Make test output deterministic

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

diff --git a/lightning/src/ln/channelmonitor.rs b/lightning/src/ln/channelmonitor.rs
index 0b8f8c07862eeb8514bbea78e254059fc1b73a72..d8689faeb60460988c69ad267d50cd52bcb6a4a2 100644 (file)
--- a/lightning/src/ln/channelmonitor.rs
+++ b/lightning/src/ln/channelmonitor.rs
@@ -2544,7 +2544,6 @@ mod tests {
        use util::test_utils::TestLogger;
        use bitcoin::secp256k1::key::{SecretKey,PublicKey};
        use bitcoin::secp256k1::Secp256k1;
-       use rand::{thread_rng,Rng};
        use std::sync::Arc;
        use chain::keysinterface::InMemoryChannelKeys;
 
@@ -2558,10 +2557,8 @@ mod tests {
 
                let mut preimages = Vec::new();
                {
-                       let mut rng  = thread_rng();
-                       for _ in 0..20 {
-                               let mut preimage = PaymentPreimage([0; 32]);
-                               rng.fill_bytes(&mut preimage.0[..]);
+                       for i in 0..20 {
+                               let preimage = PaymentPreimage([i; 32]);
                                let hash = PaymentHash(Sha256::hash(&preimage.0[..]).into_inner());
                                preimages.push((preimage, hash));
                        }