Plone debug mode login

debug_login.py

from AccessControl.SecurityManagement import newSecurityManager
from Testing.makerequest import makerequest
from zope.component.hooks import setSite

def get_manager(app):
    for uid in app.acl_users.users.listUserIds():
        user = app.acl_users.users.getUser(uid)
        if 'Manager' in user.getRoles():
            return user

def login(app, manager_id=None, manager=None):
    if manager:
        user = manager
    elif manager_id:
        user = app.acl_users.getUserById(manager_id).__of__(app.acl_users)
    else:
        raise TypeError("Must specify either a 'manager' or 'manager_id' argument!")
    newSecurityManager(None, user)
    return makerequest(app)

if __name__=='__main__':
    manager = get_manager(app)
    if manager:
        app = login(app, manager=manager)
    else:
        print "Could not get manager user!"
    
    portal = (app.objectValues('Plone Site')+[None])[0]
    if portal:
        setSite(portal)
    else:
        print "Could not get portal!"