code: def test_get_file_created_by_app(self, test_client):
      app, _, _ = gr.Interface(
          lambda s: s.name, gr.File(), gr.File()
      ).launch(prevent_thread_lock=True)
      client = TestClient(app)
      with open("test/test_files/alphabet.txt", "rb") as f:
          file_response = test_client.post(
              "/upload", files={"files": f}
          )
      response = client.post(
          "/api/predict/",
          json={
              "data": [
                  {
                      "path": file_response.json()[0],
                      "size": os.path.getsize(
                          "test/test_files/alphabet.txt"
                      ),
                  }
              ],
              "fn_index": 0,
              "session_hash": "_",
          },
      ).json()
      created_file = response["data"][0]["path"]
      file_response = client.get(f"/file={created_file}")
      assert file_response.is_success
  
      backwards_compatible_file_response = client.get(
          f"/file/{created_file}"
      )
      assert backwards_compatible_file_response.is_success
  
      file_response_with_full_range = client.get(
          f"/file={created_file}", headers={"Range": "bytes=0-"}
      )
      assert file_response_with_full_range.is_success
      assert file_response.text == file_response_with_full_range.text
  
      file_response_with_partial_range = client.get(
          f"/file={created_file}", headers={"Range": "bytes=0-10"}
      )
      assert file_response_with_partial_range.is_success
      assert len(file_response_with_partial_range.text) == 11
  
imports: import functools
  import os
  import tempfile
  from contextlib import asynccontextmanager, closing
  from unittest import mock
  import gradio_client
  import numpy
  import pandas
  import pytest
  import starlette.routing
  from fastapi import FastAPI
  from fastapi.testclient import TestClient
  from gradio_client import media_data
  import gradio
  from gradio import Blocks, Button, Interface, Number, Textbox, close_all, routes, wasm_utils
  from gradio.route_utils import FnIndexInferError
label_desc: Use image node_id 16 for calling the TestRoutes obj's underlying member method code with example usage: obj.test_get_file_created_by_app(test_client) without return types