def test_change_registration_id_for_node(self): registry = DeviceRegistry(self.file_name) registry.save_device_registration(self.node_id, self.registration_id) registry.save_device_registration('node_id_2', 'registration_id_2') registry.save_device_registration('node_id_3', 'registration_id_3') new_registration_id = 'new_registration_id' registry.change_registration_id_for_node( self.node_id, new_registration_id) reader = csv.reader(open(self.file_name, 'r'), csv.excel) for row in reader: self.assertEqual(self.node_id, row[0]) self.assertEqual(new_registration_id, row[1]) break