code: def test_2(self):
      text = "Chất lượng tốt, đóng gói cẩn thận."
      actual = sentiment(text, domain="general")
      expected = "positive"
      self.assertEqual(expected, actual)
  
imports: from unittest import TestCase
  from underthesea.pipeline.sentiment import sentiment
label_desc: Use image node_id 3 for calling the TestSentiment obj's underlying member method code with example usage: obj.test_2() without return types