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

// <list>

// void merge(list& x); // constexpr since C++26
// If (addressof(x) == this) does nothing; otherwise ...

#include <list>
#include <cassert>

#include "test_macros.h"
#include "min_allocator.h"

TEST_CONSTEXPR_CXX26 bool test() {
  {
    int a1[] = {1, 3, 7, 9, 10};
    int a2[] = {0, 2, 4, 5, 6, 8, 11};
    int a3[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11};
    std::list<int> c1(a1, a1 + sizeof(a1) / sizeof(a1[0]));
    std::list<int> c2(a2, a2 + sizeof(a2) / sizeof(a2[0]));
    c1.merge(c2);
    assert(c1 == std::list<int>(a3, a3 + sizeof(a3) / sizeof(a3[0])));
    assert(c2.empty());
  }

  {
    int a1[] = {1, 3, 7, 9, 10};
    std::list<int> c1(a1, a1 + sizeof(a1) / sizeof(a1[0]));
    c1.merge(c1);
    assert((c1 == std::list<int>(a1, a1 + sizeof(a1) / sizeof(a1[0]))));
  }

#if TEST_STD_VER >= 11
  {
    int a1[] = {1, 3, 7, 9, 10};
    int a2[] = {0, 2, 4, 5, 6, 8, 11};
    int a3[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11};
    std::list<int, min_allocator<int>> c1(a1, a1 + sizeof(a1) / sizeof(a1[0]));
    std::list<int, min_allocator<int>> c2(a2, a2 + sizeof(a2) / sizeof(a2[0]));
    c1.merge(c2);
    assert((c1 == std::list<int, min_allocator<int>>(a3, a3 + sizeof(a3) / sizeof(a3[0]))));
    assert(c2.empty());
  }
#endif

  return true;
}

int main(int, char**) {
  assert(test());
#if TEST_STD_VER >= 26
  static_assert(test());
#endif

  return 0;
}
