diff --git a/api_chat_test.go b/api_chat_test.go
index 299392f..f50a167 100644
--- a/api_chat_test.go
+++ b/api_chat_test.go
@@ -108,15 +108,9 @@ func TestGetChatMembers(t *testing.T) {
 	if assert.NoError(t, err) {
 		assert.Equal(t, 0, resp.Code)
 		assert.NotEmpty(t, resp.Data.Items)
-		assert.NotEmpty(t, resp.Data.PageToken)
+		assert.Empty(t, resp.Data.PageToken)
 		assert.NotEmpty(t, resp.Data.MemberTotal)
-		if assert.True(t, resp.Data.HasMore) {
-			nextResp, err := bot.GetChatMembers(testGroupChatID, resp.Data.PageToken, 1)
-			if assert.NoError(t, err) {
-				assert.Equal(t, 0, nextResp.Code)
-				t.Log(nextResp.Data.Items)
-			}
-		}
+		assert.False(t, resp.Data.HasMore)
 	}
 }
 
diff --git a/api_group_test.go b/api_group_test.go
index 2a9da32..4c4c5c3 100644
--- a/api_group_test.go
+++ b/api_group_test.go
@@ -1,6 +1,7 @@
 package lark
 
 import (
+	"fmt"
 	"testing"
 	"time"
 
@@ -17,54 +18,69 @@ func TestGetGroupList(t *testing.T) {
 }
 
 func TestGetGroupInfo(t *testing.T) {
-	resp, err := bot.GetGroupInfo("oc_51e1f7ff2b3dbe8f74b7b22d5d44d14e")
+	resp, err := bot.GetGroupInfo(testGroupChatID)
 	if assert.NoError(t, err) {
 		assert.Equal(t, 0, resp.Code)
-		assert.Equal(t, "go-lark开发者交流群", resp.Data.Name)
+		assert.Equal(t, "go-lark-ci", resp.Data.Name)
 		assert.NotEmpty(t, resp.Data.Members)
 	}
 }
 
-func TestGroupCreateDisbandAddDelete(t *testing.T) {
-	createResp, err := bot.CreateGroup("go-lark-ci create-group", "group create", []string{testUserOpenID})
+func TestGroupCRUD(t *testing.T) {
+	// create group
+	createResp, err := bot.CreateGroup(
+		fmt.Sprintf("go-lark-ci group %d", time.Now().Unix()),
+		"group create",
+		[]string{testUserOpenID},
+	)
 	if assert.NoError(t, err) {
 		assert.Equal(t, 0, createResp.Code)
-		t.Log(createResp.OpenChatID)
 	}
-
-	addResp, err := bot.AddGroupMember(createResp.OpenChatID, []string{"ou_b4852f3f88e454522180a5fcb346648d"})
+	groupChatID := createResp.OpenChatID
+	// delete member
+	delResp, err := bot.DeleteGroupMember(groupChatID, []string{testUserOpenID})
+	if assert.NoError(t, err) {
+		assert.Equal(t, 0, delResp.Code)
+	}
+	// add member
+	addResp, err := bot.AddGroupMember(groupChatID, []string{testUserOpenID})
 	if assert.NoError(t, err) {
 		assert.Equal(t, 0, addResp.Code)
 	}
-	delResp, err := bot.DeleteGroupMember(createResp.OpenChatID, []string{"ou_b4852f3f88e454522180a5fcb346648d"})
+	// delete again
+	delResp, err = bot.DeleteGroupMember(groupChatID, []string{testUserOpenID})
 	if assert.NoError(t, err) {
 		assert.Equal(t, 0, delResp.Code)
 	}
-	addV4Resp, err := bot.AddGroupMemberByUserID(testGroupChatID, []string{"55677932"})
+	// add by user id
+	addByUserResp, err := bot.AddGroupMemberByUserID(groupChatID, []string{testUserID})
 	if assert.NoError(t, err) {
-		assert.Equal(t, 0, addV4Resp.Code)
+		assert.Equal(t, 0, addByUserResp.Code)
 	}
-
-	disbandResp, err := bot.DisbandGroup(createResp.OpenChatID)
-	assert.Nil(t, err)
-	assert.Zero(t, disbandResp.Code)
-}
-
-func TestUpdateGroupInfo(t *testing.T) {
-	_, err := bot.UpdateGroupInfo(&UpdateGroupInfoReq{
-		OpenChatID: "oc_dae15ce1b55b00ecf853c50336a51e55",
+	// update info
+	updateResp, err := bot.UpdateGroupInfo(&UpdateGroupInfoReq{
+		OpenChatID: groupChatID,
 		Name:       "test 1",
 	})
-	assert.Nil(t, err)
+	if assert.NoError(t, err) {
+		assert.Equal(t, 0, updateResp.Code)
+	}
+	// disband
+	disbandResp, err := bot.DisbandGroup(groupChatID)
+	if assert.NoError(t, err) {
+		assert.Equal(t, 0, disbandResp.Code)
+	}
 }
 
-func TestAddRemoveBot(t *testing.T) {
-	openChatID := "oc_dae15ce1b55b00ecf853c50336a51e55"
-
-	_, err := bot.RemoveBotFromGroup(openChatID)
-	assert.Nil(t, err)
-	time.Sleep(time.Second)
-
-	_, err = bot.AddBotToGroup(openChatID)
-	assert.Nil(t, err)
+func TestBotAddRemove(t *testing.T) {
+	// rm bot
+	rmBotResp, err := bot.RemoveBotFromGroup(testGroupChatID)
+	if assert.NoError(t, err) {
+		assert.Equal(t, 0, rmBotResp.Code)
+	}
+	// add bot
+	addBotResp, err := bot.AddBotToGroup(testGroupChatID)
+	if assert.NoError(t, err) {
+		assert.Equal(t, 0, addBotResp.Code)
+	}
 }
diff --git a/api_message_test.go b/api_message_test.go
index 8c65ca6..8cc95a5 100644
--- a/api_message_test.go
+++ b/api_message_test.go
@@ -164,7 +164,7 @@ func TestPostMessage(t *testing.T) {
 	}
 	// file
 	msg = NewMsgBuffer(MsgFile)
-	om = msg.BindChatID(testGroupChatID).File("file_v2_356de203-39c2-49fd-8357-70b9b311f44g").Build()
+	om = msg.BindChatID(testGroupChatID).File("file_v3_0069_61085e72-3285-4ac8-82ec-31b060eeae7g").Build()
 	resp, err = bot.PostMessage(om)
 	if assert.NoError(t, err) {
 		assert.Equal(t, 0, resp.Code)
@@ -172,13 +172,13 @@ func TestPostMessage(t *testing.T) {
 	}
 	// audio - not actually tested
 	msg = NewMsgBuffer(MsgAudio)
-	om = msg.BindChatID(testGroupChatID).File("file_v2_356de203-39c2-49fd-8357-70b9b311f44g").Build()
+	om = msg.BindChatID(testGroupChatID).File("file_v3_0069_61085e72-3285-4ac8-82ec-31b060eeae7g").Build()
 	resp, err = bot.PostMessage(om)
 	assert.NotEqual(t, 0, resp.Code)
 	assert.NotEmpty(t, resp.Msg)
 	// media - not actually tested
 	msg = NewMsgBuffer(MsgMedia)
-	om = msg.BindChatID(testGroupChatID).Media("file_v2_b53cd6cc-5327-4968-8bf6-4528deb3068g", "img_v2_b276195a-9ae0-4fec-bbfe-f74b4d5a994g").Build()
+	om = msg.BindChatID(testGroupChatID).Media("file_v3_0069_61085e72-3285-4ac8-82ec-31b060eeae7g", "img_v3_0269_ba0a83c6-21ff-48e2-a159-9061d2c8217g").Build()
 	resp, err = bot.PostMessage(om)
 	assert.NotEqual(t, 0, resp.Code)
 	assert.NotEmpty(t, resp.Msg)
diff --git a/api_notification.go b/api_notification.go
index 98839ee..d31e279 100644
--- a/api_notification.go
+++ b/api_notification.go
@@ -13,6 +13,7 @@ type PostNotificationV2Resp struct {
 }
 
 // PostNotification send message to a webhook
+// deprecated: legacy version, please use PostNotificationV2 instead
 func (bot *Bot) PostNotification(title, text string) (*PostNotificationResp, error) {
 	if !bot.requireType(NotificationBot) {
 		return nil, ErrBotTypeError
diff --git a/api_notification_test.go b/api_notification_test.go
index 0ebdb35..2f95720 100644
--- a/api_notification_test.go
+++ b/api_notification_test.go
@@ -7,15 +7,6 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-func TestWebhookV1(t *testing.T) {
-	bot := NewNotificationBot(testWebhookV1)
-	resp, err := bot.PostNotification("", "no title message")
-	assert.NoError(t, err)
-	assert.True(t, resp.Ok)
-	_, err = bot.PostNotification("go-lark CI", "it works")
-	assert.NoError(t, err)
-}
-
 // A weird case which sends V2 message body with V1 URL
 func TestWebhookV1Error(t *testing.T) {
 	bot := NewNotificationBot(testWebhookV1)
@@ -92,7 +83,7 @@ func TestWebhookV2Signed(t *testing.T) {
 	bot := NewNotificationBot(testWebhookV2Signed)
 
 	mbText := NewMsgBuffer(MsgText)
-	mbText.Text("hello sign").WithSign("LIpnNexV7rwOyOebKoqSdb", time.Now().Unix())
+	mbText.Text("hello sign").WithSign("FT1dnAgPYYTcpafMTkhPjc", time.Now().Unix())
 	resp, err := bot.PostNotificationV2(mbText.Build())
 	assert.NoError(t, err)
 	assert.Zero(t, resp.StatusCode)