Actual no_std support
[rust-lightning] / lightning / src / util / test_utils.rs
index b96169aadb8023244ba27188e2c955436da8f84b..a9a10451b2c1dd0825a2f985e13075c45b759961 100644 (file)
@@ -8,6 +8,7 @@
 // licenses.
 
 use chain;
+use chain::WatchedOutput;
 use chain::chaininterface;
 use chain::chaininterface::ConfirmationTarget;
 use chain::chainmonitor;
@@ -27,23 +28,26 @@ use bitcoin::blockdata::constants::genesis_block;
 use bitcoin::blockdata::transaction::{Transaction, TxOut};
 use bitcoin::blockdata::script::{Builder, Script};
 use bitcoin::blockdata::opcodes;
+use bitcoin::blockdata::block::BlockHeader;
 use bitcoin::network::constants::Network;
 use bitcoin::hash_types::{BlockHash, Txid};
 
 use bitcoin::secp256k1::{SecretKey, PublicKey, Secp256k1, Signature};
+use bitcoin::secp256k1::recovery::RecoverableSignature;
 
 use regex;
 
-use std::time::Duration;
-use std::sync::{Mutex, Arc};
-use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
-use std::{cmp, mem};
-use std::collections::{HashMap, HashSet};
+use io;
+use prelude::*;
+use core::time::Duration;
+use sync::{Mutex, Arc};
+use core::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
+use core::{cmp, mem};
 use chain::keysinterface::InMemorySigner;
 
 pub struct TestVecWriter(pub Vec<u8>);
 impl Writer for TestVecWriter {
-       fn write_all(&mut self, buf: &[u8]) -> Result<(), ::std::io::Error> {
+       fn write_all(&mut self, buf: &[u8]) -> Result<(), io::Error> {
                self.0.extend_from_slice(buf);
                Ok(())
        }
@@ -53,11 +57,11 @@ impl Writer for TestVecWriter {
 }
 
 pub struct TestFeeEstimator {
-       pub sat_per_kw: u32,
+       pub sat_per_kw: Mutex<u32>,
 }
 impl chaininterface::FeeEstimator for TestFeeEstimator {
        fn get_est_sat_per_1000_weight(&self, _confirmation_target: ConfirmationTarget) -> u32 {
-               self.sat_per_kw
+               *self.sat_per_kw.lock().unwrap()
        }
 }
 
@@ -72,8 +76,9 @@ impl keysinterface::KeysInterface for OnlyReadsKeysInterface {
        fn get_secure_random_bytes(&self) -> [u8; 32] { [0; 32] }
 
        fn read_chan_signer(&self, reader: &[u8]) -> Result<Self::Signer, msgs::DecodeError> {
-               EnforcingSigner::read(&mut std::io::Cursor::new(reader))
+               EnforcingSigner::read(&mut io::Cursor::new(reader))
        }
+       fn sign_invoice(&self, _invoice_preimage: Vec<u8>) -> Result<RecoverableSignature, ()> { unreachable!(); }
 }
 
 pub struct TestChainMonitor<'a> {
@@ -109,8 +114,8 @@ impl<'a> chain::Watch<EnforcingSigner> for TestChainMonitor<'a> {
                // to a watchtower and disk...
                let mut w = TestVecWriter(Vec::new());
                monitor.write(&mut w).unwrap();
-               let new_monitor = <(Option<BlockHash>, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
-                       &mut ::std::io::Cursor::new(&w.0), self.keys_manager).unwrap().1;
+               let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
+                       &mut io::Cursor::new(&w.0), self.keys_manager).unwrap().1;
                assert!(new_monitor == monitor);
                self.latest_monitor_update_id.lock().unwrap().insert(funding_txo.to_channel_id(), (funding_txo, monitor.get_latest_update_id()));
                self.added_monitors.lock().unwrap().push((funding_txo, monitor));
@@ -132,7 +137,7 @@ impl<'a> chain::Watch<EnforcingSigner> for TestChainMonitor<'a> {
                let mut w = TestVecWriter(Vec::new());
                update.write(&mut w).unwrap();
                assert!(channelmonitor::ChannelMonitorUpdate::read(
-                               &mut ::std::io::Cursor::new(&w.0)).unwrap() == update);
+                               &mut io::Cursor::new(&w.0)).unwrap() == update);
 
                if let Some(exp) = self.expect_channel_force_closed.lock().unwrap().take() {
                        assert_eq!(funding_txo.to_channel_id(), exp.0);
@@ -150,8 +155,8 @@ impl<'a> chain::Watch<EnforcingSigner> for TestChainMonitor<'a> {
                let monitor = monitors.get(&funding_txo).unwrap();
                w.0.clear();
                monitor.write(&mut w).unwrap();
-               let new_monitor = <(Option<BlockHash>, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
-                       &mut ::std::io::Cursor::new(&w.0), self.keys_manager).unwrap().1;
+               let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
+                       &mut io::Cursor::new(&w.0), self.keys_manager).unwrap().1;
                assert!(new_monitor == *monitor);
                self.added_monitors.lock().unwrap().push((funding_txo, new_monitor));
 
@@ -185,21 +190,30 @@ impl TestPersister {
                *self.update_ret.lock().unwrap() = ret;
        }
 }
-impl channelmonitor::Persist<EnforcingSigner> for TestPersister {
-       fn persist_new_channel(&self, _funding_txo: OutPoint, _data: &channelmonitor::ChannelMonitor<EnforcingSigner>) -> Result<(), channelmonitor::ChannelMonitorUpdateErr> {
+impl<Signer: keysinterface::Sign> channelmonitor::Persist<Signer> for TestPersister {
+       fn persist_new_channel(&self, _funding_txo: OutPoint, _data: &channelmonitor::ChannelMonitor<Signer>) -> Result<(), channelmonitor::ChannelMonitorUpdateErr> {
                self.update_ret.lock().unwrap().clone()
        }
 
-       fn update_persisted_channel(&self, _funding_txo: OutPoint, _update: &channelmonitor::ChannelMonitorUpdate, _data: &channelmonitor::ChannelMonitor<EnforcingSigner>) -> Result<(), channelmonitor::ChannelMonitorUpdateErr> {
+       fn update_persisted_channel(&self, _funding_txo: OutPoint, _update: &channelmonitor::ChannelMonitorUpdate, _data: &channelmonitor::ChannelMonitor<Signer>) -> Result<(), channelmonitor::ChannelMonitorUpdateErr> {
                self.update_ret.lock().unwrap().clone()
        }
 }
 
 pub struct TestBroadcaster {
        pub txn_broadcasted: Mutex<Vec<Transaction>>,
+       pub blocks: Arc<Mutex<Vec<(BlockHeader, u32)>>>,
 }
 impl chaininterface::BroadcasterInterface for TestBroadcaster {
        fn broadcast_transaction(&self, tx: &Transaction) {
+               assert!(tx.lock_time < 1_500_000_000);
+               if tx.lock_time > self.blocks.lock().unwrap().len() as u32 + 1 && tx.lock_time < 500_000_000 {
+                       for inp in tx.input.iter() {
+                               if inp.sequence != 0xffffffff {
+                                       panic!("We should never broadcast a transaction before its locktime ({})!", tx.lock_time);
+                               }
+                       }
+               }
                self.txn_broadcasted.lock().unwrap().push(tx.clone());
        }
 }
@@ -231,6 +245,7 @@ impl msgs::ChannelMessageHandler for TestChannelMessageHandler {
        fn handle_commitment_signed(&self, _their_node_id: &PublicKey, _msg: &msgs::CommitmentSigned) {}
        fn handle_revoke_and_ack(&self, _their_node_id: &PublicKey, _msg: &msgs::RevokeAndACK) {}
        fn handle_update_fee(&self, _their_node_id: &PublicKey, _msg: &msgs::UpdateFee) {}
+       fn handle_channel_update(&self, _their_node_id: &PublicKey, _msg: &msgs::ChannelUpdate) {}
        fn handle_announcement_signatures(&self, _their_node_id: &PublicKey, _msg: &msgs::AnnouncementSignatures) {}
        fn handle_channel_reestablish(&self, _their_node_id: &PublicKey, _msg: &msgs::ChannelReestablish) {}
        fn peer_disconnected(&self, _their_node_id: &PublicKey, _no_connection_possible: bool) {}
@@ -425,7 +440,7 @@ impl TestLogger {
 impl Logger for TestLogger {
        fn log(&self, record: &Record) {
                *self.lines.lock().unwrap().entry((record.module_path.to_string(), format!("{}", record.args))).or_insert(0) += 1;
-               if self.level >= record.level {
+               if record.level >= self.level {
                        println!("{:<5} {} [{} : {}, {}] {}", record.level.to_string(), self.id, record.module_path, record.file, record.line, record.args);
                }
        }
@@ -467,7 +482,7 @@ impl keysinterface::KeysInterface for TestKeysInterface {
        }
 
        fn read_chan_signer(&self, buffer: &[u8]) -> Result<Self::Signer, msgs::DecodeError> {
-               let mut reader = std::io::Cursor::new(buffer);
+               let mut reader = io::Cursor::new(buffer);
 
                let inner: InMemorySigner = Readable::read(&mut reader)?;
                let revoked_commitment = self.make_revoked_commitment_cell(inner.commitment_seed);
@@ -481,6 +496,10 @@ impl keysinterface::KeysInterface for TestKeysInterface {
                        disable_revocation_policy_check: self.disable_revocation_policy_check,
                })
        }
+
+       fn sign_invoice(&self, invoice_preimage: Vec<u8>) -> Result<RecoverableSignature, ()> {
+               self.backing.sign_invoice(invoice_preimage)
+       }
 }
 
 
@@ -516,6 +535,7 @@ pub struct TestChainSource {
        pub utxo_ret: Mutex<Result<TxOut, chain::AccessError>>,
        pub watched_txn: Mutex<HashSet<(Txid, Script)>>,
        pub watched_outputs: Mutex<HashSet<(OutPoint, Script)>>,
+       expectations: Mutex<Option<VecDeque<OnRegisterOutput>>>,
 }
 
 impl TestChainSource {
@@ -526,8 +546,17 @@ impl TestChainSource {
                        utxo_ret: Mutex::new(Ok(TxOut { value: u64::max_value(), script_pubkey })),
                        watched_txn: Mutex::new(HashSet::new()),
                        watched_outputs: Mutex::new(HashSet::new()),
+                       expectations: Mutex::new(None),
                }
        }
+
+       /// Sets an expectation that [`chain::Filter::register_output`] is called.
+       pub fn expect(&self, expectation: OnRegisterOutput) -> &Self {
+               self.expectations.lock().unwrap()
+                       .get_or_insert_with(|| VecDeque::new())
+                       .push_back(expectation);
+               self
+       }
 }
 
 impl chain::Access for TestChainSource {
@@ -545,7 +574,72 @@ impl chain::Filter for TestChainSource {
                self.watched_txn.lock().unwrap().insert((*txid, script_pubkey.clone()));
        }
 
-       fn register_output(&self, outpoint: &OutPoint, script_pubkey: &Script) {
-               self.watched_outputs.lock().unwrap().insert((*outpoint, script_pubkey.clone()));
+       fn register_output(&self, output: WatchedOutput) -> Option<(usize, Transaction)> {
+               let dependent_tx = match &mut *self.expectations.lock().unwrap() {
+                       None => None,
+                       Some(expectations) => match expectations.pop_front() {
+                               None => {
+                                       panic!("Unexpected register_output: {:?}",
+                                               (output.outpoint, output.script_pubkey));
+                               },
+                               Some(expectation) => {
+                                       assert_eq!(output.outpoint, expectation.outpoint());
+                                       assert_eq!(&output.script_pubkey, expectation.script_pubkey());
+                                       expectation.returns
+                               },
+                       },
+               };
+
+               self.watched_outputs.lock().unwrap().insert((output.outpoint, output.script_pubkey));
+               dependent_tx
+       }
+}
+
+impl Drop for TestChainSource {
+       fn drop(&mut self) {
+               if std::thread::panicking() {
+                       return;
+               }
+
+               if let Some(expectations) = &*self.expectations.lock().unwrap() {
+                       if !expectations.is_empty() {
+                               panic!("Unsatisfied expectations: {:?}", expectations);
+                       }
+               }
+       }
+}
+
+/// An expectation that [`chain::Filter::register_output`] was called with a transaction output and
+/// returns an optional dependent transaction that spends the output in the same block.
+pub struct OnRegisterOutput {
+       /// The transaction output to register.
+       pub with: TxOutReference,
+
+       /// A dependent transaction spending the output along with its position in the block.
+       pub returns: Option<(usize, Transaction)>,
+}
+
+/// A transaction output as identified by an index into a transaction's output list.
+pub struct TxOutReference(pub Transaction, pub usize);
+
+impl OnRegisterOutput {
+       fn outpoint(&self) -> OutPoint {
+               let txid = self.with.0.txid();
+               let index = self.with.1 as u16;
+               OutPoint { txid, index }
+       }
+
+       fn script_pubkey(&self) -> &Script {
+               let index = self.with.1;
+               &self.with.0.output[index].script_pubkey
+       }
+}
+
+impl core::fmt::Debug for OnRegisterOutput {
+       fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+               f.debug_struct("OnRegisterOutput")
+                       .field("outpoint", &self.outpoint())
+                       .field("script_pubkey", self.script_pubkey())
+                       .finish()
        }
 }