code: def test_get_value(self):
      self.assertEqual("今天天气很好。", sample.get_value("x"))
      new_sample = UTCnSample({"x": ""})
      self.assertEqual("", new_sample.get_value("x"))
  
imports: import unittest
  from textflint.input.component.sample.utcn_sample import *
label_desc: Use image node_id 1 for calling the TestUTCnSample obj's underlying member method code with example usage: obj.test_get_value() without return types