code: def test_sha256sum(tmp_path):
      test_file = tmp_path / "test.file"
      test_file.write_text("TEST")
      assert (
          _sha256sum(test_file)
          == "94ee059335e587e501cc4bf90613e0814f00a7b08bc7c648fd865a2af6a22cc2"
      )
  
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 8 for calling a global function with example usage: test_sha256sum(tmp_path) without return types