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// Copyright (C) 2018 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 <forward_list>
#include <testsuite_hooks.h>
using test_type = std::forward_list<int>;
void
test01()
{
test_type x{1, 2, 2, 4, 4, 2, 1};
static_assert(std::is_same_v<decltype(x.unique()), test_type::size_type>);
test_type::size_type r = x.unique();
VERIFY( r == 2 );
r = x.unique();
VERIFY( r == 0 );
}
void
test02()
{
auto pred = [](int val, int prev) { return val == prev; };
test_type x{1, 2, 2, 4, 4, 2, 1};
static_assert(std::is_same_v<decltype(x.unique(pred)),
test_type::size_type>);
test_type::size_type r = x.unique(pred);
VERIFY( r == 2 );
r = x.unique(pred);
VERIFY( r == 0 );
}
int
main()
{
test01();
test02();
}
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