    assert(m.begin()->second == DefaultOnly());
    assert(DefaultOnly::count == 1);
    r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1), std::forward_as_tuple());
    assert(r.second);
    assert(r.first == std::next(m.begin()));
    assert(m.size() == 2);
    assert(std::next(m.begin())->first == 1);
    assert(std::next(m.begin())->second == DefaultOnly());
    assert(DefaultOnly::count == 2);
    r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1), std::forward_as_tuple());
    assert(!r.second);
    assert(r.first == std::next(m.begin()));
    assert(m.size() == 2);
    assert(std::next(m.begin())->first == 1);
    assert(std::next(m.begin())->second == DefaultOnly());
    assert(DefaultOnly::count == 2);
  }
  assert(DefaultOnly::count == 0);
  {
    typedef std::map<int, Emplaceable> M;
    typedef std::pair<M::iterator, bool> R;
    M m;
    R r = m.emplace(std::piecewise_construct, std::forward_as_tuple(2), std::forward_as_tuple());
    assert(r.second);
    assert(r.first == m.begin());
    assert(m.size() == 1);
    assert(m.begin()->first == 2);
    assert(m.begin()->second == Emplaceable());
    r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1), std::forward_as_tuple(2, 3.5));
    assert(r.second);
    assert(r.first == m.begin());
    assert(m.size() == 2);
    assert(m.begin()->first == 1);
    assert(m.begin()->second == Emplaceable(2, 3.5));
    r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1), std::forward_as_tuple(2, 3.5));
    assert(!r.second);
    assert(r.first == m.begin());
    assert(m.size() == 2);
    assert(m.begin()->first == 1);
    assert(m.begin()->second == Emplaceable(2, 3.5));
  }
  {
    typedef std::map<int, double> M;
    typedef std::pair<M::iterator, bool> R;
    M m;
    R r = m.emplace(M::value_type(2, 3.5));
    assert(r.second);
    assert(r.first == m.begin());
    assert(m.size() == 1);
    assert(m.begin()->first == 2);
    assert(m.begin()->second == 3.5);
  }
  {
    typedef std::map<int, DefaultOnly, std::less<int>, min_allocator<std::pair<const int, DefaultOnly>>> M;
    typedef std::pair<M::iterator, bool> R;
    M m;
    assert(DefaultOnly::count == 0);
    R r = m.emplace();
    assert(r.second);
    assert(r.first == m.begin());
    assert(m.size() == 1);
    assert(m.begin()->first == 0);
    assert(m.begin()->second == DefaultOnly());
    assert(DefaultOnly::count == 1);
    r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1), std::forward_as_tuple());
    assert(r.second);
    assert(r.first == std::next(m.begin()));
    assert(m.size() == 2);
    assert(std::next(m.begin())->first == 1);
    assert(std::next(m.begin())->second == DefaultOnly());
    assert(DefaultOnly::count == 2);
    r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1), std::forward_as_tuple());
    assert(!r.second);
    assert(r.first == std::next(m.begin()));
    assert(m.size() == 2);
    assert(std::next(m.begin())->first == 1);
    assert(std::next(m.begin())->second == DefaultOnly());
    assert(DefaultOnly::count == 2);
  }
  assert(DefaultOnly::count == 0);
  {
    typedef std::map<int, Emplaceable, std::less<int>, min_allocator<std::pair<const int, Emplaceable>>> M;
    typedef std::pair<M::iterator, bool> R;
    M m;
    R r = m.emplace(std::piecewise_construct, std::forward_as_tuple(2), std::forward_as_tuple());
    assert(r.second);
    assert(r.first == m.begin());
    assert(m.size() == 1);
    assert(m.begin()->first == 2);
    assert(m.begin()->second == Emplaceable());
    r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1), std::forward_as_tuple(2, 3.5));
    assert(r.second);
    assert(r.first == m.begin());
    assert(m.size() == 2);
    assert(m.begin()->first == 1);
    assert(m.begin()->second == Emplaceable(2, 3.5));
    r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1), std::forward_as_tuple(2, 3.5));
    assert(!r.second);
    assert(r.first == m.begin());
    assert(m.size() == 2);
    assert(m.begin()->first == 1);
    assert(m.begin()->second == Emplaceable(2, 3.5));
  }
  {
    typedef std::map<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
    typedef std::pair<M::iterator, bool> R;
    M m;
    R r = m.emplace(M::value_type(2, 3.5));
    assert(r.second);
    assert(r.first == m.begin());
    assert(m.size() == 1);
    assert(m.begin()->first == 2);
    assert(m.begin()->second == 3.5);
  }

  return 0;
}
