code: def test_log_dict(self):
      tmp_file = "test_log_dict_tmp.csv"
      csv_logger = CSVLogger(tmp_file)
  
      data = [{"a": 1, "b": 2}, {"a": 3, "b": 4}]
  
      for x in data:
          csv_logger.log_dict(x)
  
      csv_logger.close()
  
      with open(tmp_file, "r") as f:
          lines = [x.strip() for x in f.readlines()]
          assert lines == ["a,b", "1,2", "3,4"]
  
      os.remove(tmp_file)
  
imports: import os
  import unittest
  from parl.utils import CSVLogger
label_desc: Use image node_id 1 for calling the TestCSVLogger obj's underlying member method code with example usage: obj.test_log_dict() without return types