def test_predict():
 tpot_obj = TPOTClassifier()
 try:
  tpot_obj.predict(testing_features)
  assert False
 except ValueError:
  pass

def test_predict ( ) : tpot_obj = TPOTClassifier ( ) try : tpot_obj . predict ( testing_features ) assert False except ValueError : pass
assert that the tpot predict function raises a valueerror when no optimized pipeline exists .