code: def test_unicode_to_char_ids(self):
      indexer = ELMoTokenCharactersIndexer()
      indices = indexer.tokens_to_indices(
          [Token(chr(256) + "t")], Vocabulary()
      )
      expected_indices = [
          259,
          197,
          129,
          117,
          260,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
          261,
      ]
      assert indices == {"elmo_tokens": [expected_indices]}
  
file_path: allennlp/tests/data/token_indexers/elmo_indexer_test.py
imports: import numpy
  import pytest
  from allennlp.common.testing import AllenNlpTestCase
  from allennlp.data import Token, Vocabulary, Instance
  from allennlp.data.batch import Batch
  from allennlp.data.token_indexers import ELMoTokenCharactersIndexer
  from allennlp.data.fields import ListField, TextField
label_desc: Use image node_id 3 for calling the TestELMoTokenCharactersIndexer obj's underlying member method code with example usage: obj.test_unicode_to_char_ids() without return types