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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/assign.hpp>
- #include <boost/range/algorithm/permutation.hpp>
- #include <boost/test/test_tools.hpp>
- #include <boost/test/unit_test.hpp>
- #include <algorithm>
- #include <deque>
- #include <functional>
- #include <list>
- #include <vector>
- namespace boost
- {
- namespace
- {
- template<class Container>
- void test_next_permutation_impl(const Container& cont)
- {
- Container reference(cont);
- Container test(cont);
- const bool reference_ret
- = std::next_permutation(reference.begin(), reference.end());
- const bool test_ret = boost::next_permutation(test);
- BOOST_CHECK( reference_ret == test_ret );
- BOOST_CHECK_EQUAL_COLLECTIONS(
- reference.begin(), reference.end(),
- test.begin(), test.end()
- );
-
- test = cont;
-
- BOOST_CHECK( test_ret == boost::next_permutation(boost::make_iterator_range(test)) );
-
- BOOST_CHECK_EQUAL_COLLECTIONS(
- reference.begin(), reference.end(),
- test.begin(), test.end()
- );
- }
- template<class Container, class BinaryPredicate>
- void test_next_permutation_pred_impl(const Container& cont,
- BinaryPredicate pred)
- {
- Container reference(cont);
- Container test(cont);
- const bool reference_ret
- = std::next_permutation(reference.begin(), reference.end(),
- pred);
- const bool test_ret
- = boost::next_permutation(test, pred);
- BOOST_CHECK( reference_ret == test_ret );
- BOOST_CHECK_EQUAL_COLLECTIONS(
- reference.begin(), reference.end(),
- test.begin(), test.end()
- );
-
- test = cont;
-
- BOOST_CHECK( test_ret == boost::next_permutation(boost::make_iterator_range(test), pred) );
-
- BOOST_CHECK_EQUAL_COLLECTIONS(
- reference.begin(), reference.end(),
- test.begin(), test.end()
- );
- }
- template<class Container>
- void test_next_permutation_(const Container& cont)
- {
- test_next_permutation_impl(cont);
- test_next_permutation_pred_impl(cont, std::less<int>());
- test_next_permutation_pred_impl(cont, std::greater<int>());
- }
- template<class Container>
- void run_tests()
- {
- using namespace boost::assign;
- Container cont;
- test_next_permutation_(cont);
- cont.clear();
- cont += 1;
- test_next_permutation_(cont);
- cont.clear();
- cont += 1,2,3,4,5,6,7,8,9;
- test_next_permutation_(cont);
- }
- void test_next_permutation()
- {
- run_tests< std::vector<int> >();
- run_tests< std::list<int> >();
- run_tests< std::deque<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.next_permutation" );
- test->add( BOOST_TEST_CASE( &boost::test_next_permutation ) );
- return test;
- }
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