code: def test_decode(self):
      expected = unicode("foo")
      self.assertEqual(_decode("foo"), expected)
      self.assertEqual(_decode("foo"), expected)
      self.assertEqual(_decode(b"foo"), expected)
  
imports: import unittest
  from ..utils import _decode
  from six import text_type
label_desc: Use image node_id 3 for calling the UtilsTest obj's underlying member method code with example usage: obj.test_decode() without return types