code: def test_convert_remote_files_to_fsspec_storage_options(open_files):
      """Test convertion of remote files to fsspec objects.
  
      Case with storage options given.
      """
      from satpy.utils import convert_remote_files_to_fsspec
  
      filenames = ["s3://tmp/file1.nc"]
      storage_options = {"anon": True}
  
      _ = convert_remote_files_to_fsspec(
          filenames, storage_options=storage_options
      )
  
      open_files.assert_called_once_with(filenames, **storage_options)
  
imports: from __future__ import annotations
  import datetime
  import logging
  import typing
  import unittest
  import warnings
  from math import sqrt
  from unittest import mock
  import dask.array
  import numpy
  import pytest
  import xarray
  from satpy.tests.utils import xfail_skyfield_unstable_numpy2
  from satpy.utils import angle2xyz, get_legacy_chunk_size, get_satpos, import_error_helper, lonlat2xyz, proj_units_to_meters, xyz2angle, xyz2lonlat
label_desc: Use image node_id 18 for calling a global function with example usage: test_convert_remote_files_to_fsspec_storage_options(open_files) without return types