code: def test_arbitrary_url_file_download(eld):
      """Verify that arbitrary URLs work for data file downloads."""
      file = eld.get_data(url="http://www.google.com/robots.txt")
      assert os.path.isfile(file)
  
imports: import os
  import requests
  import pytest
  import numpy
  import rasterio
  import geopandas
  import earthpy.io
label_desc: Use image node_id 17 for calling a global function with example usage: test_arbitrary_url_file_download(eld) without return types