code: def test_dropna_no_nan(self):
      for ser in [
          Series([1, 2, 3], name="x"),
          Series([False, True, False], name="x"),
      ]:
          result = ser.dropna()
          tm.assert_series_equal(result, ser)
          assert result is not ser
  
          s2 = ser.copy()
          return_value = s2.dropna(inplace=True)
          assert return_value is None
          tm.assert_series_equal(s2, ser)
  
file_path: pandas/pandas/tests/series/methods/test_dropna.py
imports: import numpy
  import pytest
  from pandas import DatetimeIndex, IntervalIndex, NaT, Period, Series, Timestamp
  import pandas._testing
label_desc: Use image node_id 3 for calling the TestDropna obj's underlying member method code with example usage: obj.test_dropna_no_nan() without return types