code: def test_get_ner(self):
      sent = "小明想去吃螺蛳粉。"
      self.assertRaises(AssertionError, self.test_processor.get_ner, {})
      self.assertEqual(([], []), self.test_processor.get_ner(""))
      self.assertEqual(
          (
              [("Nh", 0, 1)],
              ["Nh", "Nh", "O", "O", "O", "O", "O", "O", "O"],
          ),
          self.test_processor.get_ner(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 3 for calling the TestCnProcessor obj's underlying member method code with example usage: obj.test_get_ner() without return types