//===----------------------------------------------------------------------===//
//
// Part of libcu++, the C++ Standard Library for your entire system,
// under the Apache License v2.0 with LLVM Exceptions.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// SPDX-FileCopyrightText: Copyright (c) 2023 NVIDIA CORPORATION & AFFILIATES.
//
//===----------------------------------------------------------------------===//

// Modifications Copyright (c) 2024-2025 Advanced Micro Devices, Inc.
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// UNSUPPORTED: hipcc, hiprtc
// NOTE(HIP): This test includes the header cuda/std/vector which does not exist.
// HIPCC gives the correct error: cuda/std/string file not found.
// However, other errors are expected, consider the expected-error. 
// We found _LIBCUDACXX_HAS_VECTOR guard in other tests that include the header, 
// indicating that the header is not implemented yet. 
// <cuda/std/array>

// bool operator==(array<T, N> const&, array<T, N> const&);
// bool operator!=(array<T, N> const&, array<T, N> const&);
// bool operator<(array<T, N> const&, array<T, N> const&);
// bool operator<=(array<T, N> const&, array<T, N> const&);
// bool operator>(array<T, N> const&, array<T, N> const&);
// bool operator>=(array<T, N> const&, array<T, N> const&);

#include <cuda/std/array>
#include <cuda/std/cassert>
#include <cuda/std/vector>

#include "test_macros.h"

template <class Array>
void test_compare(const Array& LHS, const Array& RHS)
{
  typedef cuda::std::vector<typename Array::value_type> Vector;
  const Vector LHSV(LHS.begin(), LHS.end());
  const Vector RHSV(RHS.begin(), RHS.end());
  assert((LHS == RHS) == (LHSV == RHSV));
  assert((LHS != RHS) == (LHSV != RHSV));
  assert((LHS < RHS) == (LHSV < RHSV));
  assert((LHS <= RHS) == (LHSV <= RHSV));
  assert((LHS > RHS) == (LHSV > RHSV));
  assert((LHS >= RHS) == (LHSV >= RHSV));
}

template <int Dummy>
struct NoCompare
{};

int main(int, char**)
{
  {
    typedef NoCompare<0> T;
    typedef cuda::std::array<T, 3> C;
    C c1 = {{}};
    // expected-error@*:* 2 {{invalid operands to binary expression}}
    TEST_IGNORE_NODISCARD(c1 == c1);
    TEST_IGNORE_NODISCARD(c1 < c1);
  }
  {
    typedef NoCompare<1> T;
    typedef cuda::std::array<T, 3> C;
    C c1 = {{}};
    // expected-error@*:* 2 {{invalid operands to binary expression}}
    TEST_IGNORE_NODISCARD(c1 != c1);
    TEST_IGNORE_NODISCARD(c1 > c1);
  }
  {
    typedef NoCompare<2> T;
    typedef cuda::std::array<T, 0> C;
    C c1 = {{}};
    // expected-error@*:* 2 {{invalid operands to binary expression}}
    TEST_IGNORE_NODISCARD(c1 == c1);
    TEST_IGNORE_NODISCARD(c1 < c1);
  }

  return 0;
}