def test_process_message_req_view_change(message_req_service: MessageReqService,
external_bus, data: ConsensusSharedData,
view_change_message: ViewChange):
frm = "frm"
digest = view_change_digest(view_change_message)
message_req = MessageReq(**{
f.MSG_TYPE.nm: VIEW_CHANGE,
f.PARAMS.nm: {f.INST_ID.nm: data.inst_id,
f.DIGEST.nm: digest,
f.NAME.nm: frm},
})
data.view_change_votes.add_view_change(view_change_message, frm)
external_bus.process_incoming(message_req, frm)
assert len(external_bus.sent_messages) == 1
assert external_bus.sent_messages[0] == (MessageRep(message_req.msg_type,
message_req.params,
view_change_message._asdict()),
[frm])
def view_change_digest(msg: ViewChange) -> str:
msg_as_dict = msg._asdict()
# msg_as_dict['checkpoints'] = [cp.__dict__ for cp in msg_as_dict['checkpoints']]
serialized = JsonSerializer().dumps(msg_as_dict)
return sha256(serialized).hexdigest()
