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/*
Copyright (c) Marshall Clow 2013.
Distributed under 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)
For more information, see http://www.boost.org
*/
#include <boost/config.hpp>
#include <boost/algorithm/cxx17/for_each_n.hpp>
#include "iterator_test.hpp"
#define BOOST_TEST_MAIN
#include <boost/test/unit_test.hpp>
namespace ba = boost::algorithm;
struct for_each_test
{
for_each_test() {}
static int count;
void operator()(int& i) {++i; ++count;}
};
int for_each_test::count = 0;
void test_for_each_n ()
{
typedef input_iterator<int*> Iter;
int ia[] = {0, 1, 2, 3, 4, 5};
const unsigned s = sizeof(ia)/sizeof(ia[0]);
{
for_each_test::count = 0;
Iter it = ba::for_each_n(Iter(ia), 0, for_each_test());
BOOST_CHECK(it == Iter(ia));
BOOST_CHECK(for_each_test::count == 0);
}
{
for_each_test::count = 0;
Iter it = ba::for_each_n(Iter(ia), s, for_each_test());
BOOST_CHECK(it == Iter(ia+s));
BOOST_CHECK(for_each_test::count == s);
for (unsigned i = 0; i < s; ++i)
BOOST_CHECK(ia[i] == static_cast<int>(i+1));
}
{
for_each_test::count = 0;
Iter it = ba::for_each_n(Iter(ia), 1, for_each_test());
BOOST_CHECK(it == Iter(ia+1));
BOOST_CHECK(for_each_test::count == 1);
for (unsigned i = 0; i < 1; ++i)
BOOST_CHECK(ia[i] == static_cast<int>(i+2));
}
}
BOOST_AUTO_TEST_CASE( test_main )
{
test_for_each_n ();
}
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