def test_traceback_no_recursion_index(self):

       def do_stuff():

           raise RuntimeError

       def reraise_me():

           import sys

           exc, val, tb = sys.exc_info()

           raise exc, val, tb

       def f(n):

           try:

               do_stuff()

           except:

               reraise_me()

       excinfo = py.test.raises(RuntimeError, f, 8)

       traceback = excinfo.traceback 

->     recindex = traceback.recursionindex() 

       assert recindex is None