Make test output deterministic

[rust-lightning] / lightning / src / ln / functional_test_utils.rs

diff --git a/lightning/src/ln/functional_test_utils.rs b/lightning/src/ln/functional_test_utils.rs
index bed83a925cb3e893df9b507b3906c6b608614454..547e58bc287ccbbc6d2fab745706eaa80fcca0e5 100644 (file)
--- a/lightning/src/ln/functional_test_utils.rs
+++ b/lightning/src/ln/functional_test_utils.rs
@@ -29,8 +29,6 @@ use bitcoin::hash_types::BlockHash;
 
 use bitcoin::secp256k1::key::PublicKey;
 
-use rand::{thread_rng,Rng};
-
 use std::cell::RefCell;
 use std::rc::Rc;
 use std::sync::{Mutex, RwLock};
@@ -1071,11 +1069,9 @@ pub fn create_chanmon_cfgs(node_count: usize) -> Vec<TestChanMonCfg> {
 
 pub fn create_node_cfgs<'a>(node_count: usize, chanmon_cfgs: &'a Vec<TestChanMonCfg>) -> Vec<NodeCfg<'a>> {
        let mut nodes = Vec::new();
-       let mut rng = thread_rng();
 
        for i in 0..node_count {
-               let mut seed = [0; 32];
-               rng.fill_bytes(&mut seed);
+               let seed = [i as u8; 32];
                let keys_manager = test_utils::TestKeysInterface::new(&seed, Network::Testnet);
                let chan_monitor = test_utils::TestChannelMonitor::new(&chanmon_cfgs[i].chain_monitor, &chanmon_cfgs[i].tx_broadcaster, &chanmon_cfgs[i].logger, &chanmon_cfgs[i].fee_estimator);
                nodes.push(NodeCfg { chain_monitor: &chanmon_cfgs[i].chain_monitor, logger: &chanmon_cfgs[i].logger, tx_broadcaster: &chanmon_cfgs[i].tx_broadcaster, fee_estimator: &chanmon_cfgs[i].fee_estimator, chan_monitor, keys_manager, node_seed: seed });