code: def test_predict():
      class Dummy:
          raw_body = url
  
      server = ChaliceServer(
          "image-classification",
          model_path=MODEL_PATH,
          model_loader=model_loader,
          preprocess_fn=preprocess,
          postprocess_fn=postprocess,
      )
      server.app.current_request = Dummy
      assert isinstance(server.predict(), str)
  
file_path: chitra/tests/serve/cloud/test_chalice_server.py
imports: import io
  import os
  import numpy
  import torch
  from chalice import Chalice
  from timm import create_model
  from chitra.core import load_imagenet_labels
  from chitra.image import Chitra
  from chitra.serve.cloud import ChaliceServer
label_desc: Use image node_id 6 for calling a global function with example usage: test_predict() without return types