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// Copyright Neil Groves 2009. 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)
//
//
// For more information, see http://www.boost.org/libs/range/
//
#include <boost/range/algorithm/merge.hpp>
#include <boost/test/test_tools.hpp>
#include <boost/test/unit_test.hpp>
#include <boost/assign.hpp>
#include <algorithm>
#include <functional>
#include <list>
#include <numeric>
#include <deque>
#include <vector>
namespace boost
{
namespace
{
template<class Container1, class Container2>
void test(Container1& cont1, Container2& cont2)
{
typedef BOOST_DEDUCED_TYPENAME Container1::value_type value_t;
typedef BOOST_DEDUCED_TYPENAME std::vector<value_t>::iterator iterator_t;
std::vector<value_t> reference_target( cont1.size() + cont2.size() );
iterator_t reference_it
= std::merge(cont1.begin(), cont1.end(),
cont2.begin(), cont2.end(),
reference_target.begin());
std::vector<value_t> test_target( cont1.size() + cont2.size() );
iterator_t test_it
= boost::merge(cont1, cont2, test_target.begin());
BOOST_CHECK_EQUAL(
std::distance<iterator_t>(reference_target.begin(), reference_it),
std::distance<iterator_t>(test_target.begin(), test_it)
);
BOOST_CHECK_EQUAL_COLLECTIONS(
reference_target.begin(), reference_target.end(),
test_target.begin(), test_target.end()
);
test_it = boost::merge(boost::make_iterator_range(cont1),
cont2, test_target.begin());
BOOST_CHECK_EQUAL(
std::distance<iterator_t>(reference_target.begin(), reference_it),
std::distance<iterator_t>(test_target.begin(), test_it)
);
BOOST_CHECK_EQUAL_COLLECTIONS(
reference_target.begin(), reference_target.end(),
test_target.begin(), test_target.end()
);
test_it = boost::merge(cont1, boost::make_iterator_range(cont2),
test_target.begin());
BOOST_CHECK_EQUAL(
std::distance<iterator_t>(reference_target.begin(), reference_it),
std::distance<iterator_t>(test_target.begin(), test_it)
);
BOOST_CHECK_EQUAL_COLLECTIONS(
reference_target.begin(), reference_target.end(),
test_target.begin(), test_target.end()
);
test_it = boost::merge(boost::make_iterator_range(cont1),
boost::make_iterator_range(cont2),
test_target.begin());
BOOST_CHECK_EQUAL(
std::distance<iterator_t>(reference_target.begin(), reference_it),
std::distance<iterator_t>(test_target.begin(), test_it)
);
BOOST_CHECK_EQUAL_COLLECTIONS(
reference_target.begin(), reference_target.end(),
test_target.begin(), test_target.end()
);
}
template<class Container, class BinaryPredicate>
void sort_container(Container& cont, BinaryPredicate pred)
{
typedef BOOST_DEDUCED_TYPENAME Container::value_type value_t;
std::vector<value_t> temp(cont.begin(), cont.end());
std::sort(temp.begin(), temp.end(), pred);
cont.assign(temp.begin(), temp.end());
}
template<class Container1,
class Container2,
class BinaryPredicate>
void test_pred(Container1 cont1, Container2 cont2, BinaryPredicate pred)
{
typedef BOOST_DEDUCED_TYPENAME Container1::value_type value_t;
typedef BOOST_DEDUCED_TYPENAME std::vector<value_t>::iterator iterator_t;
sort_container(cont1, pred);
sort_container(cont2, pred);
std::vector<value_t> reference_target( cont1.size() + cont2.size() );
iterator_t reference_it
= std::merge(cont1.begin(), cont1.end(),
cont2.begin(), cont2.end(),
reference_target.begin(), pred);
std::vector<value_t> test_target( cont1.size() + cont2.size() );
iterator_t test_it
= boost::merge(cont1, cont2, test_target.begin(), pred);
BOOST_CHECK_EQUAL(
std::distance(reference_target.begin(), reference_it),
std::distance(test_target.begin(), test_it)
);
BOOST_CHECK_EQUAL_COLLECTIONS(
reference_target.begin(), reference_target.end(),
test_target.begin(), test_target.end()
);
test_it = boost::merge(boost::make_iterator_range(cont1), cont2,
test_target.begin(), pred);
BOOST_CHECK_EQUAL(
std::distance(reference_target.begin(), reference_it),
std::distance(test_target.begin(), test_it)
);
BOOST_CHECK_EQUAL_COLLECTIONS(
reference_target.begin(), reference_target.end(),
test_target.begin(), test_target.end()
);
test_it = boost::merge(cont1, boost::make_iterator_range(cont2),
test_target.begin(), pred);
BOOST_CHECK_EQUAL(
std::distance(reference_target.begin(), reference_it),
std::distance(test_target.begin(), test_it)
);
BOOST_CHECK_EQUAL_COLLECTIONS(
reference_target.begin(), reference_target.end(),
test_target.begin(), test_target.end()
);
test_it = boost::merge(boost::make_iterator_range(cont1),
boost::make_iterator_range(cont2),
test_target.begin(), pred);
BOOST_CHECK_EQUAL(
std::distance(reference_target.begin(), reference_it),
std::distance(test_target.begin(), test_it)
);
BOOST_CHECK_EQUAL_COLLECTIONS(
reference_target.begin(), reference_target.end(),
test_target.begin(), test_target.end()
);
}
template<class Container1, class Container2>
void test_merge_impl(Container1& cont1, Container2& cont2)
{
test(cont1, cont2);
test_pred(cont1, cont2, std::less<int>());
test_pred(cont1, cont2, std::greater<int>());
}
template<class Container1, class Container2>
void test_merge_impl()
{
using namespace boost::assign;
Container1 cont1;
Container2 cont2;
test_merge_impl(cont1, cont2);
cont1.clear();
cont2.clear();
cont1 += 1;
test_merge_impl(cont1, cont2);
cont1.clear();
cont2.clear();
cont2 += 1;
test_merge_impl(cont1, cont2);
cont1.clear();
cont2.clear();
cont1 += 1,3,5,7,9,11,13,15,17,19;
cont2 += 2,4,6,8,10,12,14,16,18,20;
test_merge_impl(cont1, cont2);
}
void test_merge()
{
test_merge_impl< std::vector<int>, std::vector<int> >();
test_merge_impl< std::list<int>, std::list<int> >();
test_merge_impl< std::deque<int>, std::deque<int> >();
test_merge_impl< std::list<int>, std::vector<int> >();
test_merge_impl< std::vector<int>, std::list<int> >();
}
}
}
boost::unit_test::test_suite*
init_unit_test_suite(int argc, char* argv[])
{
boost::unit_test::test_suite* test
= BOOST_TEST_SUITE( "RangeTestSuite.algorithm.merge" );
test->add( BOOST_TEST_CASE( &boost::test_merge ) );
return test;
}
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