code: def test_ill_shape(self):
      net = RegistrationDownSampleBlock(
          spatial_dims=2, channels=2, pooling=True
      )
      with self.assertRaises(ValueError):
          net(torch.rand((1, 2, 3, 3)))
  
file_path: MONAI/tests/test_regunet_block.py
imports: from __future__ import annotations
  import unittest
  import torch
  from parameterized import parameterized
  from monai.networks import eval_mode
  from monai.networks.blocks.regunet_block import RegistrationDownSampleBlock, RegistrationExtractionBlock, RegistrationResidualConvBlock
label_desc: Use image node_id 2 for calling the TestRegistrationDownSampleBlock obj's underlying member method code with example usage: obj.test_ill_shape() without return types