async def test_handle_subscription():
async with PubsubFactory.create_batch_with_floodsub(1) as pubsubs_fsub:
assert len(pubsubs_fsub[0].peer_topics) == 0
sub_msg_0 = rpc_pb2.RPC.SubOpts(subscribe=True, topicid=TESTING_TOPIC)
peer_ids = [IDFactory() for _ in range(2)]
# Test: One peer is subscribed
pubsubs_fsub[0].handle_subscription(peer_ids[0], sub_msg_0)
assert (len(pubsubs_fsub[0].peer_topics) == 1
and TESTING_TOPIC in pubsubs_fsub[0].peer_topics)
assert len(pubsubs_fsub[0].peer_topics[TESTING_TOPIC]) == 1
assert peer_ids[0] in pubsubs_fsub[0].peer_topics[TESTING_TOPIC]
# Test: Another peer is subscribed
pubsubs_fsub[0].handle_subscription(peer_ids[1], sub_msg_0)
assert len(pubsubs_fsub[0].peer_topics) == 1
assert len(pubsubs_fsub[0].peer_topics[TESTING_TOPIC]) == 2
assert peer_ids[1] in pubsubs_fsub[0].peer_topics[TESTING_TOPIC]
# Test: Subscribe to another topic
another_topic = "ANOTHER_TOPIC"
sub_msg_1 = rpc_pb2.RPC.SubOpts(subscribe=True, topicid=another_topic)
pubsubs_fsub[0].handle_subscription(peer_ids[0], sub_msg_1)
assert len(pubsubs_fsub[0].peer_topics) == 2
assert another_topic in pubsubs_fsub[0].peer_topics
assert peer_ids[0] in pubsubs_fsub[0].peer_topics[another_topic]
# Test: unsubscribe
unsub_msg = rpc_pb2.RPC.SubOpts(subscribe=False, topicid=TESTING_TOPIC)
pubsubs_fsub[0].handle_subscription(peer_ids[0], unsub_msg)
assert peer_ids[0] not in pubsubs_fsub[0].peer_topics[TESTING_TOPIC]
async def test_re_subscribe():
async with PubsubFactory.create_batch_with_floodsub(1) as pubsubs_fsub:
await pubsubs_fsub[0].subscribe(TESTING_TOPIC)
assert TESTING_TOPIC in pubsubs_fsub[0].topic_ids
await pubsubs_fsub[0].subscribe(TESTING_TOPIC)
assert TESTING_TOPIC in pubsubs_fsub[0].topic_ids
async def test_subscribe_and_publish():
async with PubsubFactory.create_batch_with_floodsub(1) as pubsubs_fsub:
pubsub = pubsubs_fsub[0]
list_data = [b"d0", b"d1"]
event_receive_data_started = trio.Event()
async def publish_data(topic):
await event_receive_data_started.wait()
for data in list_data:
await pubsub.publish(topic, data)
async def receive_data(topic):
i = 0
event_receive_data_started.set()
assert topic not in pubsub.topic_ids
subscription = await pubsub.subscribe(topic)
async with subscription:
assert topic in pubsub.topic_ids
async for msg in subscription:
assert msg.data == list_data[i]
i += 1
if i == len(list_data):
break
assert topic not in pubsub.topic_ids
async with trio.open_nursery() as nursery:
nursery.start_soon(receive_data, TESTING_TOPIC)
nursery.start_soon(publish_data, TESTING_TOPIC)
async def test_subscribe_and_publish_full_channel():
async with PubsubFactory.create_batch_with_floodsub(1) as pubsubs_fsub:
pubsub = pubsubs_fsub[0]
extra_data_0 = b"extra_data_0"
extra_data_1 = b"extra_data_1"
# Test: Subscription channel is of size `SUBSCRIPTION_CHANNEL_SIZE`.
# When the channel is full, new received messages are dropped.
# After the channel has empty slot, the channel can receive new messages.
# Assume `SUBSCRIPTION_CHANNEL_SIZE` is smaller than `2**(4*8)`.
list_data = [
i.to_bytes(4, "big") for i in range(SUBSCRIPTION_CHANNEL_SIZE)
]
# Expect `extra_data_0` is dropped and `extra_data_1` is appended.
expected_list_data = list_data + [extra_data_1]
subscription = await pubsub.subscribe(TESTING_TOPIC)
for data in list_data:
await pubsub.publish(TESTING_TOPIC, data)
# Publish `extra_data_0` which should be dropped since the channel is already full.
await pubsub.publish(TESTING_TOPIC, extra_data_0)
# Consume a message and there is an empty slot in the channel.
assert (await subscription.get()).data == expected_list_data.pop(0)
# Publish `extra_data_1` which should be appended to the channel.
await pubsub.publish(TESTING_TOPIC, extra_data_1)
for expected_data in expected_list_data:
assert (await subscription.get()).data == expected_data
async def pubsubs(num_hosts, security_protocol, is_gossipsub, is_pubsub_signing_strict):
if is_gossipsub:
yield PubsubFactory.create_batch_with_gossipsub(
num_hosts,
security_protocol=security_protocol,
strict_signing=is_pubsub_signing_strict,
)
else:
yield PubsubFactory.create_batch_with_floodsub(
num_hosts, security_protocol, strict_signing=is_pubsub_signing_strict
)
async def test_strict_signing_failed_validation(monkeypatch):
async with PubsubFactory.create_batch_with_floodsub(
2, strict_signing=True) as pubsubs_fsub:
msg = make_pubsub_msg(
origin_id=pubsubs_fsub[0].my_id,
topic_ids=[TESTING_TOPIC],
data=TESTING_DATA,
seqno=b"\x00" * 8,
)
priv_key = pubsubs_fsub[0].sign_key
signature = priv_key.sign(PUBSUB_SIGNING_PREFIX.encode() +
msg.SerializeToString())
event = trio.Event()
def _is_msg_seen(msg):
return False
# Use router publish to check if `push_msg` succeed.
async def router_publish(*args, **kwargs):
await trio.hazmat.checkpoint()
# The event will only be set if `push_msg` succeed.
event.set()
monkeypatch.setattr(pubsubs_fsub[0], "_is_msg_seen", _is_msg_seen)
monkeypatch.setattr(pubsubs_fsub[0].router, "publish", router_publish)
# Test: no signature attached in `msg`
await pubsubs_fsub[0].push_msg(pubsubs_fsub[0].my_id, msg)
await trio.sleep(0.01)
assert not event.is_set()
# Test: `msg.key` does not match `msg.from_id`
msg.key = pubsubs_fsub[1].host.get_public_key().serialize()
msg.signature = signature
await pubsubs_fsub[0].push_msg(pubsubs_fsub[0].my_id, msg)
await trio.sleep(0.01)
assert not event.is_set()
# Test: invalid signature
msg.key = pubsubs_fsub[0].host.get_public_key().serialize()
msg.signature = b"\x12" * 100
await pubsubs_fsub[0].push_msg(pubsubs_fsub[0].my_id, msg)
await trio.sleep(0.01)
assert not event.is_set()
# Finally, assert the signature indeed will pass validation
msg.key = pubsubs_fsub[0].host.get_public_key().serialize()
msg.signature = signature
await pubsubs_fsub[0].push_msg(pubsubs_fsub[0].my_id, msg)
await trio.sleep(0.01)
assert event.is_set()
async def test_strict_signing():
async with PubsubFactory.create_batch_with_floodsub(
2, strict_signing=True) as pubsubs_fsub:
await connect(pubsubs_fsub[0].host, pubsubs_fsub[1].host)
await pubsubs_fsub[0].subscribe(TESTING_TOPIC)
await pubsubs_fsub[1].subscribe(TESTING_TOPIC)
await trio.sleep(1)
await pubsubs_fsub[0].publish(TESTING_TOPIC, TESTING_DATA)
await trio.sleep(1)
assert len(pubsubs_fsub[0].seen_messages) == 1
assert len(pubsubs_fsub[1].seen_messages) == 1
async def test_peers_subscribe():
async with PubsubFactory.create_batch_with_floodsub(2) as pubsubs_fsub:
await connect(pubsubs_fsub[0].host, pubsubs_fsub[1].host)
await pubsubs_fsub[0].subscribe(TESTING_TOPIC)
# Yield to let 0 notify 1
await trio.sleep(1)
assert pubsubs_fsub[0].my_id in pubsubs_fsub[1].peer_topics[
TESTING_TOPIC]
await pubsubs_fsub[0].unsubscribe(TESTING_TOPIC)
# Yield to let 0 notify 1
await trio.sleep(1)
assert pubsubs_fsub[0].my_id not in pubsubs_fsub[1].peer_topics[
TESTING_TOPIC]
async def create(cls, number: int) -> AsyncIterator[Tuple["DummyAccountNode", ...]]:
"""
Create a new DummyAccountNode and attach a libp2p node, a floodsub, and
a pubsub instance to this new node.
We use create as this serves as a factory function and allows us
to use async await, unlike the init function
"""
async with PubsubFactory.create_batch_with_floodsub(number) as pubsubs:
async with AsyncExitStack() as stack:
dummy_acount_nodes = tuple(cls(pubsub) for pubsub in pubsubs)
for node in dummy_acount_nodes:
await stack.enter_async_context(background_trio_service(node))
yield dummy_acount_nodes
async def test_set_and_remove_topic_validator():
async with PubsubFactory.create_batch_with_floodsub(1) as pubsubs_fsub:
is_sync_validator_called = False
def sync_validator(peer_id, msg):
nonlocal is_sync_validator_called
is_sync_validator_called = True
is_async_validator_called = False
async def async_validator(peer_id, msg):
nonlocal is_async_validator_called
is_async_validator_called = True
await trio.hazmat.checkpoint()
topic = "TEST_VALIDATOR"
assert topic not in pubsubs_fsub[0].topic_validators
# Register sync validator
pubsubs_fsub[0].set_topic_validator(topic, sync_validator, False)
assert topic in pubsubs_fsub[0].topic_validators
topic_validator = pubsubs_fsub[0].topic_validators[topic]
assert not topic_validator.is_async
# Validate with sync validator
topic_validator.validator(peer_id=IDFactory(), msg="msg")
assert is_sync_validator_called
assert not is_async_validator_called
# Register with async validator
pubsubs_fsub[0].set_topic_validator(topic, async_validator, True)
is_sync_validator_called = False
assert topic in pubsubs_fsub[0].topic_validators
topic_validator = pubsubs_fsub[0].topic_validators[topic]
assert topic_validator.is_async
# Validate with async validator
await topic_validator.validator(peer_id=IDFactory(), msg="msg")
assert is_async_validator_called
assert not is_sync_validator_called
# Remove validator
pubsubs_fsub[0].remove_topic_validator(topic)
assert topic not in pubsubs_fsub[0].topic_validators
async def test_re_unsubscribe():
async with PubsubFactory.create_batch_with_floodsub(1) as pubsubs_fsub:
# Unsubscribe from topic we didn't even subscribe to
assert "NOT_MY_TOPIC" not in pubsubs_fsub[0].topic_ids
await pubsubs_fsub[0].unsubscribe("NOT_MY_TOPIC")
assert "NOT_MY_TOPIC" not in pubsubs_fsub[0].topic_ids
await pubsubs_fsub[0].subscribe(TESTING_TOPIC)
assert TESTING_TOPIC in pubsubs_fsub[0].topic_ids
await pubsubs_fsub[0].unsubscribe(TESTING_TOPIC)
assert TESTING_TOPIC not in pubsubs_fsub[0].topic_ids
await pubsubs_fsub[0].unsubscribe(TESTING_TOPIC)
assert TESTING_TOPIC not in pubsubs_fsub[0].topic_ids
async def test_get_hello_packet():
async with PubsubFactory.create_batch_with_floodsub(1) as pubsubs_fsub:
def _get_hello_packet_topic_ids():
packet = pubsubs_fsub[0].get_hello_packet()
return tuple(sub.topicid for sub in packet.subscriptions)
# Test: No subscription, so there should not be any topic ids in the hello packet.
assert len(_get_hello_packet_topic_ids()) == 0
# Test: After subscriptions, topic ids should be in the hello packet.
topic_ids = ["t", "o", "p", "i", "c"]
for topic in topic_ids:
await pubsubs_fsub[0].subscribe(topic)
topic_ids_in_hello = _get_hello_packet_topic_ids()
for topic in topic_ids:
assert topic in topic_ids_in_hello
async def test_validate_msg(is_topic_1_val_passed, is_topic_2_val_passed):
async with PubsubFactory.create_batch_with_floodsub(1) as pubsubs_fsub:
def passed_sync_validator(peer_id, msg):
return True
def failed_sync_validator(peer_id, msg):
return False
async def passed_async_validator(peer_id, msg):
await trio.hazmat.checkpoint()
return True
async def failed_async_validator(peer_id, msg):
await trio.hazmat.checkpoint()
return False
topic_1 = "TEST_SYNC_VALIDATOR"
topic_2 = "TEST_ASYNC_VALIDATOR"
if is_topic_1_val_passed:
pubsubs_fsub[0].set_topic_validator(topic_1, passed_sync_validator,
False)
else:
pubsubs_fsub[0].set_topic_validator(topic_1, failed_sync_validator,
False)
if is_topic_2_val_passed:
pubsubs_fsub[0].set_topic_validator(topic_2,
passed_async_validator, True)
else:
pubsubs_fsub[0].set_topic_validator(topic_2,
failed_async_validator, True)
msg = make_pubsub_msg(
origin_id=pubsubs_fsub[0].my_id,
topic_ids=[topic_1, topic_2],
data=b"1234",
seqno=b"\x00" * 8,
)
if is_topic_1_val_passed and is_topic_2_val_passed:
await pubsubs_fsub[0].validate_msg(pubsubs_fsub[0].my_id, msg)
else:
with pytest.raises(ValidationError):
await pubsubs_fsub[0].validate_msg(pubsubs_fsub[0].my_id, msg)
async def test_message_all_peers(monkeypatch, security_protocol):
async with PubsubFactory.create_batch_with_floodsub(
1, security_protocol=security_protocol
) as pubsubs_fsub, net_stream_pair_factory(
security_protocol=security_protocol) as stream_pair:
peer_id = IDFactory()
mock_peers = {peer_id: stream_pair[0]}
with monkeypatch.context() as m:
m.setattr(pubsubs_fsub[0], "peers", mock_peers)
empty_rpc = rpc_pb2.RPC()
empty_rpc_bytes = empty_rpc.SerializeToString()
empty_rpc_bytes_len_prefixed = encode_varint_prefixed(
empty_rpc_bytes)
await pubsubs_fsub[0].message_all_peers(empty_rpc_bytes)
assert (await stream_pair[1].read(MAX_READ_LEN)
) == empty_rpc_bytes_len_prefixed
async def test_get_msg_validators():
async with PubsubFactory.create_batch_with_floodsub(1) as pubsubs_fsub:
times_sync_validator_called = 0
def sync_validator(peer_id, msg):
nonlocal times_sync_validator_called
times_sync_validator_called += 1
times_async_validator_called = 0
async def async_validator(peer_id, msg):
nonlocal times_async_validator_called
times_async_validator_called += 1
await trio.hazmat.checkpoint()
topic_1 = "TEST_VALIDATOR_1"
topic_2 = "TEST_VALIDATOR_2"
topic_3 = "TEST_VALIDATOR_3"
# Register sync validator for topic 1 and 2
pubsubs_fsub[0].set_topic_validator(topic_1, sync_validator, False)
pubsubs_fsub[0].set_topic_validator(topic_2, sync_validator, False)
# Register async validator for topic 3
pubsubs_fsub[0].set_topic_validator(topic_3, async_validator, True)
msg = make_pubsub_msg(
origin_id=pubsubs_fsub[0].my_id,
topic_ids=[topic_1, topic_2, topic_3],
data=b"1234",
seqno=b"\x00" * 8,
)
topic_validators = pubsubs_fsub[0].get_msg_validators(msg)
for topic_validator in topic_validators:
if topic_validator.is_async:
await topic_validator.validator(peer_id=IDFactory(), msg="msg")
else:
topic_validator.validator(peer_id=IDFactory(), msg="msg")
assert times_sync_validator_called == 2
assert times_async_validator_called == 1
async def test_handle_talk():
async with PubsubFactory.create_batch_with_floodsub(1) as pubsubs_fsub:
sub = await pubsubs_fsub[0].subscribe(TESTING_TOPIC)
msg_0 = make_pubsub_msg(
origin_id=pubsubs_fsub[0].my_id,
topic_ids=[TESTING_TOPIC],
data=b"1234",
seqno=b"\x00" * 8,
)
pubsubs_fsub[0].notify_subscriptions(msg_0)
msg_1 = make_pubsub_msg(
origin_id=pubsubs_fsub[0].my_id,
topic_ids=["NOT_SUBSCRIBED"],
data=b"1234",
seqno=b"\x11" * 8,
)
pubsubs_fsub[0].notify_subscriptions(msg_1)
assert (len(pubsubs_fsub[0].topic_ids) == 1 and sub
== pubsubs_fsub[0].subscribed_topics_receive[TESTING_TOPIC])
assert (await sub.get()) == msg_0
async def test_simple_two_nodes():
async with PubsubFactory.create_batch_with_floodsub(2) as pubsubs_fsub:
topic = "my_topic"
data = b"some data"
await connect(pubsubs_fsub[0].host, pubsubs_fsub[1].host)
await trio.sleep(0.25)
sub_b = await pubsubs_fsub[1].subscribe(topic)
# Sleep to let a know of b's subscription
await trio.sleep(0.25)
await pubsubs_fsub[0].publish(topic, data)
res_b = await sub_b.get()
# Check that the msg received by node_b is the same
# as the message sent by node_a
assert ID(res_b.from_id) == pubsubs_fsub[0].host.get_id()
assert res_b.data == data
assert res_b.topicIDs == [topic]
async def test_lru_cache_two_nodes():
# two nodes with cache_size of 4
# Mock `get_msg_id` to make us easier to manipulate `msg_id` by `data`.
def get_msg_id(msg):
# Originally it is `(msg.seqno, msg.from_id)`
return (msg.data, msg.from_id)
async with PubsubFactory.create_batch_with_floodsub(
2, cache_size=4, msg_id_constructor=get_msg_id) as pubsubs_fsub:
# `node_a` send the following messages to node_b
message_indices = [1, 1, 2, 1, 3, 1, 4, 1, 5, 1]
# `node_b` should only receive the following
expected_received_indices = [1, 2, 3, 4, 5, 1]
topic = "my_topic"
await connect(pubsubs_fsub[0].host, pubsubs_fsub[1].host)
await trio.sleep(0.25)
sub_b = await pubsubs_fsub[1].subscribe(topic)
await trio.sleep(0.25)
def _make_testing_data(i: int) -> bytes:
num_int_bytes = 4
if i >= 2**(num_int_bytes * 8):
raise ValueError("integer is too large to be serialized")
return b"data" + i.to_bytes(num_int_bytes, "big")
for index in message_indices:
await pubsubs_fsub[0].publish(topic, _make_testing_data(index))
await trio.sleep(0.25)
for index in expected_received_indices:
res_b = await sub_b.get()
assert res_b.data == _make_testing_data(index)
async def test_publish_push_msg_is_called(monkeypatch):
msg_forwarders = []
msgs = []
async def push_msg(msg_forwarder, msg):
msg_forwarders.append(msg_forwarder)
msgs.append(msg)
await trio.hazmat.checkpoint()
async with PubsubFactory.create_batch_with_floodsub(1) as pubsubs_fsub:
with monkeypatch.context() as m:
m.setattr(pubsubs_fsub[0], "push_msg", push_msg)
await pubsubs_fsub[0].publish(TESTING_TOPIC, TESTING_DATA)
await pubsubs_fsub[0].publish(TESTING_TOPIC, TESTING_DATA)
assert (
len(msgs) == 2
), "`push_msg` should be called every time `publish` is called"
assert (msg_forwarders[0]
== msg_forwarders[1]) and (msg_forwarders[1]
== pubsubs_fsub[0].my_id)
assert (msgs[0].seqno !=
msgs[1].seqno), "`seqno` should be different every time"
async def test_push_msg(monkeypatch):
async with PubsubFactory.create_batch_with_floodsub(1) as pubsubs_fsub:
msg_0 = make_pubsub_msg(
origin_id=pubsubs_fsub[0].my_id,
topic_ids=[TESTING_TOPIC],
data=TESTING_DATA,
seqno=b"\x00" * 8,
)
@contextmanager
def mock_router_publish():
event = trio.Event()
async def router_publish(*args, **kwargs):
event.set()
await trio.hazmat.checkpoint()
with monkeypatch.context() as m:
m.setattr(pubsubs_fsub[0].router, "publish", router_publish)
yield event
with mock_router_publish() as event:
# Test: `msg` is not seen before `push_msg`, and is seen after `push_msg`.
assert not pubsubs_fsub[0]._is_msg_seen(msg_0)
await pubsubs_fsub[0].push_msg(pubsubs_fsub[0].my_id, msg_0)
assert pubsubs_fsub[0]._is_msg_seen(msg_0)
# Test: Ensure `router.publish` is called in `push_msg`
with trio.fail_after(0.1):
await event.wait()
with mock_router_publish() as event:
# Test: `push_msg` the message again and it will be reject.
# `router_publish` is not called then.
await pubsubs_fsub[0].push_msg(pubsubs_fsub[0].my_id, msg_0)
await trio.sleep(0.01)
assert not event.is_set()
sub = await pubsubs_fsub[0].subscribe(TESTING_TOPIC)
# Test: `push_msg` succeeds with another unseen msg.
msg_1 = make_pubsub_msg(
origin_id=pubsubs_fsub[0].my_id,
topic_ids=[TESTING_TOPIC],
data=TESTING_DATA,
seqno=b"\x11" * 8,
)
assert not pubsubs_fsub[0]._is_msg_seen(msg_1)
await pubsubs_fsub[0].push_msg(pubsubs_fsub[0].my_id, msg_1)
assert pubsubs_fsub[0]._is_msg_seen(msg_1)
with trio.fail_after(0.1):
await event.wait()
# Test: Subscribers are notified when `push_msg` new messages.
assert (await sub.get()) == msg_1
with mock_router_publish() as event:
# Test: add a topic validator and `push_msg` the message that
# does not pass the validation.
# `router_publish` is not called then.
def failed_sync_validator(peer_id, msg):
return False
pubsubs_fsub[0].set_topic_validator(TESTING_TOPIC,
failed_sync_validator, False)
msg_2 = make_pubsub_msg(
origin_id=pubsubs_fsub[0].my_id,
topic_ids=[TESTING_TOPIC],
data=TESTING_DATA,
seqno=b"\x22" * 8,
)
await pubsubs_fsub[0].push_msg(pubsubs_fsub[0].my_id, msg_2)
await trio.sleep(0.01)
assert not event.is_set()
async def test_continuously_read_stream(monkeypatch, nursery,
security_protocol):
async def wait_for_event_occurring(event):
await trio.hazmat.checkpoint()
with trio.fail_after(0.1):
await event.wait()
class Events(NamedTuple):
push_msg: trio.Event
handle_subscription: trio.Event
handle_rpc: trio.Event
@contextmanager
def mock_methods():
event_push_msg = trio.Event()
event_handle_subscription = trio.Event()
event_handle_rpc = trio.Event()
async def mock_push_msg(msg_forwarder, msg):
event_push_msg.set()
await trio.hazmat.checkpoint()
def mock_handle_subscription(origin_id, sub_message):
event_handle_subscription.set()
async def mock_handle_rpc(rpc, sender_peer_id):
event_handle_rpc.set()
await trio.hazmat.checkpoint()
with monkeypatch.context() as m:
m.setattr(pubsubs_fsub[0], "push_msg", mock_push_msg)
m.setattr(pubsubs_fsub[0], "handle_subscription",
mock_handle_subscription)
m.setattr(pubsubs_fsub[0].router, "handle_rpc", mock_handle_rpc)
yield Events(event_push_msg, event_handle_subscription,
event_handle_rpc)
async with PubsubFactory.create_batch_with_floodsub(
1, security_protocol=security_protocol
) as pubsubs_fsub, net_stream_pair_factory(
security_protocol=security_protocol) as stream_pair:
await pubsubs_fsub[0].subscribe(TESTING_TOPIC)
# Kick off the task `continuously_read_stream`
nursery.start_soon(pubsubs_fsub[0].continuously_read_stream,
stream_pair[0])
# Test: `push_msg` is called when publishing to a subscribed topic.
publish_subscribed_topic = rpc_pb2.RPC(
publish=[rpc_pb2.Message(topicIDs=[TESTING_TOPIC])])
with mock_methods() as events:
await stream_pair[1].write(
encode_varint_prefixed(
publish_subscribed_topic.SerializeToString()))
await wait_for_event_occurring(events.push_msg)
# Make sure the other events are not emitted.
with pytest.raises(trio.TooSlowError):
await wait_for_event_occurring(events.handle_subscription)
with pytest.raises(trio.TooSlowError):
await wait_for_event_occurring(events.handle_rpc)
# Test: `push_msg` is not called when publishing to a topic-not-subscribed.
publish_not_subscribed_topic = rpc_pb2.RPC(
publish=[rpc_pb2.Message(topicIDs=["NOT_SUBSCRIBED"])])
with mock_methods() as events:
await stream_pair[1].write(
encode_varint_prefixed(
publish_not_subscribed_topic.SerializeToString()))
with pytest.raises(trio.TooSlowError):
await wait_for_event_occurring(events.push_msg)
# Test: `handle_subscription` is called when a subscription message is received.
subscription_msg = rpc_pb2.RPC(subscriptions=[rpc_pb2.RPC.SubOpts()])
with mock_methods() as events:
await stream_pair[1].write(
encode_varint_prefixed(subscription_msg.SerializeToString()))
await wait_for_event_occurring(events.handle_subscription)
# Make sure the other events are not emitted.
with pytest.raises(trio.TooSlowError):
await wait_for_event_occurring(events.push_msg)
with pytest.raises(trio.TooSlowError):
await wait_for_event_occurring(events.handle_rpc)
# Test: `handle_rpc` is called when a control message is received.
control_msg = rpc_pb2.RPC(control=rpc_pb2.ControlMessage())
with mock_methods() as events:
await stream_pair[1].write(
encode_varint_prefixed(control_msg.SerializeToString()))
await wait_for_event_occurring(events.handle_rpc)
# Make sure the other events are not emitted.
with pytest.raises(trio.TooSlowError):
await wait_for_event_occurring(events.push_msg)
with pytest.raises(trio.TooSlowError):
await wait_for_event_occurring(events.handle_subscription)
