'L{crefutil._InstanceMethod} raises L{AssertionError} to indicate it
should not be called.  This should not be possible with any of its API
clients, but is provided for helping to debug.'

def test_dontCallInstanceMethodsThatArentReady(self):

    self.assertRaises(AssertionError, crefutil._InstanceMethod('no_name', crefutil.NotKnown(), type))
