code: def test_grp_vectorizer_bad_transform(self, tokenized_docs, groups):
      grp_vectorizer = representations.GroupVectorizer()
      with pytest.raises(ValueError):
          _ = grp_vectorizer.transform(tokenized_docs, groups)
  
imports: import pytest
  import numpy
  from scipy.sparse import coo_matrix
  from textacy import extract, representations
label_desc: Use image node_id 6 for calling the TestGroupVectorizer obj's underlying member method code with example usage: obj.test_grp_vectorizer_bad_transform(tokenized_docs, groups) without return types