code: def test_clean_names_method_chain(dataframe):
      """Tests clean_names default args in a method chain."""
      df = dataframe.clean_names()
      expected_columns = [
          "a",
          "bell_chart",
          "decorated_elephant",
          "animals@#$%^",
          "cities",
      ]
      assert set(df.columns) == set(expected_columns)
  
file_path: pyjanitor/tests/functions/test_clean_names.py
imports: import pandas
  import pytest
  from janitor.errors import JanitorError
label_desc: Use image node_id 1 for calling a global function with example usage: test_clean_names_method_chain(dataframe) without return types