async def test_peer_packer_sends_who_are_you(peer_packer,
incoming_packet_channels,
outgoing_packet_channels,
nursery):
incoming_packet = IncomingPacket(
AuthTagPacketFactory(),
EndpointFactory(),
)
incoming_packet_channels[0].send_nowait(incoming_packet)
with trio.fail_after(0.5):
outgoing_packet = await outgoing_packet_channels[1].receive()
assert peer_packer.is_during_handshake
assert outgoing_packet.receiver_endpoint == incoming_packet.sender_endpoint
assert isinstance(outgoing_packet.packet, WhoAreYouPacket)
assert outgoing_packet.packet.token == incoming_packet.packet.auth_tag