code: def test_read_data_and_make_dataframes(self):
      input_path = testdata.RUNTIME_BY_REGION
      df, by_task = runtime_by_region_vis.read_data_and_make_dataframes(
          input_path
      )
      # Compare as json strings.
      self.assertEqual(df.to_json(), JSON_DF)
      self.assertEqual(by_task.to_json(), JSON_BY_TASK_DF)
  
imports: import io
  from absl.testing import absltest
  from absl.testing import parameterized
  import pandas
  from deepvariant import runtime_by_region_vis
  from deepvariant import testdata
label_desc: Use image node_id 3 for calling the RuntimeByRegionVisTest obj's underlying member method code with example usage: obj.test_read_data_and_make_dataframes() without return types