def METHOD_NAME(self):
    self._servicer._redis_dict.clear()
    req = UpdateRecordRequest()
    req.id = "IMSI557"
    self._stub.UpdateRecord(req)
    self.assertTrue(req.id in self._servicer._redis_dict)
    del_req = DeleteRecordRequest()
    del_req.id = "IMSI557"
    self._stub.DeleteRecord(del_req)
    self.assertFalse(req.id in self._servicer._redis_dict)
    with self.assertRaises(grpc.RpcError) as err:
        self._stub.DeleteRecord(del_req)
    self.assertEqual(err.exception.code(), grpc.StatusCode.NOT_FOUND)