def METHOD_NAME(self):
    t = dos(self.set)
    self.assertIsInstance(str(t), str)
    self.assertEqual(str(t), "<DetectedObjectSet(size=4)>")
    self.assertIsInstance(t.__repr__(), str)
    self.assertIsInstance(t.__nice__(), str)
    self.assertEqual(t.__nice__(), "size=4")
    self.assertEqual(t.__getitem__(1),t.at(1))
    itr = iter(t)
    self.assertIsInstance(next(itr),do)