def METHOD_NAME(self):
    # test min_value is None
    result = make_divisible(34, 8, None)
    self.assertEqual(result, 32)
    # test when new_value > min_ratio * value
    result = make_divisible(10, 8, min_ratio=0.9)
    self.assertEqual(result, 16)
    # test min_value = 0.8
    result = make_divisible(33, 8, min_ratio=0.8)
    self.assertEqual(result, 32)