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// Copyright (C) 2020-2023 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-options "-std=gnu++2a" }
// { dg-do run { target c++2a } }
#include <algorithm>
#include <vector>
#include <testsuite_hooks.h>
#include <testsuite_iterators.h>
using __gnu_test::test_container;
using __gnu_test::test_range;
using __gnu_test::input_iterator_wrapper;
using __gnu_test::output_iterator_wrapper;
using __gnu_test::random_access_iterator_wrapper;
namespace ranges = std::ranges;
template<template<typename> typename in_wrapper,
template<typename> typename out_wrapper>
void
test01()
{
int x[] = {1,2,3,4,5,6,7};
for (int i = -1; i <= 7; i++)
{
test_range<int, in_wrapper> rx(x);
int w[7];
test_range<int, out_wrapper> rw(w);
ranges::copy_n(rx.begin(), i, rw.begin());
if (i >= 0)
VERIFY( ranges::equal(x, x+i, w, w+i) );
}
}
constexpr bool
test02()
{
int x[] = {1,2,3};
int y[2];
auto [in,out] = ranges::copy_n(x, 2, y);
return (in == x+2
&& out == y+2
&& ranges::equal(x, x+2, y, y+2));
}
int
main()
{
test01<input_iterator_wrapper,
output_iterator_wrapper>();
test01<random_access_iterator_wrapper,
output_iterator_wrapper>();
test01<random_access_iterator_wrapper,
random_access_iterator_wrapper>();
static_assert(test02());
}
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