Test ChannelManager automatic retries

[rust-lightning] / lightning / src / util / test_utils.rs

diff --git a/lightning/src/util/test_utils.rs b/lightning/src/util/test_utils.rs
index 221cc1c62587ae2c97e80602f1112ef5f0c92687..42c664e5b3d5a86bb4b47828ab0a47cd71b70aea 100644 (file)
--- a/lightning/src/util/test_utils.rs
+++ b/lightning/src/util/test_utils.rs
@@ -20,6 +20,7 @@ use crate::chain::keysinterface;
 use crate::ln::channelmanager;
 use crate::ln::features::{ChannelFeatures, InitFeatures, NodeFeatures};
 use crate::ln::{msgs, wire};
+use crate::ln::msgs::LightningError;
 use crate::ln::script::ShutdownScript;
 use crate::routing::gossip::NetworkGraph;
 use crate::routing::router::{find_route, InFlightHtlcs, Route, RouteHop, RouteParameters, Router, ScorerAccountingForInFlightHtlcs};
@@ -76,11 +77,17 @@ impl chaininterface::FeeEstimator for TestFeeEstimator {
 
 pub struct TestRouter<'a> {
        pub network_graph: Arc<NetworkGraph<&'a TestLogger>>,
+       pub next_routes: Mutex<VecDeque<Result<Route, LightningError>>>,
 }
 
 impl<'a> TestRouter<'a> {
        pub fn new(network_graph: Arc<NetworkGraph<&'a TestLogger>>) -> Self {
-               Self { network_graph }
+               Self { network_graph, next_routes: Mutex::new(VecDeque::new()), }
+       }
+
+       pub fn expect_find_route(&self, result: Result<Route, LightningError>) {
+               let mut expected_routes = self.next_routes.lock().unwrap();
+               expected_routes.push_back(result);
        }
 }
 
@@ -89,6 +96,9 @@ impl<'a> Router for TestRouter<'a> {
                &self, payer: &PublicKey, params: &RouteParameters, first_hops: Option<&[&channelmanager::ChannelDetails]>,
                inflight_htlcs: &InFlightHtlcs
        ) -> Result<Route, msgs::LightningError> {
+               if let Some(find_route_res) = self.next_routes.lock().unwrap().pop_front() {
+                       return find_route_res
+               }
                let logger = TestLogger::new();
                find_route(
                        payer, params, &self.network_graph, first_hops, &logger,
@@ -102,6 +112,16 @@ impl<'a> Router for TestRouter<'a> {
        fn notify_payment_probe_failed(&self, _path: &[&RouteHop], _short_channel_id: u64) {}
 }
 
+#[cfg(feature = "std")] // If we put this on the `if`, we get "attributes are not yet allowed on `if` expressions" on 1.41.1
+impl<'a> Drop for TestRouter<'a> {
+       fn drop(&mut self) {
+               if std::thread::panicking() {
+                       return;
+               }
+               assert!(self.next_routes.lock().unwrap().is_empty());
+       }
+}
+
 pub struct OnlyReadsKeysInterface {}
 
 impl EntropySource for OnlyReadsKeysInterface {