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// Range v3 library
//
// Copyright Eric Niebler 2014-present
//
// Use, modification and distribution is subject to the
// Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// Project home: https://github.com/ericniebler/range-v3
#include <range/v3/iterator/counted_iterator.hpp>
#include "../simple_test.hpp"
// iterator that models input_iterator (has void-returning postfix increment operator)
struct Iterator
{
using value_type = int;
using difference_type = int;
int counter = 0;
int operator*() const { return counter; }
Iterator& operator++() { ++counter; return *this; }
void operator++(int) { ++counter; }
bool operator==(const Iterator& rhs) const { return counter == rhs.counter; }
bool operator!=(const Iterator& rhs) const { return !(*this == rhs); }
};
int main()
{
CPP_assert(ranges::input_iterator<Iterator>);
auto cnt = ranges::counted_iterator<Iterator>(Iterator(), 1);
CHECK(*cnt == 0);
cnt++;
CHECK(cnt == ranges::default_sentinel);
return test_result();
}
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