code: def test_normalize_functions():
      transform = normalize_transform()
      image = transforms.ToTensor()(get_image())
  
      normalized_img = transform(image)
      reversed_img = reverse_normalize(normalized_img)
  
      # Normalized image that's then reversed should be close to original
      assert (image - reversed_img).max() < 0.05
  
file_path: detecto/detecto/tests/test_utils.py
imports: import os
  import pandas
  import pytest
  import torch
  import torchvision
  from .helpers import get_image
  from detecto.utils import *
  from detecto.utils import _is_iterable
label_desc: Use image node_id 3 for calling a global function with example usage: test_normalize_functions() without return types