docstr: Verifies that creating a connection in autocommit mode works.
  2.5.3 introduced a regression so that these could no longer
  be created.
code: def test_auto_commit(self):
      """
      Verifies that creating a connection in autocommit mode works.
      2.5.3 introduced a regression so that these could no longer
      be created.
      """
      with memory_database(isolation_level=None) as con:
          self.assertIsNone(con.isolation_level)
          self.assertFalse(con.in_transaction)
  
imports: import datetime
  import unittest
  import sqlite3
  import weakref
  import functools
  from test import support
  from unittest.mock import patch
  from .util import memory_database, cx_limit
  from .util import MemoryDatabaseMixin
label_desc: Use image node_id 17 for calling the RegressionTests obj's underlying member method code with example usage: obj.test_auto_commit() without return types