code: def test_no_dir_no_transform_fails(self):
      with self.assertRaises(ValueError):
          LightlyDataset(
              None, transform=torchvision.transforms.ToTensor()
          )
  
imports: import os
  import shutil
  import tempfile
  import unittest
  from typing import List, Tuple
  import numpy
  import torchvision
  from PIL.Image import Image
  from lightly.data import LightlyDataset
  from lightly.data._utils import check_images
label_desc: Use image node_id 18 for calling the TestLightlyDataset obj's underlying member method code with example usage: obj.test_no_dir_no_transform_fails() without return types