code: def test_get_key(b, key, version_id):
      url = "s3://%s/%s" % (b, key)
      if version_id:
          url += "?versionId=" + version_id
      providers = get_test_providers(
          url, reload=True
      )  # to verify having credentials to access
      downloader = providers.get_provider(url).get_downloader(url)
      downloader._establish_session(url)
  
      keys = [
          f(key, version_id=version_id)
          for f in (
              downloader._bucket.get_key,
              downloader._get_key_via_get,
          )
      ]
      # key1 != key2 probably due to some reasons, so we will just compare fields we care about
      for f in [
          "name",
          "version_id",
          "size",
          "content_type",
          "last_modified",
      ]:
          vals = [getattr(k, f) for k in keys]
          assert_equal(
              *vals, msg="%s differs between two keys: %s" % (f, vals)
          )
  
imports: import os
  from unittest.mock import patch
  import pytest
  from ...downloaders.base import DownloadError
  from ...support import path
  from ...support.exceptions import AccessDeniedError
  from ...tests.utils_pytest import SkipTest, assert_equal, assert_raises, integration, skip_if_no_module, skip_if_no_network, swallow_outputs, turtle, use_cassette, with_tempfile, with_testsui
  from ...utils import md5sum
  from ..providers import Providers
  from ..s3 import S3Authenticator, S3Downloader
  from .test_http import check_download_external_url
  from .utils import get_test_providers
label_desc: Use image node_id 9 for calling a global function with example usage: test_get_key(b, key, version_id) without return types