code: def test_count(self, data):
      count_accumulator = accumulator.CountAccumulator(data)
      self.assertEqual(count_accumulator.compute_metrics(), len(data))
      count_accumulator.add_value(1)
      self.assertEqual(
          count_accumulator.compute_metrics(), len(data) + 1
      )
  
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 1 for calling the AccumulatorTest obj's underlying member method code with example usage: obj.test_count(data) without return types