Move test bitcoind/electrsd out of OnceCell

`OnceCell` doesn't call `drop`, which makes the spawned
`bitcoind`/`electrsd` instances linger around after our tests have
finished. To fix this, we move them out of `OnceCell` and let every test
that needs them spawn their own instances. This additional let us drop
the `OnceCell` dev dependency.

Author: tnull

lightning-transaction-sync/Cargo.toml

@@ -32,5 +32,4 @@ reqwest = { version = "0.11", optional = true, default-features = false, feature
 lightning = { version = "0.0.114", path = "../lightning", features = ["std"] }
 electrsd = { version = "0.22.0", features = ["legacy", "esplora_a33e97e1", "bitcoind_23_0"] }
 electrum-client = "0.12.0"
-once_cell = "1.16.0"
 tokio = { version = "1.14.0", features = ["full"] }

lightning-transaction-sync/tests/integration_tests.rs

@@ -12,78 +12,61 @@ use electrsd::bitcoind::bitcoincore_rpc::bitcoincore_rpc_json::AddressType;
 use bitcoind::bitcoincore_rpc::RpcApi;
 use electrum_client::ElectrumApi;
 
-use once_cell::sync::OnceCell;
-
 use std::env;
 use std::sync::Mutex;
 use std::time::Duration;
 use std::collections::{HashMap, HashSet};
 
-static BITCOIND: OnceCell<BitcoinD> = OnceCell::new();
-static ELECTRSD: OnceCell<ElectrsD> = OnceCell::new();
-static PREMINE: OnceCell<()> = OnceCell::new();
-static MINER_LOCK: OnceCell<Mutex<()>> = OnceCell::new();
-
-fn get_bitcoind() -> &'static BitcoinD {
-	BITCOIND.get_or_init(|| {
-		let bitcoind_exe =
-			env::var("BITCOIND_EXE").ok().or_else(|| bitcoind::downloaded_exe_path().ok()).expect(
-				"you need to provide an env var BITCOIND_EXE or specify a bitcoind version feature",
-				);
-		let mut conf = bitcoind::Conf::default();
-		conf.network = "regtest";
-		let bitcoind = BitcoinD::with_conf(bitcoind_exe, &conf).unwrap();
-		std::thread::sleep(Duration::from_secs(1));
-		bitcoind
-	})
-}
-
-fn get_electrsd() -> &'static ElectrsD {
-	ELECTRSD.get_or_init(|| {
-		let bitcoind = get_bitcoind();
-		let electrs_exe =
-			env::var("ELECTRS_EXE").ok().or_else(electrsd::downloaded_exe_path).expect(
-				"you need to provide env var ELECTRS_EXE or specify an electrsd version feature",
-			);
-		let mut conf = electrsd::Conf::default();
-		conf.http_enabled = true;
-		conf.network = "regtest";
-		let electrsd = ElectrsD::with_conf(electrs_exe, &bitcoind, &conf).unwrap();
-		std::thread::sleep(Duration::from_secs(1));
-		electrsd
-	})
+pub fn setup_bitcoind_and_electrsd() -> (BitcoinD, ElectrsD) {
+	let bitcoind_exe =
+		env::var("BITCOIND_EXE").ok().or_else(|| bitcoind::downloaded_exe_path().ok()).expect(
+			"you need to provide an env var BITCOIND_EXE or specify a bitcoind version feature",
+		);
+	let mut bitcoind_conf = bitcoind::Conf::default();
+	bitcoind_conf.network = "regtest";
+	let bitcoind = BitcoinD::with_conf(bitcoind_exe, &bitcoind_conf).unwrap();
+
+	let electrs_exe = env::var("ELECTRS_EXE")
+		.ok()
+		.or_else(electrsd::downloaded_exe_path)
+		.expect("you need to provide env var ELECTRS_EXE or specify an electrsd version feature");
+	let mut electrsd_conf = electrsd::Conf::default();
+	electrsd_conf.http_enabled = true;
+	electrsd_conf.network = "regtest";
+	let electrsd = ElectrsD::with_conf(electrs_exe, &bitcoind, &electrsd_conf).unwrap();
+	(bitcoind, electrsd)
 }
 
-fn generate_blocks_and_wait(num: usize) {
-	let miner_lock = MINER_LOCK.get_or_init(|| Mutex::new(()));
-	let _miner = miner_lock.lock().unwrap();
-	let cur_height = get_bitcoind().client.get_block_count().expect("failed to get current block height");
-	let address = get_bitcoind().client.get_new_address(Some("test"), Some(AddressType::Legacy)).expect("failed to get new address");
+pub fn generate_blocks_and_wait(bitcoind: &BitcoinD, electrsd: &ElectrsD, num: usize) {
+	let cur_height = bitcoind.client.get_block_count().expect("failed to get current block height");
+	let address = bitcoind
+		.client
+		.get_new_address(Some("test"), Some(AddressType::Legacy))
+		.expect("failed to get new address");
 	// TODO: expect this Result once the WouldBlock issue is resolved upstream.
-	let _block_hashes_res = get_bitcoind().client.generate_to_address(num as u64, &address);
-	wait_for_block(cur_height as usize + num);
+	let _block_hashes_res = bitcoind.client.generate_to_address(num as u64, &address);
+	wait_for_block(electrsd, cur_height as usize + num);
 }
 
-fn wait_for_block(min_height: usize) {
-	let mut header = match get_electrsd().client.block_headers_subscribe() {
+pub fn wait_for_block(electrsd: &ElectrsD, min_height: usize) {
+	let mut header = match electrsd.client.block_headers_subscribe() {
 		Ok(header) => header,
 		Err(_) => {
 			// While subscribing should succeed the first time around, we ran into some cases where
 			// it didn't. Since we can't proceed without subscribing, we try again after a delay
 			// and panic if it still fails.
 			std::thread::sleep(Duration::from_secs(1));
-			get_electrsd().client.block_headers_subscribe().expect("failed to subscribe to block headers")
+			electrsd.client.block_headers_subscribe().expect("failed to subscribe to block headers")
 		}
 	};
-
 	loop {
 		if header.height >= min_height {
 			break;
 		}
 		header = exponential_backoff_poll(|| {
-			get_electrsd().trigger().expect("failed to trigger electrsd");
-			get_electrsd().client.ping().expect("failed to ping electrsd");
-			get_electrsd().client.block_headers_pop().expect("failed to pop block header")
+			electrsd.trigger().expect("failed to trigger electrsd");
+			electrsd.client.ping().expect("failed to ping electrsd");
+			electrsd.client.block_headers_pop().expect("failed to pop block header")
 		});
 	}
 }
@@ -109,12 +92,6 @@ where
 	}
 }
 
-fn premine() {
-	PREMINE.get_or_init(|| {
-		generate_blocks_and_wait(101);
-	});
-}
-
 #[derive(Debug)]
 enum TestConfirmableEvent {
 	Confirmed(Txid, BlockHash, u32),
@@ -182,27 +159,25 @@ impl Logger for TestLogger {
 #[test]
 #[cfg(feature = "esplora-blocking")]
 fn test_esplora_syncs() {
-	premine();
+	let (bitcoind, electrsd) = setup_bitcoind_and_electrsd();
+	generate_blocks_and_wait(&bitcoind, &electrsd, 101);
 	let mut logger = TestLogger {};
-	let esplora_url = format!("http://{}", get_electrsd().esplora_url.as_ref().unwrap());
+	let esplora_url = format!("http://{}", electrsd.esplora_url.as_ref().unwrap());
 	let tx_sync = EsploraSyncClient::new(esplora_url, &mut logger);
 	let confirmable = TestConfirmable::new();
 
 	// Check we pick up on new best blocks
-	let expected_height = 0u32;
-	assert_eq!(confirmable.best_block.lock().unwrap().1, expected_height);
+	assert_eq!(confirmable.best_block.lock().unwrap().1, 0);
 
 	tx_sync.sync(vec![&confirmable]).unwrap();
-
-	let expected_height = get_bitcoind().client.get_block_count().unwrap() as u32;
-	assert_eq!(confirmable.best_block.lock().unwrap().1, expected_height);
+	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 = get_bitcoind().client.get_new_address(Some("test"), Some(AddressType::Legacy)).unwrap();
-	let txid = get_bitcoind().client.send_to_address(&new_address, Amount::from_sat(5000), None, None, None, None, None, None).unwrap();
+	let new_address = bitcoind.client.get_new_address(Some("test"), Some(AddressType::Legacy)).unwrap();
+	let 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();
@@ -212,7 +187,7 @@ fn test_esplora_syncs() {
 	assert!(confirmable.confirmed_txs.lock().unwrap().is_empty());
 	assert!(confirmable.unconfirmed_txs.lock().unwrap().is_empty());
 
-	generate_blocks_and_wait(1);
+	generate_blocks_and_wait(&bitcoind, &electrsd, 1);
 	tx_sync.sync(vec![&confirmable]).unwrap();
 
 	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
@@ -221,19 +196,19 @@ fn test_esplora_syncs() {
 	assert!(confirmable.unconfirmed_txs.lock().unwrap().is_empty());
 
 	// Check previously confirmed transactions are marked unconfirmed when they are reorged.
-	let best_block_hash = get_bitcoind().client.get_best_block_hash().unwrap();
-	get_bitcoind().client.invalidate_block(&best_block_hash).unwrap();
+	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(1);
-	assert_ne!(get_bitcoind().client.get_best_block_hash().unwrap(), best_block_hash);
+	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(1);
-	assert_ne!(get_bitcoind().client.get_best_block_hash().unwrap(), best_block_hash);
+	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();
 
 	// Transaction still confirmed but under new tip.
@@ -267,27 +242,25 @@ fn test_esplora_syncs() {
 #[tokio::test]
 #[cfg(feature = "esplora-async")]
 async fn test_esplora_syncs() {
-	premine();
+	let (bitcoind, electrsd) = setup_bitcoind_and_electrsd();
+	generate_blocks_and_wait(&bitcoind, &electrsd, 101);
 	let mut logger = TestLogger {};
-	let esplora_url = format!("http://{}", get_electrsd().esplora_url.as_ref().unwrap());
+	let esplora_url = format!("http://{}", electrsd.esplora_url.as_ref().unwrap());
 	let tx_sync = EsploraSyncClient::new(esplora_url, &mut logger);
 	let confirmable = TestConfirmable::new();
 
 	// Check we pick up on new best blocks
-	let expected_height = 0u32;
-	assert_eq!(confirmable.best_block.lock().unwrap().1, expected_height);
+	assert_eq!(confirmable.best_block.lock().unwrap().1, 0);
 
 	tx_sync.sync(vec![&confirmable]).await.unwrap();
-
-	let expected_height = get_bitcoind().client.get_block_count().unwrap() as u32;
-	assert_eq!(confirmable.best_block.lock().unwrap().1, expected_height);
+	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 = get_bitcoind().client.get_new_address(Some("test"), Some(AddressType::Legacy)).unwrap();
-	let txid = get_bitcoind().client.send_to_address(&new_address, Amount::from_sat(5000), None, None, None, None, None, None).unwrap();
+	let new_address = bitcoind.client.get_new_address(Some("test"), Some(AddressType::Legacy)).unwrap();
+	let 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();
@@ -297,7 +270,7 @@ async fn test_esplora_syncs() {
 	assert!(confirmable.confirmed_txs.lock().unwrap().is_empty());
 	assert!(confirmable.unconfirmed_txs.lock().unwrap().is_empty());
 
-	generate_blocks_and_wait(1);
+	generate_blocks_and_wait(&bitcoind, &electrsd, 1);
 	tx_sync.sync(vec![&confirmable]).await.unwrap();
 
 	let events = std::mem::take(&mut *confirmable.events.lock().unwrap());
@@ -306,19 +279,19 @@ async fn test_esplora_syncs() {
 	assert!(confirmable.unconfirmed_txs.lock().unwrap().is_empty());
 
 	// Check previously confirmed transactions are marked unconfirmed when they are reorged.
-	let best_block_hash = get_bitcoind().client.get_best_block_hash().unwrap();
-	get_bitcoind().client.invalidate_block(&best_block_hash).unwrap();
+	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(1);
-	assert_ne!(get_bitcoind().client.get_best_block_hash().unwrap(), best_block_hash);
+	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(1);
-	assert_ne!(get_bitcoind().client.get_best_block_hash().unwrap(), best_block_hash);
+	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();
 
 	// Transaction still confirmed but under new tip.