From ae17107f7839312065fbcc96a1065ff86cf0cb4b Mon Sep 17 00:00:00 2001
From: Daniel Knopik <daniel@dknopik.de>
Date: Thu, 30 Apr 2026 09:16:58 +0200
Subject: [PATCH] fix test runs

---
 .../beacon_chain/src/data_availability_checker.rs   |  5 +----
 .../network/src/sync/block_sidecar_coupling.rs      | 13 +++++++++----
 2 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/beacon_node/beacon_chain/src/data_availability_checker.rs b/beacon_node/beacon_chain/src/data_availability_checker.rs
index ef5544930e..928d7a1bad 100644
--- a/beacon_node/beacon_chain/src/data_availability_checker.rs
+++ b/beacon_node/beacon_chain/src/data_availability_checker.rs
@@ -878,10 +878,7 @@ impl<E: EthSpec> AvailableBlock<E> {
         match &block_data {
             AvailableBlockData::NoData => {
                 // For Gloas, DA is checked for the PayloadEnvelope, not for the block.
-                if block.fork_name(&spec).map_err(|_| {
-                    AvailabilityCheckError::Unexpected("Unexpected fork mismatch".to_string())
-                })? < ForkName::Gloas
-                {
+                if block.fork_name_unchecked() < ForkName::Gloas {
                     if columns_required {
                         return Err(AvailabilityCheckError::MissingCustodyColumns);
                     } else if blobs_required {
diff --git a/beacon_node/network/src/sync/block_sidecar_coupling.rs b/beacon_node/network/src/sync/block_sidecar_coupling.rs
index 98cf3e0a1f..6d96967fd0 100644
--- a/beacon_node/network/src/sync/block_sidecar_coupling.rs
+++ b/beacon_node/network/src/sync/block_sidecar_coupling.rs
@@ -549,12 +549,18 @@ mod tests {
 
     #[test]
     fn no_blobs_into_responses() {
+        let spec = Arc::new(test_spec::<E>());
+
         let mut rng = XorShiftRng::from_seed([42; 16]);
         let blocks = (0..4)
             .map(|_| {
-                generate_rand_block_and_blobs::<E>(ForkName::Base, NumBlobs::None, &mut rng)
-                    .0
-                    .into()
+                generate_rand_block_and_blobs::<E>(
+                    spec.fork_name_at_epoch(Epoch::new(0)),
+                    NumBlobs::None,
+                    &mut rng,
+                )
+                .0
+                .into()
             })
             .collect::<Vec<Arc<SignedBeaconBlock<E>>>>();
 
@@ -565,7 +571,6 @@ mod tests {
         // Send blocks and complete terminate response
         info.add_blocks(blocks_req_id, blocks).unwrap();
 
-        let spec = Arc::new(test_spec::<E>());
         let da_checker = Arc::new(test_da_checker(spec.clone(), NodeCustodyType::Fullnode));
 
         // Assert response is finished and RpcBlocks can be constructed