code: def test_feather_writer(tmpdir, pdf, gdf):
      pdf_fname = tmpdir.join("pdf.feather")
      gdf_fname = tmpdir.join("gdf.feather")
  
      pdf.to_feather(pdf_fname)
      gdf.to_feather(gdf_fname)
  
      assert os.path.exists(pdf_fname)
      assert os.path.exists(gdf_fname)
  
      expect = pa.feather.read_table(pdf_fname)
      got = pa.feather.read_table(gdf_fname)
  
      assert pa.Table.equals(expect, got)
  
file_path: cudf/python/cudf/cudf/tests/test_feather.py
imports: import os
  from string import ascii_letters
  import numpy
  import pandas
  import pyarrow
  import pytest
  import cudf
  from cudf.testing._utils import NUMERIC_TYPES, assert_eq
label_desc: Use image node_id 5 for calling a global function with example usage: test_feather_writer(tmpdir, pdf, gdf) without return types