docstr: Mapper strategy defaults load as expected
  (compare to rest of DefaultStrategyOptionsTest downgrade tests).
docstr_tok: ["Mapper","strategy","defaults","load","as","expected","(","compare","to","rest","of","DefaultStrategyOptionsTest","downgrade","tests",")","."]
code: def test_downgrade_baseline(self):
      """Mapper strategy defaults load as expected
      (compare to rest of DefaultStrategyOptionsTest downgrade tests).
      """
      sess = self._downgrade_fixture()
      users = []
  
      # test _downgrade_fixture mapper defaults, 3 queries (2 subquery
      # loads).
      def go():
          users[:] = (
              sess.query(self.classes.User)
              .order_by(self.classes.User.id)
              .all()
          )
  
      self.assert_sql_count(testing.db, go, 3)
  
      # all loaded with no additional sql
      self._assert_fully_loaded(users)
  
imports: import sqlalchemy
  from sqlalchemy import testing
  from sqlalchemy import util
  from sqlalchemy.orm import defaultload
  from sqlalchemy.orm import joinedload
  from sqlalchemy.orm import relationship
  from sqlalchemy.orm import subqueryload
  from sqlalchemy.testing import eq_
  from sqlalchemy.testing.assertions import expect_raises_message
  from sqlalchemy.testing.fixtures import fixture_session
  from test.orm import _fixtures
label_desc: Use image node_id 5 for calling the DefaultStrategyOptionsTest obj's underlying member method code with example usage: obj.test_downgrade_baseline() without return types