code: def test_copy_series(self):
      expected = Series([1, 2, 3])
      result = SimpleSeriesSubClass(expected).copy()
  
      tm.assert_series_equal(result, expected)
  
imports: import numpy
  import pytest
  import pandas
  from pandas import DataFrame, Index, MultiIndex, Series
  import pandas._testing
label_desc: Use image node_id 2 for calling the TestSubclassWithoutConstructor obj's underlying member method code with example usage: obj.test_copy_series() without return types