code: def test_exception(self) -> None:
      ret = test_exception_func()
      self.assertEqual(ret, None)
  
imports: import unittest
  import crypten
  import crypten.communicator
  import crypten.mpc
  import torch
  from crypten.config import cfg
label_desc: Use image node_id 2 for calling the TestContext obj's underlying member method code with example usage: obj.test_exception() without return types