fixed test

redcon.go

@@ -142,7 +142,7 @@ func (c *conn) RemoteAddr() string {
 
 // Reader represents a RESP command reader.
 type reader struct {
-	r *net.TCPConn // base reader
+	r io.Reader // base reader
 	b []byte    // unprocessed bytes
 	a []byte    // static read buffer
 }
@@ -150,7 +150,7 @@ type reader struct {
 const buflen = 1024 * 8
 
 // NewReader returns a RESP command reader.
-func newReader(r *net.TCPConn) *reader {
+func newReader(r io.Reader) *reader {
 	return &reader{
 		r: r,
 		a: make([]byte, buflen),