diff --git a/common/rpc_service.go b/common/rpc_service.go
index 3bb3dfe32250ee24e35b1f594509b477a4eea5c9..3a25d322391bf3ee52fabadd511677a52dcb169a 100644
--- a/common/rpc_service.go
+++ b/common/rpc_service.go
@@ -133,7 +133,7 @@ func (s *Service) Method() map[string]*MethodType {
 	return s.methods
 }
 
-// Method ...
+// Name will return service name
 func (s *Service) Name() string {
 	return s.name
 }
diff --git a/config/base_config_test.go b/config/base_config_test.go
index e06b68a9dc8b876162f889c28af9a9ac3bbd3484..60eccfb1836dccbec0e8dc593a0954005117c28e 100644
--- a/config/base_config_test.go
+++ b/config/base_config_test.go
@@ -53,15 +53,6 @@ func Test_refresh(t *testing.T) {
 			Owner:        "dubbo",
 			Environment:  "test"},
 		Registries: map[string]*RegistryConfig{
-			//"shanghai_reg1": {
-			//	id:         "shanghai_reg1",
-			//	Protocol:   "mock",
-			//	TimeoutStr: "2s",
-			//	group:      "shanghai_idc",
-			//	Address:    "127.0.0.1:2181",
-			//	Username:   "user1",
-			//	Password:   "pwd1",
-			//},
 			"shanghai_reg2": {
 				Protocol:   "mock",
 				TimeoutStr: "2s",
@@ -156,15 +147,6 @@ func Test_appExternal_refresh(t *testing.T) {
 			Owner:        "dubbo",
 			Environment:  "test"},
 		Registries: map[string]*RegistryConfig{
-			//"shanghai_reg1": {
-			//	id:         "shanghai_reg1",
-			//	Protocol:   "mock",
-			//	TimeoutStr: "2s",
-			//	group:      "shanghai_idc",
-			//	Address:    "127.0.0.1:2181",
-			//	Username:   "user1",
-			//	Password:   "pwd1",
-			//},
 			"shanghai_reg2": {
 				Protocol:   "mock",
 				TimeoutStr: "2s",
@@ -251,15 +233,6 @@ func Test_appExternalWithoutId_refresh(t *testing.T) {
 			Owner:        "dubbo",
 			Environment:  "test"},
 		Registries: map[string]*RegistryConfig{
-			//"shanghai_reg1": {
-			//	id:         "shanghai_reg1",
-			//	Protocol:   "mock",
-			//	TimeoutStr: "2s",
-			//	group:      "shanghai_idc",
-			//	Address:    "127.0.0.1:2181",
-			//	Username:   "user1",
-			//	Password:   "pwd1",
-			//},
 			"shanghai_reg2": {
 				Protocol:   "mock",
 				TimeoutStr: "2s",
@@ -408,15 +381,6 @@ func Test_refreshProvider(t *testing.T) {
 			Owner:        "dubbo",
 			Environment:  "test"},
 		Registries: map[string]*RegistryConfig{
-			//"shanghai_reg1": {
-			//	id:         "shanghai_reg1",
-			//	Protocol:   "mock",
-			//	TimeoutStr: "2s",
-			//	group:      "shanghai_idc",
-			//	Address:    "127.0.0.1:2181",
-			//	Username:   "user1",
-			//	Password:   "pwd1",
-			//},
 			"shanghai_reg2": {
 				Protocol:   "mock",
 				TimeoutStr: "2s",
diff --git a/config/instance/metedata_report.go b/config/instance/metedata_report.go
index 6adc7e8a686c2308fa9c06c2aa3f2e393795fb0d..9cf435bc9debf09d0707d0a3b5d699c79d2cafa7 100644
--- a/config/instance/metedata_report.go
+++ b/config/instance/metedata_report.go
@@ -18,13 +18,13 @@
 package instance
 
 import (
-	"github.com/apache/dubbo-go/metadata/report"
 	"sync"
 )
 
 import (
 	"github.com/apache/dubbo-go/common"
 	"github.com/apache/dubbo-go/common/extension"
+	"github.com/apache/dubbo-go/metadata/report"
 )
 
 var (
diff --git a/config/service_config_test.go b/config/service_config_test.go
index 26c558db1bfa44d116dbd9d946e90c43298d66ef..fb3b4a7dc20e32fbcaf6f9514991fba9a7af0d95 100644
--- a/config/service_config_test.go
+++ b/config/service_config_test.go
@@ -18,10 +18,13 @@
 package config
 
 import (
-	"go.uber.org/atomic"
 	"testing"
 )
 
+import (
+	"go.uber.org/atomic"
+)
+
 import (
 	"github.com/apache/dubbo-go/common/extension"
 )
diff --git a/config_center/zookeeper/impl_test.go b/config_center/zookeeper/impl_test.go
index b8c2cf49d14817202c88782f7ffff2ddecb86c6e..30389122a3a06ee260f2ed8b21057523137995d5 100644
--- a/config_center/zookeeper/impl_test.go
+++ b/config_center/zookeeper/impl_test.go
@@ -159,7 +159,7 @@ func Test_RemoveListener(t *testing.T) {
 
 func TestZookeeperDynamicConfiguration_PublishConfig(t *testing.T) {
 	value := "Test Data"
-	customGroup := "Custom group"
+	customGroup := "Custom Group"
 	key := "myKey"
 	ts, zk := initZkData(config_center.DEFAULT_GROUP, t)
 	defer ts.Stop()
diff --git a/metadata/namemapping/dynamic/service_name_mapping.go b/metadata/namemapping/dynamic/service_name_mapping.go
index b50a73c820589d7f1b10a35310201ac79de3b481..85e94a89c72be2237b52b1c96329435371be2279 100644
--- a/metadata/namemapping/dynamic/service_name_mapping.go
+++ b/metadata/namemapping/dynamic/service_name_mapping.go
@@ -18,7 +18,6 @@
 package dynamic
 
 import (
-	"github.com/apache/dubbo-go/metadata/namemapping"
 	"strconv"
 	"time"
 )
@@ -32,6 +31,7 @@ import (
 	"github.com/apache/dubbo-go/common/constant"
 	"github.com/apache/dubbo-go/config"
 	"github.com/apache/dubbo-go/config_center"
+	"github.com/apache/dubbo-go/metadata/namemapping"
 )
 
 const (