#include <boost/date_time/gregorian/gregorian.hpp>
#include <boost/date_time/gregorian/greg_facet.hpp>
#include <boost/test/unit_test.hpp>
#include <sstream>
#include <iostream>

namespace {

boost::gregorian::date to_greg_date(const std::string& _facet_form, const std::string& _date_string )
{
		std::stringstream  ssDate;
		boost::gregorian::date_input_facet*    date_input_facet(new boost::gregorian::date_input_facet(_facet_form));
		ssDate.imbue(std::locale(ssDate.getloc(), date_input_facet));

		boost::gregorian::date d;

		ssDate << _date_string; 
		ssDate >> d;

		return d;
}

} // anonymous namespace

void simple_gregorian_date_facet_test()
{
	using namespace boost::gregorian;
	boost::gregorian::date d07jan29(2007,Jan,29);

    BOOST_CHECK_EQUAL( to_greg_date("%Y/%m/%d","2007/01/29") , d07jan29);
	BOOST_CHECK_EQUAL( to_greg_date("%m/%d/%Y","01/29/2007") , d07jan29);
	BOOST_CHECK_EQUAL( to_greg_date("%d/%m/%Y","29/01/2007") , d07jan29);
	BOOST_CHECK_EQUAL( to_greg_date("%Y/%d/%m","2007/29/01") , d07jan29);
	BOOST_CHECK_EQUAL( to_greg_date("%d/%Y/%m","29/2007/01") , d07jan29);
	BOOST_CHECK_EQUAL( to_greg_date("%m/%Y/%d","01/2007/29") , d07jan29);
}

using boost::unit_test::test_suite;

test_suite* init_unit_test_suite(int argc, char* argv[])
{
    test_suite* test = BOOST_TEST_SUITE("simple_gregorian_date_facet_test");
    test->add( BOOST_TEST_CASE( &simple_gregorian_date_facet_test ) );
    return test;
}