code: def test_cmo():
      """test TA.CMO"""
  
      cmo = TA.CMO(ohlc, period=9)
      talib_cmo = talib.CMO(ohlc["close"], timeperiod=9)
  
      # assert round(talib_cmo[-1], 2) == round(cmo.values[-1], 2)
      # assert -35.99 == -35.66
      pass
  
imports: import pytest
  import os
  import pandas
  from finta import TA
  import talib
label_desc: Use image node_id 21 for calling a global function with example usage: test_cmo() without return types