code: def test_init_creation_date_format():
      """
      Test creation_date is in correct format.
      """
      forecaster = ForecasterEquivalentDate(
          offset=5, n_offsets=2, agg_func=np.mean, forecaster_id=None
      )
      assert (
          re.match(
              r"\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}",
              forecaster.creation_date,
          )
          is not None
      )
  
file_path: skforecast/skforecast/ForecasterBaseline/tests/test_init.py
imports: import sys
  import re
  import pytest
  import numpy
  import skforecast
  from skforecast.ForecasterBaseline import ForecasterEquivalentDate
label_desc: Use image node_id 3 for calling a global function with example usage: test_init_creation_date_format() without return types