code: def test_set_names_unset(self, idx, nm, prop):
      data = pd.Series(1, idx)
      result = set_default_names(data)
      assert getattr(result.index, prop) == nm
  
imports: from collections import OrderedDict
  from io import StringIO
  import json
  import numpy
  import pytest
  from pandas.core.dtypes.dtypes import CategoricalDtype, DatetimeTZDtype, PeriodDtype
  import pandas
  from pandas import DataFrame
  import pandas._testing
  from pandas.io.json._table_schema import as_json_table_type, build_table_schema, convert_json_field_to_pandas_type, convert_pandas_type_to_json_field, set_default_names
label_desc: Use image node_id 16 for calling the TestTableOrient obj's underlying member method code with example usage: obj.test_set_names_unset(idx, nm, prop) without return types