'Test lambda to compute the most permissive ACL'

def testMostPermissive(self):

    p = current.auth.permission
    self.assertEqual(p.most_permissive([(p.NONE, p.READ), (p.READ, p.READ)]), (p.READ, p.READ))
    self.assertEqual(p.most_permissive([(p.NONE, p.ALL), (p.CREATE, p.ALL), (p.READ, p.ALL)]), ((p.READ | p.CREATE), p.ALL))
