class_docstr: Test VIIRS SDR downloading.
class_docstr_tok: ["Test","VIIRS","SDR","downloading","."]
code: def _assert_file_contents(filenames):
      for fn in filenames:
          with open(fn, "rb") as fake_hdf5_file:
              assert fake_hdf5_file.read().decode(
                  "ascii"
              ) == os.path.basename(fn)
  
imports: from __future__ import annotations
  import contextlib
  import io
  import os
  import sys
  import tarfile
  import unittest
  from collections import defaultdict
  from unittest import mock
  import pytest
label_desc: Use image node_id 8 for calling the TestVIIRSSDRDemoDownload obj's underlying member method code with example usage: obj._assert_file_contents(filenames) without return types