fix test issue.

test/helper/ztf/ztf.go

@@ -102,12 +102,10 @@ func CreateSite(webpage plwHelper.Webpage) {
 }
 
 func ExpandWorspace(webpage plwHelper.Webpage) (err error) {
-	plwConf.DisableErr()
-	defer plwConf.EnableErr()
-	err = webpage.WaitForSelectorTimeout(".tree-node-title:has-text('单元测试工作目录')", 3000)
-	if err != nil {
+	if !webpage.ElementExist(".tree-node-title:has-text('单元测试工作目录')") {
 		CreateTestWorkspace(webpage, "单元测试工作目录", "")
 	}
+
 	selector := webpage.QuerySelectorAll(".tree-node-root:has-text('单元测试工作目录')")
 	className := selector.GetAttribute(0, "class")
 	if className != "" && !strings.Contains(className, "collapsed") {