code: def test_ill_cache(self):
      with self.assertWarns(UserWarning):
          RandAffine(cache_grid=True)
      with self.assertWarns(UserWarning):
          RandAffine(cache_grid=True, spatial_size=(1, 1, -1))
  
file_path: MONAI/tests/test_rand_affine.py
imports: from __future__ import annotations
  import unittest
  import numpy
  import torch
  from parameterized import parameterized
  from monai.transforms import RandAffine
  from monai.utils.type_conversion import convert_data_type
  from tests.lazy_transforms_utils import test_resampler_lazy
  from tests.utils import TEST_NDARRAYS_ALL, assert_allclose, is_tf32_env
label_desc: Use image node_id 2 for calling the TestRandAffine obj's underlying member method code with example usage: obj.test_ill_cache() without return types