def METHOD_NAME(self):
    self._copy_file_without_generated_keywords(KEYWORD_FILE, TEST_PY_FILE)
    self.addCleanup(support.unlink, TEST_PY_FILE)
    self.assertFalse(filecmp.cmp(KEYWORD_FILE, TEST_PY_FILE))
    self.assertEqual((0, b''), self._generate_keywords(GRAMMAR_FILE,
                                                       TEST_PY_FILE))
    self.assertTrue(filecmp.cmp(KEYWORD_FILE, TEST_PY_FILE))