code: def test_no_froms(self):
      query = select(1)
  
      froms, start = find_unmatching_froms(query)
      assert not froms
  
imports: from sqlalchemy import column
  from sqlalchemy import delete
  from sqlalchemy import func
  from sqlalchemy import Integer
  from sqlalchemy import JSON
  from sqlalchemy import select
  from sqlalchemy import sql
  from sqlalchemy import table
  from sqlalchemy import testing
  from sqlalchemy import true
  from sqlalchemy import update
  from sqlalchemy.testing import config
  from sqlalchemy.testing import engines
  from sqlalchemy.testing import expect_warnings
  from sqlalchemy.testing import fixtures
  from sqlalchemy.testing import is_
  from sqlalchemy.testing.schema import Column
  from sqlalchemy.testing.schema import Table
label_desc: Use image node_id 21 for calling the TestFindUnmatchingFroms obj's underlying member method code with example usage: obj.test_no_froms() without return types