diff --git a/tests/gotest/batchtest.sh b/tests/gotest/batchtest.sh
index 0fbbf40714b3349651beea9302e66628b31a22ac..8f5a7fe8f032134e55c9d9675361590ed6d5b19b 100755
--- a/tests/gotest/batchtest.sh
+++ b/tests/gotest/batchtest.sh
@@ -17,5 +17,5 @@ go env -w GO111MODULE=on
 go env -w GOPROXY=https://goproxy.io,direct
 
 bash ./case001/case001.sh $severIp $serverPort
-#bash ./case002/case002.sh $severIp $serverPort
+bash ./case002/case002.sh $severIp $serverPort
 #bash ./case003/case003.sh $severIp $serverPort
diff --git a/tests/gotest/case001/case001.go b/tests/gotest/case001/case001.go
index 9e912aab99e2aa0da1e1490741f04e67ab1d0c8a..9d35888f313461a2ce90c7a6ed4ef2791229866c 100644
--- a/tests/gotest/case001/case001.go
+++ b/tests/gotest/case001/case001.go
@@ -19,7 +19,7 @@ import (
 	"database/sql"
 	"flag"
 	"fmt"
-	_ "github.com/taosdata/driver-go/taosSql"
+	_ "github.com/taosdata/driver-go/v2/taosSql"
 	"log"
 	"strconv"
 	"time"
@@ -63,6 +63,7 @@ func main() {
 
 	url = "root:taosdata@/tcp(" + configPara.hostName + ":" + strconv.Itoa(configPara.serverPort) + ")/"
 	// open connect to taos server
+	fmt.Printf("url:%s",url)
 	db, err := sql.Open(taosDriverName, url)
 	if err != nil {
 		log.Fatalf("Open database error: %s\n", err)
@@ -168,17 +169,18 @@ func insert_data(db *sql.DB, demot string) {
 
 func select_data(db *sql.DB, demot string) {
 	st := time.Now().Nanosecond()
-
+	fmt.Println(demot)
 	rows, err := db.Query("select * from ? ", demot) // go text mode
+	fmt.Println("end query",err)
 	checkErr(err, "select db.Query")
 
 	fmt.Printf("%10s%s%8s %5s %9s%s %s %8s%s %7s%s %8s%s %4s%s %5s%s\n", " ", "ts", " ", "id", " ", "name", " ", "len", " ", "flag", " ", "notes", " ", "fv", " ", " ", "dv")
 	var affectd int
 
 	//decoder := mahonia.NewDecoder("gbk") // 把原来ANSI格式的文本文件里的字符，用gbk进行解码。
-
+	fmt.Println("start next")
 	for rows.Next() {
-		var ts string
+		var ts time.Time
 		var name string
 		var id int
 		var len int8
@@ -188,6 +190,7 @@ func select_data(db *sql.DB, demot string) {
 		var dv float64
 
 		err = rows.Scan(&ts, &id, &name, &len, &flag, &notes, &fv, &dv)
+		fmt.Println("rows:",err)
 		checkErr(err, "select rows.Scan")
 
 		fmt.Printf("%s|\t", ts)
diff --git a/tests/gotest/case002/case002.bat b/tests/gotest/case002/case002.bat
new file mode 100644
index 0000000000000000000000000000000000000000..ebec576e724ccb14319dd380c9783a783ac0db62
--- /dev/null
+++ b/tests/gotest/case002/case002.bat
@@ -0,0 +1,9 @@
+@echo off
+echo ==== start run cases001.go
+
+del go.*
+go mod init demotest
+go build
+demotest.exe -h %1 -p %2
+cd ..
+
diff --git a/tests/gotest/case002/case002.go b/tests/gotest/case002/case002.go
new file mode 100644
index 0000000000000000000000000000000000000000..c69da04cb271c24e33953ca8fdfea71c67349b4f
--- /dev/null
+++ b/tests/gotest/case002/case002.go
@@ -0,0 +1,81 @@
+package main
+
+import (
+	"database/sql/driver"
+	"fmt"
+	"io"
+	"os"
+	"time"
+
+	taos "github.com/taosdata/driver-go/v2/af"
+)
+
+func Subscribe_check(topic taos.Subscriber, check int) bool {
+	count := 0
+	rows, err := topic.Consume()
+	defer func() { rows.Close(); time.Sleep(time.Second) }()
+	if err != nil {
+		fmt.Println(err)
+		os.Exit(3)
+	}
+	for {
+		values := make([]driver.Value, 2)
+		err := rows.Next(values)
+		if err == io.EOF {
+			break
+		} else if err != nil {
+			fmt.Fprintln(os.Stderr, err)
+			os.Exit(4)
+		}
+		count++
+	}
+	if count == check {
+		return false
+	} else {
+		return true
+	}
+}
+func main() {
+	ts := 1630461600000
+	db, err := taos.Open("127.0.0.1", "", "", "", 0)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+	defer db.Close()
+	db.Exec("drop if exists database test")
+	db.Exec("create if not exists database test")
+	db.Exec("use test")
+	db.Exec("drop if exists database test")
+	db.Exec("create table test (ts timestamp ,level int)")
+	for i := 0; i < 10; i++ {
+		sqlcmd := fmt.Sprintf("insert into test values(%d,%d)", ts+i, i)
+		db.Exec(sqlcmd)
+	}
+
+	fmt.Println("consumption 01.")
+	topic, err := db.Subscribe(false, "test", "select ts, level from test", time.Second)
+	if Subscribe_check(topic, 10) {
+		os.Exit(3)
+	}
+
+	fmt.Println("consumption 02: no new rows inserted")
+	if Subscribe_check(topic, 0) {
+		os.Exit(3)
+	}
+
+	fmt.Println("consumption 03: after one new rows inserted")
+	sqlcmd := fmt.Sprintf("insert into test values(%d,%d)", ts+10, 10)
+	db.Exec(sqlcmd)
+	if Subscribe_check(topic, 1) {
+		os.Exit(3)
+	}
+
+	fmt.Println("consumption 04: keep progress and continue previous subscription")
+	topic.Unsubscribe(true)
+	topic, err = db.Subscribe(false, "test", "select ts, level from test", time.Second)
+	if Subscribe_check(topic, 0) {
+		os.Exit(3)
+	}
+
+}
diff --git a/tests/gotest/case002/case002.sh b/tests/gotest/case002/case002.sh
new file mode 100644
index 0000000000000000000000000000000000000000..94e5bb44e03a1f7d2704752fcf9c080abcb4f23f
--- /dev/null
+++ b/tests/gotest/case002/case002.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+
+echo "==== start run cases001.go"
+
+set +e
+#set -x
+
+script_dir="$(dirname $(readlink -f $0))"
+#echo "pwd: $script_dir, para0: $0"
+
+#execName=$0
+#execName=`echo ${execName##*/}`
+#goName=`echo ${execName%.*}`
+
+###### step 3: start build
+cd $script_dir
+rm -f go.*
+go mod init demotest > /dev/null 2>&1
+go mod tidy > /dev/null 2>&1
+go build  > /dev/null 2>&1
+sleep 1s
+./demotest -h $1 -p $2