code: def test_time_formatter(self, time, format_expected):
      # issue 18478
      result = converter.TimeFormatter(None)(time)
      assert result == format_expected
  
imports: from datetime import date, datetime
  import subprocess
  import sys
  import numpy
  import pytest
  import pandas._config.config
  from pandas._libs.tslibs import to_offset
  from pandas import Index, Period, PeriodIndex, Series, Timestamp, arrays, date_range
  import pandas._testing
  from pandas.plotting import deregister_matplotlib_converters, register_matplotlib_converters
  from pandas.tseries.offsets import Day, Micro, Milli, Second
label_desc: Use image node_id 6 for calling the TestDateTimeConverter obj's underlying member method code with example usage: obj.test_time_formatter(time, format_expected) without return types