code: def test__load_grid_geojson_old_file(stat_mock, tmp_path):
      return_timestamp = MagicMock()
      return_timestamp.st_mtime = (
          datetime.utcnow() - timedelta(days=2)
      ).timestamp()
      stat_mock.return_value = return_timestamp
      tmp_path.joinpath("files.geojson").touch()
      grids = _load_grid_geojson(target_directory=tmp_path)
      assert sorted(grids) == ["features", "name", "type"]
  
file_path: pyproj/test/test_sync.py
imports: from datetime import datetime, timedelta
  from unittest.mock import MagicMock, patch
  from urllib.error import URLError
  import pytest
  from pyproj.aoi import BBox
  from pyproj.sync import _download_resource_file, _load_grid_geojson, _sha256sum, get_transform_grid_list
label_desc: Use image node_id 13 for calling a global function with example usage: test__load_grid_geojson_old_file(stat_mock, tmp_path) without return types