code: def fixture_img_form_data(img_file: str):
      with open(img_file, "rb") as f1, open(img_file, "rb") as f2:
          form = aiohttp.FormData()
          form.add_field(
              "original", f1.read(), content_type="image/bmp"
          )
          form.add_field(
              "compared", f2.read(), content_type="image/bmp"
          )
      yield form
  
file_path: BentoML/tests/e2e/bento_server_http/tests/test_io.py
imports: from __future__ import annotations
  import io
  import json
  from typing import TYPE_CHECKING
  import aiohttp
  import numpy
  import pytest
  from bentoml.testing.utils import async_request
  from bentoml.testing.utils import parse_multipart_form
label_desc: Use image node_id 1 for calling a global function with example usage: fixture_img_form_data(img_file) without return types