Function convertUnstreamable

unittests/catch.hpp:773–780

        template<typename T>
        typename std::enable_if<!std::is_enum<T>::value, std::string>::type convertUnstreamable( T const& value ) {
#if !defined(CATCH_CONFIG_FALLBACK_STRINGIFIER)
            (void)value;
            return Detail::unprintableString;
#else
            return CATCH_CONFIG_FALLBACK_STRINGIFIER(value);
#endif
        }
        template<typename T>
        typename std::enable_if<std::is_enum<T>::value, std::string>::type convertUnstreamable( T const& value ) {
            return convertUnknownEnumToString( value );