code: def test_get_words(self):
      # test get words
      print(sm_sample.get_words("sentence2"))
      self.assertEqual(
          ["Mr", "zhang", "has", "20", "students"],
          sm_sample.get_words("sentence2"),
      )
      self.assertRaises(AssertionError, sm_sample.get_words, "y")
  
file_path: textflint/test/input/component/sample/test_sm_sample.py
imports: import unittest
  from textflint.input.component.sample.sm_sample import *
label_desc: Use image node_id 5 for calling the TestSMSample obj's underlying member method code with example usage: obj.test_get_words() without return types