code: def test_wrong_sigma(self):
      with self.assertRaises(ValueError):
          gaussian_1d(1, -10)
      with self.assertRaises(NotImplementedError):
          gaussian_1d(1, 10, "wrong_arg")
  
file_path: MONAI/tests/test_gaussian.py
imports: from __future__ import annotations
  import unittest
  import numpy
  import torch
  from parameterized import parameterized
  from monai.networks.layers.convutils import gaussian_1d
label_desc: Use image node_id 4 for calling the TestGaussian1d obj's underlying member method code with example usage: obj.test_wrong_sigma() without return types