code: def test_hetero_shape_handling(self):
      # raise error with high dimensionality and
      # shape mismatch
      a = np.zeros((3, 3, 7, 3), dtype=int)
      with assert_raises(ValueError):
          fill_diagonal(a, 2)
  
imports: import functools
  from unittest import expectedFailure, skipIf
  from pytest import raises
  from torch.testing._internal.common_utils import instantiate_parametrized_tests, parametrize, run_tests, TEST_WITH_TORCHDYNAMO, TestCase, xpassIfTorchDynamo
label_desc: Use image node_id 7 for calling the TestFillDiagonal obj's underlying member method code with example usage: obj.test_hetero_shape_handling() without return types