code: def test_tokenize_handles_splits_all_punctuation(self):
      sentence = "wouldn't.[have] -3.45(m^2)"
      expected_tokens = [
          "wouldn",
          "'",
          "t",
          ".",
          "[",
          "have",
          "]",
          "-",
          "3",
          ".",
          "45",
          "(",
          "m",
          "^",
          "2",
          ")",
      ]
      tokens = [t.text for t in self.word_tokenizer.tokenize(sentence)]
      assert tokens == expected_tokens
  
file_path: allennlp/tests/data/tokenizers/letters_digits_tokenizer_test.py
imports: from allennlp.common.testing import AllenNlpTestCase
  from allennlp.data.tokenizers import Token, LettersDigitsTokenizer
label_desc: Use image node_id 4 for calling the TestLettersDigitsTokenizer obj's underlying member method code with example usage: obj.test_tokenize_handles_splits_all_punctuation() without return types