+#[test]
+fn test_user_shutdown_script() {
+ let mut config = test_default_channel_config();
+ config.channel_handshake_config.announced_channel = true;
+ config.channel_handshake_limits.force_announced_channel_preference = false;
+ config.channel_handshake_config.commit_upfront_shutdown_pubkey = false;
+ let user_cfgs = [None, Some(config), None];
+ let chanmon_cfgs = create_chanmon_cfgs(3);
+ let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
+ let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs);
+ let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+ // Segwit v0 script of the form OP_0 <20-byte hash>
+ let script = Builder::new().push_int(0)
+ .push_slice(&[0; 20])
+ .into_script();
+
+ let shutdown_script = ShutdownScript::try_from(script.clone()).unwrap();
+
+ let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
+ nodes[1].node.close_channel_with_feerate_and_script(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id(), &nodes[0].node.get_our_node_id(), None, Some(shutdown_script)).unwrap();
+ check_added_monitors!(nodes[1], 1);
+
+ let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
+
+ assert_eq!(node_0_shutdown.scriptpubkey, script);
+}
+
+#[test]
+fn test_already_set_user_shutdown_script() {
+ let mut config = test_default_channel_config();
+ config.channel_handshake_config.announced_channel = true;
+ config.channel_handshake_limits.force_announced_channel_preference = false;
+ let user_cfgs = [None, Some(config), None];
+ let chanmon_cfgs = create_chanmon_cfgs(3);
+ let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
+ let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs);
+ let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+ // Segwit v0 script of the form OP_0 <20-byte hash>
+ let script = Builder::new().push_int(0)
+ .push_slice(&[0; 20])
+ .into_script();
+
+ let shutdown_script = ShutdownScript::try_from(script).unwrap();
+
+ let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
+ let result = nodes[1].node.close_channel_with_feerate_and_script(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id(), &nodes[0].node.get_our_node_id(), None, Some(shutdown_script));
+
+ assert_eq!(result, Err(APIError::APIMisuseError { err: "Cannot override shutdown script for a channel with one already set".to_string() }));
+}
+