code: def test_string(self):
      # text_factory defaults to str
      row = self.con.execute("select value from test").fetchone()
      self.assertIs(type(row[0]), str)
      self.assertEqual(row[0], "a\x00b")
  
imports: import unittest
  import sqlite3
  from collections.abc import Sequence
  from .util import memory_database
  from .util import MemoryDatabaseMixin
label_desc: Use image node_id 3 for calling the TextFactoryTestsWithEmbeddedZeroBytes obj's underlying member method code with example usage: obj.test_string() without return types