code: def test_min_padding_length(self):
      sentence = "AllenNLP is awesome ."
      tokens = [Token(token) for token in sentence.split(" ")]
      vocab = Vocabulary()
      vocab.add_token_to_namespace("A", namespace="characters")  # 2
      vocab.add_token_to_namespace("l", namespace="characters")  # 3
      vocab.add_token_to_namespace("e", namespace="characters")  # 4
      vocab.add_token_to_namespace("n", namespace="characters")  # 5
      vocab.add_token_to_namespace("N", namespace="characters")  # 6
      vocab.add_token_to_namespace("L", namespace="characters")  # 7
      vocab.add_token_to_namespace("P", namespace="characters")  # 8
      vocab.add_token_to_namespace("i", namespace="characters")  # 9
      vocab.add_token_to_namespace("s", namespace="characters")  # 10
      vocab.add_token_to_namespace("a", namespace="characters")  # 11
      vocab.add_token_to_namespace("w", namespace="characters")  # 12
      vocab.add_token_to_namespace("o", namespace="characters")  # 13
      vocab.add_token_to_namespace("m", namespace="characters")  # 14
      vocab.add_token_to_namespace(".", namespace="characters")  # 15
  
      indexer = TokenCharactersIndexer(
          "characters", min_padding_length=10
      )
      indices = indexer.tokens_to_indices(tokens, vocab)
      padded = indexer.as_padded_tensor_dict(
          indices, indexer.get_padding_lengths(indices)
      )
      assert padded["token_characters"].tolist() == [
          [2, 3, 3, 4, 5, 6, 7, 8, 0, 0],
          [9, 10, 0, 0, 0, 0, 0, 0, 0, 0],
          [11, 12, 4, 10, 13, 14, 4, 0, 0, 0],
          [15, 0, 0, 0, 0, 0, 0, 0, 0, 0],
      ]
  
file_path: allennlp/tests/data/token_indexers/character_token_indexer_test.py
imports: from collections import defaultdict
  import pytest
  from allennlp.common.testing import AllenNlpTestCase
  from allennlp.data import Token, Vocabulary
  from allennlp.data.token_indexers import TokenCharactersIndexer
  from allennlp.data.tokenizers.character_tokenizer import CharacterTokenizer
label_desc: Use image node_id 5 for calling the CharacterTokenIndexerTest obj's underlying member method code with example usage: obj.test_min_padding_length() without return types