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// Copyright (C) 2020-2022 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 <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::forward_iterator_wrapper;
namespace ranges = std::ranges;
void
test01()
{
const int c[6] = { 1, 2, 3, 4, 5, 6 };
{
int x[6];
int a = 1;
VERIFY( ranges::generate(x, [&] { return a++; }) == x+6 );
VERIFY( ranges::equal(x, c) );
}
{
int x[6];
int a = 1;
test_container<int, forward_iterator_wrapper> cx(x);
VERIFY( ranges::generate(cx, [&] { return a++; }) == cx.end() );
VERIFY( ranges::equal(cx, c) );
}
{
int x[6];
int a = 1;
test_range<int, output_iterator_wrapper> rx(x);
VERIFY( ranges::generate(rx, [&] { return a++; }) == rx.end() );
VERIFY( ranges::equal(x, c) );
}
}
constexpr bool
test02()
{
const int c[6] = { 1, 2, 3, 4, 5, 6 };
int x[6];
int a = 1;
ranges::generate(x, [&] { return a++; });
return ranges::equal(x, c);
}
int
main()
{
test01();
static_assert(test02());
}
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