Fix blinded recipient fail on receive reqs violation

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

diff --git a/lightning/src/ln/blinded_payment_tests.rs b/lightning/src/ln/blinded_payment_tests.rs
index 2ac66d5e8261237390424815c538893b89eba535..72df4e158519988980f3355e6a75403d878ffe51 100644 (file)
--- a/lightning/src/ln/blinded_payment_tests.rs
+++ b/lightning/src/ln/blinded_payment_tests.rs
@@ -464,12 +464,16 @@ enum ReceiveCheckFail {
        RecipientFail,
        // Failure to decode the recipient's onion payload.
        OnionDecodeFail,
+       // The incoming HTLC did not satisfy our requirements; in this case it underpaid us according to
+       // the expected receive amount in the onion.
+       ReceiveRequirements,
 }
 
 #[test]
 fn multi_hop_receiver_fail() {
        do_multi_hop_receiver_fail(ReceiveCheckFail::RecipientFail);
        do_multi_hop_receiver_fail(ReceiveCheckFail::OnionDecodeFail);
+       do_multi_hop_receiver_fail(ReceiveCheckFail::ReceiveRequirements);
 }
 
 fn do_multi_hop_receiver_fail(check: ReceiveCheckFail) {
@@ -554,7 +558,14 @@ fn do_multi_hop_receiver_fail(check: ReceiveCheckFail) {
                        nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), update_add);
                        check_added_monitors!(nodes[2], 0);
                        do_commitment_signed_dance(&nodes[2], &nodes[1], &payment_event_1_2.commitment_msg, true, true);
-               }
+               },
+               ReceiveCheckFail::ReceiveRequirements => {
+                       let update_add = &mut payment_event_1_2.msgs[0];
+                       update_add.amount_msat -= 1;
+                       nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), update_add);
+                       check_added_monitors!(nodes[2], 0);
+                       do_commitment_signed_dance(&nodes[2], &nodes[1], &payment_event_1_2.commitment_msg, true, true);
+               },
        }
 
        let updates_2_1 = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());