code: def test_feature_takes_timedelta_string(es):
      feature = Feature(
          Feature(es["log"].ww["id"]),
          parent_dataframe_name="customers",
          use_previous="1 day",
          primitive=Count,
      )
      assert feature.use_previous == Timedelta(1, "d")
  
imports: import pandas
  import pytest
  from dateutil.relativedelta import relativedelta
  from featuretools.entityset import Timedelta
  from featuretools.feature_base import Feature
  from featuretools.primitives import Count
  from featuretools.tests.testing_utils import to_pandas
  from featuretools.utils.wrangle import _check_timedelta
label_desc: Use image node_id 8 for calling a global function with example usage: test_feature_takes_timedelta_string(es) without return types