diff --git a/common/types_test.go b/common/types_test.go
index bc4f390..fda05db 100644
--- a/common/types_test.go
+++ b/common/types_test.go
@@ -28,6 +28,8 @@ func TestDb(t *testing.T) {
 		return nil
 	}()
 	assert.NotEqual(t, nil, err)
+	sdb := db.ToSQLDB()
+	db = SQLDB2DB(sdb)
 }
 
 func TestDbAlone(t *testing.T) {
diff --git a/common/utils_test.go b/common/utils_test.go
index 664f543..ecebe8e 100644
--- a/common/utils_test.go
+++ b/common/utils_test.go
@@ -79,11 +79,16 @@ func TestGin(t *testing.T) {
 	assert.Equal(t, "{\"code\":500,\"message\":\"err1\"}", getResultString("/api/error", strings.NewReader("{}")))
 }
 
-// func TestResty(t *testing.T) {
-// 	resp, err := RestyClient.R().Get("http://taobao.com")
-// 	assert.Equal(t, nil, err)
-// 	err2 := CatchP(func() {
-// 		CheckRestySuccess(resp, err)
-// 	})
-// 	assert.NotEqual(t, nil, err2)
-// }
+func TestSome(t *testing.T) {
+	n := MustAtoi("123")
+	assert.Equal(t, 123, n)
+
+	wd := MustGetwd()
+	assert.NotEqual(t, "", wd)
+
+	dir1 := GetCurrentCodeDir()
+	assert.Equal(t, true, strings.HasSuffix(dir1, "common"))
+
+	func1 := GetFuncName()
+	assert.Equal(t, true, strings.HasSuffix(func1, "TestSome"))
+}
diff --git a/dtmsvr/cron.go b/dtmsvr/cron.go
index ca6c828..69913d7 100644
--- a/dtmsvr/cron.go
+++ b/dtmsvr/cron.go
@@ -9,16 +9,6 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
-// CronPrepared cron expired prepared trans forever
-func CronPrepared() {
-	for {
-		notEmpty := CronTransOnce(time.Duration(0), "prepared")
-		if !notEmpty {
-			sleepCronTime()
-		}
-	}
-}
-
 // CronTransOnce cron expired trans who's status match param status for once. use expireIn as expire time
 func CronTransOnce(expireIn time.Duration, status string) bool {
 	defer handlePanic()
@@ -31,10 +21,10 @@ func CronTransOnce(expireIn time.Duration, status string) bool {
 	return true
 }
 
-// CronSubmitted cron expired submitted trans forever
-func CronSubmitted() {
-	for {
-		notEmpty := CronTransOnce(time.Duration(0), "submitted")
+// CronExpiredTrans cron expired trans, num == -1 indicate for ever
+func CronExpiredTrans(status string, num int) {
+	for i := 0; i < num || num == -1; i++ {
+		notEmpty := CronTransOnce(time.Duration(0), status)
 		if !notEmpty {
 			sleepCronTime()
 		}
diff --git a/dtmsvr/dtmsvr_test.go b/dtmsvr/dtmsvr_test.go
index 2d136ae..28debeb 100644
--- a/dtmsvr/dtmsvr_test.go
+++ b/dtmsvr/dtmsvr_test.go
@@ -16,13 +16,12 @@ import (
 var DtmServer = examples.DtmServer
 var Busi = examples.Busi
 
-var myinit int = func() int {
+func init() {
 	common.InitApp(common.GetProjectDir(), &config)
 	config.Mysql["database"] = dbName
 	PopulateMysql()
 	examples.PopulateMysql()
-	return 0
-}()
+}
 
 func TestDtmSvr(t *testing.T) {
 	TransProcessedTestChan = make(chan string, 1)
@@ -72,6 +71,8 @@ func TestCover(t *testing.T) {
 	CronTransOnce(0, "submitted")
 	defer handlePanic()
 	checkAffected(db.DB)
+
+	go CronExpiredTrans("submitted", 1)
 }
 
 func getTransStatus(gid string) string {
diff --git a/dtmsvr/main.go b/dtmsvr/main.go
index 0af5c74..1083eb3 100644
--- a/dtmsvr/main.go
+++ b/dtmsvr/main.go
@@ -14,8 +14,8 @@ var dtmsvrPort = 8080
 // MainStart main
 func MainStart() {
 	StartSvr()
-	go CronSubmitted()
-	go CronPrepared()
+	go CronExpiredTrans("submitted", -1)
+	go CronExpiredTrans("prepared", -1)
 }
 
 // StartSvr StartSvr