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- // Boost.Range library
- //
- // Copyright Neil Groves 2014. 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/
- //
- // Credits:
- // Jurgen Hunold provided a test case that demonstrated that the range adaptors
- // were producing iterators that were not default constructible. This became
- // symptomatic after enabling concept checking assertions. This test is a
- // lightly modified version of his supplied code to ensure that his use case
- // never breaks again. (hopefully!)
- //
- #include <boost/range/adaptor/transformed.hpp>
- #include <boost/range/adaptor/filtered.hpp>
- #include <boost/range/algorithm/copy.hpp>
- #include <boost/bind.hpp>
- #include <boost/test/test_tools.hpp>
- #include <boost/test/unit_test.hpp>
- #include <vector>
- #include <set>
- namespace boost_range_test
- {
- namespace
- {
- class foo
- {
- public:
- static foo from_string(const std::string& source)
- {
- foo f;
- f.m_valid = true;
- f.m_value = 0u;
- for (std::string::const_iterator it = source.begin();
- it != source.end(); ++it)
- {
- f.m_value += *it;
- if ((*it < 'a') || (*it > 'z'))
- f.m_valid = false;
- }
- return f;
- }
- bool is_valid() const
- {
- return m_valid;
- }
- bool operator<(const foo& other) const
- {
- return m_value < other.m_value;
- }
- bool operator==(const foo& other) const
- {
- return m_value == other.m_value && m_valid == other.m_valid;
- }
- bool operator!=(const foo& other) const
- {
- return !operator==(other);
- }
- friend inline std::ostream& operator<<(std::ostream& out, const foo& obj)
- {
- out << "{value=" << obj.m_value
- << ", valid=" << std::boolalpha << obj.m_valid << "}\n";
- return out;
- }
- private:
- boost::uint64_t m_value;
- bool m_valid;
- };
- void chained_adaptors_test()
- {
- std::vector<std::string> sep;
- sep.push_back("AB");
- sep.push_back("ab");
- sep.push_back("aghj");
- std::set<foo> foos;
- boost::copy(sep
- | boost::adaptors::transformed(boost::bind(&foo::from_string, _1))
- | boost::adaptors::filtered(boost::bind(&foo::is_valid, _1)),
- std::inserter(foos, foos.end()));
- std::vector<foo> reference;
- reference.push_back(foo::from_string("ab"));
- reference.push_back(foo::from_string("aghj"));
- BOOST_CHECK_EQUAL_COLLECTIONS(
- reference.begin(), reference.end(),
- foos.begin(), foos.end());
- }
- } // anonymous namespace
- } // namespace boost_range_test
- boost::unit_test::test_suite*
- init_unit_test_suite(int argc, char* argv[])
- {
- boost::unit_test::test_suite* test
- = BOOST_TEST_SUITE( "RangeTestSuite.adaptor.chained adaptors" );
- test->add(BOOST_TEST_CASE( boost_range_test::chained_adaptors_test));
- return test;
- }
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