try to test

Author: TheBlueMatt

lightning/src/ln/mod.rs

@@ -99,5 +99,8 @@ mod offers_tests;
 #[cfg(test)]
 #[allow(unused_mut)]
 mod dual_funding_tests;
+#[cfg(all(not(taproot), test))]
+#[allow(unused_mut)]
+mod upgrade_downgrade_tests;
 
 pub use self::peer_channel_encryptor::LN_MAX_MSG_LEN;

lightning/src/ln/upgrade_downgrade_tests.rs

@@ -0,0 +1,45 @@
+// This file is Copyright its original authors, visible in version control
+// history.
+//
+// This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
+// or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
+// You may not use this file except in accordance with one or both of these
+// licenses.
+
+//! Tests which test upgrading from previous versions of LDK or downgrading to previous versions of
+//! LDK.
+
+use crate::ln::functional_test_utils::*;
+use crate::ln::msgs::ChannelMessageHandler;
+use crate::types::payment::PaymentPreimage;
+use crate::util::ser::Writeable;
+
+#[test]
+fn simple_upgrade() {
+	let chanmon_cfgs = create_chanmon_cfgs(2);
+	let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
+
+	let (persister, chain_monitor);
+	let nodes_0_deserialized;
+
+	let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
+	let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+
+	let chan_id = create_announced_chan_between_nodes(&nodes, 0, 1).2;
+
+	let payment_preimage = route_payment(&nodes[0], &[&nodes[1]], 1_000_000);
+	let preimage = PaymentPreimage(payment_preimage.0.0);
+
+	nodes[0].node.peer_disconnected(nodes[1].node.get_our_node_id());
+	nodes[1].node.peer_disconnected(nodes[0].node.get_our_node_id());
+
+	let node_a = nodes[0].node.encode();
+	let mon_a = get_monitor!(nodes[0], chan_id).encode();
+
+	reload_node!(nodes[0], test_default_channel_config(), &node_a, &[&mon_a], persister, chain_monitor, nodes_0_deserialized);
+
+	reconnect_nodes(ReconnectArgs::new(&nodes[0], &nodes[1]));
+
+	claim_payment(&nodes[0], &[&nodes[1]], preimage);
+}