code: def test_time_rolling_repr():
      res = repr(dts.rolling("4s"))
      assert res == "Rolling [window=4s,center=False,win_type=freq]"
  
imports: from __future__ import annotations
  import contextlib
  import datetime
  import numpy
  import pandas
  import pytest
  import dask.dataframe
  from dask.dataframe._compat import PANDAS_GE_210
  from dask.dataframe.utils import assert_eq
label_desc: Use image node_id 15 for calling a global function with example usage: test_time_rolling_repr() without return types