def METHOD_NAME(self, provided_param, expected_param):
    cmd = '%s %s' % (self.prefix, provided_param)
    # We do not care about the return code here. All that is of interest
    # is what happened to the arguments before they were passed to botocore
    # which we get from the params={} key. For binary types we will fail in
    # python 3 with an rc of 255 and get an rc of 0 in python 2 where it
    # can't tell the difference, so we pass mock.ANY here to ignore the rc.
    self.assert_params_for_cmd(cmd,
                               params={'FunctionName': expected_param},
                               expected_rc=mock.ANY)