369 lines
11 KiB
C++
369 lines
11 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Unit Test
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// Copyright (c) 2014, Oracle and/or its affiliates.
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// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
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// Licensed under the Boost Software License version 1.0.
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// http://www.boost.org/users/license.html
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#ifndef BOOST_TEST_MODULE
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#define BOOST_TEST_MODULE test_flatten_iterator
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#endif
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#include <boost/test/included/unit_test.hpp>
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#include <cstddef>
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#include <iostream>
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#include <string>
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#include <sstream>
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#include <algorithm>
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#include <iterator>
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#include <vector>
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#include <list>
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#include <boost/core/ignore_unused.hpp>
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#include <boost/mpl/if.hpp>
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#include <boost/type_traits/is_const.hpp>
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#include <boost/assign/std/vector.hpp>
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#include <boost/assign/std/list.hpp>
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#include <boost/assign/std/set.hpp>
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#include "test_iterator_common.hpp"
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#include <boost/geometry/iterators/flatten_iterator.hpp>
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using namespace boost::assign;
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template <typename InnerContainer>
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struct access_begin
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{
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typedef typename boost::mpl::if_
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<
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typename boost::is_const<InnerContainer>::type,
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typename InnerContainer::const_iterator,
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typename InnerContainer::iterator
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>::type return_type;
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static inline return_type apply(InnerContainer& inner)
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{
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return inner.begin();
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}
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};
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template <typename InnerContainer>
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struct access_end
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{
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typedef typename boost::mpl::if_
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<
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typename boost::is_const<InnerContainer>::type,
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typename InnerContainer::const_iterator,
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typename InnerContainer::iterator
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>::type return_type;
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static inline return_type apply(InnerContainer& inner)
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{
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return inner.end();
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}
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};
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template <typename NestedContainer>
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inline std::size_t number_of_elements(NestedContainer const& c)
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{
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std::size_t num_elements(0);
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for (typename NestedContainer::const_iterator outer = c.begin();
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outer != c.end(); ++outer)
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{
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num_elements += outer->size();
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}
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return num_elements;
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}
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struct test_flatten_iterator
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{
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template
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<
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typename FlattenIterator,
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typename ConstFlattenIterator,
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typename NestedContainer
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>
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static inline
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void test_using_max_element(FlattenIterator first,
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FlattenIterator beyond,
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ConstFlattenIterator const_first,
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ConstFlattenIterator const_beyond,
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NestedContainer const& c)
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{
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typedef typename std::iterator_traits
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<
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FlattenIterator
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>::value_type value_type;
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typedef typename NestedContainer::const_iterator const_outer_iterator;
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typedef typename NestedContainer::value_type inner_container;
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typedef typename inner_container::const_iterator const_inner_iterator;
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if ( first == beyond )
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{
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return;
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}
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FlattenIterator it_max = std::max_element(first, beyond);
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ConstFlattenIterator const_it_max =
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std::max_element(const_first, const_beyond);
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BOOST_CHECK( it_max == const_it_max );
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BOOST_CHECK( *it_max == *const_it_max );
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value_type old_value = *const_first;
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value_type new_value = *it_max + 1;
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*first = *it_max + 1;
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const_outer_iterator outer = c.begin();
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while ( outer->begin() == outer->end() )
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{
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++outer;
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}
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const_inner_iterator inner = outer->begin();
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BOOST_CHECK( *inner == new_value );
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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std::cout << std::endl;
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std::cout << "modified 1st element of 1st non-empty "
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<< "inner container:" << std::endl;
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print_nested_container(std::cout, c.begin(), c.end(), "nested :")
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<< std::endl;
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print_container(std::cout, first, beyond, "flattened:") << std::endl;
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#endif
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*first = old_value;
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BOOST_CHECK( *inner == old_value );
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}
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template <typename NestedContainer>
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static inline void apply(NestedContainer& c,
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std::string const& case_id,
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std::string const& container_id)
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{
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boost::ignore_unused(case_id, container_id);
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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std::stringstream sstream;
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sstream << case_id << " [" << container_id << "]";
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std::cout << "case id: " << sstream.str() << std::endl;
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#endif
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typedef typename NestedContainer::const_iterator const_outer_iterator;
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typedef typename NestedContainer::iterator outer_iterator;
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typedef typename NestedContainer::value_type inner_container;
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typedef typename inner_container::const_iterator const_inner_iterator;
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typedef typename inner_container::iterator inner_iterator;
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typedef boost::geometry::flatten_iterator
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<
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const_outer_iterator,
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const_inner_iterator,
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typename inner_container::value_type const,
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access_begin<inner_container const>,
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access_end<inner_container const>
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> const_flatten_iterator;
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typedef boost::geometry::flatten_iterator
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<
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outer_iterator,
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inner_iterator,
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typename inner_container::value_type,
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access_begin<inner_container>,
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access_end<inner_container>
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> flatten_iterator;
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typedef typename std::iterator_traits
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<
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flatten_iterator
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>::value_type value_type;
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flatten_iterator begin(c.begin(), c.end());
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flatten_iterator end(c.end());
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const_flatten_iterator const_begin(begin);
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const_flatten_iterator const_end(end);
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const_begin = begin;
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const_end = end;
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// test copying, dereferencing and element equality
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std::vector<value_type> combined;
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for (const_outer_iterator outer = c.begin();
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outer != c.end(); ++outer)
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{
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std::copy(outer->begin(), outer->end(),
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std::back_inserter(combined));
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}
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test_equality(begin, end, combined);
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test_equality(const_begin, const_end, combined);
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combined.clear();
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std::copy(begin, end, std::back_inserter(combined));
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test_equality(begin, end, combined);
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test_equality(const_begin, const_end, combined);
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combined.clear();
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std::copy(const_begin, const_end, std::back_inserter(combined));
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test_equality(begin, end, combined);
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test_equality(const_begin, const_end, combined);
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// test sizes (and std::distance)
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test_size(begin, end, combined);
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test_size(const_begin, const_end, combined);
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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print_nested_container(std::cout, c.begin(), c.end(), "nested :")
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<< std::endl;
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print_container(std::cout, begin, end, "flattened :")
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<< std::endl;
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if ( begin != end )
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{
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std::cout << "min element: "
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<< *std::min_element(begin, end)
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<< std::endl;
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std::cout << "max element: "
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<< *std::max_element(const_begin, const_end)
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<< std::endl;
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}
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#endif
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// perform reversals (std::reverse)
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test_using_reverse(begin, end, combined);
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// test std::max_element, dereferencing and value assigment
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test_using_max_element(begin, end, const_begin, const_end, c);
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// test std::count_if / std::remove_if
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test_using_remove_if(begin, end, combined);
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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std::cout << "====================" << std::endl << std::endl;
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#endif
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}
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};
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// the actual test cases -- START
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template <int CaseNumber>
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struct test_case_per_container;
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template<>
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struct test_case_per_container<0>
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{
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template <typename NestedContainer>
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static inline void apply(std::string const& case_id,
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std::string const& container_id)
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{
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NestedContainer c;
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test_flatten_iterator::apply(c, case_id, container_id);
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}
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};
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template<>
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struct test_case_per_container<1>
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{
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template <typename NestedContainer>
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static inline void apply(std::string const& case_id,
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std::string const& container_id)
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{
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NestedContainer c;
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for (int i = 0; i < 5; ++i)
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{
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c += typename NestedContainer::value_type();
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}
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test_flatten_iterator::apply(c, case_id, container_id);
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}
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};
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template<>
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struct test_case_per_container<2>
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{
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template <typename NestedContainer>
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static inline void apply(std::string const& case_id,
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std::string const& container_id)
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{
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NestedContainer c;
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typename NestedContainer::value_type ic[4];
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ic[0] += 5,4,3,2,1;
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ic[1] += 6,7,8;
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ic[2] += 9;
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ic[3] += 9,8,7,6,5;
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c += ic[0],ic[1],ic[2],ic[3];
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test_flatten_iterator::apply(c, case_id, container_id);
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}
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};
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template<>
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struct test_case_per_container<3>
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{
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template <typename NestedContainer>
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static inline void apply(std::string const& case_id,
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std::string const& container_id)
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{
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NestedContainer c;
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typename NestedContainer::value_type ic[20];
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ic[2] += 5,4,3,2,1;
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ic[3] += 6,7,8;
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ic[8] += 9;
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ic[9] += 9,8,7,6,5;
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ic[14] += 4,3,2,1;
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for (std::size_t i = 0; i < 20; ++i)
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{
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c += ic[i];
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}
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test_flatten_iterator::apply(c, case_id, container_id);
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}
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};
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// the actual test cases -- END
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template <int CaseNumber>
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inline void test_case_all_containers(std::string const& case_id)
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{
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typedef typename std::vector<std::vector<int> > VV;
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typedef typename std::vector<std::list<int> > VL;
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typedef typename std::list<std::vector<int> > LV;
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typedef typename std::list<std::list<int> > LL;
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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std::cout << std::endl << std::endl;
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#endif
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test_case_per_container<CaseNumber>::template apply<VV>(case_id, "VV");
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test_case_per_container<CaseNumber>::template apply<VL>(case_id, "VL");
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test_case_per_container<CaseNumber>::template apply<LV>(case_id, "LV");
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test_case_per_container<CaseNumber>::template apply<LL>(case_id, "LL");
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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std::cout << std::endl;
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std::cout << "********************************************************"
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<< std::endl << std::endl;
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#endif
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}
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BOOST_AUTO_TEST_CASE( test_flatten_iterator_all )
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{
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test_case_all_containers<0>("empty");
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test_case_all_containers<1>("case1");
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test_case_all_containers<2>("case2");
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test_case_all_containers<3>("case3");
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}
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