def test_sum_no_noise(self):
    with self.cached_session() as sess:
      record1 = tf.constant([2, 0], dtype=tf.int32)
      record2 = tf.constant([-1, 1], dtype=tf.int32)

      query = ddg_sum_query(l2_norm_bound=10, local_scale=0.0)
      query_result, _ = test_utils.run_query(query, [record1, record2])
      result = sess.run(query_result)
      expected = [1, 1]
      self.assertAllEqual(result, expected)