Test sending + receiving custom TLVs to blinded paths.

[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 198ded1cb4421aa8afbee8848f22c4381f2b7b3d..eb31be9eecf334ead7ece1d1d6ecd7b587534f61 100644 (file)
--- a/lightning/src/ln/blinded_payment_tests.rs
+++ b/lightning/src/ln/blinded_payment_tests.rs
@@ -1264,3 +1264,50 @@ fn blinded_mpp_keysend() {
                Some(payment_secret), ev.clone(), true, Some(keysend_preimage));
        claim_payment_along_route(&nodes[0], expected_route, false, keysend_preimage);
 }
+
+#[test]
+fn custom_tlvs_to_blinded_path() {
+       let chanmon_cfgs = create_chanmon_cfgs(2);
+       let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
+       let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
+       let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+       let chan_upd = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 0).0.contents;
+
+       let amt_msat = 5000;
+       let (payment_preimage, payment_hash, payment_secret) = get_payment_preimage_hash(&nodes[1], Some(amt_msat), None);
+       let payee_tlvs = ReceiveTlvs {
+               payment_secret,
+               payment_constraints: PaymentConstraints {
+                       max_cltv_expiry: u32::max_value(),
+                       htlc_minimum_msat: chan_upd.htlc_minimum_msat,
+               },
+       };
+       let mut secp_ctx = Secp256k1::new();
+       let blinded_path = BlindedPath::one_hop_for_payment(
+               nodes[1].node.get_our_node_id(), payee_tlvs, TEST_FINAL_CLTV as u16,
+               &chanmon_cfgs[1].keys_manager, &secp_ctx
+       ).unwrap();
+
+       let route_params = RouteParameters::from_payment_params_and_value(
+               PaymentParameters::blinded(vec![blinded_path]),
+               amt_msat,
+       );
+
+       let recipient_onion_fields = RecipientOnionFields::spontaneous_empty()
+               .with_custom_tlvs(vec![((1 << 16) + 1, vec![42, 42])])
+               .unwrap();
+       nodes[0].node.send_payment(payment_hash, recipient_onion_fields.clone(),
+               PaymentId(payment_hash.0), route_params, Retry::Attempts(0)).unwrap();
+       check_added_monitors(&nodes[0], 1);
+
+       let mut events = nodes[0].node.get_and_clear_pending_msg_events();
+       assert_eq!(events.len(), 1);
+       let ev = remove_first_msg_event_to_node(&nodes[1].node.get_our_node_id(), &mut events);
+
+       let path = &[&nodes[1]];
+       let args = PassAlongPathArgs::new(&nodes[0], path, amt_msat, payment_hash, ev)
+               .with_payment_secret(payment_secret)
+               .with_custom_tlvs(recipient_onion_fields.custom_tlvs.clone());
+       do_pass_along_path(args);
+       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage);
+}