waku-interop-tests/tests/peer_exchange/test_peer_exchange.py

import pytest
from src.env_vars import NODE_2
from src.libs.common import delay
from src.node.waku_node import peer_info2multiaddr, multiaddr2id
from src.steps.peer_exchange import StepsPeerExchange
from src.test_data import VALID_PUBSUB_TOPICS


@pytest.mark.skipif("go-waku" not in NODE_2, reason="Test works only with go-waku as responder - https://github.com/waku-org/nwaku/issues/2875")
class TestPeerExchange(StepsPeerExchange):
    def test_get_peers_for_blank_node(self):
        self.setup_first_relay_node(relay_peer_exchange="true")
        self.setup_second_relay_node(peer_exchange="true")
        self.ensure_relay_subscriptions_on_nodes(self.main_nodes, VALID_PUBSUB_TOPICS)
        delay(1)
        node1_peers = self.node1.get_peers()
        assert len(node1_peers) == 1
        self.responder_multiaddr = peer_info2multiaddr(node1_peers[0], self.node1.is_nwaku())
        self.setup_third_node_as_peer_exchange_requester(discv5_discovery="false")

        others = {self.node1.get_id(), self.node2.get_id()}

        own = set()
        for peer_info in self.node3.get_peers():
            peer_id = multiaddr2id(peer_info2multiaddr(peer_info, self.node3.is_nwaku()))
            own.add(peer_id)

        assert own == others, f"Not all nodes found as expected in peer store of Node3"

    def test_get_peers_for_filter_node(self):
        self.setup_first_relay_node(filter="true", relay_peer_exchange="true")
        self.setup_second_relay_node(filter="true", peer_exchange="true")
        self.ensure_relay_subscriptions_on_nodes(self.main_nodes, VALID_PUBSUB_TOPICS)
        delay(1)
        node1_peers = self.node1.get_peers()
        assert len(node1_peers) == 1
        self.responder_multiaddr = peer_info2multiaddr(node1_peers[0], self.node1.is_nwaku())
        self.setup_third_node_as_peer_exchange_requester(discv5_discovery="false")

        suitable_peers = []
        for peer_info in self.node3.get_peers():
            multiaddr = peer_info2multiaddr(peer_info, self.node3.is_nwaku())
            suitable_peers.append(multiaddr)

        assert len(suitable_peers) == 2

        self.setup_fourth_node_as_filter(filternode=suitable_peers[0])

    def test_get_peers_after_node1_was_restarted(self):
        self.setup_first_relay_node(relay_peer_exchange="true")
        self.setup_second_relay_node(peer_exchange="true")
        self.ensure_relay_subscriptions_on_nodes(self.main_nodes, VALID_PUBSUB_TOPICS)
        delay(1)
        node1_peers = self.node1.get_peers()
        assert len(node1_peers) == 1
        self.responder_multiaddr = peer_info2multiaddr(node1_peers[0], self.node1.is_nwaku())

        self.node1.restart()

        # Give Node2 time to update its peer store
        delay(1)

        # Start Node3
        self.setup_third_node_as_peer_exchange_requester(discv5_discovery="false")
        others = {self.node1.get_id(), self.node2.get_id()}

        own = set()
        for peer_info in self.node3.get_peers():
            peer_id = multiaddr2id(peer_info2multiaddr(peer_info, self.node3.is_nwaku()))
            own.add(peer_id)

        assert own == others, f"Two nodes are expected in peer store of Node3"