code: def test_leaves(data):
      expect = Series(data).list.leaves
      ds = dgd.from_cudf(Series(data), 5)
      got = ds.list.leaves.compute().reset_index(drop=True)
      assert_eq(expect, got)
  
imports: import numpy
  import pandas
  import pytest
  from pandas.testing import assert_series_equal
  from dask import dataframe
  from cudf import DataFrame, Series, date_range
  from cudf.testing._utils import assert_eq, does_not_raise
  import dask_cudf
label_desc: Use image node_id 30 for calling a global function with example usage: test_leaves(data) without return types