From 0ed3a79186d7efd1ba0f72be20c37f3227abb9b6 Mon Sep 17 00:00:00 2001
From: Lucas Saldanha <lucascrsaldanha@gmail.com>
Date: Mon, 22 Jul 2024 16:16:01 +1200
Subject: [PATCH] Remove randomness from mock execution payload header builder

---
 .../datastructures/interop/GenesisStateBuilder.java  | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/ethereum/spec/src/main/java/tech/pegasys/teku/spec/datastructures/interop/GenesisStateBuilder.java b/ethereum/spec/src/main/java/tech/pegasys/teku/spec/datastructures/interop/GenesisStateBuilder.java
index 6607ebe035a..27c32dfa87f 100644
--- a/ethereum/spec/src/main/java/tech/pegasys/teku/spec/datastructures/interop/GenesisStateBuilder.java
+++ b/ethereum/spec/src/main/java/tech/pegasys/teku/spec/datastructures/interop/GenesisStateBuilder.java
@@ -146,19 +146,19 @@ private ExecutionPayloadHeader mockExecutionPayloadHeader() {
         .getExecutionPayloadHeaderSchema()
         .createExecutionPayloadHeader(
             b -> {
-              b.blockHash(Bytes32.random());
+              b.blockHash(generateMockGenesisBlockHash());
               b.parentHash(Bytes32.ZERO);
               b.feeRecipient(Bytes20.ZERO);
               b.stateRoot(Bytes32.ZERO);
               b.receiptsRoot(Bytes32.ZERO);
-              b.logsBloom(Bytes.random(256));
-              b.prevRandao(Bytes32.random());
+              b.logsBloom(Bytes.repeat((byte) 0x00, 256));
+              b.prevRandao(Bytes32.ZERO);
               b.blockNumber(UInt64.ZERO);
-              b.gasLimit(UInt64.ONE);
+              b.gasLimit(UInt64.ZERO);
               b.gasUsed(UInt64.ZERO);
               b.timestamp(UInt64.ZERO);
-              b.extraData(Bytes.random(20));
-              b.baseFeePerGas(UInt256.ONE);
+              b.extraData(Bytes.repeat((byte) 0x00, 20));
+              b.baseFeePerGas(UInt256.ZERO);
               b.transactionsRoot(Bytes32.ZERO);
               // Capella
               b.withdrawalsRoot(() -> Bytes32.ZERO);