diff --git a/server/middleware.go b/server/middleware.go
index f68ecb3..05bee28 100644
--- a/server/middleware.go
+++ b/server/middleware.go
@@ -4,6 +4,7 @@ import (
 	"container/list"
 	"encoding/json"
 	"net/http"
+	"reflect"
 	"strings"
 
 	"git.pyer.club/kingecg/gohttpd/model"
@@ -15,26 +16,41 @@ type MiddlewareLink struct {
 	*list.List
 }
 
+func IsEqualMiddleware(a, b Middleware) bool {
+	if a == nil && b == nil {
+		return true
+	}
+	if a == nil || b == nil {
+		return false
+	}
+	return reflect.ValueOf(a).Pointer() == reflect.ValueOf(b).Pointer()
+}
 func (ml *MiddlewareLink) Add(m Middleware) {
+	if m == nil {
+		return
+	}
+
 	if ml.List.Len() == 0 {
 		ml.PushBack(m)
 	} else {
+		if IsEqualMiddleware(m, Done) {
+			return
+		}
 		el := ml.Back()
 		ml.InsertBefore(m, el)
 	}
 }
 
 func (ml *MiddlewareLink) ServeHTTP(w http.ResponseWriter, r *http.Request) bool {
-	canContinue := false
+	canContinue := true
 	next := func() {
 		canContinue = true
 	}
 	for e := ml.Front(); e != nil && canContinue; e = e.Next() {
+		canContinue = false
 		e.Value.(Middleware)(w, r, next)
 		if !canContinue {
 			break
-		} else {
-			canContinue = false
 		}
 	}
 	return canContinue
diff --git a/server/middleware_test.go b/server/middleware_test.go
new file mode 100644
index 0000000..d59e43d
--- /dev/null
+++ b/server/middleware_test.go
@@ -0,0 +1,86 @@
+package server
+
+import (
+	"container/list"
+	"net/http"
+	"testing"
+)
+
+func TestNewMiddlewareLink(t *testing.T) {
+	ml := NewMiddlewareLink()
+
+	if ml == nil {
+		t.Errorf("NewMiddlewareLink() = nil, want %T", &MiddlewareLink{list.New()})
+	}
+	if ml.Len() == 0 {
+		t.Errorf("NewMiddlewareLink() returned list with length %d, want %d", 0, 1)
+	}
+}
+
+func TestMiddlewareLink_Add(t *testing.T) {
+	ml := NewMiddlewareLink()
+	element := Done
+
+	if ml.Len() != 1 {
+		t.Errorf("Add() did not add element to the list, length = %d, want %d", ml.Len(), 1)
+	}
+	ml.Add(element)
+	if ml.Len() != 1 {
+		t.Error("Should not Add Done twice")
+	}
+
+	t1 := ml.ServeHTTP(nil, nil)
+
+	if !t1 {
+		t.Error("ServeHTTP() returned false, want true")
+	}
+
+	B := func(w http.ResponseWriter, r *http.Request, next func()) {
+
+	}
+	ml.Add(B)
+	if ml.Len() != 2 {
+		t.Error("Should has 2 middleware but got 1")
+	}
+	t2 := ml.ServeHTTP(nil, nil)
+	if t2 {
+		t.Error("ServeHTTP() returned true, want false")
+	}
+}
+
+func TestNewRoute(t *testing.T) {
+	// 创建一个测试用的http.Handler
+	handleFn := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusOK)
+	})
+
+	// 调用被测试的函数
+	route := NewRoute("GET", "/test", handleFn)
+
+	// 验证生成的route是否符合预期
+	if route.Method != "GET" {
+		t.Errorf("Expected method to be GET, got %s", route.Method)
+	}
+	if route.Path != "/test" {
+		t.Errorf("Expected path to be /test, got %s", route.Path)
+	}
+	if route.Handler == nil {
+		t.Error("Expected handler to be set")
+	}
+	if route.matcher == nil {
+		t.Error("Expected matcher to be set")
+	}
+	if route.middles == nil {
+		t.Error("Expected middles to be set")
+	}
+
+	route2 := NewRoute("GET", "/test2/:id", handleFn)
+
+	if route2.matcher.Params[0] != "id" {
+		t.Errorf("Expected param name to be id, got %s", route2.matcher.Params[0])
+	}
+
+	if route2.matcher.Reg == nil {
+		t.Error("Expected matcher.Reg to be set")
+	}
+}
diff --git a/server/server.go b/server/server.go
index c0cd3f3..90d6f87 100644
--- a/server/server.go
+++ b/server/server.go
@@ -50,6 +50,14 @@ func (route *Route) Match(r *http.Request) bool {
 func (route *Route) Add(m Middleware) {
 	route.middles.Add(m)
 }
+
+// NewRoute 返回一个新的Route实例
+// 参数：
+// - method: 请求方法
+// - path: 请求路径
+// - handleFn: http.Handler处理函数
+// 返回值：
+// - *Route: 一个指向Route的指针
 func NewRoute(method string, path string, handleFn http.Handler) *Route {
 	ret := &Route{
 		Method:  method,
@@ -57,7 +65,7 @@ func NewRoute(method string, path string, handleFn http.Handler) *Route {
 		middles: NewMiddlewareLink(),
 	}
 	p := ParseUrl(path)
-	//使用handleFn构建handler
+	// 使用handleFn构建handler
 	ret.Handler = handleFn
 	ret.matcher = &p
 	return ret