docstr: test the NO ACTION option which generally comes back as None
code: def test_nochange_onupdate_noaction(self):
      """test the NO ACTION option which generally comes back as None"""
  
      diffs = self._fk_opts_fixture(
          {"onupdate": "no action"}, {"onupdate": "no action"}
      )
      eq_(diffs, [])
  
imports: from sqlalchemy import Column
  from sqlalchemy import ForeignKeyConstraint
  from sqlalchemy import Integer
  from sqlalchemy import MetaData
  from sqlalchemy import String
  from sqlalchemy import Table
  from ._autogen_fixtures import AutogenFixtureTest
  from ...testing import combinations
  from ...testing import config
  from ...testing import eq_
  from ...testing import mock
  from ...testing import TestBase
label_desc: Use image node_id 11 for calling the AutogenerateFKOptionsTest obj's underlying member method code with example usage: obj.test_nochange_onupdate_noaction() without return types