code: def test_roll_series_with_no_gap(window_length, window_series_pd):
      actual_rolling = roll_series_with_gap(
          window_series_pd,
          window_length,
          gap=0,
          min_periods=1,
      ).mean()
      expected_rolling = window_series_pd.rolling(
          window_length, min_periods=1
      ).mean()
  
      pd.testing.assert_series_equal(actual_rolling, expected_rolling)
  
imports: from unittest.mock import patch
  import numpy
  import pandas
  import pytest
  from featuretools.primitives import RollingCount, RollingMax, RollingMean, RollingMin, RollingSTD, RollingTrend
  from featuretools.primitives.standard.transform.time_series.utils import _get_rolled_series_without_gap, apply_roll_with_offset_gap, roll_series_with_gap
  from featuretools.tests.primitive_tests.utils import get_number_from_offset
label_desc: Use image node_id 6 for calling a global function with example usage: test_roll_series_with_no_gap(window_length, window_series_pd) without return types