{

// this only tests if type traits are implemented correctly

BOOST_TEST_TRAIT_TRUE(( boost::optional_config::optional_uses_direct_storage_for<int> ));

BOOST_TEST_TRAIT_TRUE(( boost::optional_config::optional_uses_direct_storage_for<double> ));

BOOST_TEST_TRAIT_TRUE(( boost::optional_config::optional_uses_direct_storage_for<CustomizedTrivial> ));

BOOST_TEST_TRAIT_FALSE(( boost::optional_config::optional_uses_direct_storage_for<PrivDefault> ));

BOOST_TEST_TRAIT_FALSE(( boost::optional_config::optional_uses_direct_storage_for<NoDefault> ));

BOOST_TEST_TRAIT_FALSE(( boost::optional_config::optional_uses_direct_storage_for<CustDefault> ));

BOOST_TEST_TRAIT_FALSE(( boost::optional_config::optional_uses_direct_storage_for<Aggregate<int, CustDefault> > ));

BOOST_TEST_TRAIT_FALSE(( boost::optional_config::optional_uses_direct_storage_for<CustDtor> ));

BOOST_TEST_TRAIT_FALSE(( boost::optional_config::optional_uses_direct_storage_for<CustAssign> ));

BOOST_TEST_TRAIT_FALSE(( boost::optional_config::optional_uses_direct_storage_for<CustMove> ));

BOOST_TEST_TRAIT_FALSE(( boost::optional_config::optional_uses_direct_storage_for<Aggregate<int, CustMove> > ));

BOOST_TEST_TRAIT_TRUE(( boost::optional_detail::is_trivially_semiregular<int> ));

BOOST_TEST_TRAIT_TRUE(( boost::optional_detail::is_trivially_semiregular<double> ));

BOOST_TEST_TRAIT_FALSE(( boost::optional_config::optional_uses_direct_storage_for<Empty> ));

BOOST_TEST_TRAIT_FALSE(( boost::optional_config::optional_uses_direct_storage_for<Aggregate<int, double> > ));

BOOST_TEST_TRAIT_FALSE(( boost::optional_config::optional_uses_direct_storage_for<Aggregate<Aggregate<Empty, int>, double> > ));

#ifndef BOOST_OPTIONAL_DETAIL_NO_SPEC_FOR_TRIVIAL_TYPES

BOOST_TEST_TRAIT_TRUE(( boost::optional_detail::is_trivially_semiregular<Empty> ));

BOOST_TEST_TRAIT_TRUE(( boost::optional_detail::is_trivially_semiregular<Aggregate<int, double> > ));

BOOST_TEST_TRAIT_TRUE(( boost::optional_detail::is_trivially_semiregular<Aggregate<Aggregate<Empty, int>, double> > ));

#endif

BOOST_TEST_TRAIT_FALSE(( boost::optional_config::optional_uses_direct_storage_for<DeletedDefault> ));

BOOST_TEST_TRAIT_FALSE(( boost::optional_config::optional_uses_direct_storage_for<Aggregate<int, DeletedDefault> > ));

BOOST_TEST_TRAIT_FALSE(( boost::optional_detail::is_trivially_semiregular<CustDtor> ));

BOOST_TEST_TRAIT_FALSE(( boost::optional_detail::is_trivially_semiregular<CustAssign> ));

BOOST_TEST_TRAIT_FALSE(( boost::optional_detail::is_trivially_semiregular<CustMove> ));

BOOST_TEST_TRAIT_FALSE(( boost::optional_detail::is_trivially_semiregular<Aggregate<int, CustMove> > ));

{

BOOST_TEST_TRAIT_TRUE((boost::is_base_of<boost::optional_detail::tc_optional_base<int>, boost::optional<int> > ));

BOOST_TEST_TRAIT_TRUE((boost::is_base_of<boost::optional_detail::tc_optional_base<double>, boost::optional<double> > ));

BOOST_TEST_TRAIT_TRUE((boost::is_base_of<boost::optional_detail::tc_optional_base<CustomizedTrivial>, boost::optional<CustomizedTrivial> > ));

BOOST_TEST_TRAIT_FALSE((boost::is_base_of<boost::optional_detail::tc_optional_base<DeletedDefault>, boost::optional<DeletedDefault> > ));

#ifndef BOOST_OPTIONAL_DETAIL_NO_SPEC_FOR_TRIVIAL_TYPES

BOOST_TEST_TRAIT_TRUE(( boost::optional_detail::is_trivially_semiregular<boost::optional<int> > ));

BOOST_TEST_TRAIT_TRUE(( boost::optional_detail::is_trivially_semiregular<boost::optional<double> > ));

BOOST_TEST_TRAIT_TRUE(( boost::optional_detail::is_trivially_semiregular<boost::optional<CustomizedTrivial> > ));

BOOST_TEST_TRAIT_FALSE(( boost::optional_detail::is_trivially_semiregular<boost::optional<DeletedDefault> > ));

#endif

BOOST_TEST_TRAIT_FALSE(( boost::optional_detail::is_trivially_semiregular<boost::optional<Empty> > ));

BOOST_TEST_TRAIT_FALSE(( boost::optional_detail::is_trivially_semiregular<boost::optional<Aggregate<int, double> > > ));

BOOST_TEST_TRAIT_FALSE(( boost::optional_detail::is_trivially_semiregular<boost::optional<Aggregate<Aggregate<Empty, int>, double> > > ));

{

#ifndef BOOST_OPTIONAL_USES_UNION_IMPLEMENTATION

#ifndef BOOST_OPTIONAL_DETAIL_NO_DEFAULTED_MOVE_FUNCTIONS

test_type_traits();

test_trivial_copyability();

#endif

#endif

return boost::report_errors();