def _find_one_after_last_labeled_index(self):
        body_index = 0
        while self.bodies[body_index].segment_id in self.state.body_labels:
            body_index += 1
        return body_index
def test_disk_usage_sensor_is_stateless():
    sensor = disk_usage.DiskUsage()
    ok_([] != sensor.measure())