Method convert

ext/catch.hpp:1595–1598

#if defined(CATCH_CONFIG_CPP11_IS_ENUM)
        template<typename T>
        static std::string convert( T const& v )
        {
            return EnumStringMaker<T>::convert( v );
        }
#else
        template<typename T>
        static std::string convert( T const& ) { return unprintableString; }