code: def test_cache_download() -> None:
      # third party
      import pandas as pd
  
      # syft absolute
      from syft.util.util import PANDAS_DATA
      from syft.util.util import autocache
  
      encoding = {"bikes.csv": "ISO-8859-1"}
  
      pandas_csvs = {
          "bikes.csv": 310,
          "311-service-requests.csv": 111069,
          "weather_2012.csv": 8784,
          "popularity-contest": 2898,
      }
  
      for cache_file, size in pandas_csvs.items():
          f = autocache(f"{PANDAS_DATA}/{cache_file}")
          assert os.path.exists(f)
          enc = encoding.get(cache_file, "utf-8")
          df = pd.read_csv(f, encoding=enc)
          assert len(df) == size
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_cache_download() without return types