code: def test_full_tokenizer(self):
      tokenizer = self.tokenizer_class(
          self.vocab_file, self.merges_file, **self.special_tokens_map
      )
      text = "lower newer"
      bpe_tokens = ["l", "o", "w", "er", "\u0120", "n", "e", "w", "er"]
      tokens = tokenizer.tokenize(text)  # , add_prefix_space=True)
      self.assertListEqual(tokens, bpe_tokens)
  
      input_tokens = tokens + [tokenizer.unk_token]
      input_bpe_tokens = [0, 1, 2, 15, 10, 9, 3, 2, 15, 19]
      self.assertListEqual(
          tokenizer.convert_tokens_to_ids(input_tokens),
          input_bpe_tokens,
      )
  
imports: import itertools
  import json
  import os
  import unittest
  from transformers import AddedToken, RobertaTokenizer, RobertaTokenizerFast
  from transformers.models.roberta.tokenization_roberta import VOCAB_FILES_NAMES
  from transformers.testing_utils import require_tokenizers, slow
  from ...test_tokenization_common import TokenizerTesterMixin
label_desc: Use image node_id 5 for calling the RobertaTokenizationTest obj's underlying member method code with example usage: obj.test_full_tokenizer() without return types