'test the empty directory behaviour
:return:'

def test_should_be_empty_directory_fail(self):

    self.logger.debug(('#' * 10))
    self.logger.debug('Running    %s', self._testMethodName)
    self.logger.debug(('#' * 10))
    task = HdfsSensorFolder(task_id='Should_be_empty_directory_fail', filepath='/datadirectory/not_empty_directory', be_empty=True, timeout=1, retry_delay=timedelta(seconds=1), poke_interval=1, hook=self.hook)
    with self.assertRaises(AirflowSensorTimeout):
        task.execute(None)
