Merge pull request #1731 from valentinewallace/2022-09-router-test-utils-mod
[rust-lightning] / lightning / src / routing / test_utils.rs
diff --git a/lightning/src/routing/test_utils.rs b/lightning/src/routing/test_utils.rs
new file mode 100644 (file)
index 0000000..f1a853f
--- /dev/null
@@ -0,0 +1,497 @@
+// This file is Copyright its original authors, visible in version control
+// history.
+//
+// This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
+// or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
+// You may not use this file except in accordance with one or both of these
+// licenses.
+
+use routing::gossip::{NetworkGraph, P2PGossipSync};
+use ln::features::{ChannelFeatures, NodeFeatures};
+use ln::msgs::{UnsignedChannelAnnouncement, ChannelAnnouncement, RoutingMessageHandler,
+       NodeAnnouncement, UnsignedNodeAnnouncement, ChannelUpdate, UnsignedChannelUpdate, MAX_VALUE_MSAT};
+use util::test_utils;
+use util::ser::Writeable;
+
+use bitcoin::hashes::sha256d::Hash as Sha256dHash;
+use bitcoin::hashes::Hash;
+use bitcoin::network::constants::Network;
+use bitcoin::blockdata::constants::genesis_block;
+
+use hex;
+
+use bitcoin::secp256k1::{PublicKey,SecretKey};
+use bitcoin::secp256k1::{Secp256k1, All};
+
+use prelude::*;
+use sync::{self, Arc};
+
+// Using the same keys for LN and BTC ids
+pub(super) fn add_channel(
+       gossip_sync: &P2PGossipSync<Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, Arc<test_utils::TestChainSource>, Arc<test_utils::TestLogger>>,
+       secp_ctx: &Secp256k1<All>, node_1_privkey: &SecretKey, node_2_privkey: &SecretKey, features: ChannelFeatures, short_channel_id: u64
+) {
+       let node_id_1 = PublicKey::from_secret_key(&secp_ctx, node_1_privkey);
+       let node_id_2 = PublicKey::from_secret_key(&secp_ctx, node_2_privkey);
+
+       let unsigned_announcement = UnsignedChannelAnnouncement {
+               features,
+               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+               short_channel_id,
+               node_id_1,
+               node_id_2,
+               bitcoin_key_1: node_id_1,
+               bitcoin_key_2: node_id_2,
+               excess_data: Vec::new(),
+       };
+
+       let msghash = hash_to_message!(&Sha256dHash::hash(&unsigned_announcement.encode()[..])[..]);
+       let valid_announcement = ChannelAnnouncement {
+               node_signature_1: secp_ctx.sign_ecdsa(&msghash, node_1_privkey),
+               node_signature_2: secp_ctx.sign_ecdsa(&msghash, node_2_privkey),
+               bitcoin_signature_1: secp_ctx.sign_ecdsa(&msghash, node_1_privkey),
+               bitcoin_signature_2: secp_ctx.sign_ecdsa(&msghash, node_2_privkey),
+               contents: unsigned_announcement.clone(),
+       };
+       match gossip_sync.handle_channel_announcement(&valid_announcement) {
+               Ok(res) => assert!(res),
+               _ => panic!()
+       };
+}
+
+pub(super) fn add_or_update_node(
+       gossip_sync: &P2PGossipSync<Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, Arc<test_utils::TestChainSource>, Arc<test_utils::TestLogger>>,
+       secp_ctx: &Secp256k1<All>, node_privkey: &SecretKey, features: NodeFeatures, timestamp: u32
+) {
+       let node_id = PublicKey::from_secret_key(&secp_ctx, node_privkey);
+       let unsigned_announcement = UnsignedNodeAnnouncement {
+               features,
+               timestamp,
+               node_id,
+               rgb: [0; 3],
+               alias: [0; 32],
+               addresses: Vec::new(),
+               excess_address_data: Vec::new(),
+               excess_data: Vec::new(),
+       };
+       let msghash = hash_to_message!(&Sha256dHash::hash(&unsigned_announcement.encode()[..])[..]);
+       let valid_announcement = NodeAnnouncement {
+               signature: secp_ctx.sign_ecdsa(&msghash, node_privkey),
+               contents: unsigned_announcement.clone()
+       };
+
+       match gossip_sync.handle_node_announcement(&valid_announcement) {
+               Ok(_) => (),
+               Err(_) => panic!()
+       };
+}
+
+pub(super) fn update_channel(
+       gossip_sync: &P2PGossipSync<Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, Arc<test_utils::TestChainSource>, Arc<test_utils::TestLogger>>,
+       secp_ctx: &Secp256k1<All>, node_privkey: &SecretKey, update: UnsignedChannelUpdate
+) {
+       let msghash = hash_to_message!(&Sha256dHash::hash(&update.encode()[..])[..]);
+       let valid_channel_update = ChannelUpdate {
+               signature: secp_ctx.sign_ecdsa(&msghash, node_privkey),
+               contents: update.clone()
+       };
+
+       match gossip_sync.handle_channel_update(&valid_channel_update) {
+               Ok(res) => assert!(res),
+               Err(_) => panic!()
+       };
+}
+
+pub(super) fn get_nodes(secp_ctx: &Secp256k1<All>) -> (SecretKey, PublicKey, Vec<SecretKey>, Vec<PublicKey>) {
+       let privkeys: Vec<SecretKey> = (2..22).map(|i| {
+               SecretKey::from_slice(&hex::decode(format!("{:02x}", i).repeat(32)).unwrap()[..]).unwrap()
+       }).collect();
+
+       let pubkeys = privkeys.iter().map(|secret| PublicKey::from_secret_key(&secp_ctx, secret)).collect();
+
+       let our_privkey = SecretKey::from_slice(&hex::decode("01".repeat(32)).unwrap()[..]).unwrap();
+       let our_id = PublicKey::from_secret_key(&secp_ctx, &our_privkey);
+
+       (our_privkey, our_id, privkeys, pubkeys)
+}
+
+pub(super) fn id_to_feature_flags(id: u8) -> Vec<u8> {
+       // Set the feature flags to the id'th odd (ie non-required) feature bit so that we can
+       // test for it later.
+       let idx = (id - 1) * 2 + 1;
+       if idx > 8*3 {
+               vec![1 << (idx - 8*3), 0, 0, 0]
+       } else if idx > 8*2 {
+               vec![1 << (idx - 8*2), 0, 0]
+       } else if idx > 8*1 {
+               vec![1 << (idx - 8*1), 0]
+       } else {
+               vec![1 << idx]
+       }
+}
+
+pub(super) fn build_line_graph() -> (
+       Secp256k1<All>, sync::Arc<NetworkGraph<Arc<test_utils::TestLogger>>>,
+       P2PGossipSync<sync::Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, sync::Arc<test_utils::TestChainSource>, sync::Arc<test_utils::TestLogger>>,
+       sync::Arc<test_utils::TestChainSource>, sync::Arc<test_utils::TestLogger>,
+) {
+       let secp_ctx = Secp256k1::new();
+       let logger = Arc::new(test_utils::TestLogger::new());
+       let chain_monitor = Arc::new(test_utils::TestChainSource::new(Network::Testnet));
+       let genesis_hash = genesis_block(Network::Testnet).header.block_hash();
+       let network_graph = Arc::new(NetworkGraph::new(genesis_hash, Arc::clone(&logger)));
+       let gossip_sync = P2PGossipSync::new(Arc::clone(&network_graph), None, Arc::clone(&logger));
+
+       // Build network from our_id to node 19:
+       // our_id -1(1)2- node0 -1(2)2- node1 - ... - node19
+       let (our_privkey, _, privkeys, _) = get_nodes(&secp_ctx);
+
+       for (idx, (cur_privkey, next_privkey)) in core::iter::once(&our_privkey)
+               .chain(privkeys.iter()).zip(privkeys.iter()).enumerate() {
+                       let cur_short_channel_id = (idx as u64) + 1;
+                       add_channel(&gossip_sync, &secp_ctx, &cur_privkey, &next_privkey,
+                               ChannelFeatures::from_le_bytes(id_to_feature_flags(1)), cur_short_channel_id);
+                       update_channel(&gossip_sync, &secp_ctx, &cur_privkey, UnsignedChannelUpdate {
+                               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+                               short_channel_id: cur_short_channel_id,
+                               timestamp: idx as u32,
+                               flags: 0,
+                               cltv_expiry_delta: 0,
+                               htlc_minimum_msat: 0,
+                               htlc_maximum_msat: MAX_VALUE_MSAT,
+                               fee_base_msat: 0,
+                               fee_proportional_millionths: 0,
+                               excess_data: Vec::new()
+                       });
+                       update_channel(&gossip_sync, &secp_ctx, &next_privkey, UnsignedChannelUpdate {
+                               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+                               short_channel_id: cur_short_channel_id,
+                               timestamp: (idx as u32)+1,
+                               flags: 1,
+                               cltv_expiry_delta: 0,
+                               htlc_minimum_msat: 0,
+                               htlc_maximum_msat: MAX_VALUE_MSAT,
+                               fee_base_msat: 0,
+                               fee_proportional_millionths: 0,
+                               excess_data: Vec::new()
+                       });
+                       add_or_update_node(&gossip_sync, &secp_ctx, &next_privkey,
+                               NodeFeatures::from_le_bytes(id_to_feature_flags(1)), 0);
+               }
+
+       (secp_ctx, network_graph, gossip_sync, chain_monitor, logger)
+}
+
+pub(super) fn build_graph() -> (
+       Secp256k1<All>,
+       sync::Arc<NetworkGraph<Arc<test_utils::TestLogger>>>,
+       P2PGossipSync<sync::Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, sync::Arc<test_utils::TestChainSource>, sync::Arc<test_utils::TestLogger>>,
+       sync::Arc<test_utils::TestChainSource>,
+       sync::Arc<test_utils::TestLogger>,
+) {
+       let secp_ctx = Secp256k1::new();
+       let logger = Arc::new(test_utils::TestLogger::new());
+       let chain_monitor = Arc::new(test_utils::TestChainSource::new(Network::Testnet));
+       let genesis_hash = genesis_block(Network::Testnet).header.block_hash();
+       let network_graph = Arc::new(NetworkGraph::new(genesis_hash, Arc::clone(&logger)));
+       let gossip_sync = P2PGossipSync::new(Arc::clone(&network_graph), None, Arc::clone(&logger));
+       // Build network from our_id to node6:
+       //
+       //        -1(1)2-  node0  -1(3)2-
+       //       /                       \
+       // our_id -1(12)2- node7 -1(13)2--- node2
+       //       \                       /
+       //        -1(2)2-  node1  -1(4)2-
+       //
+       //
+       // chan1  1-to-2: disabled
+       // chan1  2-to-1: enabled, 0 fee
+       //
+       // chan2  1-to-2: enabled, ignored fee
+       // chan2  2-to-1: enabled, 0 fee
+       //
+       // chan3  1-to-2: enabled, 0 fee
+       // chan3  2-to-1: enabled, 100 msat fee
+       //
+       // chan4  1-to-2: enabled, 100% fee
+       // chan4  2-to-1: enabled, 0 fee
+       //
+       // chan12 1-to-2: enabled, ignored fee
+       // chan12 2-to-1: enabled, 0 fee
+       //
+       // chan13 1-to-2: enabled, 200% fee
+       // chan13 2-to-1: enabled, 0 fee
+       //
+       //
+       //       -1(5)2- node3 -1(8)2--
+       //       |         2          |
+       //       |       (11)         |
+       //      /          1           \
+       // node2--1(6)2- node4 -1(9)2--- node6 (not in global route map)
+       //      \                      /
+       //       -1(7)2- node5 -1(10)2-
+       //
+       // Channels 5, 8, 9 and 10 are private channels.
+       //
+       // chan5  1-to-2: enabled, 100 msat fee
+       // chan5  2-to-1: enabled, 0 fee
+       //
+       // chan6  1-to-2: enabled, 0 fee
+       // chan6  2-to-1: enabled, 0 fee
+       //
+       // chan7  1-to-2: enabled, 100% fee
+       // chan7  2-to-1: enabled, 0 fee
+       //
+       // chan8  1-to-2: enabled, variable fee (0 then 1000 msat)
+       // chan8  2-to-1: enabled, 0 fee
+       //
+       // chan9  1-to-2: enabled, 1001 msat fee
+       // chan9  2-to-1: enabled, 0 fee
+       //
+       // chan10 1-to-2: enabled, 0 fee
+       // chan10 2-to-1: enabled, 0 fee
+       //
+       // chan11 1-to-2: enabled, 0 fee
+       // chan11 2-to-1: enabled, 0 fee
+
+       let (our_privkey, _, privkeys, _) = get_nodes(&secp_ctx);
+
+       add_channel(&gossip_sync, &secp_ctx, &our_privkey, &privkeys[0], ChannelFeatures::from_le_bytes(id_to_feature_flags(1)), 1);
+       update_channel(&gossip_sync, &secp_ctx, &privkeys[0], UnsignedChannelUpdate {
+               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+               short_channel_id: 1,
+               timestamp: 1,
+               flags: 1,
+               cltv_expiry_delta: 0,
+               htlc_minimum_msat: 0,
+               htlc_maximum_msat: MAX_VALUE_MSAT,
+               fee_base_msat: 0,
+               fee_proportional_millionths: 0,
+               excess_data: Vec::new()
+       });
+
+       add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[0], NodeFeatures::from_le_bytes(id_to_feature_flags(1)), 0);
+
+       add_channel(&gossip_sync, &secp_ctx, &our_privkey, &privkeys[1], ChannelFeatures::from_le_bytes(id_to_feature_flags(2)), 2);
+       update_channel(&gossip_sync, &secp_ctx, &our_privkey, UnsignedChannelUpdate {
+               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+               short_channel_id: 2,
+               timestamp: 1,
+               flags: 0,
+               cltv_expiry_delta: (5 << 4) | 3,
+               htlc_minimum_msat: 0,
+               htlc_maximum_msat: MAX_VALUE_MSAT,
+               fee_base_msat: u32::max_value(),
+               fee_proportional_millionths: u32::max_value(),
+               excess_data: Vec::new()
+       });
+       update_channel(&gossip_sync, &secp_ctx, &privkeys[1], UnsignedChannelUpdate {
+               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+               short_channel_id: 2,
+               timestamp: 1,
+               flags: 1,
+               cltv_expiry_delta: 0,
+               htlc_minimum_msat: 0,
+               htlc_maximum_msat: MAX_VALUE_MSAT,
+               fee_base_msat: 0,
+               fee_proportional_millionths: 0,
+               excess_data: Vec::new()
+       });
+
+       add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[1], NodeFeatures::from_le_bytes(id_to_feature_flags(2)), 0);
+
+       add_channel(&gossip_sync, &secp_ctx, &our_privkey, &privkeys[7], ChannelFeatures::from_le_bytes(id_to_feature_flags(12)), 12);
+       update_channel(&gossip_sync, &secp_ctx, &our_privkey, UnsignedChannelUpdate {
+               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+               short_channel_id: 12,
+               timestamp: 1,
+               flags: 0,
+               cltv_expiry_delta: (5 << 4) | 3,
+               htlc_minimum_msat: 0,
+               htlc_maximum_msat: MAX_VALUE_MSAT,
+               fee_base_msat: u32::max_value(),
+               fee_proportional_millionths: u32::max_value(),
+               excess_data: Vec::new()
+       });
+       update_channel(&gossip_sync, &secp_ctx, &privkeys[7], UnsignedChannelUpdate {
+               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+               short_channel_id: 12,
+               timestamp: 1,
+               flags: 1,
+               cltv_expiry_delta: 0,
+               htlc_minimum_msat: 0,
+               htlc_maximum_msat: MAX_VALUE_MSAT,
+               fee_base_msat: 0,
+               fee_proportional_millionths: 0,
+               excess_data: Vec::new()
+       });
+
+       add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[7], NodeFeatures::from_le_bytes(id_to_feature_flags(8)), 0);
+
+       add_channel(&gossip_sync, &secp_ctx, &privkeys[0], &privkeys[2], ChannelFeatures::from_le_bytes(id_to_feature_flags(3)), 3);
+       update_channel(&gossip_sync, &secp_ctx, &privkeys[0], UnsignedChannelUpdate {
+               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+               short_channel_id: 3,
+               timestamp: 1,
+               flags: 0,
+               cltv_expiry_delta: (3 << 4) | 1,
+               htlc_minimum_msat: 0,
+               htlc_maximum_msat: MAX_VALUE_MSAT,
+               fee_base_msat: 0,
+               fee_proportional_millionths: 0,
+               excess_data: Vec::new()
+       });
+       update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
+               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+               short_channel_id: 3,
+               timestamp: 1,
+               flags: 1,
+               cltv_expiry_delta: (3 << 4) | 2,
+               htlc_minimum_msat: 0,
+               htlc_maximum_msat: MAX_VALUE_MSAT,
+               fee_base_msat: 100,
+               fee_proportional_millionths: 0,
+               excess_data: Vec::new()
+       });
+
+       add_channel(&gossip_sync, &secp_ctx, &privkeys[1], &privkeys[2], ChannelFeatures::from_le_bytes(id_to_feature_flags(4)), 4);
+       update_channel(&gossip_sync, &secp_ctx, &privkeys[1], UnsignedChannelUpdate {
+               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+               short_channel_id: 4,
+               timestamp: 1,
+               flags: 0,
+               cltv_expiry_delta: (4 << 4) | 1,
+               htlc_minimum_msat: 0,
+               htlc_maximum_msat: MAX_VALUE_MSAT,
+               fee_base_msat: 0,
+               fee_proportional_millionths: 1000000,
+               excess_data: Vec::new()
+       });
+       update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
+               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+               short_channel_id: 4,
+               timestamp: 1,
+               flags: 1,
+               cltv_expiry_delta: (4 << 4) | 2,
+               htlc_minimum_msat: 0,
+               htlc_maximum_msat: MAX_VALUE_MSAT,
+               fee_base_msat: 0,
+               fee_proportional_millionths: 0,
+               excess_data: Vec::new()
+       });
+
+       add_channel(&gossip_sync, &secp_ctx, &privkeys[7], &privkeys[2], ChannelFeatures::from_le_bytes(id_to_feature_flags(13)), 13);
+       update_channel(&gossip_sync, &secp_ctx, &privkeys[7], UnsignedChannelUpdate {
+               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+               short_channel_id: 13,
+               timestamp: 1,
+               flags: 0,
+               cltv_expiry_delta: (13 << 4) | 1,
+               htlc_minimum_msat: 0,
+               htlc_maximum_msat: MAX_VALUE_MSAT,
+               fee_base_msat: 0,
+               fee_proportional_millionths: 2000000,
+               excess_data: Vec::new()
+       });
+       update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
+               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+               short_channel_id: 13,
+               timestamp: 1,
+               flags: 1,
+               cltv_expiry_delta: (13 << 4) | 2,
+               htlc_minimum_msat: 0,
+               htlc_maximum_msat: MAX_VALUE_MSAT,
+               fee_base_msat: 0,
+               fee_proportional_millionths: 0,
+               excess_data: Vec::new()
+       });
+
+       add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[2], NodeFeatures::from_le_bytes(id_to_feature_flags(3)), 0);
+
+       add_channel(&gossip_sync, &secp_ctx, &privkeys[2], &privkeys[4], ChannelFeatures::from_le_bytes(id_to_feature_flags(6)), 6);
+       update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
+               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+               short_channel_id: 6,
+               timestamp: 1,
+               flags: 0,
+               cltv_expiry_delta: (6 << 4) | 1,
+               htlc_minimum_msat: 0,
+               htlc_maximum_msat: MAX_VALUE_MSAT,
+               fee_base_msat: 0,
+               fee_proportional_millionths: 0,
+               excess_data: Vec::new()
+       });
+       update_channel(&gossip_sync, &secp_ctx, &privkeys[4], UnsignedChannelUpdate {
+               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+               short_channel_id: 6,
+               timestamp: 1,
+               flags: 1,
+               cltv_expiry_delta: (6 << 4) | 2,
+               htlc_minimum_msat: 0,
+               htlc_maximum_msat: MAX_VALUE_MSAT,
+               fee_base_msat: 0,
+               fee_proportional_millionths: 0,
+               excess_data: Vec::new(),
+       });
+
+       add_channel(&gossip_sync, &secp_ctx, &privkeys[4], &privkeys[3], ChannelFeatures::from_le_bytes(id_to_feature_flags(11)), 11);
+       update_channel(&gossip_sync, &secp_ctx, &privkeys[4], UnsignedChannelUpdate {
+               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+               short_channel_id: 11,
+               timestamp: 1,
+               flags: 0,
+               cltv_expiry_delta: (11 << 4) | 1,
+               htlc_minimum_msat: 0,
+               htlc_maximum_msat: MAX_VALUE_MSAT,
+               fee_base_msat: 0,
+               fee_proportional_millionths: 0,
+               excess_data: Vec::new()
+       });
+       update_channel(&gossip_sync, &secp_ctx, &privkeys[3], UnsignedChannelUpdate {
+               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+               short_channel_id: 11,
+               timestamp: 1,
+               flags: 1,
+               cltv_expiry_delta: (11 << 4) | 2,
+               htlc_minimum_msat: 0,
+               htlc_maximum_msat: MAX_VALUE_MSAT,
+               fee_base_msat: 0,
+               fee_proportional_millionths: 0,
+               excess_data: Vec::new()
+       });
+
+       add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[4], NodeFeatures::from_le_bytes(id_to_feature_flags(5)), 0);
+
+       add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[3], NodeFeatures::from_le_bytes(id_to_feature_flags(4)), 0);
+
+       add_channel(&gossip_sync, &secp_ctx, &privkeys[2], &privkeys[5], ChannelFeatures::from_le_bytes(id_to_feature_flags(7)), 7);
+       update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
+               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+               short_channel_id: 7,
+               timestamp: 1,
+               flags: 0,
+               cltv_expiry_delta: (7 << 4) | 1,
+               htlc_minimum_msat: 0,
+               htlc_maximum_msat: MAX_VALUE_MSAT,
+               fee_base_msat: 0,
+               fee_proportional_millionths: 1000000,
+               excess_data: Vec::new()
+       });
+       update_channel(&gossip_sync, &secp_ctx, &privkeys[5], UnsignedChannelUpdate {
+               chain_hash: genesis_block(Network::Testnet).header.block_hash(),
+               short_channel_id: 7,
+               timestamp: 1,
+               flags: 1,
+               cltv_expiry_delta: (7 << 4) | 2,
+               htlc_minimum_msat: 0,
+               htlc_maximum_msat: MAX_VALUE_MSAT,
+               fee_base_msat: 0,
+               fee_proportional_millionths: 0,
+               excess_data: Vec::new()
+       });
+
+       add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[5], NodeFeatures::from_le_bytes(id_to_feature_flags(6)), 0);
+
+       (secp_ctx, network_graph, gossip_sync, chain_monitor, logger)
+}