def test_handle_request_vote_reply_is_candidate_win_election(now):
now.return_value = 123456789
controller = mock.MagicMock()
id_ = 1
m = Machine(id_, controller)
m._controller.enqueue.reset_mock()
m.current_term = 5
m.voted_for = id_
m._state = constants.State.CANDIDATE
m._votes = 2
m.log = [log.LogEntry(m.current_term, '')]
msg = messages.RequestVoteResponseMessage(
src=0,
dst=1,
term=m.current_term,
)
m.handle_RequestVoteResponseMessage(msg)
assert m._state == constants.State.LEADER
# Assert messages sent to all other servers
enqueue_calls = m._controller.enqueue.mock_calls[:-1]
assert len(enqueue_calls) == len(m._servers) - 1
dsts = set()
for mock_call in enqueue_calls:
name, args, kwargs = mock_call
msg = args[0]
assert isinstance(msg, messages.AppendEntriesMessage)
assert msg.src == id_
dsts.add(msg.dst)
assert msg.term == m.current_term
assert msg.leader_id == id_
assert msg.prev_log_term == 5
assert msg.prev_log_index == 0
assert msg.entries == ()
assert msg.leader_commit == 0
assert set(range(len(m._servers))) - {id_} == dsts
call = m._controller.enqueue.mock_calls[-1]
name, args, kwargs = call
first_arg = args[0]
assert isinstance(first_arg, messages.LeaderTimeoutMessage)
assert first_arg.src == id_
assert first_arg.dst == id_
assert first_arg.term == m.current_term
assert first_arg.time == 123456789 + m._leader_timeout
def test_handle_request_vote_reply_is_candidate_stale_term():
controller = mock.MagicMock()
id_ = 1
m = Machine(id_, controller)
m._controller.enqueue.reset_mock()
m.current_term = 5
m.voted_for = id_
m._state = constants.State.CANDIDATE
m._votes = 2
msg = messages.RequestVoteResponseMessage(
src=0,
dst=1,
term=99,
)
m.handle_RequestVoteResponseMessage(msg)
assert m._state == constants.State.CANDIDATE
m._controller.enqueue.assert_not_called()