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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/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;
using namespace boost::placeholders;
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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