code: def test_read_csv(s3_base, s3so):
      with s3_context(
          s3_base=s3_base,
          bucket="daskcsv",
          files={"a.csv": b"a,b\n1,2\n3,4\n"},
      ):
          df = dask_cudf.read_csv(
              "s3://daskcsv/*.csv",
              chunksize="50 B",
              storage_options=s3so,
          )
          assert df.a.sum().compute() == 4
  
file_path: cudf/python/dask_cudf/dask_cudf/io/tests/test_s3.py
imports: import os
  import socket
  from contextlib import contextmanager
  from io import BytesIO
  import pandas
  import pyarrow.fs
  import pytest
  import dask_cudf
label_desc: Use image node_id 7 for calling a global function with example usage: test_read_csv(s3_base, s3so) without return types