Fix middleware.Wrap struct

Author: andrskom

middleware/wrap.go

@@ -9,24 +9,21 @@ import (
 type Wrap struct {
 	logger *logrus.Entry
 	list   []func(http.Handler) http.Handler
-	len    int8
 }
 
 func NewWrap(logger *logrus.Logger) *Wrap {
 	return &Wrap{
 		logger: logger.WithField("component", "middlewareWrap"),
 		list:   make([]func(http.Handler) http.Handler, 0),
-		len:    0,
 	}
 }
 
 func (s *Wrap) Add(middleware func(http.Handler) http.Handler) {
 	s.list = append(s.list, middleware)
-	s.len++
 }
 
 func (s *Wrap) Do(handler http.Handler) http.Handler {
-	for i := int8(0); i < s.len; i++ {
+	for i := 0; i < len(s.list); i++ {
 		handler = s.list[i](handler)
 	}
 	return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {

middleware/wrap_test.go

@@ -15,7 +15,6 @@ func TestWrap_Add(t *testing.T) {
 		wrap.Add(func(handler http.Handler) http.Handler { return handler })
 	}
 	a.Len(wrap.list, eLen)
-	a.Equal(wrap.len, int8(eLen))
 }
 
 func TestWrap_Do(t *testing.T) {