code: def test_simple(self):
      data_config = load_dataconfig("segmentation", "shapenet")
      dataset_cls = get_dataset_class(data_config)
      self.assertEqual(
          "<class 'torch_points3d.datasets.segmentation.shapenet.ShapeNetDataset'>",
          str(dataset_cls),
      )
  
file_path: torch-points3d/test/test_dataset_factory.py
imports: import os
  import sys
  import unittest
  import numpy
  import omegaconf
  from omegaconf import OmegaConf
  import torch
  from torch_geometric.data import Data
  from torch_points3d.datasets.segmentation.shapenet import ShapeNetDataset
  from torch_points3d.datasets.dataset_factory import get_dataset_class
label_desc: Use image node_id 1 for calling the TestBaseFactory obj's underlying member method code with example usage: obj.test_simple() without return types