code: def test_tz_convert(data):
      expect = Series(data).dt.tz_convert("US/Pacific")
      got = dgd.from_cudf(Series(data), 2).dt.tz_convert("US/Pacific")
      dd.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 40 for calling a global function with example usage: test_tz_convert(data) without return types