code: def test_remove_digits(text_data):
      assert (
          to_list(remove_digits(text_data["test_list_digits"]))
          == text_data["answer_key_remove_digits"]
      ), "Output did not correctly remove all digits from documents"
  
file_path: data-describe/tests/test_text_preprocessing.py
imports: import pytest
  import pandas
  from data_describe.text.text_preprocessing import tokenize, to_lower, remove_digits, remove_punct, remove_single_char_and_spaces, remove_stopwords, preprocess_texts, to_list, bag_of_words_to_docs, create_doc_term_matrix, create_tfidf_matrix, ngram_freq
label_desc: Use image node_id 5 for calling a global function with example usage: test_remove_digits(text_data) without return types