#include <boost/mpl/aux_/template_arity.hpp>
#include <boost/mpl/aux_/test.hpp>
#if defined(BOOST_EXTENDED_TEMPLATE_PARAMETERS_MATCHING)
struct my {};
template< typename T1 > struct my1 {};
template< typename T1, typename T2 = void > struct my2 {};
MPL_TEST_CASE()
{
MPL_ASSERT_RELATION( (aux::template_arity<my>::value), ==, -1 );
MPL_ASSERT_RELATION( (aux::template_arity< my1<int> >::value), ==, 1 );
MPL_ASSERT_RELATION( (aux::template_arity< my2<int,long> >::value), ==, 2 );
MPL_ASSERT_RELATION( (aux::template_arity< my2<int> >::value), ==, 2 );
}
#endif