code: def test_unique(data):
      expect = Series(data).list.unique()
      ds = dgd.from_cudf(Series(data), 5)
      assert_eq(expect, ds.list.unique().compute())
  
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 26 for calling a global function with example usage: test_unique(data) without return types