Test utils: allow queueing >2 persistence update results

lightning/src/chain/chainmonitor.rs

@@ -815,6 +815,7 @@ mod tests {
 
 		chanmon_cfgs[1].persister.offchain_monitor_updates.lock().unwrap().clear();
 		chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
+		chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
 
 		nodes[1].node.claim_funds(payment_preimage_1);
 		check_added_monitors!(nodes[1], 1);
@@ -823,8 +824,6 @@ mod tests {
 		check_added_monitors!(nodes[1], 1);
 		expect_payment_claimed!(nodes[1], payment_hash_2, 1_000_000);
 
-		chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
-
 		let persistences = chanmon_cfgs[1].persister.offchain_monitor_updates.lock().unwrap().clone();
 		assert_eq!(persistences.len(), 1);
 		let (funding_txo, updates) = persistences.iter().next().unwrap();

lightning/src/ln/chanmon_update_fail_tests.rs

@@ -782,6 +782,7 @@ fn test_monitor_update_raa_while_paused() {
 	check_added_monitors!(nodes[1], 1);
 	let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
 
+	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
 	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
 	nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &send_event_2.msgs[0]);
 	nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &send_event_2.commitment_msg);
@@ -793,7 +794,6 @@ fn test_monitor_update_raa_while_paused() {
 	assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
 	check_added_monitors!(nodes[0], 1);
 
-	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
 	let (outpoint, latest_update, _) = nodes[0].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
 	nodes[0].chain_monitor.chain_monitor.force_channel_monitor_updated(outpoint, latest_update);
 	check_added_monitors!(nodes[0], 0);
@@ -1223,6 +1223,7 @@ fn raa_no_response_awaiting_raa_state() {
 	// nodes[1]) followed by an RAA. Fail the monitor updating prior to the CS, deliver the RAA,
 	// then restore channel monitor updates.
 	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
+	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
 	nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
 	nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event.commitment_msg);
 	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
@@ -1233,7 +1234,6 @@ fn raa_no_response_awaiting_raa_state() {
 	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
 	check_added_monitors!(nodes[1], 1);
 
-	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
 	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
 	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(outpoint, latest_update);
 	// nodes[1] should be AwaitingRAA here!
@@ -1959,7 +1959,7 @@ fn test_path_paused_mpp() {
 	// Set it so that the first monitor update (for the path 0 -> 1 -> 3) succeeds, but the second
 	// (for the path 0 -> 2 -> 3) fails.
 	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
-	chanmon_cfgs[0].persister.set_next_update_ret(Some(ChannelMonitorUpdateStatus::InProgress));
+	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
 
 	// Now check that we get the right return value, indicating that the first path succeeded but
 	// the second got a MonitorUpdateInProgress err. This implies
@@ -2268,6 +2268,7 @@ fn do_channel_holding_cell_serialize(disconnect: bool, reload_a: bool) {
 	nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2), PaymentId(payment_hash_2.0)).unwrap();
 	check_added_monitors!(nodes[0], 0);
 
+	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
 	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
 	nodes[0].node.claim_funds(payment_preimage_0);
 	check_added_monitors!(nodes[0], 1);

lightning/src/util/test_utils.rs

@@ -224,10 +224,9 @@ impl<'a> chain::Watch<EnforcingSigner> for TestChainMonitor<'a> {
 }
 
 pub struct TestPersister {
-	pub update_ret: Mutex<chain::ChannelMonitorUpdateStatus>,
-	/// If this is set to Some(), after the next return, we'll always return this until update_ret
-	/// is changed:
-	pub next_update_ret: Mutex<Option<chain::ChannelMonitorUpdateStatus>>,
+	/// The queue of update statuses we'll return. If none are queued, ::Completed will always be
+	/// returned.
+	pub update_rets: Mutex<VecDeque<chain::ChannelMonitorUpdateStatus>>,
 	/// When we get an update_persisted_channel call with no ChannelMonitorUpdate, we insert the
 	/// MonitorUpdateId here.
 	pub chain_sync_monitor_persistences: Mutex<HashMap<OutPoint, HashSet<MonitorUpdateId>>>,
@@ -238,34 +237,29 @@ pub struct TestPersister {
 impl TestPersister {
 	pub fn new() -> Self {
 		Self {
-			update_ret: Mutex::new(chain::ChannelMonitorUpdateStatus::Completed),
-			next_update_ret: Mutex::new(None),
+			update_rets: Mutex::new(VecDeque::new()),
 			chain_sync_monitor_persistences: Mutex::new(HashMap::new()),
 			offchain_monitor_updates: Mutex::new(HashMap::new()),
 		}
 	}
 
-	pub fn set_update_ret(&self, ret: chain::ChannelMonitorUpdateStatus) {
-		*self.update_ret.lock().unwrap() = ret;
-	}
-
-	pub fn set_next_update_ret(&self, next_ret: Option<chain::ChannelMonitorUpdateStatus>) {
-		*self.next_update_ret.lock().unwrap() = next_ret;
+	/// Queue an update status to return.
+	pub fn set_update_ret(&self, next_ret: chain::ChannelMonitorUpdateStatus) {
+		self.update_rets.lock().unwrap().push_back(next_ret);
 	}
 }
 impl<Signer: keysinterface::Sign> chainmonitor::Persist<Signer> for TestPersister {
 	fn persist_new_channel(&self, _funding_txo: OutPoint, _data: &channelmonitor::ChannelMonitor<Signer>, _id: MonitorUpdateId) -> chain::ChannelMonitorUpdateStatus {
-		let ret = self.update_ret.lock().unwrap().clone();
-		if let Some(next_ret) = self.next_update_ret.lock().unwrap().take() {
-			*self.update_ret.lock().unwrap() = next_ret;
+		if let Some(update_ret) = self.update_rets.lock().unwrap().pop_front() {
+			return update_ret
 		}
-		ret
+		chain::ChannelMonitorUpdateStatus::Completed
 	}
 
 	fn update_persisted_channel(&self, funding_txo: OutPoint, update: &Option<channelmonitor::ChannelMonitorUpdate>, _data: &channelmonitor::ChannelMonitor<Signer>, update_id: MonitorUpdateId) -> chain::ChannelMonitorUpdateStatus {
-		let ret = self.update_ret.lock().unwrap().clone();
-		if let Some(next_ret) = self.next_update_ret.lock().unwrap().take() {
-			*self.update_ret.lock().unwrap() = next_ret;
+		let mut ret = chain::ChannelMonitorUpdateStatus::Completed;
+		if let Some(update_ret) = self.update_rets.lock().unwrap().pop_front() {
+			ret = update_ret;
 		}
 		if update.is_none() {
 			self.chain_sync_monitor_persistences.lock().unwrap().entry(funding_txo).or_insert(HashSet::new()).insert(update_id);