add test hooks

handler.go

@@ -559,6 +559,7 @@ func (h *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	if r.Body != nil {
 		var buf []byte
 		buf, err = io.ReadAll(r.Body)
+		r.Body.Close()
 		if err != nil && err != io.EOF {
 			h.errorHandler(ctx, handler, w, r, err, http.StatusInternalServerError)
 			return

util_test.go

@@ -3,6 +3,9 @@ package http
 import (
 	"bytes"
 	"context"
+	"fmt"
+	"go.unistack.org/micro/v3/options"
+	"go.unistack.org/micro/v3/server"
 	"net/http"
 	"strings"
 	"testing"
@@ -54,3 +57,41 @@ func TestFillrequest(t *testing.T) {
 		t.Fatalf("FillRequest error: %#+v", req)
 	}
 }
+
+func Test_Hook(t *testing.T) {
+	opts := server.Options{}
+
+	var fn server.HandlerFunc = func(fctx context.Context, req server.Request, rsp interface{}) (err error) {
+		fmt.Println("1")
+		return nil
+	}
+
+	var fn2 server.HandlerWrapper = func(server.HandlerFunc) server.HandlerFunc {
+		return func(ctx context.Context, req server.Request, rsp interface{}) error {
+			fmt.Println("2")
+			return nil
+		}
+	}
+	var fn3 server.HandlerWrapper = func(server.HandlerFunc) server.HandlerFunc {
+		return func(ctx context.Context, req server.Request, rsp interface{}) error {
+			fmt.Println("3")
+			return nil
+		}
+	}
+	var fn4 server.HandlerWrapper = func(server.HandlerFunc) server.HandlerFunc {
+		return func(ctx context.Context, req server.Request, rsp interface{}) error {
+			fmt.Println("4")
+			return nil
+		}
+	}
+
+	opts.Hooks = append(opts.Hooks, fn2, fn3, fn4)
+
+	opts.Hooks.EachNext(func(hook options.Hook) {
+		if h, ok := hook.(server.HandlerWrapper); ok {
+			fn = h(fn)
+		}
+	})
+
+	fn(nil, nil, nil)
+}