code: def test_no_runs_without_start_date(timetable):
      next_info = timetable.next_dagrun_info(
          last_automated_data_interval=None,
          restriction=TimeRestriction(
              earliest=None, latest=None, catchup=False
          ),
      )
      assert next_info is None
  
file_path: airflow/tests/timetables/test_continuous_timetable.py
imports: from __future__ import annotations
  import pendulum
  import pytest
  import time_machine
  from airflow.timetables.base import DataInterval, TimeRestriction
  from airflow.timetables.simple import ContinuousTimetable
label_desc: Use image node_id 3 for calling a global function with example usage: test_no_runs_without_start_date(timetable) without return types