code: def test_flush(self):
      logger = csv_logger.CSVLogger(self.get_tempdir(), flush_every=1)
      for inp in _TEST_INPUTS:
          logger.write(inp)
  
      # Read back data.
      outputs = []
      with open(logger.file_path) as f:
          csv_reader = csv.DictReader(f)
          for row in csv_reader:
              outputs.append(dict(row))
      self.assertEqual(outputs, _TEST_INPUTS)
  
file_path: acme/acme/utils/loggers/csv_test.py
imports: import csv
  import os
  from acme.testing import test_utils
  from acme.utils import paths
  from acme.utils.loggers import csv
  from absl.testing import absltest
  from absl.testing import parameterized
label_desc: Use image node_id 3 for calling the CSVLoggingTest obj's underlying member method code with example usage: obj.test_flush() without return types