+
+#[test]
+fn many_hops() {
+ // Check we can send over a route with many hops. This will exercise our logic for onion messages
+ // of size [`crate::onion_message::packet::BIG_PACKET_HOP_DATA_LEN`].
+ let num_nodes: usize = 25;
+ let nodes = create_nodes(num_nodes as u8);
+ let test_msg = TestCustomMessage::Response;
+
+ let mut intermediate_nodes = vec![];
+ for i in 1..(num_nodes-1) {
+ intermediate_nodes.push(nodes[i].get_node_pk());
+ }
+
+ let path = OnionMessagePath {
+ intermediate_nodes,
+ destination: Destination::Node(nodes[num_nodes-1].get_node_pk()),
+ };
+ nodes[0].messenger.send_onion_message(path, OnionMessageContents::Custom(test_msg), None).unwrap();
+ nodes[num_nodes-1].custom_message_handler.expect_message(TestCustomMessage::Response);
+ pass_along_path(&nodes);
+}