add test case

Author: lucemia

gcloud/datastore/test_connection.py

@@ -643,7 +643,7 @@ def test_save_entity_wo_transaction_w_upsert(self):
             'commit',
         ])
         http = conn._http = Http({'status': '200'}, rsp_pb.SerializeToString())
-        result = conn.save_entity(DATASET_ID, key_pb, {'foo': u'Foo'})
+        result = conn.save_entity(DATASET_ID, key_pb, {'foo': u'Foo', 'bar': []})
         self.assertEqual(result, True)
         cw = http._called_with
         self.assertEqual(cw['uri'], URI)