code: def test_stemmer():
      summarizer_w_stemmer = _build_summarizer(
          EMPTY_STOP_WORDS, Stemmer("english")
      )
      summarizer_wo_stemmer = _build_summarizer(EMPTY_STOP_WORDS)
      word = Sentence("testing", Tokenizer("english"))
      assert summarizer_w_stemmer._get_content_words_in_sentence(
          word
      ) == ["test"]
      assert summarizer_wo_stemmer._get_content_words_in_sentence(
          word
      ) == ["testing"]
  
file_path: sumy/tests/test_summarizers/test_sum_basic.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import pytest
  from sumy.models.dom._sentence import Sentence
  from sumy.nlp.tokenizers import Tokenizer
  from sumy.summarizers.sum_basic import SumBasicSummarizer
  from sumy.nlp.stemmers import Stemmer
  from ..utils import build_document
label_desc: Use image node_id 6 for calling a global function with example usage: test_stemmer() without return types