code: def test_exception(self):
      # set up engine
      def _train_func(engine, batch):
          raise RuntimeError("test exception.")
  
      engine = Engine(_train_func)
  
      # set up testing handler
      stats_handler = StatsHandler()
      stats_handler.attach(engine)
  
      with self.assertRaises(RuntimeError):
          engine.run(range(3), max_epochs=2)
  
imports: from __future__ import annotations
  import logging
  import os
  import re
  import tempfile
  import unittest
  from io import StringIO
  import torch
  from ignite.engine import Engine, Events
  from parameterized import parameterized
  from monai.handlers import StatsHandler
label_desc: Use image node_id 5 for calling the TestHandlerStats obj's underlying member method code with example usage: obj.test_exception() without return types