Add new block ConnectionStyles for transaction_unconfirmed

Previously `transaction_unconfirmed` was never called in tests!

Author: TheBlueMatt

lightning/src/ln/functional_test_utils.rs

@@ -85,20 +85,27 @@ pub enum ConnectStyle {
 	/// The same as BestBlockFirst, however when we have multiple blocks to connect, we only
 	/// make a single best_block_updated call.
 	BestBlockFirstSkippingBlocks,
+	/// Calls transactions_confirmed first, but only when connecting blocks. During disconnection
+	/// only `transaction_unconfirmed` is called.
+	BestBlockFirstReorgsOnlyTip,
 	/// Calls transactions_confirmed first, detecting transactions in the block before updating the
 	/// header and height information.
 	TransactionsFirst,
 	/// The same as TransactionsFirst, however when we have multiple blocks to connect, we only
 	/// make a single best_block_updated call.
 	TransactionsFirstSkippingBlocks,
+	/// Calls best_block_updated first, but only when connecting blocks. During disconnection only
+	/// `transaction_unconfirmed` is called.
+	TransactionsFirstReorgsOnlyTip,
 	/// Provides the full block via the chain::Listen interface. In the current code this is
 	/// equivalent to TransactionsFirst with some additional assertions.
 	FullBlockViaListen,
 }
 
 pub fn connect_blocks<'a, 'b, 'c, 'd>(node: &'a Node<'b, 'c, 'd>, depth: u32) -> BlockHash {
 	let skip_intermediaries = match *node.connect_style.borrow() {
-		ConnectStyle::BestBlockFirstSkippingBlocks|ConnectStyle::TransactionsFirstSkippingBlocks => true,
+		ConnectStyle::BestBlockFirstSkippingBlocks|ConnectStyle::TransactionsFirstSkippingBlocks|
+			ConnectStyle::BestBlockFirstReorgsOnlyTip|ConnectStyle::TransactionsFirstReorgsOnlyTip => true,
 		_ => false,
 	};
 
@@ -138,14 +145,14 @@ fn do_connect_block<'a, 'b, 'c, 'd>(node: &'a Node<'b, 'c, 'd>, block: Block, sk
 	if !skip_intermediaries {
 		let txdata: Vec<_> = block.txdata.iter().enumerate().collect();
 		match *node.connect_style.borrow() {
-			ConnectStyle::BestBlockFirst|ConnectStyle::BestBlockFirstSkippingBlocks => {
+			ConnectStyle::BestBlockFirst|ConnectStyle::BestBlockFirstSkippingBlocks|ConnectStyle::BestBlockFirstReorgsOnlyTip => {
 				node.chain_monitor.chain_monitor.best_block_updated(&block.header, height);
 				call_claimable_balances(node);
 				node.chain_monitor.chain_monitor.transactions_confirmed(&block.header, &txdata, height);
 				node.node.best_block_updated(&block.header, height);
 				node.node.transactions_confirmed(&block.header, &txdata, height);
 			},
-			ConnectStyle::TransactionsFirst|ConnectStyle::TransactionsFirstSkippingBlocks => {
+			ConnectStyle::TransactionsFirst|ConnectStyle::TransactionsFirstSkippingBlocks|ConnectStyle::TransactionsFirstReorgsOnlyTip => {
 				node.chain_monitor.chain_monitor.transactions_confirmed(&block.header, &txdata, height);
 				call_claimable_balances(node);
 				node.chain_monitor.chain_monitor.best_block_updated(&block.header, height);
@@ -181,6 +188,12 @@ pub fn disconnect_blocks<'a, 'b, 'c, 'd>(node: &'a Node<'b, 'c, 'd>, count: u32)
 					node.node.best_block_updated(&prev.0.header, prev.1);
 				}
 			},
+			ConnectStyle::BestBlockFirstReorgsOnlyTip|ConnectStyle::TransactionsFirstReorgsOnlyTip => {
+				for tx in orig.0.txdata {
+					node.chain_monitor.chain_monitor.transaction_unconfirmed(&tx.txid());
+					node.node.transaction_unconfirmed(&tx.txid());
+				}
+			},
 			_ => {
 				node.chain_monitor.chain_monitor.best_block_updated(&prev.0.header, prev.1);
 				node.node.best_block_updated(&prev.0.header, prev.1);

lightning/src/ln/reorg_tests.rs

@@ -314,6 +314,11 @@ fn test_unconf_chan() {
 	do_test_unconf_chan(false, true, false, ConnectStyle::BestBlockFirstSkippingBlocks);
 	do_test_unconf_chan(true, false, false, ConnectStyle::BestBlockFirstSkippingBlocks);
 	do_test_unconf_chan(false, false, false, ConnectStyle::BestBlockFirstSkippingBlocks);
+
+	do_test_unconf_chan(true, true, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
+	do_test_unconf_chan(false, true, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
+	do_test_unconf_chan(true, false, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
+	do_test_unconf_chan(false, false, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
 }
 
 #[test]
@@ -331,6 +336,11 @@ fn test_unconf_chan_via_funding_unconfirmed() {
 	do_test_unconf_chan(true, false, true, ConnectStyle::BestBlockFirstSkippingBlocks);
 	do_test_unconf_chan(false, false, true, ConnectStyle::BestBlockFirstSkippingBlocks);
 
+	do_test_unconf_chan(true, true, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
+	do_test_unconf_chan(false, true, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
+	do_test_unconf_chan(true, false, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
+	do_test_unconf_chan(false, false, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
+
 	do_test_unconf_chan(true, true, true, ConnectStyle::FullBlockViaListen);
 	do_test_unconf_chan(false, true, true, ConnectStyle::FullBlockViaListen);
 	do_test_unconf_chan(true, false, true, ConnectStyle::FullBlockViaListen);
@@ -539,7 +549,9 @@ fn do_test_to_remote_after_local_detection(style: ConnectStyle) {
 fn test_to_remote_after_local_detection() {
 	do_test_to_remote_after_local_detection(ConnectStyle::BestBlockFirst);
 	do_test_to_remote_after_local_detection(ConnectStyle::BestBlockFirstSkippingBlocks);
+	do_test_to_remote_after_local_detection(ConnectStyle::BestBlockFirstReorgsOnlyTip);
 	do_test_to_remote_after_local_detection(ConnectStyle::TransactionsFirst);
 	do_test_to_remote_after_local_detection(ConnectStyle::TransactionsFirstSkippingBlocks);
+	do_test_to_remote_after_local_detection(ConnectStyle::TransactionsFirstReorgsOnlyTip);
 	do_test_to_remote_after_local_detection(ConnectStyle::FullBlockViaListen);
 }