code: def test_sum(self, data, delta):
      sum_accumulator = accumulator.SumAccumulator(data)
      self.assertEqual(sum_accumulator.compute_metrics(), sum(data))
      sum_accumulator.add_value(delta)
      self.assertEqual(
          sum_accumulator.compute_metrics(), sum(data) + delta
      )
  
file_path: pipelinedp/utility_analysis/tests/raw_accumulator_test.py
imports: from absl.testing import absltest
  from absl.testing import parameterized
  import pipeline_dp
  from utility_analysis import raw_accumulator
label_desc: Use image node_id 3 for calling the AccumulatorTest obj's underlying member method code with example usage: obj.test_sum(data, delta) without return types