git.bitcoin.ninja Git - rust-lightning/blob - lightning/src/util/test_utils.rs

   1 // This file is Copyright its original authors, visible in version control
   2 // history.
   3 //
   4 // This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
   5 // or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   6 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
   7 // You may not use this file except in accordance with one or both of these
   8 // licenses.
   9
  10 use crate::blinded_path::BlindedPath;
  11 use crate::blinded_path::payment::ReceiveTlvs;
  12 use crate::chain;
  13 use crate::chain::WatchedOutput;
  14 use crate::chain::chaininterface;
  15 use crate::chain::chaininterface::ConfirmationTarget;
  16 #[cfg(test)]
  17 use crate::chain::chaininterface::FEERATE_FLOOR_SATS_PER_KW;
  18 use crate::chain::chainmonitor;
  19 use crate::chain::chainmonitor::{MonitorUpdateId, UpdateOrigin};
  20 use crate::chain::channelmonitor;
  21 use crate::chain::channelmonitor::MonitorEvent;
  22 use crate::chain::transaction::OutPoint;
  23 use crate::routing::router::{CandidateRouteHop, FirstHopCandidate, PublicHopCandidate, PrivateHopCandidate};
  24 use crate::sign;
  25 use crate::events;
  26 use crate::events::bump_transaction::{WalletSource, Utxo};
  27 use crate::ln::ChannelId;
  28 use crate::ln::channelmanager::{ChannelDetails, self};
  29 #[cfg(test)]
  30 use crate::ln::chan_utils::CommitmentTransaction;
  31 use crate::ln::features::{ChannelFeatures, InitFeatures, NodeFeatures};
  32 use crate::ln::{msgs, wire};
  33 use crate::ln::msgs::LightningError;
  34 use crate::ln::script::ShutdownScript;
  35 use crate::offers::invoice::{BlindedPayInfo, UnsignedBolt12Invoice};
  36 use crate::offers::invoice_request::UnsignedInvoiceRequest;
  37 use crate::onion_message::messenger::{DefaultMessageRouter, Destination, MessageRouter, OnionMessagePath};
  38 use crate::routing::gossip::{EffectiveCapacity, NetworkGraph, NodeId, RoutingFees};
  39 use crate::routing::utxo::{UtxoLookup, UtxoLookupError, UtxoResult};
  40 use crate::routing::router::{DefaultRouter, InFlightHtlcs, Path, Route, RouteParameters, RouteHintHop, Router, ScorerAccountingForInFlightHtlcs};
  41 use crate::routing::scoring::{ChannelUsage, ScoreUpdate, ScoreLookUp};
  42 use crate::sync::RwLock;
  43 use crate::util::config::UserConfig;
  44 use crate::util::test_channel_signer::{TestChannelSigner, EnforcementState};
  45 use crate::util::logger::{Logger, Level, Record};
  46 use crate::util::ser::{Readable, ReadableArgs, Writer, Writeable};
  47 use crate::util::persist::KVStore;
  48
  49 use bitcoin::blockdata::constants::ChainHash;
  50 use bitcoin::blockdata::constants::genesis_block;
  51 use bitcoin::blockdata::transaction::{Transaction, TxOut};
  52 use bitcoin::blockdata::script::{Builder, Script, ScriptBuf};
  53 use bitcoin::blockdata::opcodes;
  54 use bitcoin::blockdata::block::Block;
  55 use bitcoin::network::constants::Network;
  56 use bitcoin::hash_types::{BlockHash, Txid};
  57 use bitcoin::sighash::{SighashCache, EcdsaSighashType};
  58
  59 use bitcoin::secp256k1::{PublicKey, Scalar, Secp256k1, SecretKey, self};
  60 use bitcoin::secp256k1::ecdh::SharedSecret;
  61 use bitcoin::secp256k1::ecdsa::{RecoverableSignature, Signature};
  62 use bitcoin::secp256k1::schnorr;
  63
  64 use crate::io;
  65 use crate::prelude::*;
  66 use core::cell::RefCell;
  67 use core::time::Duration;
  68 use crate::sync::{Mutex, Arc};
  69 use core::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
  70 use core::mem;
  71 use bitcoin::bech32::u5;
  72 use crate::sign::{InMemorySigner, RandomBytes, Recipient, EntropySource, NodeSigner, SignerProvider};
  73
  74 #[cfg(feature = "std")]
  75 use std::time::{SystemTime, UNIX_EPOCH};
  76 use bitcoin::psbt::PartiallySignedTransaction;
  77 use bitcoin::Sequence;
  78
  79 pub fn pubkey(byte: u8) -> PublicKey {
  80         let secp_ctx = Secp256k1::new();
  81         PublicKey::from_secret_key(&secp_ctx, &privkey(byte))
  82 }
  83
  84 pub fn privkey(byte: u8) -> SecretKey {
  85         SecretKey::from_slice(&[byte; 32]).unwrap()
  86 }
  87
  88 pub struct TestVecWriter(pub Vec<u8>);
  89 impl Writer for TestVecWriter {
  90         fn write_all(&mut self, buf: &[u8]) -> Result<(), io::Error> {
  91                 self.0.extend_from_slice(buf);
  92                 Ok(())
  93         }
  94 }
  95
  96 pub struct TestFeeEstimator {
  97         pub sat_per_kw: Mutex<u32>,
  98 }
  99 impl chaininterface::FeeEstimator for TestFeeEstimator {
 100         fn get_est_sat_per_1000_weight(&self, _confirmation_target: ConfirmationTarget) -> u32 {
 101                 *self.sat_per_kw.lock().unwrap()
 102         }
 103 }
 104
 105 pub struct TestRouter<'a> {
 106         pub router: DefaultRouter<
 107                 Arc<NetworkGraph<&'a TestLogger>>,
 108                 &'a TestLogger,
 109                 Arc<RandomBytes>,
 110                 &'a RwLock<TestScorer>,
 111                 (),
 112                 TestScorer,
 113         >,
 114         //pub entropy_source: &'a RandomBytes,
 115         pub network_graph: Arc<NetworkGraph<&'a TestLogger>>,
 116         pub next_routes: Mutex<VecDeque<(RouteParameters, Result<Route, LightningError>)>>,
 117         pub scorer: &'a RwLock<TestScorer>,
 118 }
 119
 120 impl<'a> TestRouter<'a> {
 121         pub fn new(
 122                 network_graph: Arc<NetworkGraph<&'a TestLogger>>, logger: &'a TestLogger,
 123                 scorer: &'a RwLock<TestScorer>,
 124         ) -> Self {
 125                 let entropy_source = Arc::new(RandomBytes::new([42; 32]));
 126                 Self {
 127                         router: DefaultRouter::new(network_graph.clone(), logger, entropy_source, scorer, ()),
 128                         network_graph,
 129                         next_routes: Mutex::new(VecDeque::new()),
 130                         scorer,
 131                 }
 132         }
 133
 134         pub fn expect_find_route(&self, query: RouteParameters, result: Result<Route, LightningError>) {
 135                 let mut expected_routes = self.next_routes.lock().unwrap();
 136                 expected_routes.push_back((query, result));
 137         }
 138 }
 139
 140 impl<'a> Router for TestRouter<'a> {
 141         fn find_route(
 142                 &self, payer: &PublicKey, params: &RouteParameters, first_hops: Option<&[&ChannelDetails]>,
 143                 inflight_htlcs: InFlightHtlcs
 144         ) -> Result<Route, msgs::LightningError> {
 145                 let route_res;
 146                 let next_route_opt = self.next_routes.lock().unwrap().pop_front();
 147                 if let Some((find_route_query, find_route_res)) = next_route_opt {
 148                         assert_eq!(find_route_query, *params);
 149                         if let Ok(ref route) = find_route_res {
 150                                 assert_eq!(route.route_params, Some(find_route_query));
 151                                 let scorer = self.scorer.read().unwrap();
 152                                 let scorer = ScorerAccountingForInFlightHtlcs::new(scorer, &inflight_htlcs);
 153                                 for path in &route.paths {
 154                                         let mut aggregate_msat = 0u64;
 155                                         let mut prev_hop_node = payer;
 156                                         for (idx, hop) in path.hops.iter().rev().enumerate() {
 157                                                 aggregate_msat += hop.fee_msat;
 158                                                 let usage = ChannelUsage {
 159                                                         amount_msat: aggregate_msat,
 160                                                         inflight_htlc_msat: 0,
 161                                                         effective_capacity: EffectiveCapacity::Unknown,
 162                                                 };
 163
 164                                                 if idx == path.hops.len() - 1 {
 165                                                         if let Some(first_hops) = first_hops {
 166                                                                 if let Some(idx) = first_hops.iter().position(|h| h.get_outbound_payment_scid() == Some(hop.short_channel_id)) {
 167                                                                         let node_id = NodeId::from_pubkey(payer);
 168                                                                         let candidate = CandidateRouteHop::FirstHop(FirstHopCandidate {
 169                                                                                 details: first_hops[idx],
 170                                                                                 payer_node_id: &node_id,
 171                                                                         });
 172                                                                         scorer.channel_penalty_msat(&candidate, usage, &Default::default());
 173                                                                         continue;
 174                                                                 }
 175                                                         }
 176                                                 }
 177                                                 let network_graph = self.network_graph.read_only();
 178                                                 if let Some(channel) = network_graph.channel(hop.short_channel_id) {
 179                                                         let (directed, _) = channel.as_directed_to(&NodeId::from_pubkey(&hop.pubkey)).unwrap();
 180                                                         let candidate = CandidateRouteHop::PublicHop(PublicHopCandidate {
 181                                                                 info: directed,
 182                                                                 short_channel_id: hop.short_channel_id,
 183                                                         });
 184                                                         scorer.channel_penalty_msat(&candidate, usage, &Default::default());
 185                                                 } else {
 186                                                         let target_node_id = NodeId::from_pubkey(&hop.pubkey);
 187                                                         let route_hint = RouteHintHop {
 188                                                                 src_node_id: *prev_hop_node,
 189                                                                 short_channel_id: hop.short_channel_id,
 190                                                                 fees: RoutingFees { base_msat: 0, proportional_millionths: 0 },
 191                                                                 cltv_expiry_delta: 0,
 192                                                                 htlc_minimum_msat: None,
 193                                                                 htlc_maximum_msat: None,
 194                                                         };
 195                                                         let candidate = CandidateRouteHop::PrivateHop(PrivateHopCandidate {
 196                                                                 hint: &route_hint,
 197                                                                 target_node_id: &target_node_id,
 198                                                         });
 199                                                         scorer.channel_penalty_msat(&candidate, usage, &Default::default());
 200                                                 }
 201                                                 prev_hop_node = &hop.pubkey;
 202                                         }
 203                                 }
 204                         }
 205                         route_res = find_route_res;
 206                 } else {
 207                         route_res = self.router.find_route(payer, params, first_hops, inflight_htlcs);
 208                 };
 209
 210                 if let Ok(route) = &route_res {
 211                         // Previously, `Route`s failed to round-trip through serialization due to a write/read
 212                         // mismatch. Thus, here we test all test-generated routes round-trip:
 213                         let ser = route.encode();
 214                         assert_eq!(Route::read(&mut &ser[..]).unwrap(), *route);
 215                 }
 216                 route_res
 217         }
 218
 219         fn create_blinded_payment_paths<
 220                 T: secp256k1::Signing + secp256k1::Verification
 221         >(
 222                 &self, recipient: PublicKey, first_hops: Vec<ChannelDetails>, tlvs: ReceiveTlvs,
 223                 amount_msats: u64, secp_ctx: &Secp256k1<T>,
 224         ) -> Result<Vec<(BlindedPayInfo, BlindedPath)>, ()> {
 225                 self.router.create_blinded_payment_paths(
 226                         recipient, first_hops, tlvs, amount_msats, secp_ctx
 227                 )
 228         }
 229 }
 230
 231 impl<'a> MessageRouter for TestRouter<'a> {
 232         fn find_path(
 233                 &self, sender: PublicKey, peers: Vec<PublicKey>, destination: Destination
 234         ) -> Result<OnionMessagePath, ()> {
 235                 self.router.find_path(sender, peers, destination)
 236         }
 237
 238         fn create_blinded_paths<
 239                 T: secp256k1::Signing + secp256k1::Verification
 240         >(
 241                 &self, recipient: PublicKey, peers: Vec<PublicKey>, secp_ctx: &Secp256k1<T>,
 242         ) -> Result<Vec<BlindedPath>, ()> {
 243                 self.router.create_blinded_paths(recipient, peers, secp_ctx)
 244         }
 245 }
 246
 247 impl<'a> Drop for TestRouter<'a> {
 248         fn drop(&mut self) {
 249                 #[cfg(feature = "std")] {
 250                         if std::thread::panicking() {
 251                                 return;
 252                         }
 253                 }
 254                 assert!(self.next_routes.lock().unwrap().is_empty());
 255         }
 256 }
 257
 258 pub struct TestMessageRouter<'a> {
 259         inner: DefaultMessageRouter<Arc<NetworkGraph<&'a TestLogger>>, &'a TestLogger, &'a TestKeysInterface>,
 260 }
 261
 262 impl<'a> TestMessageRouter<'a> {
 263         pub fn new(network_graph: Arc<NetworkGraph<&'a TestLogger>>, entropy_source: &'a TestKeysInterface) -> Self {
 264                 Self { inner: DefaultMessageRouter::new(network_graph, entropy_source) }
 265         }
 266 }
 267
 268 impl<'a> MessageRouter for TestMessageRouter<'a> {
 269         fn find_path(
 270                 &self, sender: PublicKey, peers: Vec<PublicKey>, destination: Destination
 271         ) -> Result<OnionMessagePath, ()> {
 272                 self.inner.find_path(sender, peers, destination)
 273         }
 274
 275         fn create_blinded_paths<T: secp256k1::Signing + secp256k1::Verification>(
 276                 &self, recipient: PublicKey, peers: Vec<PublicKey>, secp_ctx: &Secp256k1<T>,
 277         ) -> Result<Vec<BlindedPath>, ()> {
 278                 self.inner.create_blinded_paths(recipient, peers, secp_ctx)
 279         }
 280 }
 281
 282 pub struct OnlyReadsKeysInterface {}
 283
 284 impl EntropySource for OnlyReadsKeysInterface {
 285         fn get_secure_random_bytes(&self) -> [u8; 32] { [0; 32] }}
 286
 287 impl SignerProvider for OnlyReadsKeysInterface {
 288         type EcdsaSigner = TestChannelSigner;
 289         #[cfg(taproot)]
 290         type TaprootSigner = TestChannelSigner;
 291
 292         fn generate_channel_keys_id(&self, _inbound: bool, _channel_value_satoshis: u64, _user_channel_id: u128) -> [u8; 32] { unreachable!(); }
 293
 294         fn derive_channel_signer(&self, _channel_value_satoshis: u64, _channel_keys_id: [u8; 32]) -> Self::EcdsaSigner { unreachable!(); }
 295
 296         fn read_chan_signer(&self, mut reader: &[u8]) -> Result<Self::EcdsaSigner, msgs::DecodeError> {
 297                 let inner: InMemorySigner = ReadableArgs::read(&mut reader, self)?;
 298                 let state = Arc::new(Mutex::new(EnforcementState::new()));
 299
 300                 Ok(TestChannelSigner::new_with_revoked(
 301                         inner,
 302                         state,
 303                         false
 304                 ))
 305         }
 306
 307         fn get_destination_script(&self, _channel_keys_id: [u8; 32]) -> Result<ScriptBuf, ()> { Err(()) }
 308         fn get_shutdown_scriptpubkey(&self) -> Result<ShutdownScript, ()> { Err(()) }
 309 }
 310
 311 pub struct TestChainMonitor<'a> {
 312         pub added_monitors: Mutex<Vec<(OutPoint, channelmonitor::ChannelMonitor<TestChannelSigner>)>>,
 313         pub monitor_updates: Mutex<HashMap<ChannelId, Vec<channelmonitor::ChannelMonitorUpdate>>>,
 314         pub latest_monitor_update_id: Mutex<HashMap<ChannelId, (OutPoint, u64, MonitorUpdateId)>>,
 315         pub chain_monitor: chainmonitor::ChainMonitor<TestChannelSigner, &'a TestChainSource, &'a dyn chaininterface::BroadcasterInterface, &'a TestFeeEstimator, &'a TestLogger, &'a dyn chainmonitor::Persist<TestChannelSigner>>,
 316         pub keys_manager: &'a TestKeysInterface,
 317         /// If this is set to Some(), the next update_channel call (not watch_channel) must be a
 318         /// ChannelForceClosed event for the given channel_id with should_broadcast set to the given
 319         /// boolean.
 320         pub expect_channel_force_closed: Mutex<Option<(ChannelId, bool)>>,
 321         /// If this is set to Some(), the next round trip serialization check will not hold after an
 322         /// update_channel call (not watch_channel) for the given channel_id.
 323         pub expect_monitor_round_trip_fail: Mutex<Option<ChannelId>>,
 324 }
 325 impl<'a> TestChainMonitor<'a> {
 326         pub fn new(chain_source: Option<&'a TestChainSource>, broadcaster: &'a dyn chaininterface::BroadcasterInterface, logger: &'a TestLogger, fee_estimator: &'a TestFeeEstimator, persister: &'a dyn chainmonitor::Persist<TestChannelSigner>, keys_manager: &'a TestKeysInterface) -> Self {
 327                 Self {
 328                         added_monitors: Mutex::new(Vec::new()),
 329                         monitor_updates: Mutex::new(new_hash_map()),
 330                         latest_monitor_update_id: Mutex::new(new_hash_map()),
 331                         chain_monitor: chainmonitor::ChainMonitor::new(chain_source, broadcaster, logger, fee_estimator, persister),
 332                         keys_manager,
 333                         expect_channel_force_closed: Mutex::new(None),
 334                         expect_monitor_round_trip_fail: Mutex::new(None),
 335                 }
 336         }
 337
 338         pub fn complete_sole_pending_chan_update(&self, channel_id: &ChannelId) {
 339                 let (outpoint, _, latest_update) = self.latest_monitor_update_id.lock().unwrap().get(channel_id).unwrap().clone();
 340                 self.chain_monitor.channel_monitor_updated(outpoint, latest_update).unwrap();
 341         }
 342 }
 343 impl<'a> chain::Watch<TestChannelSigner> for TestChainMonitor<'a> {
 344         fn watch_channel(&self, funding_txo: OutPoint, monitor: channelmonitor::ChannelMonitor<TestChannelSigner>) -> Result<chain::ChannelMonitorUpdateStatus, ()> {
 345                 // At every point where we get a monitor update, we should be able to send a useful monitor
 346                 // to a watchtower and disk...
 347                 let mut w = TestVecWriter(Vec::new());
 348                 monitor.write(&mut w).unwrap();
 349                 let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<TestChannelSigner>)>::read(
 350                         &mut io::Cursor::new(&w.0), (self.keys_manager, self.keys_manager)).unwrap().1;
 351                 assert!(new_monitor == monitor);
 352                 self.latest_monitor_update_id.lock().unwrap().insert(monitor.channel_id(),
 353                         (funding_txo, monitor.get_latest_update_id(), MonitorUpdateId::from_new_monitor(&monitor)));
 354                 self.added_monitors.lock().unwrap().push((funding_txo, monitor));
 355                 self.chain_monitor.watch_channel(funding_txo, new_monitor)
 356         }
 357
 358         fn update_channel(&self, funding_txo: OutPoint, update: &channelmonitor::ChannelMonitorUpdate) -> chain::ChannelMonitorUpdateStatus {
 359                 // Every monitor update should survive roundtrip
 360                 let mut w = TestVecWriter(Vec::new());
 361                 update.write(&mut w).unwrap();
 362                 assert!(channelmonitor::ChannelMonitorUpdate::read(
 363                                 &mut io::Cursor::new(&w.0)).unwrap() == *update);
 364                 let channel_id = update.channel_id.unwrap_or(ChannelId::v1_from_funding_outpoint(funding_txo));
 365
 366                 self.monitor_updates.lock().unwrap().entry(channel_id).or_insert(Vec::new()).push(update.clone());
 367
 368                 if let Some(exp) = self.expect_channel_force_closed.lock().unwrap().take() {
 369                         assert_eq!(channel_id, exp.0);
 370                         assert_eq!(update.updates.len(), 1);
 371                         if let channelmonitor::ChannelMonitorUpdateStep::ChannelForceClosed { should_broadcast } = update.updates[0] {
 372                                 assert_eq!(should_broadcast, exp.1);
 373                         } else { panic!(); }
 374                 }
 375
 376                 self.latest_monitor_update_id.lock().unwrap().insert(channel_id,
 377                         (funding_txo, update.update_id, MonitorUpdateId::from_monitor_update(update)));
 378                 let update_res = self.chain_monitor.update_channel(funding_txo, update);
 379                 // At every point where we get a monitor update, we should be able to send a useful monitor
 380                 // to a watchtower and disk...
 381                 let monitor = self.chain_monitor.get_monitor(funding_txo).unwrap();
 382                 w.0.clear();
 383                 monitor.write(&mut w).unwrap();
 384                 let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<TestChannelSigner>)>::read(
 385                         &mut io::Cursor::new(&w.0), (self.keys_manager, self.keys_manager)).unwrap().1;
 386                 if let Some(chan_id) = self.expect_monitor_round_trip_fail.lock().unwrap().take() {
 387                         assert_eq!(chan_id, channel_id);
 388                         assert!(new_monitor != *monitor);
 389                 } else {
 390                         assert!(new_monitor == *monitor);
 391                 }
 392                 self.added_monitors.lock().unwrap().push((funding_txo, new_monitor));
 393                 update_res
 394         }
 395
 396         fn release_pending_monitor_events(&self) -> Vec<(OutPoint, ChannelId, Vec<MonitorEvent>, Option<PublicKey>)> {
 397                 return self.chain_monitor.release_pending_monitor_events();
 398         }
 399 }
 400
 401 #[cfg(test)]
 402 struct JusticeTxData {
 403         justice_tx: Transaction,
 404         value: u64,
 405         commitment_number: u64,
 406 }
 407
 408 #[cfg(test)]
 409 pub(crate) struct WatchtowerPersister {
 410         persister: TestPersister,
 411         /// Upon a new commitment_signed, we'll get a
 412         /// ChannelMonitorUpdateStep::LatestCounterpartyCommitmentTxInfo. We'll store the justice tx
 413         /// amount, and commitment number so we can build the justice tx after our counterparty
 414         /// revokes it.
 415         unsigned_justice_tx_data: Mutex<HashMap<OutPoint, VecDeque<JusticeTxData>>>,
 416         /// After receiving a revoke_and_ack for a commitment number, we'll form and store the justice
 417         /// tx which would be used to provide a watchtower with the data it needs.
 418         watchtower_state: Mutex<HashMap<OutPoint, HashMap<Txid, Transaction>>>,
 419         destination_script: ScriptBuf,
 420 }
 421
 422 #[cfg(test)]
 423 impl WatchtowerPersister {
 424         #[cfg(test)]
 425         pub(crate) fn new(destination_script: ScriptBuf) -> Self {
 426                 WatchtowerPersister {
 427                         persister: TestPersister::new(),
 428                         unsigned_justice_tx_data: Mutex::new(new_hash_map()),
 429                         watchtower_state: Mutex::new(new_hash_map()),
 430                         destination_script,
 431                 }
 432         }
 433
 434         #[cfg(test)]
 435         pub(crate) fn justice_tx(&self, funding_txo: OutPoint, commitment_txid: &Txid)
 436         -> Option<Transaction> {
 437                 self.watchtower_state.lock().unwrap().get(&funding_txo).unwrap().get(commitment_txid).cloned()
 438         }
 439
 440         fn form_justice_data_from_commitment(&self, counterparty_commitment_tx: &CommitmentTransaction)
 441         -> Option<JusticeTxData> {
 442                 let trusted_tx = counterparty_commitment_tx.trust();
 443                 let output_idx = trusted_tx.revokeable_output_index()?;
 444                 let built_tx = trusted_tx.built_transaction();
 445                 let value = built_tx.transaction.output[output_idx as usize].value;
 446                 let justice_tx = trusted_tx.build_to_local_justice_tx(
 447                         FEERATE_FLOOR_SATS_PER_KW as u64, self.destination_script.clone()).ok()?;
 448                 let commitment_number = counterparty_commitment_tx.commitment_number();
 449                 Some(JusticeTxData { justice_tx, value, commitment_number })
 450         }
 451 }
 452
 453 #[cfg(test)]
 454 impl<Signer: sign::ecdsa::WriteableEcdsaChannelSigner> chainmonitor::Persist<Signer> for WatchtowerPersister {
 455         fn persist_new_channel(&self, funding_txo: OutPoint,
 456                 data: &channelmonitor::ChannelMonitor<Signer>, id: MonitorUpdateId
 457         ) -> chain::ChannelMonitorUpdateStatus {
 458                 let res = self.persister.persist_new_channel(funding_txo, data, id);
 459
 460                 assert!(self.unsigned_justice_tx_data.lock().unwrap()
 461                         .insert(funding_txo, VecDeque::new()).is_none());
 462                 assert!(self.watchtower_state.lock().unwrap()
 463                         .insert(funding_txo, new_hash_map()).is_none());
 464
 465                 let initial_counterparty_commitment_tx = data.initial_counterparty_commitment_tx()
 466                         .expect("First and only call expects Some");
 467                 if let Some(justice_data)
 468                         = self.form_justice_data_from_commitment(&initial_counterparty_commitment_tx) {
 469                         self.unsigned_justice_tx_data.lock().unwrap()
 470                                 .get_mut(&funding_txo).unwrap()
 471                                 .push_back(justice_data);
 472                 }
 473                 res
 474         }
 475
 476         fn update_persisted_channel(
 477                 &self, funding_txo: OutPoint, update: Option<&channelmonitor::ChannelMonitorUpdate>,
 478                 data: &channelmonitor::ChannelMonitor<Signer>, update_id: MonitorUpdateId
 479         ) -> chain::ChannelMonitorUpdateStatus {
 480                 let res = self.persister.update_persisted_channel(funding_txo, update, data, update_id);
 481
 482                 if let Some(update) = update {
 483                         let commitment_txs = data.counterparty_commitment_txs_from_update(update);
 484                         let justice_datas = commitment_txs.into_iter()
 485                                 .filter_map(|commitment_tx| self.form_justice_data_from_commitment(&commitment_tx));
 486                         let mut channels_justice_txs = self.unsigned_justice_tx_data.lock().unwrap();
 487                         let channel_state = channels_justice_txs.get_mut(&funding_txo).unwrap();
 488                         channel_state.extend(justice_datas);
 489
 490                         while let Some(JusticeTxData { justice_tx, value, commitment_number }) = channel_state.front() {
 491                                 let input_idx = 0;
 492                                 let commitment_txid = justice_tx.input[input_idx].previous_output.txid;
 493                                 match data.sign_to_local_justice_tx(justice_tx.clone(), input_idx, *value, *commitment_number) {
 494                                         Ok(signed_justice_tx) => {
 495                                                 let dup = self.watchtower_state.lock().unwrap()
 496                                                         .get_mut(&funding_txo).unwrap()
 497                                                         .insert(commitment_txid, signed_justice_tx);
 498                                                 assert!(dup.is_none());
 499                                                 channel_state.pop_front();
 500                                         },
 501                                         Err(_) => break,
 502                                 }
 503                         }
 504                 }
 505                 res
 506         }
 507 }
 508
 509 pub struct TestPersister {
 510         /// The queue of update statuses we'll return. If none are queued, ::Completed will always be
 511         /// returned.
 512         pub update_rets: Mutex<VecDeque<chain::ChannelMonitorUpdateStatus>>,
 513         /// When we get an update_persisted_channel call with no ChannelMonitorUpdate, we insert the
 514         /// MonitorUpdateId here.
 515         pub chain_sync_monitor_persistences: Mutex<HashMap<OutPoint, HashSet<MonitorUpdateId>>>,
 516         /// When we get an update_persisted_channel call *with* a ChannelMonitorUpdate, we insert the
 517         /// MonitorUpdateId here.
 518         pub offchain_monitor_updates: Mutex<HashMap<OutPoint, HashSet<MonitorUpdateId>>>,
 519 }
 520 impl TestPersister {
 521         pub fn new() -> Self {
 522                 Self {
 523                         update_rets: Mutex::new(VecDeque::new()),
 524                         chain_sync_monitor_persistences: Mutex::new(new_hash_map()),
 525                         offchain_monitor_updates: Mutex::new(new_hash_map()),
 526                 }
 527         }
 528
 529         /// Queue an update status to return.
 530         pub fn set_update_ret(&self, next_ret: chain::ChannelMonitorUpdateStatus) {
 531                 self.update_rets.lock().unwrap().push_back(next_ret);
 532         }
 533 }
 534 impl<Signer: sign::ecdsa::WriteableEcdsaChannelSigner> chainmonitor::Persist<Signer> for TestPersister {
 535         fn persist_new_channel(&self, _funding_txo: OutPoint, _data: &channelmonitor::ChannelMonitor<Signer>, _id: MonitorUpdateId) -> chain::ChannelMonitorUpdateStatus {
 536                 if let Some(update_ret) = self.update_rets.lock().unwrap().pop_front() {
 537                         return update_ret
 538                 }
 539                 chain::ChannelMonitorUpdateStatus::Completed
 540         }
 541
 542         fn update_persisted_channel(&self, funding_txo: OutPoint, _update: Option<&channelmonitor::ChannelMonitorUpdate>, _data: &channelmonitor::ChannelMonitor<Signer>, update_id: MonitorUpdateId) -> chain::ChannelMonitorUpdateStatus {
 543                 let mut ret = chain::ChannelMonitorUpdateStatus::Completed;
 544                 if let Some(update_ret) = self.update_rets.lock().unwrap().pop_front() {
 545                         ret = update_ret;
 546                 }
 547                 let is_chain_sync = if let UpdateOrigin::ChainSync(_) = update_id.contents { true } else { false };
 548                 if is_chain_sync {
 549                         self.chain_sync_monitor_persistences.lock().unwrap().entry(funding_txo).or_insert(new_hash_set()).insert(update_id);
 550                 } else {
 551                         self.offchain_monitor_updates.lock().unwrap().entry(funding_txo).or_insert(new_hash_set()).insert(update_id);
 552                 }
 553                 ret
 554         }
 555 }
 556
 557 pub struct TestStore {
 558         persisted_bytes: Mutex<HashMap<String, HashMap<String, Vec<u8>>>>,
 559         read_only: bool,
 560 }
 561
 562 impl TestStore {
 563         pub fn new(read_only: bool) -> Self {
 564                 let persisted_bytes = Mutex::new(new_hash_map());
 565                 Self { persisted_bytes, read_only }
 566         }
 567 }
 568
 569 impl KVStore for TestStore {
 570         fn read(&self, primary_namespace: &str, secondary_namespace: &str, key: &str) -> io::Result<Vec<u8>> {
 571                 let persisted_lock = self.persisted_bytes.lock().unwrap();
 572                 let prefixed = if secondary_namespace.is_empty() {
 573                         primary_namespace.to_string()
 574                 } else {
 575                         format!("{}/{}", primary_namespace, secondary_namespace)
 576                 };
 577
 578                 if let Some(outer_ref) = persisted_lock.get(&prefixed) {
 579                         if let Some(inner_ref) = outer_ref.get(key) {
 580                                 let bytes = inner_ref.clone();
 581                                 Ok(bytes)
 582                         } else {
 583                                 Err(io::Error::new(io::ErrorKind::NotFound, "Key not found"))
 584                         }
 585                 } else {
 586                         Err(io::Error::new(io::ErrorKind::NotFound, "Namespace not found"))
 587                 }
 588         }
 589
 590         fn write(&self, primary_namespace: &str, secondary_namespace: &str, key: &str, buf: &[u8]) -> io::Result<()> {
 591                 if self.read_only {
 592                         return Err(io::Error::new(
 593                                 io::ErrorKind::PermissionDenied,
 594                                 "Cannot modify read-only store",
 595                         ));
 596                 }
 597                 let mut persisted_lock = self.persisted_bytes.lock().unwrap();
 598
 599                 let prefixed = if secondary_namespace.is_empty() {
 600                         primary_namespace.to_string()
 601                 } else {
 602                         format!("{}/{}", primary_namespace, secondary_namespace)
 603                 };
 604                 let outer_e = persisted_lock.entry(prefixed).or_insert(new_hash_map());
 605                 let mut bytes = Vec::new();
 606                 bytes.write_all(buf)?;
 607                 outer_e.insert(key.to_string(), bytes);
 608                 Ok(())
 609         }
 610
 611         fn remove(&self, primary_namespace: &str, secondary_namespace: &str, key: &str, _lazy: bool) -> io::Result<()> {
 612                 if self.read_only {
 613                         return Err(io::Error::new(
 614                                 io::ErrorKind::PermissionDenied,
 615                                 "Cannot modify read-only store",
 616                         ));
 617                 }
 618
 619                 let mut persisted_lock = self.persisted_bytes.lock().unwrap();
 620
 621                 let prefixed = if secondary_namespace.is_empty() {
 622                         primary_namespace.to_string()
 623                 } else {
 624                         format!("{}/{}", primary_namespace, secondary_namespace)
 625                 };
 626                 if let Some(outer_ref) = persisted_lock.get_mut(&prefixed) {
 627                                 outer_ref.remove(&key.to_string());
 628                 }
 629
 630                 Ok(())
 631         }
 632
 633         fn list(&self, primary_namespace: &str, secondary_namespace: &str) -> io::Result<Vec<String>> {
 634                 let mut persisted_lock = self.persisted_bytes.lock().unwrap();
 635
 636                 let prefixed = if secondary_namespace.is_empty() {
 637                         primary_namespace.to_string()
 638                 } else {
 639                         format!("{}/{}", primary_namespace, secondary_namespace)
 640                 };
 641                 match persisted_lock.entry(prefixed) {
 642                         hash_map::Entry::Occupied(e) => Ok(e.get().keys().cloned().collect()),
 643                         hash_map::Entry::Vacant(_) => Ok(Vec::new()),
 644                 }
 645         }
 646 }
 647
 648 unsafe impl Sync for TestStore {}
 649 unsafe impl Send for TestStore {}
 650
 651 pub struct TestBroadcaster {
 652         pub txn_broadcasted: Mutex<Vec<Transaction>>,
 653         pub blocks: Arc<Mutex<Vec<(Block, u32)>>>,
 654 }
 655
 656 impl TestBroadcaster {
 657         pub fn new(network: Network) -> Self {
 658                 Self {
 659                         txn_broadcasted: Mutex::new(Vec::new()),
 660                         blocks: Arc::new(Mutex::new(vec![(genesis_block(network), 0)])),
 661                 }
 662         }
 663
 664         pub fn with_blocks(blocks: Arc<Mutex<Vec<(Block, u32)>>>) -> Self {
 665                 Self { txn_broadcasted: Mutex::new(Vec::new()), blocks }
 666         }
 667
 668         pub fn txn_broadcast(&self) -> Vec<Transaction> {
 669                 self.txn_broadcasted.lock().unwrap().split_off(0)
 670         }
 671
 672         pub fn unique_txn_broadcast(&self) -> Vec<Transaction> {
 673                 let mut txn = self.txn_broadcasted.lock().unwrap().split_off(0);
 674                 let mut seen = new_hash_set();
 675                 txn.retain(|tx| seen.insert(tx.txid()));
 676                 txn
 677         }
 678 }
 679
 680 impl chaininterface::BroadcasterInterface for TestBroadcaster {
 681         fn broadcast_transactions(&self, txs: &[&Transaction]) {
 682                 for tx in txs {
 683                         let lock_time = tx.lock_time.to_consensus_u32();
 684                         assert!(lock_time < 1_500_000_000);
 685                         if tx.lock_time.is_block_height() && lock_time > self.blocks.lock().unwrap().last().unwrap().1 {
 686                                 for inp in tx.input.iter() {
 687                                         if inp.sequence != Sequence::MAX {
 688                                                 panic!("We should never broadcast a transaction before its locktime ({})!", tx.lock_time);
 689                                         }
 690                                 }
 691                         }
 692                 }
 693                 let owned_txs: Vec<Transaction> = txs.iter().map(|tx| (*tx).clone()).collect();
 694                 self.txn_broadcasted.lock().unwrap().extend(owned_txs);
 695         }
 696 }
 697
 698 pub struct TestChannelMessageHandler {
 699         pub pending_events: Mutex<Vec<events::MessageSendEvent>>,
 700         expected_recv_msgs: Mutex<Option<Vec<wire::Message<()>>>>,
 701         connected_peers: Mutex<HashSet<PublicKey>>,
 702         pub message_fetch_counter: AtomicUsize,
 703         chain_hash: ChainHash,
 704 }
 705
 706 impl TestChannelMessageHandler {
 707         pub fn new(chain_hash: ChainHash) -> Self {
 708                 TestChannelMessageHandler {
 709                         pending_events: Mutex::new(Vec::new()),
 710                         expected_recv_msgs: Mutex::new(None),
 711                         connected_peers: Mutex::new(new_hash_set()),
 712                         message_fetch_counter: AtomicUsize::new(0),
 713                         chain_hash,
 714                 }
 715         }
 716
 717         #[cfg(test)]
 718         pub(crate) fn expect_receive_msg(&self, ev: wire::Message<()>) {
 719                 let mut expected_msgs = self.expected_recv_msgs.lock().unwrap();
 720                 if expected_msgs.is_none() { *expected_msgs = Some(Vec::new()); }
 721                 expected_msgs.as_mut().unwrap().push(ev);
 722         }
 723
 724         fn received_msg(&self, _ev: wire::Message<()>) {
 725                 let mut msgs = self.expected_recv_msgs.lock().unwrap();
 726                 if msgs.is_none() { return; }
 727                 assert!(!msgs.as_ref().unwrap().is_empty(), "Received message when we weren't expecting one");
 728                 #[cfg(test)]
 729                 assert_eq!(msgs.as_ref().unwrap()[0], _ev);
 730                 msgs.as_mut().unwrap().remove(0);
 731         }
 732 }
 733
 734 impl Drop for TestChannelMessageHandler {
 735         fn drop(&mut self) {
 736                 #[cfg(feature = "std")]
 737                 {
 738                         let l = self.expected_recv_msgs.lock().unwrap();
 739                         if !std::thread::panicking() {
 740                                 assert!(l.is_none() || l.as_ref().unwrap().is_empty());
 741                         }
 742                 }
 743         }
 744 }
 745
 746 impl msgs::ChannelMessageHandler for TestChannelMessageHandler {
 747         fn handle_open_channel(&self, _their_node_id: &PublicKey, msg: &msgs::OpenChannel) {
 748                 self.received_msg(wire::Message::OpenChannel(msg.clone()));
 749         }
 750         fn handle_accept_channel(&self, _their_node_id: &PublicKey, msg: &msgs::AcceptChannel) {
 751                 self.received_msg(wire::Message::AcceptChannel(msg.clone()));
 752         }
 753         fn handle_funding_created(&self, _their_node_id: &PublicKey, msg: &msgs::FundingCreated) {
 754                 self.received_msg(wire::Message::FundingCreated(msg.clone()));
 755         }
 756         fn handle_funding_signed(&self, _their_node_id: &PublicKey, msg: &msgs::FundingSigned) {
 757                 self.received_msg(wire::Message::FundingSigned(msg.clone()));
 758         }
 759         fn handle_channel_ready(&self, _their_node_id: &PublicKey, msg: &msgs::ChannelReady) {
 760                 self.received_msg(wire::Message::ChannelReady(msg.clone()));
 761         }
 762         fn handle_shutdown(&self, _their_node_id: &PublicKey, msg: &msgs::Shutdown) {
 763                 self.received_msg(wire::Message::Shutdown(msg.clone()));
 764         }
 765         fn handle_closing_signed(&self, _their_node_id: &PublicKey, msg: &msgs::ClosingSigned) {
 766                 self.received_msg(wire::Message::ClosingSigned(msg.clone()));
 767         }
 768         fn handle_stfu(&self, _their_node_id: &PublicKey, msg: &msgs::Stfu) {
 769                 self.received_msg(wire::Message::Stfu(msg.clone()));
 770         }
 771         fn handle_splice(&self, _their_node_id: &PublicKey, msg: &msgs::Splice) {
 772                 self.received_msg(wire::Message::Splice(msg.clone()));
 773         }
 774         fn handle_splice_ack(&self, _their_node_id: &PublicKey, msg: &msgs::SpliceAck) {
 775                 self.received_msg(wire::Message::SpliceAck(msg.clone()));
 776         }
 777         fn handle_splice_locked(&self, _their_node_id: &PublicKey, msg: &msgs::SpliceLocked) {
 778                 self.received_msg(wire::Message::SpliceLocked(msg.clone()));
 779         }
 780         fn handle_update_add_htlc(&self, _their_node_id: &PublicKey, msg: &msgs::UpdateAddHTLC) {
 781                 self.received_msg(wire::Message::UpdateAddHTLC(msg.clone()));
 782         }
 783         fn handle_update_fulfill_htlc(&self, _their_node_id: &PublicKey, msg: &msgs::UpdateFulfillHTLC) {
 784                 self.received_msg(wire::Message::UpdateFulfillHTLC(msg.clone()));
 785         }
 786         fn handle_update_fail_htlc(&self, _their_node_id: &PublicKey, msg: &msgs::UpdateFailHTLC) {
 787                 self.received_msg(wire::Message::UpdateFailHTLC(msg.clone()));
 788         }
 789         fn handle_update_fail_malformed_htlc(&self, _their_node_id: &PublicKey, msg: &msgs::UpdateFailMalformedHTLC) {
 790                 self.received_msg(wire::Message::UpdateFailMalformedHTLC(msg.clone()));
 791         }
 792         fn handle_commitment_signed(&self, _their_node_id: &PublicKey, msg: &msgs::CommitmentSigned) {
 793                 self.received_msg(wire::Message::CommitmentSigned(msg.clone()));
 794         }
 795         fn handle_revoke_and_ack(&self, _their_node_id: &PublicKey, msg: &msgs::RevokeAndACK) {
 796                 self.received_msg(wire::Message::RevokeAndACK(msg.clone()));
 797         }
 798         fn handle_update_fee(&self, _their_node_id: &PublicKey, msg: &msgs::UpdateFee) {
 799                 self.received_msg(wire::Message::UpdateFee(msg.clone()));
 800         }
 801         fn handle_channel_update(&self, _their_node_id: &PublicKey, _msg: &msgs::ChannelUpdate) {
 802                 // Don't call `received_msg` here as `TestRoutingMessageHandler` generates these sometimes
 803         }
 804         fn handle_announcement_signatures(&self, _their_node_id: &PublicKey, msg: &msgs::AnnouncementSignatures) {
 805                 self.received_msg(wire::Message::AnnouncementSignatures(msg.clone()));
 806         }
 807         fn handle_channel_reestablish(&self, _their_node_id: &PublicKey, msg: &msgs::ChannelReestablish) {
 808                 self.received_msg(wire::Message::ChannelReestablish(msg.clone()));
 809         }
 810         fn peer_disconnected(&self, their_node_id: &PublicKey) {
 811                 assert!(self.connected_peers.lock().unwrap().remove(their_node_id));
 812         }
 813         fn peer_connected(&self, their_node_id: &PublicKey, _msg: &msgs::Init, _inbound: bool) -> Result<(), ()> {
 814                 assert!(self.connected_peers.lock().unwrap().insert(their_node_id.clone()));
 815                 // Don't bother with `received_msg` for Init as its auto-generated and we don't want to
 816                 // bother re-generating the expected Init message in all tests.
 817                 Ok(())
 818         }
 819         fn handle_error(&self, _their_node_id: &PublicKey, msg: &msgs::ErrorMessage) {
 820                 self.received_msg(wire::Message::Error(msg.clone()));
 821         }
 822         fn provided_node_features(&self) -> NodeFeatures {
 823                 channelmanager::provided_node_features(&UserConfig::default())
 824         }
 825         fn provided_init_features(&self, _their_init_features: &PublicKey) -> InitFeatures {
 826                 channelmanager::provided_init_features(&UserConfig::default())
 827         }
 828
 829         fn get_chain_hashes(&self) -> Option<Vec<ChainHash>> {
 830                 Some(vec![self.chain_hash])
 831         }
 832
 833         fn handle_open_channel_v2(&self, _their_node_id: &PublicKey, msg: &msgs::OpenChannelV2) {
 834                 self.received_msg(wire::Message::OpenChannelV2(msg.clone()));
 835         }
 836
 837         fn handle_accept_channel_v2(&self, _their_node_id: &PublicKey, msg: &msgs::AcceptChannelV2) {
 838                 self.received_msg(wire::Message::AcceptChannelV2(msg.clone()));
 839         }
 840
 841         fn handle_tx_add_input(&self, _their_node_id: &PublicKey, msg: &msgs::TxAddInput) {
 842                 self.received_msg(wire::Message::TxAddInput(msg.clone()));
 843         }
 844
 845         fn handle_tx_add_output(&self, _their_node_id: &PublicKey, msg: &msgs::TxAddOutput) {
 846                 self.received_msg(wire::Message::TxAddOutput(msg.clone()));
 847         }
 848
 849         fn handle_tx_remove_input(&self, _their_node_id: &PublicKey, msg: &msgs::TxRemoveInput) {
 850                 self.received_msg(wire::Message::TxRemoveInput(msg.clone()));
 851         }
 852
 853         fn handle_tx_remove_output(&self, _their_node_id: &PublicKey, msg: &msgs::TxRemoveOutput) {
 854                 self.received_msg(wire::Message::TxRemoveOutput(msg.clone()));
 855         }
 856
 857         fn handle_tx_complete(&self, _their_node_id: &PublicKey, msg: &msgs::TxComplete) {
 858                 self.received_msg(wire::Message::TxComplete(msg.clone()));
 859         }
 860
 861         fn handle_tx_signatures(&self, _their_node_id: &PublicKey, msg: &msgs::TxSignatures) {
 862                 self.received_msg(wire::Message::TxSignatures(msg.clone()));
 863         }
 864
 865         fn handle_tx_init_rbf(&self, _their_node_id: &PublicKey, msg: &msgs::TxInitRbf) {
 866                 self.received_msg(wire::Message::TxInitRbf(msg.clone()));
 867         }
 868
 869         fn handle_tx_ack_rbf(&self, _their_node_id: &PublicKey, msg: &msgs::TxAckRbf) {
 870                 self.received_msg(wire::Message::TxAckRbf(msg.clone()));
 871         }
 872
 873         fn handle_tx_abort(&self, _their_node_id: &PublicKey, msg: &msgs::TxAbort) {
 874                 self.received_msg(wire::Message::TxAbort(msg.clone()));
 875         }
 876 }
 877
 878 impl events::MessageSendEventsProvider for TestChannelMessageHandler {
 879         fn get_and_clear_pending_msg_events(&self) -> Vec<events::MessageSendEvent> {
 880                 self.message_fetch_counter.fetch_add(1, Ordering::AcqRel);
 881                 let mut pending_events = self.pending_events.lock().unwrap();
 882                 let mut ret = Vec::new();
 883                 mem::swap(&mut ret, &mut *pending_events);
 884                 ret
 885         }
 886 }
 887
 888 fn get_dummy_channel_announcement(short_chan_id: u64) -> msgs::ChannelAnnouncement {
 889         use bitcoin::secp256k1::ffi::Signature as FFISignature;
 890         let secp_ctx = Secp256k1::new();
 891         let network = Network::Testnet;
 892         let node_1_privkey = SecretKey::from_slice(&[42; 32]).unwrap();
 893         let node_2_privkey = SecretKey::from_slice(&[41; 32]).unwrap();
 894         let node_1_btckey = SecretKey::from_slice(&[40; 32]).unwrap();
 895         let node_2_btckey = SecretKey::from_slice(&[39; 32]).unwrap();
 896         let unsigned_ann = msgs::UnsignedChannelAnnouncement {
 897                 features: ChannelFeatures::empty(),
 898                 chain_hash: ChainHash::using_genesis_block(network),
 899                 short_channel_id: short_chan_id,
 900                 node_id_1: NodeId::from_pubkey(&PublicKey::from_secret_key(&secp_ctx, &node_1_privkey)),
 901                 node_id_2: NodeId::from_pubkey(&PublicKey::from_secret_key(&secp_ctx, &node_2_privkey)),
 902                 bitcoin_key_1: NodeId::from_pubkey(&PublicKey::from_secret_key(&secp_ctx, &node_1_btckey)),
 903                 bitcoin_key_2: NodeId::from_pubkey(&PublicKey::from_secret_key(&secp_ctx, &node_2_btckey)),
 904                 excess_data: Vec::new(),
 905         };
 906
 907         unsafe {
 908                 msgs::ChannelAnnouncement {
 909                         node_signature_1: Signature::from(FFISignature::new()),
 910                         node_signature_2: Signature::from(FFISignature::new()),
 911                         bitcoin_signature_1: Signature::from(FFISignature::new()),
 912                         bitcoin_signature_2: Signature::from(FFISignature::new()),
 913                         contents: unsigned_ann,
 914                 }
 915         }
 916 }
 917
 918 fn get_dummy_channel_update(short_chan_id: u64) -> msgs::ChannelUpdate {
 919         use bitcoin::secp256k1::ffi::Signature as FFISignature;
 920         let network = Network::Testnet;
 921         msgs::ChannelUpdate {
 922                 signature: Signature::from(unsafe { FFISignature::new() }),
 923                 contents: msgs::UnsignedChannelUpdate {
 924                         chain_hash: ChainHash::using_genesis_block(network),
 925                         short_channel_id: short_chan_id,
 926                         timestamp: 0,
 927                         flags: 0,
 928                         cltv_expiry_delta: 0,
 929                         htlc_minimum_msat: 0,
 930                         htlc_maximum_msat: msgs::MAX_VALUE_MSAT,
 931                         fee_base_msat: 0,
 932                         fee_proportional_millionths: 0,
 933                         excess_data: vec![],
 934                 }
 935         }
 936 }
 937
 938 pub struct TestRoutingMessageHandler {
 939         pub chan_upds_recvd: AtomicUsize,
 940         pub chan_anns_recvd: AtomicUsize,
 941         pub pending_events: Mutex<Vec<events::MessageSendEvent>>,
 942         pub request_full_sync: AtomicBool,
 943 }
 944
 945 impl TestRoutingMessageHandler {
 946         pub fn new() -> Self {
 947                 TestRoutingMessageHandler {
 948                         chan_upds_recvd: AtomicUsize::new(0),
 949                         chan_anns_recvd: AtomicUsize::new(0),
 950                         pending_events: Mutex::new(vec![]),
 951                         request_full_sync: AtomicBool::new(false),
 952                 }
 953         }
 954 }
 955 impl msgs::RoutingMessageHandler for TestRoutingMessageHandler {
 956         fn handle_node_announcement(&self, _msg: &msgs::NodeAnnouncement) -> Result<bool, msgs::LightningError> {
 957                 Err(msgs::LightningError { err: "".to_owned(), action: msgs::ErrorAction::IgnoreError })
 958         }
 959         fn handle_channel_announcement(&self, _msg: &msgs::ChannelAnnouncement) -> Result<bool, msgs::LightningError> {
 960                 self.chan_anns_recvd.fetch_add(1, Ordering::AcqRel);
 961                 Err(msgs::LightningError { err: "".to_owned(), action: msgs::ErrorAction::IgnoreError })
 962         }
 963         fn handle_channel_update(&self, _msg: &msgs::ChannelUpdate) -> Result<bool, msgs::LightningError> {
 964                 self.chan_upds_recvd.fetch_add(1, Ordering::AcqRel);
 965                 Err(msgs::LightningError { err: "".to_owned(), action: msgs::ErrorAction::IgnoreError })
 966         }
 967         fn get_next_channel_announcement(&self, starting_point: u64) -> Option<(msgs::ChannelAnnouncement, Option<msgs::ChannelUpdate>, Option<msgs::ChannelUpdate>)> {
 968                 let chan_upd_1 = get_dummy_channel_update(starting_point);
 969                 let chan_upd_2 = get_dummy_channel_update(starting_point);
 970                 let chan_ann = get_dummy_channel_announcement(starting_point);
 971
 972                 Some((chan_ann, Some(chan_upd_1), Some(chan_upd_2)))
 973         }
 974
 975         fn get_next_node_announcement(&self, _starting_point: Option<&NodeId>) -> Option<msgs::NodeAnnouncement> {
 976                 None
 977         }
 978
 979         fn peer_connected(&self, their_node_id: &PublicKey, init_msg: &msgs::Init, _inbound: bool) -> Result<(), ()> {
 980                 if !init_msg.features.supports_gossip_queries() {
 981                         return Ok(());
 982                 }
 983
 984                 #[allow(unused_mut, unused_assignments)]
 985                 let mut gossip_start_time = 0;
 986                 #[cfg(feature = "std")]
 987                 {
 988                         gossip_start_time = SystemTime::now().duration_since(UNIX_EPOCH).expect("Time must be > 1970").as_secs();
 989                         if self.request_full_sync.load(Ordering::Acquire) {
 990                                 gossip_start_time -= 60 * 60 * 24 * 7 * 2; // 2 weeks ago
 991                         } else {
 992                                 gossip_start_time -= 60 * 60; // an hour ago
 993                         }
 994                 }
 995
 996                 let mut pending_events = self.pending_events.lock().unwrap();
 997                 pending_events.push(events::MessageSendEvent::SendGossipTimestampFilter {
 998                         node_id: their_node_id.clone(),
 999                         msg: msgs::GossipTimestampFilter {
1000                                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
1001                                 first_timestamp: gossip_start_time as u32,
1002                                 timestamp_range: u32::max_value(),
1003                         },
1004                 });
1005                 Ok(())
1006         }
1007
1008         fn handle_reply_channel_range(&self, _their_node_id: &PublicKey, _msg: msgs::ReplyChannelRange) -> Result<(), msgs::LightningError> {
1009                 Ok(())
1010         }
1011
1012         fn handle_reply_short_channel_ids_end(&self, _their_node_id: &PublicKey, _msg: msgs::ReplyShortChannelIdsEnd) -> Result<(), msgs::LightningError> {
1013                 Ok(())
1014         }
1015
1016         fn handle_query_channel_range(&self, _their_node_id: &PublicKey, _msg: msgs::QueryChannelRange) -> Result<(), msgs::LightningError> {
1017                 Ok(())
1018         }
1019
1020         fn handle_query_short_channel_ids(&self, _their_node_id: &PublicKey, _msg: msgs::QueryShortChannelIds) -> Result<(), msgs::LightningError> {
1021                 Ok(())
1022         }
1023
1024         fn provided_node_features(&self) -> NodeFeatures {
1025                 let mut features = NodeFeatures::empty();
1026                 features.set_gossip_queries_optional();
1027                 features
1028         }
1029
1030         fn provided_init_features(&self, _their_init_features: &PublicKey) -> InitFeatures {
1031                 let mut features = InitFeatures::empty();
1032                 features.set_gossip_queries_optional();
1033                 features
1034         }
1035
1036         fn processing_queue_high(&self) -> bool { false }
1037 }
1038
1039 impl events::MessageSendEventsProvider for TestRoutingMessageHandler {
1040         fn get_and_clear_pending_msg_events(&self) -> Vec<events::MessageSendEvent> {
1041                 let mut ret = Vec::new();
1042                 let mut pending_events = self.pending_events.lock().unwrap();
1043                 core::mem::swap(&mut ret, &mut pending_events);
1044                 ret
1045         }
1046 }
1047
1048 pub struct TestLogger {
1049         level: Level,
1050         pub(crate) id: String,
1051         pub lines: Mutex<HashMap<(&'static str, String), usize>>,
1052         pub context: Mutex<HashMap<(&'static str, Option<PublicKey>, Option<ChannelId>), usize>>,
1053 }
1054
1055 impl TestLogger {
1056         pub fn new() -> TestLogger {
1057                 Self::with_id("".to_owned())
1058         }
1059         pub fn with_id(id: String) -> TestLogger {
1060                 TestLogger {
1061                         level: Level::Trace,
1062                         id,
1063                         lines: Mutex::new(new_hash_map()),
1064                         context: Mutex::new(new_hash_map()),
1065                 }
1066         }
1067         pub fn enable(&mut self, level: Level) {
1068                 self.level = level;
1069         }
1070         pub fn assert_log(&self, module: &str, line: String, count: usize) {
1071                 let log_entries = self.lines.lock().unwrap();
1072                 assert_eq!(log_entries.get(&(module, line)), Some(&count));
1073         }
1074
1075         /// Search for the number of occurrence of the logged lines which
1076         /// 1. belongs to the specified module and
1077         /// 2. contains `line` in it.
1078         /// And asserts if the number of occurrences is the same with the given `count`
1079         pub fn assert_log_contains(&self, module: &str, line: &str, count: usize) {
1080                 let log_entries = self.lines.lock().unwrap();
1081                 let l: usize = log_entries.iter().filter(|&(&(ref m, ref l), _c)| {
1082                         *m == module && l.contains(line)
1083                 }).map(|(_, c) | { c }).sum();
1084                 assert_eq!(l, count)
1085         }
1086
1087         /// Search for the number of occurrences of logged lines which
1088         /// 1. belong to the specified module and
1089         /// 2. match the given regex pattern.
1090         /// Assert that the number of occurrences equals the given `count`
1091         #[cfg(any(test, feature = "_test_utils"))]
1092         pub fn assert_log_regex(&self, module: &str, pattern: regex::Regex, count: usize) {
1093                 let log_entries = self.lines.lock().unwrap();
1094                 let l: usize = log_entries.iter().filter(|&(&(ref m, ref l), _c)| {
1095                         *m == module && pattern.is_match(&l)
1096                 }).map(|(_, c) | { c }).sum();
1097                 assert_eq!(l, count)
1098         }
1099
1100         pub fn assert_log_context_contains(
1101                 &self, module: &str, peer_id: Option<PublicKey>, channel_id: Option<ChannelId>, count: usize
1102         ) {
1103                 let context_entries = self.context.lock().unwrap();
1104                 let l = context_entries.get(&(module, peer_id, channel_id)).unwrap();
1105                 assert_eq!(*l, count)
1106         }
1107 }
1108
1109 impl Logger for TestLogger {
1110         fn log(&self, record: Record) {
1111                 *self.lines.lock().unwrap().entry((record.module_path, format!("{}", record.args))).or_insert(0) += 1;
1112                 *self.context.lock().unwrap().entry((record.module_path, record.peer_id, record.channel_id)).or_insert(0) += 1;
1113                 if record.level >= self.level {
1114                         #[cfg(all(not(ldk_bench), feature = "std"))] {
1115                                 let pfx = format!("{} {} [{}:{}]", self.id, record.level.to_string(), record.module_path, record.line);
1116                                 println!("{:<55}{}", pfx, record.args);
1117                         }
1118                 }
1119         }
1120 }
1121
1122 pub struct TestNodeSigner {
1123         node_secret: SecretKey,
1124 }
1125
1126 impl TestNodeSigner {
1127         pub fn new(node_secret: SecretKey) -> Self {
1128                 Self { node_secret }
1129         }
1130 }
1131
1132 impl NodeSigner for TestNodeSigner {
1133         fn get_inbound_payment_key_material(&self) -> crate::sign::KeyMaterial {
1134                 unreachable!()
1135         }
1136
1137         fn get_node_id(&self, recipient: Recipient) -> Result<PublicKey, ()> {
1138                 let node_secret = match recipient {
1139                         Recipient::Node => Ok(&self.node_secret),
1140                         Recipient::PhantomNode => Err(())
1141                 }?;
1142                 Ok(PublicKey::from_secret_key(&Secp256k1::signing_only(), node_secret))
1143         }
1144
1145         fn ecdh(&self, recipient: Recipient, other_key: &PublicKey, tweak: Option<&bitcoin::secp256k1::Scalar>) -> Result<SharedSecret, ()> {
1146                 let mut node_secret = match recipient {
1147                         Recipient::Node => Ok(self.node_secret.clone()),
1148                         Recipient::PhantomNode => Err(())
1149                 }?;
1150                 if let Some(tweak) = tweak {
1151                         node_secret = node_secret.mul_tweak(tweak).map_err(|_| ())?;
1152                 }
1153                 Ok(SharedSecret::new(other_key, &node_secret))
1154         }
1155
1156         fn sign_invoice(&self, _: &[u8], _: &[bitcoin::bech32::u5], _: Recipient) -> Result<bitcoin::secp256k1::ecdsa::RecoverableSignature, ()> {
1157                 unreachable!()
1158         }
1159
1160         fn sign_bolt12_invoice_request(
1161                 &self, _invoice_request: &UnsignedInvoiceRequest
1162         ) -> Result<schnorr::Signature, ()> {
1163                 unreachable!()
1164         }
1165
1166         fn sign_bolt12_invoice(
1167                 &self, _invoice: &UnsignedBolt12Invoice,
1168         ) -> Result<schnorr::Signature, ()> {
1169                 unreachable!()
1170         }
1171
1172         fn sign_gossip_message(&self, _msg: msgs::UnsignedGossipMessage) -> Result<Signature, ()> {
1173                 unreachable!()
1174         }
1175 }
1176
1177 pub struct TestKeysInterface {
1178         pub backing: sign::PhantomKeysManager,
1179         pub override_random_bytes: Mutex<Option<[u8; 32]>>,
1180         pub disable_revocation_policy_check: bool,
1181         enforcement_states: Mutex<HashMap<[u8;32], Arc<Mutex<EnforcementState>>>>,
1182         expectations: Mutex<Option<VecDeque<OnGetShutdownScriptpubkey>>>,
1183         pub unavailable_signers: Mutex<HashSet<[u8; 32]>>,
1184 }
1185
1186 impl EntropySource for TestKeysInterface {
1187         fn get_secure_random_bytes(&self) -> [u8; 32] {
1188                 let override_random_bytes = self.override_random_bytes.lock().unwrap();
1189                 if let Some(bytes) = &*override_random_bytes {
1190                         return *bytes;
1191                 }
1192                 self.backing.get_secure_random_bytes()
1193         }
1194 }
1195
1196 impl NodeSigner for TestKeysInterface {
1197         fn get_node_id(&self, recipient: Recipient) -> Result<PublicKey, ()> {
1198                 self.backing.get_node_id(recipient)
1199         }
1200
1201         fn ecdh(&self, recipient: Recipient, other_key: &PublicKey, tweak: Option<&Scalar>) -> Result<SharedSecret, ()> {
1202                 self.backing.ecdh(recipient, other_key, tweak)
1203         }
1204
1205         fn get_inbound_payment_key_material(&self) -> sign::KeyMaterial {
1206                 self.backing.get_inbound_payment_key_material()
1207         }
1208
1209         fn sign_invoice(&self, hrp_bytes: &[u8], invoice_data: &[u5], recipient: Recipient) -> Result<RecoverableSignature, ()> {
1210                 self.backing.sign_invoice(hrp_bytes, invoice_data, recipient)
1211         }
1212
1213         fn sign_bolt12_invoice_request(
1214                 &self, invoice_request: &UnsignedInvoiceRequest
1215         ) -> Result<schnorr::Signature, ()> {
1216                 self.backing.sign_bolt12_invoice_request(invoice_request)
1217         }
1218
1219         fn sign_bolt12_invoice(
1220                 &self, invoice: &UnsignedBolt12Invoice,
1221         ) -> Result<schnorr::Signature, ()> {
1222                 self.backing.sign_bolt12_invoice(invoice)
1223         }
1224
1225         fn sign_gossip_message(&self, msg: msgs::UnsignedGossipMessage) -> Result<Signature, ()> {
1226                 self.backing.sign_gossip_message(msg)
1227         }
1228 }
1229
1230 impl SignerProvider for TestKeysInterface {
1231         type EcdsaSigner = TestChannelSigner;
1232         #[cfg(taproot)]
1233         type TaprootSigner = TestChannelSigner;
1234
1235         fn generate_channel_keys_id(&self, inbound: bool, channel_value_satoshis: u64, user_channel_id: u128) -> [u8; 32] {
1236                 self.backing.generate_channel_keys_id(inbound, channel_value_satoshis, user_channel_id)
1237         }
1238
1239         fn derive_channel_signer(&self, channel_value_satoshis: u64, channel_keys_id: [u8; 32]) -> TestChannelSigner {
1240                 let keys = self.backing.derive_channel_signer(channel_value_satoshis, channel_keys_id);
1241                 let state = self.make_enforcement_state_cell(keys.commitment_seed);
1242                 let signer = TestChannelSigner::new_with_revoked(keys, state, self.disable_revocation_policy_check);
1243                 if self.unavailable_signers.lock().unwrap().contains(&channel_keys_id) {
1244                         signer.set_available(false);
1245                 }
1246                 signer
1247         }
1248
1249         fn read_chan_signer(&self, buffer: &[u8]) -> Result<Self::EcdsaSigner, msgs::DecodeError> {
1250                 let mut reader = io::Cursor::new(buffer);
1251
1252                 let inner: InMemorySigner = ReadableArgs::read(&mut reader, self)?;
1253                 let state = self.make_enforcement_state_cell(inner.commitment_seed);
1254
1255                 Ok(TestChannelSigner::new_with_revoked(
1256                         inner,
1257                         state,
1258                         self.disable_revocation_policy_check
1259                 ))
1260         }
1261
1262         fn get_destination_script(&self, channel_keys_id: [u8; 32]) -> Result<ScriptBuf, ()> { self.backing.get_destination_script(channel_keys_id) }
1263
1264         fn get_shutdown_scriptpubkey(&self) -> Result<ShutdownScript, ()> {
1265                 match &mut *self.expectations.lock().unwrap() {
1266                         None => self.backing.get_shutdown_scriptpubkey(),
1267                         Some(expectations) => match expectations.pop_front() {
1268                                 None => panic!("Unexpected get_shutdown_scriptpubkey"),
1269                                 Some(expectation) => Ok(expectation.returns),
1270                         },
1271                 }
1272         }
1273 }
1274
1275 impl TestKeysInterface {
1276         pub fn new(seed: &[u8; 32], network: Network) -> Self {
1277                 let now = Duration::from_secs(genesis_block(network).header.time as u64);
1278                 Self {
1279                         backing: sign::PhantomKeysManager::new(seed, now.as_secs(), now.subsec_nanos(), seed),
1280                         override_random_bytes: Mutex::new(None),
1281                         disable_revocation_policy_check: false,
1282                         enforcement_states: Mutex::new(new_hash_map()),
1283                         expectations: Mutex::new(None),
1284                         unavailable_signers: Mutex::new(new_hash_set()),
1285                 }
1286         }
1287
1288         /// Sets an expectation that [`sign::SignerProvider::get_shutdown_scriptpubkey`] is
1289         /// called.
1290         pub fn expect(&self, expectation: OnGetShutdownScriptpubkey) -> &Self {
1291                 self.expectations.lock().unwrap()
1292                         .get_or_insert_with(|| VecDeque::new())
1293                         .push_back(expectation);
1294                 self
1295         }
1296
1297         pub fn derive_channel_keys(&self, channel_value_satoshis: u64, id: &[u8; 32]) -> TestChannelSigner {
1298                 self.derive_channel_signer(channel_value_satoshis, *id)
1299         }
1300
1301         fn make_enforcement_state_cell(&self, commitment_seed: [u8; 32]) -> Arc<Mutex<EnforcementState>> {
1302                 let mut states = self.enforcement_states.lock().unwrap();
1303                 if !states.contains_key(&commitment_seed) {
1304                         let state = EnforcementState::new();
1305                         states.insert(commitment_seed, Arc::new(Mutex::new(state)));
1306                 }
1307                 let cell = states.get(&commitment_seed).unwrap();
1308                 Arc::clone(cell)
1309         }
1310 }
1311
1312 pub(crate) fn panicking() -> bool {
1313         #[cfg(feature = "std")]
1314         let panicking = ::std::thread::panicking();
1315         #[cfg(not(feature = "std"))]
1316         let panicking = false;
1317         return panicking;
1318 }
1319
1320 impl Drop for TestKeysInterface {
1321         fn drop(&mut self) {
1322                 if panicking() {
1323                         return;
1324                 }
1325
1326                 if let Some(expectations) = &*self.expectations.lock().unwrap() {
1327                         if !expectations.is_empty() {
1328                                 panic!("Unsatisfied expectations: {:?}", expectations);
1329                         }
1330                 }
1331         }
1332 }
1333
1334 /// An expectation that [`sign::SignerProvider::get_shutdown_scriptpubkey`] was called and
1335 /// returns a [`ShutdownScript`].
1336 pub struct OnGetShutdownScriptpubkey {
1337         /// A shutdown script used to close a channel.
1338         pub returns: ShutdownScript,
1339 }
1340
1341 impl core::fmt::Debug for OnGetShutdownScriptpubkey {
1342         fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
1343                 f.debug_struct("OnGetShutdownScriptpubkey").finish()
1344         }
1345 }
1346
1347 pub struct TestChainSource {
1348         pub chain_hash: ChainHash,
1349         pub utxo_ret: Mutex<UtxoResult>,
1350         pub get_utxo_call_count: AtomicUsize,
1351         pub watched_txn: Mutex<HashSet<(Txid, ScriptBuf)>>,
1352         pub watched_outputs: Mutex<HashSet<(OutPoint, ScriptBuf)>>,
1353 }
1354
1355 impl TestChainSource {
1356         pub fn new(network: Network) -> Self {
1357                 let script_pubkey = Builder::new().push_opcode(opcodes::OP_TRUE).into_script();
1358                 Self {
1359                         chain_hash: ChainHash::using_genesis_block(network),
1360                         utxo_ret: Mutex::new(UtxoResult::Sync(Ok(TxOut { value: u64::max_value(), script_pubkey }))),
1361                         get_utxo_call_count: AtomicUsize::new(0),
1362                         watched_txn: Mutex::new(new_hash_set()),
1363                         watched_outputs: Mutex::new(new_hash_set()),
1364                 }
1365         }
1366 }
1367
1368 impl UtxoLookup for TestChainSource {
1369         fn get_utxo(&self, chain_hash: &ChainHash, _short_channel_id: u64) -> UtxoResult {
1370                 self.get_utxo_call_count.fetch_add(1, Ordering::Relaxed);
1371                 if self.chain_hash != *chain_hash {
1372                         return UtxoResult::Sync(Err(UtxoLookupError::UnknownChain));
1373                 }
1374
1375                 self.utxo_ret.lock().unwrap().clone()
1376         }
1377 }
1378
1379 impl chain::Filter for TestChainSource {
1380         fn register_tx(&self, txid: &Txid, script_pubkey: &Script) {
1381                 self.watched_txn.lock().unwrap().insert((*txid, script_pubkey.into()));
1382         }
1383
1384         fn register_output(&self, output: WatchedOutput) {
1385                 self.watched_outputs.lock().unwrap().insert((output.outpoint, output.script_pubkey));
1386         }
1387 }
1388
1389 impl Drop for TestChainSource {
1390         fn drop(&mut self) {
1391                 if panicking() {
1392                         return;
1393                 }
1394         }
1395 }
1396
1397 pub struct TestScorer {
1398         /// Stores a tuple of (scid, ChannelUsage)
1399         scorer_expectations: RefCell<Option<VecDeque<(u64, ChannelUsage)>>>,
1400 }
1401
1402 impl TestScorer {
1403         pub fn new() -> Self {
1404                 Self {
1405                         scorer_expectations: RefCell::new(None),
1406                 }
1407         }
1408
1409         pub fn expect_usage(&self, scid: u64, expectation: ChannelUsage) {
1410                 self.scorer_expectations.borrow_mut().get_or_insert_with(|| VecDeque::new()).push_back((scid, expectation));
1411         }
1412 }
1413
1414 #[cfg(c_bindings)]
1415 impl crate::util::ser::Writeable for TestScorer {
1416         fn write<W: crate::util::ser::Writer>(&self, _: &mut W) -> Result<(), crate::io::Error> { unreachable!(); }
1417 }
1418
1419 impl ScoreLookUp for TestScorer {
1420         type ScoreParams = ();
1421         fn channel_penalty_msat(
1422                 &self, candidate: &CandidateRouteHop, usage: ChannelUsage, _score_params: &Self::ScoreParams
1423         ) -> u64 {
1424                 let short_channel_id = match candidate.globally_unique_short_channel_id() {
1425                         Some(scid) => scid,
1426                         None => return 0,
1427                 };
1428                 if let Some(scorer_expectations) = self.scorer_expectations.borrow_mut().as_mut() {
1429                         match scorer_expectations.pop_front() {
1430                                 Some((scid, expectation)) => {
1431                                         assert_eq!(expectation, usage);
1432                                         assert_eq!(scid, short_channel_id);
1433                                 },
1434                                 None => {},
1435                         }
1436                 }
1437                 0
1438         }
1439 }
1440
1441 impl ScoreUpdate for TestScorer {
1442         fn payment_path_failed(&mut self, _actual_path: &Path, _actual_short_channel_id: u64, _duration_since_epoch: Duration) {}
1443
1444         fn payment_path_successful(&mut self, _actual_path: &Path, _duration_since_epoch: Duration) {}
1445
1446         fn probe_failed(&mut self, _actual_path: &Path, _: u64, _duration_since_epoch: Duration) {}
1447
1448         fn probe_successful(&mut self, _actual_path: &Path, _duration_since_epoch: Duration) {}
1449
1450         fn time_passed(&mut self, _duration_since_epoch: Duration) {}
1451 }
1452
1453 #[cfg(c_bindings)]
1454 impl crate::routing::scoring::Score for TestScorer {}
1455
1456 impl Drop for TestScorer {
1457         fn drop(&mut self) {
1458                 #[cfg(feature = "std")] {
1459                         if std::thread::panicking() {
1460                                 return;
1461                         }
1462                 }
1463
1464                 if let Some(scorer_expectations) = self.scorer_expectations.borrow().as_ref() {
1465                         if !scorer_expectations.is_empty() {
1466                                 panic!("Unsatisfied scorer expectations: {:?}", scorer_expectations)
1467                         }
1468                 }
1469         }
1470 }
1471
1472 pub struct TestWalletSource {
1473         secret_key: SecretKey,
1474         utxos: RefCell<Vec<Utxo>>,
1475         secp: Secp256k1<bitcoin::secp256k1::All>,
1476 }
1477
1478 impl TestWalletSource {
1479         pub fn new(secret_key: SecretKey) -> Self {
1480                 Self {
1481                         secret_key,
1482                         utxos: RefCell::new(Vec::new()),
1483                         secp: Secp256k1::new(),
1484                 }
1485         }
1486
1487         pub fn add_utxo(&self, outpoint: bitcoin::OutPoint, value: u64) -> TxOut {
1488                 let public_key = bitcoin::PublicKey::new(self.secret_key.public_key(&self.secp));
1489                 let utxo = Utxo::new_p2pkh(outpoint, value, &public_key.pubkey_hash());
1490                 self.utxos.borrow_mut().push(utxo.clone());
1491                 utxo.output
1492         }
1493
1494         pub fn add_custom_utxo(&self, utxo: Utxo) -> TxOut {
1495                 let output = utxo.output.clone();
1496                 self.utxos.borrow_mut().push(utxo);
1497                 output
1498         }
1499
1500         pub fn remove_utxo(&self, outpoint: bitcoin::OutPoint) {
1501                 self.utxos.borrow_mut().retain(|utxo| utxo.outpoint != outpoint);
1502         }
1503 }
1504
1505 impl WalletSource for TestWalletSource {
1506         fn list_confirmed_utxos(&self) -> Result<Vec<Utxo>, ()> {
1507                 Ok(self.utxos.borrow().clone())
1508         }
1509
1510         fn get_change_script(&self) -> Result<ScriptBuf, ()> {
1511                 let public_key = bitcoin::PublicKey::new(self.secret_key.public_key(&self.secp));
1512                 Ok(ScriptBuf::new_p2pkh(&public_key.pubkey_hash()))
1513         }
1514
1515         fn sign_psbt(&self, psbt: PartiallySignedTransaction) -> Result<Transaction, ()> {
1516                 let mut tx = psbt.extract_tx();
1517                 let utxos = self.utxos.borrow();
1518                 for i in 0..tx.input.len() {
1519                         if let Some(utxo) = utxos.iter().find(|utxo| utxo.outpoint == tx.input[i].previous_output) {
1520                                 let sighash = SighashCache::new(&tx)
1521                                         .legacy_signature_hash(i, &utxo.output.script_pubkey, EcdsaSighashType::All as u32)
1522                                         .map_err(|_| ())?;
1523                                 let sig = self.secp.sign_ecdsa(&(*sighash.as_raw_hash()).into(), &self.secret_key);
1524                                 let bitcoin_sig = bitcoin::ecdsa::Signature { sig, hash_ty: EcdsaSighashType::All };
1525                                 tx.input[i].script_sig = Builder::new()
1526                                         .push_slice(&bitcoin_sig.serialize())
1527                                         .push_slice(&self.secret_key.public_key(&self.secp).serialize())
1528                                         .into_script();
1529                         }
1530                 }
1531                 Ok(tx)
1532         }
1533 }