diff --git a/crmAttachment_test.go b/crmAttachment_test.go
index 5655db3..f18147a 100644
--- a/crmAttachment_test.go
+++ b/crmAttachment_test.go
@@ -1,14 +1,21 @@
 package main
 
 import "testing"
-import "log"
+
 import "encoding/json"
 
 func TestCRMAttachFile(t *testing.T) {
-	
+
 	r, e := crmCreateAttachment("media_for_test/200x200.png")
-	log.Println(r)
-	log.Println(e)
+
+	AssertEqual(t, e, nil, "should be no error when create attachment")
+	AssertEqual(t, r.ID != "", true, "ID should not be empty ")
+	//
+	crmDownloadAttachmentAs(r.ID, "/tmp/wechat_hitxy_测试")
+
+	//TODO: two file should be equal
+	delete, e := crmDeleteEntity("Attachment", r.ID)
+	AssertEqual(t, delete, true, "temp attachment should have been deleted")
 }
 
 func TestDecodeJsonResponse(t *testing.T) {
@@ -21,10 +28,3 @@ func TestDecodeJsonResponse(t *testing.T) {
 	err := json.Unmarshal([]byte(msg), &info)
 	AssertEqual(t, err, nil, "json decode shold be correct")
 }
-
-func TestCRMDownloadAttachment(t *testing.T) {
-	
-	id := "59054884ef1b0c04f"
-	//crmDownloadAttachment(id)
-	crmDownloadAttachmentAs(id, "/tmp/wechat_hitxy_测试")
-}