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

// <set>

// class multiset

// multiset& operator=(const multiset& s);

#include <set>
#include <cassert>
#include <iterator>

#include "test_macros.h"
#include "../../../test_compare.h"
#include "test_allocator.h"

int main(int, char**) {
  {
    typedef int V;
    V ar[] = {1, 1, 1, 2, 2, 2, 3, 3, 3};
    typedef test_less<int> C;
    typedef test_allocator<V> A;
    std::multiset<int, C, A> mo(ar, ar + sizeof(ar) / sizeof(ar[0]), C(5), A(2));
    std::multiset<int, C, A> m(ar, ar + sizeof(ar) / sizeof(ar[0]) / 2, C(3), A(7));
    m = mo;
    assert(m.get_allocator() == A(7));
    assert(m.key_comp() == C(5));
    assert(m.size() == 9);
    assert(std::distance(m.begin(), m.end()) == 9);
    assert(*std::next(m.begin(), 0) == 1);
    assert(*std::next(m.begin(), 1) == 1);
    assert(*std::next(m.begin(), 2) == 1);
    assert(*std::next(m.begin(), 3) == 2);
    assert(*std::next(m.begin(), 4) == 2);
    assert(*std::next(m.begin(), 5) == 2);
    assert(*std::next(m.begin(), 6) == 3);
    assert(*std::next(m.begin(), 7) == 3);
    assert(*std::next(m.begin(), 8) == 3);

    assert(mo.get_allocator() == A(2));
    assert(mo.key_comp() == C(5));
    assert(mo.size() == 9);
    assert(std::distance(mo.begin(), mo.end()) == 9);
    assert(*std::next(mo.begin(), 0) == 1);
    assert(*std::next(mo.begin(), 1) == 1);
    assert(*std::next(mo.begin(), 2) == 1);
    assert(*std::next(mo.begin(), 3) == 2);
    assert(*std::next(mo.begin(), 4) == 2);
    assert(*std::next(mo.begin(), 5) == 2);
    assert(*std::next(mo.begin(), 6) == 3);
    assert(*std::next(mo.begin(), 7) == 3);
    assert(*std::next(mo.begin(), 8) == 3);
  }
  {
    typedef int V;
    const V ar[] = {1, 1, 1, 2, 2, 2, 3, 3, 3};
    std::multiset<int> m(ar, ar + sizeof(ar) / sizeof(ar[0]));
    std::multiset<int>* p = &m;
    m                     = *p;
    assert(m.size() == 9);
    assert(std::equal(m.begin(), m.end(), ar));
  }
  {
    typedef int V;
    V ar[] = {1, 1, 1, 2, 2, 2, 3, 3, 3};
    typedef test_less<int> C;
    typedef other_allocator<V> A;
    std::multiset<int, C, A> mo(ar, ar + sizeof(ar) / sizeof(ar[0]), C(5), A(2));
    std::multiset<int, C, A> m(ar, ar + sizeof(ar) / sizeof(ar[0]) / 2, C(3), A(7));
    m = mo;
    assert(m.get_allocator() == A(2));
    assert(m.key_comp() == C(5));
    assert(m.size() == 9);
    assert(std::distance(m.begin(), m.end()) == 9);
    assert(*std::next(m.begin(), 0) == 1);
    assert(*std::next(m.begin(), 1) == 1);
    assert(*std::next(m.begin(), 2) == 1);
    assert(*std::next(m.begin(), 3) == 2);
    assert(*std::next(m.begin(), 4) == 2);
    assert(*std::next(m.begin(), 5) == 2);
    assert(*std::next(m.begin(), 6) == 3);
    assert(*std::next(m.begin(), 7) == 3);
    assert(*std::next(m.begin(), 8) == 3);

    assert(mo.get_allocator() == A(2));
    assert(mo.key_comp() == C(5));
    assert(mo.size() == 9);
    assert(std::distance(mo.begin(), mo.end()) == 9);
    assert(*std::next(mo.begin(), 0) == 1);
    assert(*std::next(mo.begin(), 1) == 1);
    assert(*std::next(mo.begin(), 2) == 1);
    assert(*std::next(mo.begin(), 3) == 2);
    assert(*std::next(mo.begin(), 4) == 2);
    assert(*std::next(mo.begin(), 5) == 2);
    assert(*std::next(mo.begin(), 6) == 3);
    assert(*std::next(mo.begin(), 7) == 3);
    assert(*std::next(mo.begin(), 8) == 3);
  }

  return 0;
}