union_cast_unittest_.h

新版本TR1的stl

#if !defined(STLSOFT_INCL_STLSOFT_CONVERSION_HPP_UNION_CAST)
# error This file cannot be directly included, and should only be included within stlsoft/conversion/union_cast.hpp
#endif /* !STLSOFT_INCL_STLSOFT_CONVERSION_HPP_UNION_CAST */

#if !defined(STLSOFT_UNITTEST)
# error This file cannot be included when not unit-testing STLSoft
#endif /* !STLSOFT_UNITTEST */

namespace unittest
{
	namespace
	{
		namespace union_cast_test_types_namespace
		{
			struct S1
			{
				uint8_t 	c1;
				uint8_t 	c2;
				uint8_t 	c3;
				uint8_t 	c4;
			};

			struct S2
			{
				uint16_t	s1;
				uint16_t	s2;
			};

		} // namespace union_cast_test_types_namespace

		ss_bool_t test_stlsoft_conversion_union_cast(unittest_reporter *r)
		{
			ss_bool_t				bSuccess	=	true;

			unittest_initialiser	init(r, "STLSoft", "conversion/union_cast", __FILE__);

			int 	i;
			void	*pv =	&i;
			short	*ps =	reinterpret_cast<short*>(&i);

			if(union_cast<short*>(pv) != ps)
			{
				r->report("union_cast failed", __LINE__);
				bSuccess = false;
			}

			{
				using namespace union_cast_test_types_namespace;

				S1		*ps1	=	NULL;
				S2		*ps2	=	union_cast<S2*>(ps1);

				STLSOFT_SUPPRESS_UNUSED(ps2);
			}

			return bSuccess;
		}

		unittest_registrar	  unittest_stlsoft_conversion_union_cast(test_stlsoft_conversion_union_cast);
	} // anonymous namespace

} // namespace unittest