Merge pull request #1531 from ariard/2022-06-fee-sniping
[rust-lightning] / lightning / src / ln / functional_tests.rs
index c7365452d67e5a7d80fb2661f48bcfb7adefbc67..f99a5af6e22bcbd9d56dcad26611efc43104b83e 100644 (file)
@@ -23,6 +23,7 @@ use ln::channelmanager::{ChannelManager, ChannelManagerReadArgs, PaymentId, RAAC
 use ln::channel::{Channel, ChannelError};
 use ln::{chan_utils, onion_utils};
 use ln::chan_utils::{htlc_success_tx_weight, htlc_timeout_tx_weight, HTLCOutputInCommitment};
+use routing::gossip::NetworkGraph;
 use routing::router::{PaymentParameters, Route, RouteHop, RouteParameters, find_route, get_route};
 use ln::features::{ChannelFeatures, InitFeatures, InvoiceFeatures, NodeFeatures};
 use ln::msgs;
@@ -40,6 +41,8 @@ use bitcoin::blockdata::script::Builder;
 use bitcoin::blockdata::opcodes;
 use bitcoin::blockdata::constants::genesis_block;
 use bitcoin::network::constants::Network;
+use bitcoin::{Transaction, TxIn, TxOut, Witness};
+use bitcoin::OutPoint as BitcoinOutPoint;
 
 use bitcoin::secp256k1::Secp256k1;
 use bitcoin::secp256k1::{PublicKey,SecretKey};
@@ -60,7 +63,7 @@ fn test_insane_channel_opens() {
        // Stand up a network of 2 nodes
        use ln::channel::TOTAL_BITCOIN_SUPPLY_SATOSHIS;
        let mut cfg = UserConfig::default();
-       cfg.peer_channel_config_limits.max_funding_satoshis = TOTAL_BITCOIN_SUPPLY_SATOSHIS + 1;
+       cfg.channel_handshake_limits.max_funding_satoshis = TOTAL_BITCOIN_SUPPLY_SATOSHIS + 1;
        let chanmon_cfgs = create_chanmon_cfgs(2);
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, Some(cfg)]);
@@ -1789,7 +1792,7 @@ fn test_channel_reserve_holding_cell_htlcs() {
        // When this test was written, the default base fee floated based on the HTLC count.
        // It is now fixed, so we simply set the fee to the expected value here.
        let mut config = test_default_channel_config();
-       config.channel_options.forwarding_fee_base_msat = 239;
+       config.channel_config.forwarding_fee_base_msat = 239;
        let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[Some(config.clone()), Some(config.clone()), Some(config.clone())]);
        let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
        let chan_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 190000, 1001, InitFeatures::known(), InitFeatures::known());
@@ -2361,13 +2364,13 @@ fn channel_monitor_network_test() {
 fn test_justice_tx() {
        // Test justice txn built on revoked HTLC-Success tx, against both sides
        let mut alice_config = UserConfig::default();
-       alice_config.channel_options.announced_channel = true;
-       alice_config.peer_channel_config_limits.force_announced_channel_preference = false;
-       alice_config.own_channel_config.our_to_self_delay = 6 * 24 * 5;
+       alice_config.channel_handshake_config.announced_channel = true;
+       alice_config.channel_handshake_limits.force_announced_channel_preference = false;
+       alice_config.channel_handshake_config.our_to_self_delay = 6 * 24 * 5;
        let mut bob_config = UserConfig::default();
-       bob_config.channel_options.announced_channel = true;
-       bob_config.peer_channel_config_limits.force_announced_channel_preference = false;
-       bob_config.own_channel_config.our_to_self_delay = 6 * 24 * 3;
+       bob_config.channel_handshake_config.announced_channel = true;
+       bob_config.channel_handshake_limits.force_announced_channel_preference = false;
+       bob_config.channel_handshake_config.our_to_self_delay = 6 * 24 * 3;
        let user_cfgs = [Some(alice_config), Some(bob_config)];
        let mut chanmon_cfgs = create_chanmon_cfgs(2);
        chanmon_cfgs[0].keys_manager.disable_revocation_policy_check = true;
@@ -5274,7 +5277,7 @@ fn test_duplicate_payment_hash_one_failure_one_success() {
        // When this test was written, the default base fee floated based on the HTLC count.
        // It is now fixed, so we simply set the fee to the expected value here.
        let mut config = test_default_channel_config();
-       config.channel_options.forwarding_fee_base_msat = 196;
+       config.channel_config.forwarding_fee_base_msat = 196;
        let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs,
                &[Some(config.clone()), Some(config.clone()), Some(config.clone()), Some(config.clone())]);
        let mut nodes = create_network(4, &node_cfgs, &node_chanmgrs);
@@ -5486,7 +5489,7 @@ fn do_test_fail_backwards_unrevoked_remote_announce(deliver_last_raa: bool, anno
        // When this test was written, the default base fee floated based on the HTLC count.
        // It is now fixed, so we simply set the fee to the expected value here.
        let mut config = test_default_channel_config();
-       config.channel_options.forwarding_fee_base_msat = 196;
+       config.channel_config.forwarding_fee_base_msat = 196;
        let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs,
                &[Some(config.clone()), Some(config.clone()), Some(config.clone()), Some(config.clone()), Some(config.clone()), Some(config.clone())]);
        let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
@@ -5802,7 +5805,8 @@ fn test_key_derivation_params() {
        let seed = [42; 32];
        let keys_manager = test_utils::TestKeysInterface::new(&seed, Network::Testnet);
        let chain_monitor = test_utils::TestChainMonitor::new(Some(&chanmon_cfgs[0].chain_source), &chanmon_cfgs[0].tx_broadcaster, &chanmon_cfgs[0].logger, &chanmon_cfgs[0].fee_estimator, &chanmon_cfgs[0].persister, &keys_manager);
-       let node = NodeCfg { chain_source: &chanmon_cfgs[0].chain_source, logger: &chanmon_cfgs[0].logger, tx_broadcaster: &chanmon_cfgs[0].tx_broadcaster, fee_estimator: &chanmon_cfgs[0].fee_estimator, chain_monitor, keys_manager: &keys_manager, network_graph: &chanmon_cfgs[0].network_graph, node_seed: seed, features: InitFeatures::known() };
+       let network_graph = NetworkGraph::new(chanmon_cfgs[0].chain_source.genesis_hash, &chanmon_cfgs[0].logger);
+       let node = NodeCfg { chain_source: &chanmon_cfgs[0].chain_source, logger: &chanmon_cfgs[0].logger, tx_broadcaster: &chanmon_cfgs[0].tx_broadcaster, fee_estimator: &chanmon_cfgs[0].fee_estimator, chain_monitor, keys_manager: &keys_manager, network_graph, node_seed: seed, features: InitFeatures::known() };
        let mut node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
        node_cfgs.remove(0);
        node_cfgs.insert(0, node);
@@ -6367,7 +6371,7 @@ fn test_fail_holding_cell_htlc_upon_free_multihop() {
        // When this test was written, the default base fee floated based on the HTLC count.
        // It is now fixed, so we simply set the fee to the expected value here.
        let mut config = test_default_channel_config();
-       config.channel_options.forwarding_fee_base_msat = 196;
+       config.channel_config.forwarding_fee_base_msat = 196;
        let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[Some(config.clone()), Some(config.clone()), Some(config.clone())]);
        let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
        let chan_0_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
@@ -7326,9 +7330,9 @@ fn test_user_configurable_csv_delay() {
        // We test our channel constructors yield errors when we pass them absurd csv delay
 
        let mut low_our_to_self_config = UserConfig::default();
-       low_our_to_self_config.own_channel_config.our_to_self_delay = 6;
+       low_our_to_self_config.channel_handshake_config.our_to_self_delay = 6;
        let mut high_their_to_self_config = UserConfig::default();
-       high_their_to_self_config.peer_channel_config_limits.their_to_self_delay = 100;
+       high_their_to_self_config.channel_handshake_limits.their_to_self_delay = 100;
        let user_cfgs = [Some(high_their_to_self_config.clone()), None];
        let chanmon_cfgs = create_chanmon_cfgs(2);
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
@@ -8243,7 +8247,7 @@ fn test_override_channel_config() {
 
        // Node0 initiates a channel to node1 using the override config.
        let mut override_config = UserConfig::default();
-       override_config.own_channel_config.our_to_self_delay = 200;
+       override_config.channel_handshake_config.our_to_self_delay = 200;
 
        nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 16_000_000, 12_000_000, 42, Some(override_config)).unwrap();
 
@@ -8256,7 +8260,7 @@ fn test_override_channel_config() {
 #[test]
 fn test_override_0msat_htlc_minimum() {
        let mut zero_config = UserConfig::default();
-       zero_config.own_channel_config.our_htlc_minimum_msat = 0;
+       zero_config.channel_handshake_config.our_htlc_minimum_msat = 0;
        let chanmon_cfgs = create_chanmon_cfgs(2);
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, Some(zero_config.clone())]);
@@ -8280,17 +8284,17 @@ fn test_channel_update_has_correct_htlc_maximum_msat() {
        // 2. MUST be set to less than or equal to the `max_htlc_value_in_flight_msat` received from the peer.
 
        let mut config_30_percent = UserConfig::default();
-       config_30_percent.channel_options.announced_channel = true;
-       config_30_percent.own_channel_config.max_inbound_htlc_value_in_flight_percent_of_channel = 30;
+       config_30_percent.channel_handshake_config.announced_channel = true;
+       config_30_percent.channel_handshake_config.max_inbound_htlc_value_in_flight_percent_of_channel = 30;
        let mut config_50_percent = UserConfig::default();
-       config_50_percent.channel_options.announced_channel = true;
-       config_50_percent.own_channel_config.max_inbound_htlc_value_in_flight_percent_of_channel = 50;
+       config_50_percent.channel_handshake_config.announced_channel = true;
+       config_50_percent.channel_handshake_config.max_inbound_htlc_value_in_flight_percent_of_channel = 50;
        let mut config_95_percent = UserConfig::default();
-       config_95_percent.channel_options.announced_channel = true;
-       config_95_percent.own_channel_config.max_inbound_htlc_value_in_flight_percent_of_channel = 95;
+       config_95_percent.channel_handshake_config.announced_channel = true;
+       config_95_percent.channel_handshake_config.max_inbound_htlc_value_in_flight_percent_of_channel = 95;
        let mut config_100_percent = UserConfig::default();
-       config_100_percent.channel_options.announced_channel = true;
-       config_100_percent.own_channel_config.max_inbound_htlc_value_in_flight_percent_of_channel = 100;
+       config_100_percent.channel_handshake_config.announced_channel = true;
+       config_100_percent.channel_handshake_config.max_inbound_htlc_value_in_flight_percent_of_channel = 100;
 
        let chanmon_cfgs = create_chanmon_cfgs(4);
        let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
@@ -9725,7 +9729,7 @@ fn do_test_dup_htlc_second_rejected(test_for_second_fail_panic: bool) {
                nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &fail_updates_1.update_fail_htlcs[0]);
                commitment_signed_dance!(nodes[0], nodes[1], fail_updates_1.commitment_signed, false);
 
-               expect_payment_failed_conditions!(nodes[0], our_payment_hash, true, PaymentFailedConditions::new().mpp_parts_remain());
+               expect_payment_failed_conditions(&nodes[0], our_payment_hash, true, PaymentFailedConditions::new().mpp_parts_remain());
 
                claim_payment(&nodes[0], &[&nodes[1]], our_payment_preimage);
        }
@@ -9830,7 +9834,7 @@ fn test_inconsistent_mpp_params() {
        nodes[0].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &fail_updates_2.update_fail_htlcs[0]);
        commitment_signed_dance!(nodes[0], nodes[2], fail_updates_2.commitment_signed, false);
 
-       expect_payment_failed_conditions!(nodes[0], our_payment_hash, true, PaymentFailedConditions::new().mpp_parts_remain());
+       expect_payment_failed_conditions(&nodes[0], our_payment_hash, true, PaymentFailedConditions::new().mpp_parts_remain());
 
        nodes[0].node.send_payment_along_path(&route.paths[1], &payment_params_opt, &our_payment_hash, &Some(our_payment_secret), 15_000_000, cur_height, payment_id, &None).unwrap();
        check_added_monitors!(nodes[0], 1);
@@ -9860,7 +9864,7 @@ fn test_keysend_payments_to_public_node() {
        };
        let scorer = test_utils::TestScorer::with_penalty(0);
        let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes();
-       let route = find_route(&payer_pubkey, &route_params, network_graph, None, nodes[0].logger, &scorer, &random_seed_bytes).unwrap();
+       let route = find_route(&payer_pubkey, &route_params, &network_graph.read_only(), None, nodes[0].logger, &scorer, &random_seed_bytes).unwrap();
 
        let test_preimage = PaymentPreimage([42; 32]);
        let (payment_hash, _) = nodes[0].node.send_spontaneous_payment(&route, Some(test_preimage)).unwrap();
@@ -9896,8 +9900,8 @@ fn test_keysend_payments_to_private_node() {
        let scorer = test_utils::TestScorer::with_penalty(0);
        let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes();
        let route = find_route(
-               &payer_pubkey, &route_params, network_graph, Some(&first_hops.iter().collect::<Vec<_>>()),
-               nodes[0].logger, &scorer, &random_seed_bytes
+               &payer_pubkey, &route_params, &network_graph.read_only(),
+               Some(&first_hops.iter().collect::<Vec<_>>()), nodes[0].logger, &scorer, &random_seed_bytes
        ).unwrap();
 
        let test_preimage = PaymentPreimage([42; 32]);
@@ -10180,7 +10184,7 @@ fn do_test_max_dust_htlc_exposure(dust_outbound_balance: bool, exposure_breach_e
 
        let chanmon_cfgs = create_chanmon_cfgs(2);
        let mut config = test_default_channel_config();
-       config.channel_options.max_dust_htlc_exposure_msat = 5_000_000; // default setting value
+       config.channel_config.max_dust_htlc_exposure_msat = 5_000_000; // default setting value
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[Some(config), None]);
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
@@ -10223,13 +10227,13 @@ fn do_test_max_dust_htlc_exposure(dust_outbound_balance: bool, exposure_breach_e
                chan.get_dust_buffer_feerate(None) as u64
        };
        let dust_outbound_htlc_on_holder_tx_msat: u64 = (dust_buffer_feerate * htlc_timeout_tx_weight(opt_anchors) / 1000 + open_channel.dust_limit_satoshis - 1) * 1000;
-       let dust_outbound_htlc_on_holder_tx: u64 = config.channel_options.max_dust_htlc_exposure_msat / dust_outbound_htlc_on_holder_tx_msat;
+       let dust_outbound_htlc_on_holder_tx: u64 = config.channel_config.max_dust_htlc_exposure_msat / dust_outbound_htlc_on_holder_tx_msat;
 
        let dust_inbound_htlc_on_holder_tx_msat: u64 = (dust_buffer_feerate * htlc_success_tx_weight(opt_anchors) / 1000 + open_channel.dust_limit_satoshis - 1) * 1000;
-       let dust_inbound_htlc_on_holder_tx: u64 = config.channel_options.max_dust_htlc_exposure_msat / dust_inbound_htlc_on_holder_tx_msat;
+       let dust_inbound_htlc_on_holder_tx: u64 = config.channel_config.max_dust_htlc_exposure_msat / dust_inbound_htlc_on_holder_tx_msat;
 
        let dust_htlc_on_counterparty_tx: u64 = 25;
-       let dust_htlc_on_counterparty_tx_msat: u64 = config.channel_options.max_dust_htlc_exposure_msat / dust_htlc_on_counterparty_tx;
+       let dust_htlc_on_counterparty_tx_msat: u64 = config.channel_config.max_dust_htlc_exposure_msat / dust_htlc_on_counterparty_tx;
 
        if on_holder_tx {
                if dust_outbound_balance {
@@ -10273,9 +10277,9 @@ fn do_test_max_dust_htlc_exposure(dust_outbound_balance: bool, exposure_breach_e
                if on_holder_tx {
                        let dust_outbound_overflow = dust_outbound_htlc_on_holder_tx_msat * (dust_outbound_htlc_on_holder_tx + 1);
                        let dust_inbound_overflow = dust_inbound_htlc_on_holder_tx_msat * dust_inbound_htlc_on_holder_tx + dust_outbound_htlc_on_holder_tx_msat;
-                       unwrap_send_err!(nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)), true, APIError::ChannelUnavailable { ref err }, assert_eq!(err, &format!("Cannot send value that would put our exposure to dust HTLCs at {} over the limit {} on holder commitment tx", if dust_outbound_balance { dust_outbound_overflow } else { dust_inbound_overflow }, config.channel_options.max_dust_htlc_exposure_msat)));
+                       unwrap_send_err!(nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)), true, APIError::ChannelUnavailable { ref err }, assert_eq!(err, &format!("Cannot send value that would put our exposure to dust HTLCs at {} over the limit {} on holder commitment tx", if dust_outbound_balance { dust_outbound_overflow } else { dust_inbound_overflow }, config.channel_config.max_dust_htlc_exposure_msat)));
                } else {
-                       unwrap_send_err!(nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)), true, APIError::ChannelUnavailable { ref err }, assert_eq!(err, &format!("Cannot send value that would put our exposure to dust HTLCs at {} over the limit {} on counterparty commitment tx", dust_overflow, config.channel_options.max_dust_htlc_exposure_msat)));
+                       unwrap_send_err!(nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)), true, APIError::ChannelUnavailable { ref err }, assert_eq!(err, &format!("Cannot send value that would put our exposure to dust HTLCs at {} over the limit {} on counterparty commitment tx", dust_overflow, config.channel_config.max_dust_htlc_exposure_msat)));
                }
        } else if exposure_breach_event == ExposureEvent::AtHTLCReception {
                let (route, payment_hash, _, payment_secret) = get_route_and_payment_hash!(nodes[1], nodes[0], if on_holder_tx { dust_inbound_htlc_on_holder_tx_msat } else { dust_htlc_on_counterparty_tx_msat });
@@ -10290,10 +10294,10 @@ fn do_test_max_dust_htlc_exposure(dust_outbound_balance: bool, exposure_breach_e
                        // Outbound dust balance: 6399 sats
                        let dust_inbound_overflow = dust_inbound_htlc_on_holder_tx_msat * (dust_inbound_htlc_on_holder_tx + 1);
                        let dust_outbound_overflow = dust_outbound_htlc_on_holder_tx_msat * dust_outbound_htlc_on_holder_tx + dust_inbound_htlc_on_holder_tx_msat;
-                       nodes[0].logger.assert_log("lightning::ln::channel".to_string(), format!("Cannot accept value that would put our exposure to dust HTLCs at {} over the limit {} on holder commitment tx", if dust_outbound_balance { dust_outbound_overflow } else { dust_inbound_overflow }, config.channel_options.max_dust_htlc_exposure_msat), 1);
+                       nodes[0].logger.assert_log("lightning::ln::channel".to_string(), format!("Cannot accept value that would put our exposure to dust HTLCs at {} over the limit {} on holder commitment tx", if dust_outbound_balance { dust_outbound_overflow } else { dust_inbound_overflow }, config.channel_config.max_dust_htlc_exposure_msat), 1);
                } else {
                        // Outbound dust balance: 5200 sats
-                       nodes[0].logger.assert_log("lightning::ln::channel".to_string(), format!("Cannot accept value that would put our exposure to dust HTLCs at {} over the limit {} on counterparty commitment tx", dust_overflow, config.channel_options.max_dust_htlc_exposure_msat), 1);
+                       nodes[0].logger.assert_log("lightning::ln::channel".to_string(), format!("Cannot accept value that would put our exposure to dust HTLCs at {} over the limit {} on counterparty commitment tx", dust_overflow, config.channel_config.max_dust_htlc_exposure_msat), 1);
                }
        } else if exposure_breach_event == ExposureEvent::AtUpdateFeeOutbound {
                let (route, payment_hash, _, payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 2_500_000);
@@ -10327,3 +10331,45 @@ fn test_max_dust_htlc_exposure() {
        do_test_max_dust_htlc_exposure(false, ExposureEvent::AtUpdateFeeOutbound, false);
        do_test_max_dust_htlc_exposure(false, ExposureEvent::AtUpdateFeeOutbound, true);
 }
+
+#[test]
+fn test_non_final_funding_tx() {
+       let chanmon_cfgs = create_chanmon_cfgs(2);
+       let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
+       let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
+       let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+
+       let temp_channel_id = nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100_000, 0, 42, None).unwrap();
+       let open_channel_message = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_channel_message);
+       let accept_channel_message = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
+       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &accept_channel_message);
+
+       let best_height = nodes[0].node.best_block.read().unwrap().height();
+
+       let chan_id = *nodes[0].network_chan_count.borrow();
+       let events = nodes[0].node.get_and_clear_pending_events();
+       let input = TxIn { previous_output: BitcoinOutPoint::null(), script_sig: bitcoin::Script::new(), sequence: 0x1, witness: Witness::from_vec(vec!(vec!(1))) };
+       assert_eq!(events.len(), 1);
+       let mut tx = match events[0] {
+               Event::FundingGenerationReady { ref channel_value_satoshis, ref output_script, .. } => {
+                       // Timelock the transaction _beyond_ the best client height + 2.
+                       Transaction { version: chan_id as i32, lock_time: best_height + 3, input: vec![input], output: vec![TxOut {
+                               value: *channel_value_satoshis, script_pubkey: output_script.clone(),
+                       }]}
+               },
+               _ => panic!("Unexpected event"),
+       };
+       // Transaction should fail as it's evaluated as non-final for propagation.
+       match nodes[0].node.funding_transaction_generated(&temp_channel_id, &nodes[1].node.get_our_node_id(), tx.clone()) {
+               Err(APIError::APIMisuseError { err }) => {
+                       assert_eq!(format!("Funding transaction absolute timelock is non-final"), err);
+               },
+               _ => panic!()
+       }
+
+       // However, transaction should be accepted if it's in a +2 headroom from best block.
+       tx.lock_time -= 1;
+       assert!(nodes[0].node.funding_transaction_generated(&temp_channel_id, &nodes[1].node.get_our_node_id(), tx.clone()).is_ok());
+       get_event_msg!(nodes[0], MessageSendEvent::SendFundingCreated, nodes[1].node.get_our_node_id());
+}