from AccessControl.SecurityManagement import newSecurityManager
from AccessControl.SecurityManager import setSecurityPolicy
from Testing.makerequest import makerequest
from Products.CMFCore.tests.base.security import PermissiveSecurityPolicy, AnonymousUser, OmnipotentUser

_policy=PermissiveSecurityPolicy()
_oldpolicy=setSecurityPolicy(_policy)
newSecurityManager(None, OmnipotentUser().__of__(app))
app=makerequest(app)

# 'app' is the Applicaton root object, / in the ZMI