diff --git a/pkg/util/certmanager/factory/factory_test.go b/pkg/util/certmanager/factory/factory_test.go
new file mode 100644
index 00000000000..44a67885c2e
--- /dev/null
+++ b/pkg/util/certmanager/factory/factory_test.go
@@ -0,0 +1,118 @@
+/*
+Copyright 2022 The OpenYurt Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package factory
+
+import (
+	"fmt"
+	"net"
+	"reflect"
+	"testing"
+
+	certificatesv1 "k8s.io/api/certificates/v1"
+	"k8s.io/apiserver/pkg/authentication/user"
+	"k8s.io/client-go/kubernetes"
+	"k8s.io/client-go/kubernetes/fake"
+
+	"github.com/openyurtio/openyurt/pkg/projectinfo"
+	"github.com/openyurtio/openyurt/pkg/yurttunnel/constants"
+)
+
+const (
+	failed  = "\u2717"
+	succeed = "\u2713"
+)
+
+var cs = &fake.Clientset{}
+var fc = &factory{
+	clientset: cs,
+}
+
+func TestNewCertManagerFactory(t *testing.T) {
+	cs := &fake.Clientset{}
+	tests := []struct {
+		name      string
+		clientSet kubernetes.Interface
+		expect    CertManagerFactory
+	}{
+		{
+			"normal",
+			cs,
+			fc,
+		},
+	}
+
+	for _, tt := range tests {
+		tf := func(t *testing.T) {
+			t.Parallel()
+			t.Logf("\tTestCase: %s", tt.name)
+			{
+				get := NewCertManagerFactory(cs)
+
+				if !reflect.DeepEqual(get, tt.expect) {
+					t.Fatalf("\t%s\texpect %v, but get %v", failed, tt.expect, get)
+				}
+				t.Logf("\t%s\texpect %v, get %v", succeed, tt.expect, get)
+
+			}
+		}
+		t.Run(tt.name, tf)
+	}
+}
+
+func TestNew(t *testing.T) {
+	tests := []struct {
+		name   string
+		cfg    *CertManagerConfig
+		expect error
+	}{
+		{
+			"normal",
+			&CertManagerConfig{
+				IPs:      []net.IP{},
+				DNSNames: []string{},
+				IPGetter: func() ([]net.IP, error) {
+					dynamicIPs := []net.IP{}
+					return dynamicIPs, nil
+				},
+				ComponentName:  projectinfo.GetServerName(),
+				CertDir:        "",
+				SignerName:     certificatesv1.KubeletServingSignerName,
+				CommonName:     fmt.Sprintf("system:node:%s", constants.YurtTunnelServerNodeName),
+				Organizations:  []string{user.NodesGroup},
+				ForServerUsage: true,
+			},
+			nil,
+		},
+	}
+
+	for _, tt := range tests {
+		tf := func(t *testing.T) {
+			t.Parallel()
+			t.Logf("\tTestCase: %s", tt.name)
+			{
+				_, get := fc.New(tt.cfg)
+
+				if !reflect.DeepEqual(get, tt.expect) {
+					t.Fatalf("\t%s\texpect %v, but get %v", failed, tt.expect, get)
+				}
+				t.Logf("\t%s\texpect %v, get %v", succeed, tt.expect, get)
+
+			}
+		}
+		t.Run(tt.name, tf)
+	}
+}