Test blinded Trampoline payload serialization.

Author: arik-so

lightning/src/ln/msgs.rs

@@ -3326,7 +3326,7 @@ mod tests {
 	use bitcoin::hex::DisplayHex;
 	use crate::ln::types::{ChannelId, PaymentPreimage, PaymentHash, PaymentSecret};
 	use crate::ln::features::{ChannelFeatures, ChannelTypeFeatures, InitFeatures, NodeFeatures};
-	use crate::ln::msgs::{self, FinalOnionHopData, OnionErrorPacket, CommonOpenChannelFields, CommonAcceptChannelFields, TrampolineOnionPacket};
+	use crate::ln::msgs::{self, FinalOnionHopData, OnionErrorPacket, CommonOpenChannelFields, CommonAcceptChannelFields, TrampolineOnionPacket, OutboundTrampolinePayload};
 	use crate::ln::msgs::SocketAddress;
 	use crate::routing::gossip::{NodeAlias, NodeId};
 	use crate::util::ser::{BigSize, FixedLengthReader, Hostname, LengthReadable, Readable, ReadableArgs, TransactionU16LenLimited, Writeable};
@@ -3352,6 +3352,7 @@ mod tests {
 
 	#[cfg(feature = "std")]
 	use std::net::{Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6, ToSocketAddrs};
+	use crate::blinded_path::{BlindedPath, Direction, IntroductionNode};
 	#[cfg(feature = "std")]
 	use crate::ln::msgs::SocketAddressParseError;
 
@@ -4699,6 +4700,25 @@ mod tests {
 		assert_eq!(encoded_trampoline_packet, expected_eclair_trampoline_packet);
 	}
 
+	#[test]
+	fn encoding_outbound_trampoline_payload() {
+		let public_key = PublicKey::from_slice(&<Vec<u8>>::from_hex("02eec7245d6b7d2ccb30380bfbe2a3648cd7a942653f5aa340edcea1f283686619").unwrap()).unwrap();
+		let trampoline_payload = OutboundTrampolinePayload::BlindedForward {
+			amt_to_forward: 100000000,
+			outgoing_cltv_value: 800000,
+			payment_paths: vec![
+				BlindedPath {
+					introduction_node: IntroductionNode::DirectedShortChannelId(Direction::NodeOne, 12),
+					blinding_point: public_key,
+					blinded_hops: vec![],
+				}
+			],
+			invoice_features: None,
+		};
+		let serialized_payload = trampoline_payload.encode().to_lower_hex_string();
+		assert_eq!(serialized_payload, "3c020405f5e10004030c3500fe000102362b00000000000000000c02eec7245d6b7d2ccb30380bfbe2a3648cd7a942653f5aa340edcea1f28368661900");
+	}
+
 	#[test]
 	fn query_channel_range_end_blocknum() {
 		let tests: Vec<(u32, u32, u32)> = vec![