diff --git a/beego.go b/beego.go
index db5db3f5..32b64f75 100644
--- a/beego.go
+++ b/beego.go
@@ -85,9 +85,11 @@ func initBeforeHTTPRun() {
 
 // TestBeegoInit is for test package init
 func TestBeegoInit(ap string) {
-	os.Setenv("BEEGO_RUNMODE", "test")
 	appConfigPath = filepath.Join(ap, "conf", "app.conf")
 	os.Chdir(ap)
-	LoadAppConfig(appConfigProvider, appConfigPath)
+	if err := LoadAppConfig(appConfigProvider, appConfigPath); err != nil {
+		panic(err)
+	}
+	BConfig.RunMode = "test"
 	initBeforeHTTPRun()
 }