code: def test_get_words(self):
      # test get words
      self.assertEqual(
          ["That", "is", "a", "good", "survey"],
          pos_sample.get_words("x"),
      )
      self.assertRaises(AssertionError, pos_sample.get_words, "y")
  
file_path: textflint/test/input/component/sample/test_pos_sample.py
imports: import unittest
  from textflint.input.component.sample.pos_sample import *
label_desc: Use image node_id 6 for calling the TestPOSSample obj's underlying member method code with example usage: obj.test_get_words() without return types