code: def test_invalid_cause(self):
      try:
          raise IndexError from 5
      except TypeError as e:
          self.assertIn("exception cause", str(e))
      else:
          self.fail("No exception raised")
  
imports: from test import support
  import sys
  import types
  import unittest
label_desc: Use image node_id 2 for calling the TestCause obj's underlying member method code with example usage: obj.test_invalid_cause() without return types