code: def test_non_cast_input():
      """Checks default cleaning behaviour."""
      assert _currency_column_to_numeric("-1,000,000 yen") == "-1000000"
  
file_path: pyjanitor/tests/functions/test_currency_column_to_numeric.py
imports: import numpy
  import pandas
  import pytest
  from pandas.testing import assert_frame_equal
  from janitor.functions.currency_column_to_numeric import _currency_column_to_numeric
label_desc: Use image node_id 13 for calling a global function with example usage: test_non_cast_input() without return types