Enforce `max_balance_dust_htlc_msat` at HTLC reception/forward

[rust-lightning] / lightning / src / ln / functional_test_utils.rs

diff --git a/lightning/src/ln/functional_test_utils.rs b/lightning/src/ln/functional_test_utils.rs
index feeb691b1ceb9b0029d82c42e1b994285c65002e..dfda381bfc72d63945e057c9e72a0ee5f406bfd2 100644 (file)
--- a/lightning/src/ln/functional_test_utils.rs
+++ b/lightning/src/ln/functional_test_utils.rs
@@ -1006,6 +1006,20 @@ macro_rules! expect_payment_sent {
        }
 }
 
+macro_rules! expect_payment_forwarded {
+       ($node: expr, $expected_fee: expr, $upstream_force_closed: expr) => {
+               let events = $node.node.get_and_clear_pending_events();
+               assert_eq!(events.len(), 1);
+               match events[0] {
+                       Event::PaymentForwarded { fee_earned_msat, claim_from_onchain_tx } => {
+                               assert_eq!(fee_earned_msat, $expected_fee);
+                               assert_eq!(claim_from_onchain_tx, $upstream_force_closed);
+                       },
+                       _ => panic!("Unexpected event"),
+               }
+       }
+}
+
 #[cfg(test)]
 macro_rules! expect_payment_failure_chan_update {
        ($node: expr, $scid: expr, $chan_closed: expr) => {
@@ -1170,6 +1184,8 @@ pub fn claim_payment_along_route<'a, 'b, 'c>(origin_node: &Node<'a, 'b, 'c>, exp
                        ($node: expr, $prev_node: expr, $new_msgs: expr) => {
                                {
                                        $node.node.handle_update_fulfill_htlc(&$prev_node.node.get_our_node_id(), &next_msgs.as_ref().unwrap().0);
+                                       let fee = $node.node.channel_state.lock().unwrap().by_id.get(&next_msgs.as_ref().unwrap().0.channel_id).unwrap().config.forwarding_fee_base_msat;
+                                       expect_payment_forwarded!($node, Some(fee as u64), false);
                                        check_added_monitors!($node, 1);
                                        let new_next_msgs = if $new_msgs {
                                                let events = $node.node.get_and_clear_pending_msg_events();
@@ -1368,6 +1384,9 @@ pub fn test_default_channel_config() -> UserConfig {
        // When most of our tests were written, the default HTLC minimum was fixed at 1000.
        // It now defaults to 1, so we simply set it to the expected value here.
        default_config.own_channel_config.our_htlc_minimum_msat = 1000;
+       // When most of our tests were written, we didn't have the notion of a `max_dust_htlc_exposure_msat`,
+       // It now defaults to 5_000_000 msat; to avoid interfering with tests we bump it to 50_000_000 msat.
+       default_config.channel_options.max_dust_htlc_exposure_msat = 50_000_000;
        default_config
 }