code: def test_pad1d(
      self, inputs: list[T], min_len: T, pad_val: T, expected: list[T]
  ):
      self.assertEqual(utils.pad1d(inputs, min_len, pad_val), expected)
  
imports: from collections.abc import Callable, Sequence
  import copy
  from typing import Any, Optional, TypeVar, Union
  from absl.testing import absltest
  from absl.testing import parameterized
  from lit_nlp.api import types
  from lit_nlp.lib import utils
  import numpy
label_desc: Use image node_id 8 for calling the UtilsTest obj's underlying member method code with example usage: obj.test_pad1d(inputs, min_len, pad_val, expected) without return types