docstr: Test loading the entire corpus of languages.
docstr_tok: ["Test","loading","the","entire","corpus","of","languages","."]
code: def test_load_corpus(self):
      """
      Test loading the entire corpus of languages.
      """
      corpus_files = corpus.list_corpus_files("chatterbot.corpus")
      corpus_data = corpus.load_corpus(*corpus_files)
  
      self.assertTrue(len(list(corpus_data)))
  
imports: import os
  import io
  from unittest import TestCase
  from chatterbot import corpus
label_desc: Use image node_id 4 for calling the CorpusUtilsTestCase obj's underlying member method code with example usage: obj.test_load_corpus() without return types