code: def test_get_pos_tag(self):
      sent = "小明想去吃螺蛳粉。"
      self.assertRaises(
          AssertionError, self.test_processor.get_pos_tag, {}
      )
      self.assertEqual([], self.test_processor.get_pos_tag(""))
      self.assertEqual(
          [
              ["nh", 0, 1],
              ["v", 2, 2],
              ["v", 3, 3],
              ["v", 4, 4],
              ["n", 5, 7],
              ["wp", 8, 8],
          ],
          self.test_processor.get_pos_tag(sent),
      )
  
file_path: textflint/test/common/preprocess/test_cn_processor.py
imports: import unittest
  from textflint.common.preprocess.cn_processor import CnProcessor
label_desc: Use image node_id 4 for calling the TestCnProcessor obj's underlying member method code with example usage: obj.test_get_pos_tag() without return types