From: Elias Rohrer <dev@tnull.de>
Date: Mon, 13 Nov 2023 10:29:04 +0000 (+0100)
Subject: DRY up Esplora/Electrum `integration_tests`
X-Git-Tag: v0.0.119~44^2~1
X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=commitdiff_plain;h=c2e81fbb820a3ef698cf73facee4c49d8c2583d1;p=rust-lightning

DRY up Esplora/Electrum `integration_tests`
---

diff --git a/lightning-transaction-sync/tests/integration_tests.rs b/lightning-transaction-sync/tests/integration_tests.rs
index 80c2675f9..8aadf9a2e 100644
--- a/lightning-transaction-sync/tests/integration_tests.rs
+++ b/lightning-transaction-sync/tests/integration_tests.rs
@@ -15,6 +15,7 @@ use bitcoin::blockdata::constants::genesis_block;
 use bitcoin::network::constants::Network;
 use electrsd::bitcoind::bitcoincore_rpc::bitcoincore_rpc_json::AddressType;
 use bitcoind::bitcoincore_rpc::RpcApi;
+use bdk_macros::maybe_await;
 
 use std::env;
 use std::sync::Mutex;
@@ -152,136 +153,142 @@ impl Confirm for TestConfirmable {
 	}
 }
 
-#[test]
-#[cfg(feature = "esplora-blocking")]
-fn test_esplora_syncs() {
-	let (bitcoind, electrsd) = setup_bitcoind_and_electrsd();
-	generate_blocks_and_wait(&bitcoind, &electrsd, 101);
-	let mut logger = TestLogger::new();
-	let esplora_url = format!("http://{}", electrsd.esplora_url.as_ref().unwrap());
-	let tx_sync = EsploraSyncClient::new(esplora_url, &mut logger);
-	let confirmable = TestConfirmable::new();
+macro_rules! test_syncing {
+	($tx_sync: expr, $confirmable: expr, $bitcoind: expr, $electrsd: expr) => {{
+		// Check we pick up on new best blocks
+		assert_eq!($confirmable.best_block.lock().unwrap().1, 0);
 
-	// Check we pick up on new best blocks
-	assert_eq!(confirmable.best_block.lock().unwrap().1, 0);
+		maybe_await!($tx_sync.sync(vec![&$confirmable])).unwrap();
+		assert_eq!($confirmable.best_block.lock().unwrap().1, 102);
 
-	tx_sync.sync(vec![&confirmable]).unwrap();
-	assert_eq!(confirmable.best_block.lock().unwrap().1, 102);
+		let events = std::mem::take(&mut *$confirmable.events.lock().unwrap());
+		assert_eq!(events.len(), 1);
 
-	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
-	assert_eq!(events.len(), 1);
-
-	// Check registered confirmed transactions are marked confirmed
-	let new_address = bitcoind.client.get_new_address(Some("test"),
+		// Check registered confirmed transactions are marked confirmed
+		let new_address = $bitcoind.client.get_new_address(Some("test"),
 		Some(AddressType::Legacy)).unwrap().assume_checked();
-	let txid = bitcoind.client.send_to_address(&new_address, Amount::from_sat(5000), None, None,
+		let txid = $bitcoind.client.send_to_address(&new_address, Amount::from_sat(5000), None, None,
 		None, None, None, None).unwrap();
-	let second_txid = bitcoind.client.send_to_address(&new_address, Amount::from_sat(5000), None,
+		let second_txid = $bitcoind.client.send_to_address(&new_address, Amount::from_sat(5000), None,
 		None, None, None, None, None).unwrap();
-	tx_sync.register_tx(&txid, &new_address.script_pubkey());
-
-	tx_sync.sync(vec![&confirmable]).unwrap();
-
-	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
-	assert_eq!(events.len(), 0);
-	assert!(confirmable.confirmed_txs.lock().unwrap().is_empty());
-	assert!(confirmable.unconfirmed_txs.lock().unwrap().is_empty());
-
-	generate_blocks_and_wait(&bitcoind, &electrsd, 1);
-	tx_sync.sync(vec![&confirmable]).unwrap();
-
-	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
-	assert_eq!(events.len(), 2);
-	assert!(confirmable.confirmed_txs.lock().unwrap().contains_key(&txid));
-	assert!(confirmable.unconfirmed_txs.lock().unwrap().is_empty());
-
-	// Now take an arbitrary output of the second transaction and check we'll confirm its spend.
-	let tx_res = bitcoind.client.get_transaction(&second_txid, None).unwrap();
-	let block_hash = tx_res.info.blockhash.unwrap();
-	let tx = tx_res.transaction().unwrap();
-	let prev_outpoint = tx.input.first().unwrap().previous_output;
-	let prev_tx = bitcoind.client.get_transaction(&prev_outpoint.txid, None).unwrap().transaction()
-		.unwrap();
-	let prev_script_pubkey = prev_tx.output[prev_outpoint.vout as usize].script_pubkey.clone();
-	let output = WatchedOutput {
-		block_hash: Some(block_hash),
-		outpoint: OutPoint { txid: prev_outpoint.txid, index: prev_outpoint.vout as u16 },
-		script_pubkey: prev_script_pubkey
-	};
+		$tx_sync.register_tx(&txid, &new_address.payload.script_pubkey());
+
+		maybe_await!($tx_sync.sync(vec![&$confirmable])).unwrap();
+
+		let events = std::mem::take(&mut *$confirmable.events.lock().unwrap());
+		assert_eq!(events.len(), 0);
+		assert!($confirmable.confirmed_txs.lock().unwrap().is_empty());
+		assert!($confirmable.unconfirmed_txs.lock().unwrap().is_empty());
+
+		generate_blocks_and_wait(&$bitcoind, &$electrsd, 1);
+		maybe_await!($tx_sync.sync(vec![&$confirmable])).unwrap();
+
+		let events = std::mem::take(&mut *$confirmable.events.lock().unwrap());
+		assert_eq!(events.len(), 2);
+		assert!($confirmable.confirmed_txs.lock().unwrap().contains_key(&txid));
+		assert!($confirmable.unconfirmed_txs.lock().unwrap().is_empty());
+
+		// Now take an arbitrary output of the second transaction and check we'll confirm its spend.
+		let tx_res = $bitcoind.client.get_transaction(&second_txid, None).unwrap();
+		let block_hash = tx_res.info.blockhash.unwrap();
+		let tx = tx_res.transaction().unwrap();
+		let prev_outpoint = tx.input.first().unwrap().previous_output;
+		let prev_tx = $bitcoind.client.get_transaction(&prev_outpoint.txid, None).unwrap().transaction()
+			.unwrap();
+		let prev_script_pubkey = prev_tx.output[prev_outpoint.vout as usize].script_pubkey.clone();
+		let output = WatchedOutput {
+			block_hash: Some(block_hash),
+			outpoint: OutPoint { txid: prev_outpoint.txid, index: prev_outpoint.vout as u16 },
+			script_pubkey: prev_script_pubkey
+		};
+
+		$tx_sync.register_output(output);
+		maybe_await!($tx_sync.sync(vec![&$confirmable])).unwrap();
+
+		let events = std::mem::take(&mut *$confirmable.events.lock().unwrap());
+		assert_eq!(events.len(), 1);
+		assert!($confirmable.confirmed_txs.lock().unwrap().contains_key(&second_txid));
+		assert_eq!($confirmable.confirmed_txs.lock().unwrap().len(), 2);
+		assert!($confirmable.unconfirmed_txs.lock().unwrap().is_empty());
+
+		// Check previously confirmed transactions are marked unconfirmed when they are reorged.
+		let best_block_hash = $bitcoind.client.get_best_block_hash().unwrap();
+		$bitcoind.client.invalidate_block(&best_block_hash).unwrap();
+
+		// We're getting back to the previous height with a new tip, but best block shouldn't change.
+		generate_blocks_and_wait(&$bitcoind, &$electrsd, 1);
+		assert_ne!($bitcoind.client.get_best_block_hash().unwrap(), best_block_hash);
+		maybe_await!($tx_sync.sync(vec![&$confirmable])).unwrap();
+		let events = std::mem::take(&mut *$confirmable.events.lock().unwrap());
+		assert_eq!(events.len(), 0);
+
+		// Now we're surpassing previous height, getting new tip.
+		generate_blocks_and_wait(&$bitcoind, &$electrsd, 1);
+		assert_ne!($bitcoind.client.get_best_block_hash().unwrap(), best_block_hash);
+		maybe_await!($tx_sync.sync(vec![&$confirmable])).unwrap();
+
+		// Transactions still confirmed but under new tip.
+		assert!($confirmable.confirmed_txs.lock().unwrap().contains_key(&txid));
+		assert!($confirmable.confirmed_txs.lock().unwrap().contains_key(&second_txid));
+		assert!($confirmable.unconfirmed_txs.lock().unwrap().is_empty());
+
+		// Check we got unconfirmed, then reconfirmed in the meantime.
+		let mut seen_txids = HashSet::new();
+		let events = std::mem::take(&mut *$confirmable.events.lock().unwrap());
+		assert_eq!(events.len(), 5);
+
+		match events[0] {
+			TestConfirmableEvent::Unconfirmed(t) => {
+				assert!(t == txid || t == second_txid);
+				assert!(seen_txids.insert(t));
+			},
+			_ => panic!("Unexpected event"),
+		}
 
-	tx_sync.register_output(output);
-	tx_sync.sync(vec![&confirmable]).unwrap();
-
-	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
-	assert_eq!(events.len(), 1);
-	assert!(confirmable.confirmed_txs.lock().unwrap().contains_key(&second_txid));
-	assert_eq!(confirmable.confirmed_txs.lock().unwrap().len(), 2);
-	assert!(confirmable.unconfirmed_txs.lock().unwrap().is_empty());
-
-	// Check previously confirmed transactions are marked unconfirmed when they are reorged.
-	let best_block_hash = bitcoind.client.get_best_block_hash().unwrap();
-	bitcoind.client.invalidate_block(&best_block_hash).unwrap();
-
-	// We're getting back to the previous height with a new tip, but best block shouldn't change.
-	generate_blocks_and_wait(&bitcoind, &electrsd, 1);
-	assert_ne!(bitcoind.client.get_best_block_hash().unwrap(), best_block_hash);
-	tx_sync.sync(vec![&confirmable]).unwrap();
-	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
-	assert_eq!(events.len(), 0);
-
-	// Now we're surpassing previous height, getting new tip.
-	generate_blocks_and_wait(&bitcoind, &electrsd, 1);
-	assert_ne!(bitcoind.client.get_best_block_hash().unwrap(), best_block_hash);
-	tx_sync.sync(vec![&confirmable]).unwrap();
-
-	// Transactions still confirmed but under new tip.
-	assert!(confirmable.confirmed_txs.lock().unwrap().contains_key(&txid));
-	assert!(confirmable.confirmed_txs.lock().unwrap().contains_key(&second_txid));
-	assert!(confirmable.unconfirmed_txs.lock().unwrap().is_empty());
-
-	// Check we got unconfirmed, then reconfirmed in the meantime.
-	let mut seen_txids = HashSet::new();
-	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
-	assert_eq!(events.len(), 5);
-
-	match events[0] {
-		TestConfirmableEvent::Unconfirmed(t) => {
-			assert!(t == txid || t == second_txid);
-			assert!(seen_txids.insert(t));
-		},
-		_ => panic!("Unexpected event"),
-	}
+		match events[1] {
+			TestConfirmableEvent::Unconfirmed(t) => {
+				assert!(t == txid || t == second_txid);
+				assert!(seen_txids.insert(t));
+			},
+			_ => panic!("Unexpected event"),
+		}
 
-	match events[1] {
-		TestConfirmableEvent::Unconfirmed(t) => {
-			assert!(t == txid || t == second_txid);
-			assert!(seen_txids.insert(t));
-		},
-		_ => panic!("Unexpected event"),
-	}
+		match events[2] {
+			TestConfirmableEvent::BestBlockUpdated(..) => {},
+			_ => panic!("Unexpected event"),
+		}
 
-	match events[2] {
-		TestConfirmableEvent::BestBlockUpdated(..) => {},
-		_ => panic!("Unexpected event"),
-	}
+		match events[3] {
+			TestConfirmableEvent::Confirmed(t, _, _) => {
+				assert!(t == txid || t == second_txid);
+				assert!(seen_txids.remove(&t));
+			},
+			_ => panic!("Unexpected event"),
+		}
 
-	match events[3] {
-		TestConfirmableEvent::Confirmed(t, _, _) => {
-			assert!(t == txid || t == second_txid);
-			assert!(seen_txids.remove(&t));
-		},
-		_ => panic!("Unexpected event"),
-	}
+		match events[4] {
+			TestConfirmableEvent::Confirmed(t, _, _) => {
+				assert!(t == txid || t == second_txid);
+				assert!(seen_txids.remove(&t));
+			},
+			_ => panic!("Unexpected event"),
+		}
 
-	match events[4] {
-		TestConfirmableEvent::Confirmed(t, _, _) => {
-			assert!(t == txid || t == second_txid);
-			assert!(seen_txids.remove(&t));
-		},
-		_ => panic!("Unexpected event"),
-	}
+		assert_eq!(seen_txids.len(), 0);
+	}};
+}
 
-	assert_eq!(seen_txids.len(), 0);
+#[test]
+#[cfg(feature = "esplora-blocking")]
+fn test_esplora_syncs() {
+	let (bitcoind, electrsd) = setup_bitcoind_and_electrsd();
+	generate_blocks_and_wait(&bitcoind, &electrsd, 101);
+	let mut logger = TestLogger::new();
+	let esplora_url = format!("http://{}", electrsd.esplora_url.as_ref().unwrap());
+	let tx_sync = EsploraSyncClient::new(esplora_url, &mut logger);
+	let confirmable = TestConfirmable::new();
+
+	test_syncing!(tx_sync, confirmable, bitcoind, electrsd);
 }
 
 #[tokio::test]
@@ -294,126 +301,7 @@ async fn test_esplora_syncs() {
 	let tx_sync = EsploraSyncClient::new(esplora_url, &mut logger);
 	let confirmable = TestConfirmable::new();
 
-	// Check we pick up on new best blocks
-	assert_eq!(confirmable.best_block.lock().unwrap().1, 0);
-
-	tx_sync.sync(vec![&confirmable]).await.unwrap();
-	assert_eq!(confirmable.best_block.lock().unwrap().1, 102);
-
-	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
-	assert_eq!(events.len(), 1);
-
-	// Check registered confirmed transactions are marked confirmed
-	let new_address = bitcoind.client.get_new_address(Some("test"),
-		Some(AddressType::Legacy)).unwrap().assume_checked();
-	let txid = bitcoind.client.send_to_address(&new_address, Amount::from_sat(5000), None, None,
-		None, None, None, None).unwrap();
-	let second_txid = bitcoind.client.send_to_address(&new_address, Amount::from_sat(5000), None,
-		None, None, None, None, None).unwrap();
-	tx_sync.register_tx(&txid, &new_address.script_pubkey());
-
-	tx_sync.sync(vec![&confirmable]).await.unwrap();
-
-	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
-	assert_eq!(events.len(), 0);
-	assert!(confirmable.confirmed_txs.lock().unwrap().is_empty());
-	assert!(confirmable.unconfirmed_txs.lock().unwrap().is_empty());
-
-	generate_blocks_and_wait(&bitcoind, &electrsd, 1);
-	tx_sync.sync(vec![&confirmable]).await.unwrap();
-
-	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
-	assert_eq!(events.len(), 2);
-	assert!(confirmable.confirmed_txs.lock().unwrap().contains_key(&txid));
-	assert!(confirmable.unconfirmed_txs.lock().unwrap().is_empty());
-
-	// Now take an arbitrary output of the second transaction and check we'll confirm its spend.
-	let tx_res = bitcoind.client.get_transaction(&second_txid, None).unwrap();
-	let block_hash = tx_res.info.blockhash.unwrap();
-	let tx = tx_res.transaction().unwrap();
-	let prev_outpoint = tx.input.first().unwrap().previous_output;
-	let prev_tx = bitcoind.client.get_transaction(&prev_outpoint.txid, None).unwrap().transaction()
-		.unwrap();
-	let prev_script_pubkey = prev_tx.output[prev_outpoint.vout as usize].script_pubkey.clone();
-	let output = WatchedOutput {
-		block_hash: Some(block_hash),
-		outpoint: OutPoint { txid: prev_outpoint.txid, index: prev_outpoint.vout as u16 },
-		script_pubkey: prev_script_pubkey
-	};
-
-	tx_sync.register_output(output);
-	tx_sync.sync(vec![&confirmable]).await.unwrap();
-
-	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
-	assert_eq!(events.len(), 1);
-	assert!(confirmable.confirmed_txs.lock().unwrap().contains_key(&second_txid));
-	assert_eq!(confirmable.confirmed_txs.lock().unwrap().len(), 2);
-	assert!(confirmable.unconfirmed_txs.lock().unwrap().is_empty());
-
-	// Check previously confirmed transactions are marked unconfirmed when they are reorged.
-	let best_block_hash = bitcoind.client.get_best_block_hash().unwrap();
-	bitcoind.client.invalidate_block(&best_block_hash).unwrap();
-
-	// We're getting back to the previous height with a new tip, but best block shouldn't change.
-	generate_blocks_and_wait(&bitcoind, &electrsd, 1);
-	assert_ne!(bitcoind.client.get_best_block_hash().unwrap(), best_block_hash);
-	tx_sync.sync(vec![&confirmable]).await.unwrap();
-	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
-	assert_eq!(events.len(), 0);
-
-	// Now we're surpassing previous height, getting new tip.
-	generate_blocks_and_wait(&bitcoind, &electrsd, 1);
-	assert_ne!(bitcoind.client.get_best_block_hash().unwrap(), best_block_hash);
-	tx_sync.sync(vec![&confirmable]).await.unwrap();
-
-	// Transactions still confirmed but under new tip.
-	assert!(confirmable.confirmed_txs.lock().unwrap().contains_key(&txid));
-	assert!(confirmable.confirmed_txs.lock().unwrap().contains_key(&second_txid));
-	assert!(confirmable.unconfirmed_txs.lock().unwrap().is_empty());
-
-	// Check we got unconfirmed, then reconfirmed in the meantime.
-	let mut seen_txids = HashSet::new();
-	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
-	assert_eq!(events.len(), 5);
-
-	match events[0] {
-		TestConfirmableEvent::Unconfirmed(t) => {
-			assert!(t == txid || t == second_txid);
-			assert!(seen_txids.insert(t));
-		},
-		_ => panic!("Unexpected event"),
-	}
-
-	match events[1] {
-		TestConfirmableEvent::Unconfirmed(t) => {
-			assert!(t == txid || t == second_txid);
-			assert!(seen_txids.insert(t));
-		},
-		_ => panic!("Unexpected event"),
-	}
-
-	match events[2] {
-		TestConfirmableEvent::BestBlockUpdated(..) => {},
-		_ => panic!("Unexpected event"),
-	}
-
-	match events[3] {
-		TestConfirmableEvent::Confirmed(t, _, _) => {
-			assert!(t == txid || t == second_txid);
-			assert!(seen_txids.remove(&t));
-		},
-		_ => panic!("Unexpected event"),
-	}
-
-	match events[4] {
-		TestConfirmableEvent::Confirmed(t, _, _) => {
-			assert!(t == txid || t == second_txid);
-			assert!(seen_txids.remove(&t));
-		},
-		_ => panic!("Unexpected event"),
-	}
-
-	assert_eq!(seen_txids.len(), 0);
+	test_syncing!(tx_sync, confirmable, bitcoind, electrsd);
 }
 
 #[test]
@@ -425,125 +313,5 @@ fn test_electrum_syncs() {
 	let electrum_url = format!("tcp://{}", electrsd.electrum_url);
 	let tx_sync = ElectrumSyncClient::new(electrum_url, &mut logger).unwrap();
 	let confirmable = TestConfirmable::new();
-
-	// Check we pick up on new best blocks
-	assert_eq!(confirmable.best_block.lock().unwrap().1, 0);
-
-	tx_sync.sync(vec![&confirmable]).unwrap();
-	assert_eq!(confirmable.best_block.lock().unwrap().1, 102);
-
-	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
-	assert_eq!(events.len(), 1);
-
-	// Check registered confirmed transactions are marked confirmed
-	let new_address = bitcoind.client.get_new_address(Some("test"),
-		Some(AddressType::Legacy)).unwrap().assume_checked();
-	let txid = bitcoind.client.send_to_address(&new_address, Amount::from_sat(5000), None, None,
-		None, None, None, None).unwrap();
-	let second_txid = bitcoind.client.send_to_address(&new_address, Amount::from_sat(5000), None,
-		None, None, None, None, None).unwrap();
-	tx_sync.register_tx(&txid, &new_address.script_pubkey());
-
-	tx_sync.sync(vec![&confirmable]).unwrap();
-
-	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
-	assert_eq!(events.len(), 0);
-	assert!(confirmable.confirmed_txs.lock().unwrap().is_empty());
-	assert!(confirmable.unconfirmed_txs.lock().unwrap().is_empty());
-
-	generate_blocks_and_wait(&bitcoind, &electrsd, 1);
-	tx_sync.sync(vec![&confirmable]).unwrap();
-
-	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
-	assert_eq!(events.len(), 2);
-	assert!(confirmable.confirmed_txs.lock().unwrap().contains_key(&txid));
-	assert!(confirmable.unconfirmed_txs.lock().unwrap().is_empty());
-
-	// Now take an arbitrary output of the second transaction and check we'll confirm its spend.
-	let tx_res = bitcoind.client.get_transaction(&second_txid, None).unwrap();
-	let block_hash = tx_res.info.blockhash.unwrap();
-	let tx = tx_res.transaction().unwrap();
-	let prev_outpoint = tx.input.first().unwrap().previous_output;
-	let prev_tx = bitcoind.client.get_transaction(&prev_outpoint.txid, None).unwrap().transaction()
-		.unwrap();
-	let prev_script_pubkey = prev_tx.output[prev_outpoint.vout as usize].script_pubkey.clone();
-	let output = WatchedOutput {
-		block_hash: Some(block_hash),
-		outpoint: OutPoint { txid: prev_outpoint.txid, index: prev_outpoint.vout as u16 },
-		script_pubkey: prev_script_pubkey
-	};
-
-	tx_sync.register_output(output);
-	tx_sync.sync(vec![&confirmable]).unwrap();
-
-	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
-	assert_eq!(events.len(), 1);
-	assert!(confirmable.confirmed_txs.lock().unwrap().contains_key(&second_txid));
-	assert_eq!(confirmable.confirmed_txs.lock().unwrap().len(), 2);
-	assert!(confirmable.unconfirmed_txs.lock().unwrap().is_empty());
-
-	// Check previously confirmed transactions are marked unconfirmed when they are reorged.
-	let best_block_hash = bitcoind.client.get_best_block_hash().unwrap();
-	bitcoind.client.invalidate_block(&best_block_hash).unwrap();
-
-	// We're getting back to the previous height with a new tip, but best block shouldn't change.
-	generate_blocks_and_wait(&bitcoind, &electrsd, 1);
-	assert_ne!(bitcoind.client.get_best_block_hash().unwrap(), best_block_hash);
-	tx_sync.sync(vec![&confirmable]).unwrap();
-	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
-	assert_eq!(events.len(), 0);
-
-	// Now we're surpassing previous height, getting new tip.
-	generate_blocks_and_wait(&bitcoind, &electrsd, 1);
-	assert_ne!(bitcoind.client.get_best_block_hash().unwrap(), best_block_hash);
-	tx_sync.sync(vec![&confirmable]).unwrap();
-
-	// Transactions still confirmed but under new tip.
-	assert!(confirmable.confirmed_txs.lock().unwrap().contains_key(&txid));
-	assert!(confirmable.confirmed_txs.lock().unwrap().contains_key(&second_txid));
-	assert!(confirmable.unconfirmed_txs.lock().unwrap().is_empty());
-
-	// Check we got unconfirmed, then reconfirmed in the meantime.
-	let mut seen_txids = HashSet::new();
-	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
-	assert_eq!(events.len(), 5);
-
-	match events[0] {
-		TestConfirmableEvent::Unconfirmed(t) => {
-			assert!(t == txid || t == second_txid);
-			assert!(seen_txids.insert(t));
-		},
-		_ => panic!("Unexpected event"),
-	}
-
-	match events[1] {
-		TestConfirmableEvent::Unconfirmed(t) => {
-			assert!(t == txid || t == second_txid);
-			assert!(seen_txids.insert(t));
-		},
-		_ => panic!("Unexpected event"),
-	}
-
-	match events[2] {
-		TestConfirmableEvent::BestBlockUpdated(..) => {},
-		_ => panic!("Unexpected event"),
-	}
-
-	match events[3] {
-		TestConfirmableEvent::Confirmed(t, _, _) => {
-			assert!(t == txid || t == second_txid);
-			assert!(seen_txids.remove(&t));
-		},
-		_ => panic!("Unexpected event"),
-	}
-
-	match events[4] {
-		TestConfirmableEvent::Confirmed(t, _, _) => {
-			assert!(t == txid || t == second_txid);
-			assert!(seen_txids.remove(&t));
-		},
-		_ => panic!("Unexpected event"),
-	}
-
-	assert_eq!(seen_txids.len(), 0);
+	test_syncing!(tx_sync, confirmable, bitcoind, electrsd);
 }