def test_notCalledInDefault(self):
        """
        The coerce functions are not called if no values are provided.
        """
        us = WeirdCallableOptions()
        argV = []
        us.parseOptions(argV)

        The coerce functions are not called if no values are provided.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/test/test_usage.py