123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118 |
- /*
- Copyright (c) Marshall Clow 2011-2012.
- 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/cxx11/copy_n.hpp>
- #include <boost/algorithm/cxx14/equal.hpp>
- #include <boost/algorithm/cxx11/all_of.hpp>
- #include "iterator_test.hpp"
- #define BOOST_TEST_MAIN
- #include <boost/test/unit_test.hpp>
- #include <string>
- #include <iostream>
- #include <vector>
- #include <list>
- namespace ba = boost::algorithm;
- // namespace ba = boost;
- BOOST_CXX14_CONSTEXPR bool is_zero( int v ) { return v == 0; }
- template <typename Container>
- void test_sequence ( Container const &c ) {
- typedef typename Container::value_type value_type;
- std::vector<value_type> v;
-
- // Copy zero elements
- v.clear ();
- ba::copy_n ( c.begin (), 0, back_inserter ( v ));
- BOOST_CHECK ( v.size () == 0 );
- ba::copy_n ( c.begin (), 0U, back_inserter ( v ));
- BOOST_CHECK ( v.size () == 0 );
- if ( c.size () > 0 ) {
- // Just one element
- v.clear ();
- ba::copy_n ( c.begin (), 1, back_inserter ( v ));
- BOOST_CHECK ( v.size () == 1 );
- BOOST_CHECK ( v[0] == *c.begin ());
-
- v.clear ();
- ba::copy_n ( c.begin (), 1U, back_inserter ( v ));
- BOOST_CHECK ( v.size () == 1 );
- BOOST_CHECK ( v[0] == *c.begin ());
- // Half the elements
- v.clear ();
- ba::copy_n ( c.begin (), c.size () / 2, back_inserter ( v ));
- BOOST_CHECK ( v.size () == c.size () / 2);
- BOOST_CHECK ( std::equal ( v.begin (), v.end (), c.begin ()));
- // Half the elements + 1
- v.clear ();
- ba::copy_n ( c.begin (), c.size () / 2 + 1, back_inserter ( v ));
- BOOST_CHECK ( v.size () == c.size () / 2 + 1 );
- BOOST_CHECK ( std::equal ( v.begin (), v.end (), c.begin ()));
-
- // All the elements
- v.clear ();
- ba::copy_n ( c.begin (), c.size (), back_inserter ( v ));
- BOOST_CHECK ( v.size () == c.size ());
- BOOST_CHECK ( std::equal ( v.begin (), v.end (), c.begin ()));
- }
- }
- BOOST_CXX14_CONSTEXPR inline bool test_constexpr() {
- const size_t sz = 64;
- int in_data[sz] = {0};
- bool res = true;
-
- const int* from = in_data;
- const int* to = in_data + sz;
-
- int out_data[sz] = {0};
- int* out = out_data;
-
- out = ba::copy_n ( from, 0, out ); // Copy none
- res = (res && out == out_data && ba::all_of(out, out + sz, is_zero));
- out = ba::copy_n ( from, sz, out ); // Copy all
- res = (res && out == out_data + sz
- && ba::equal( input_iterator<const int *>(out_data), input_iterator<const int *>(out_data + sz),
- input_iterator<const int *>(from), input_iterator<const int *>(to)));
-
- return res;
- }
-
-
- void test_sequence1 () {
- std::vector<int> v;
- for ( int i = 5; i < 15; ++i )
- v.push_back ( i );
- test_sequence ( v );
-
- BOOST_CXX14_CONSTEXPR bool constexpr_res = test_constexpr();
- BOOST_CHECK(constexpr_res);
-
- std::list<int> l;
- for ( int i = 25; i > 15; --i )
- l.push_back ( i );
- test_sequence ( l );
- }
- BOOST_AUTO_TEST_CASE( test_main )
- {
- test_sequence1 ();
- }
|