code: def testException(self):
      message = r"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
      excmess = f"RuntimeError: {message}"
      for np in (1, 2):
          for rank in range(0, np):
              args = ["--rank", str(rank), "--exception", message]
              status, stdout, stderr = self.execute(args, np)
              self.assertEqual(status, 1)
              self.assertMPIAbort(stdout, stderr, excmess)
  
imports: import sys
  import os
  import shlex
  import shutil
  import warnings
  import subprocess
  import unittest
  import mpi4py
label_desc: Use image node_id 3 for calling the TestRunScript obj's underlying member method code with example usage: obj.testException() without return types