Class CasedString

tests/catch.h:1044–1064

        inline std::string makeString( const char* str ) { return str ? std::string( str ) : std::string(); }

        struct CasedString
        {
            CasedString( std::string const& str, CaseSensitive::Choice caseSensitivity )
            :   m_caseSensitivity( caseSensitivity ),
                m_str( adjustString( str ) )
            {}
            std::string adjustString( std::string const& str ) const {
                return m_caseSensitivity == CaseSensitive::No
                    ? toLower( str )
                    : str;

            }
            std::string toStringSuffix() const
            {
                return m_caseSensitivity == CaseSensitive::No
                    ? " (case insensitive)"
                    : "";
            }
            CaseSensitive::Choice m_caseSensitivity;
            std::string m_str;
        };

        struct Equals : MatcherImpl<Equals, std::string> {
            Equals( std::string const& str, CaseSensitive::Choice caseSensitivity = CaseSensitive::Yes )