From f207781d2676bb09f7733752510e46ca12e7a1bb Mon Sep 17 00:00:00 2001
From: parazyd <parazyd@dyne.org>
Date: Wed, 19 Jul 2023 15:42:06 +0200
Subject: [PATCH] contract/test-harness: Use deterministic genesis coin and
 keypairs.

---
 .../src/consensus_genesis_stake.rs            | 11 +++++++--
 src/contract/test-harness/src/lib.rs          | 23 ++++++++++++-------
 2 files changed, 24 insertions(+), 10 deletions(-)

diff --git a/src/contract/test-harness/src/consensus_genesis_stake.rs b/src/contract/test-harness/src/consensus_genesis_stake.rs
index ce0f8c321..bd73a16db 100644
--- a/src/contract/test-harness/src/consensus_genesis_stake.rs
+++ b/src/contract/test-harness/src/consensus_genesis_stake.rs
@@ -18,7 +18,7 @@
 
 use std::time::Instant;
 
-use darkfi::{tx::Transaction, Result};
+use darkfi::{tx::Transaction, zk::halo2::Field, Result};
 use darkfi_consensus_contract::{
     client::genesis_stake_v1::ConsensusGenesisStakeCallBuilder,
     model::ConsensusGenesisStakeParamsV1, ConsensusFunction,
@@ -26,6 +26,7 @@ use darkfi_consensus_contract::{
 use darkfi_money_contract::CONSENSUS_CONTRACT_ZKAS_MINT_NS_V1;
 use darkfi_sdk::{
     crypto::{MerkleNode, CONSENSUS_CONTRACT_ID},
+    pasta::pallas,
     ContractCall,
 };
 use darkfi_serial::{serialize, Encodable};
@@ -54,7 +55,13 @@ impl TestHarness {
             mint_zkbin: mint_zkbin.clone(),
             mint_pk: mint_pk.clone(),
         }
-        .build()?;
+        .build_with_params(
+            pallas::Scalar::random(&mut OsRng),
+            pallas::Scalar::random(&mut OsRng),
+            pallas::Scalar::random(&mut OsRng),
+            pallas::Base::from(28),
+        )?;
+
         let (genesis_stake_params, genesis_stake_proofs) =
             (genesis_stake_call_debris.params, genesis_stake_call_debris.proofs);
 
diff --git a/src/contract/test-harness/src/lib.rs b/src/contract/test-harness/src/lib.rs
index 870ecfdf9..a9f7dd1e8 100644
--- a/src/contract/test-harness/src/lib.rs
+++ b/src/contract/test-harness/src/lib.rs
@@ -21,7 +21,10 @@ use std::collections::HashMap;
 use darkfi::{
     blockchain::BlockInfo,
     runtime::vm_runtime::SMART_CONTRACT_ZKAS_DB_NAME,
-    util::time::TimeKeeper,
+    util::{
+        pcg::Pcg32,
+        time::{TimeKeeper, Timestamp},
+    },
     validator::{Validator, ValidatorConfig, ValidatorPtr},
     wallet::{WalletDb, WalletPtr},
     zk::{empty_witnesses, ProvingKey, ZkCircuit},
@@ -209,30 +212,34 @@ pub struct TestHarness {
 impl TestHarness {
     pub async fn new(contracts: &[String]) -> Result<Self> {
         let mut holders = HashMap::new();
-        let genesis_block = BlockInfo::default();
+        let mut genesis_block = BlockInfo::default();
+        genesis_block.header.timestamp = Timestamp(1689772567);
 
-        let faucet_kp = Keypair::random(&mut OsRng);
+        // Deterministic PRNG
+        let mut rng = Pcg32::new(42);
+
+        let faucet_kp = Keypair::random(&mut rng);
         let faucet_pubkeys = vec![faucet_kp.public];
         let faucet = Wallet::new(faucet_kp, &genesis_block, &faucet_pubkeys).await?;
         holders.insert(Holder::Faucet, faucet);
 
-        let alice_kp = Keypair::random(&mut OsRng);
+        let alice_kp = Keypair::random(&mut rng);
         let alice = Wallet::new(alice_kp, &genesis_block, &faucet_pubkeys).await?;
         // Alice is inserted at end of function
 
-        let bob_kp = Keypair::random(&mut OsRng);
+        let bob_kp = Keypair::random(&mut rng);
         let bob = Wallet::new(bob_kp, &genesis_block, &faucet_pubkeys).await?;
         holders.insert(Holder::Bob, bob);
 
-        let charlie_kp = Keypair::random(&mut OsRng);
+        let charlie_kp = Keypair::random(&mut rng);
         let charlie = Wallet::new(charlie_kp, &genesis_block, &faucet_pubkeys).await?;
         holders.insert(Holder::Charlie, charlie);
 
-        let rachel_kp = Keypair::random(&mut OsRng);
+        let rachel_kp = Keypair::random(&mut rng);
         let rachel = Wallet::new(rachel_kp, &genesis_block, &faucet_pubkeys).await?;
         holders.insert(Holder::Rachel, rachel);
 
-        let dao_kp = Keypair::random(&mut OsRng);
+        let dao_kp = Keypair::random(&mut rng);
         let dao = Wallet::new(dao_kp, &genesis_block, &faucet_pubkeys).await?;
         holders.insert(Holder::Dao, dao);