Fix discovered bug in rpc tests

Author: macladson

beacon_node/lighthouse_network/tests/rpc_tests.rs

@@ -1018,7 +1018,7 @@ fn test_tcp_columns_by_root_chunked_rpc() {
                 },
                 signature: Signature::empty(),
             },
-            column: vec![vec![0; E::bytes_per_blob()].try_into().unwrap()]
+            column: vec![vec![0; E::bytes_per_cell()].try_into().unwrap()]
                 .try_into()
                 .unwrap(),
             kzg_commitments: vec![KzgCommitment::empty_for_testing()].try_into().unwrap(),
@@ -1163,7 +1163,7 @@ fn test_tcp_columns_by_range_chunked_rpc() {
                 },
                 signature: Signature::empty(),
             },
-            column: vec![vec![0; E::bytes_per_blob()].try_into().unwrap()]
+            column: vec![vec![0; E::bytes_per_cell()].try_into().unwrap()]
                 .try_into()
                 .unwrap(),
             kzg_commitments: vec![KzgCommitment::empty_for_testing()].try_into().unwrap(),

consensus/types/src/eth_spec.rs

@@ -310,6 +310,11 @@ pub trait EthSpec: 'static + Default + Sync + Send + Clone + Debug + PartialEq +
         Self::BytesPerBlob::to_usize()
     }
 
+    /// Returns the `BYTES_PER_CELL` constant for this specification.
+    fn bytes_per_cell() -> usize {
+        Self::BytesPerCell::to_usize()
+    }
+
     /// Returns the `KZG_COMMITMENT_INCLUSION_PROOF_DEPTH` preset for this specification.
     fn kzg_proof_inclusion_proof_depth() -> usize {
         Self::KzgCommitmentInclusionProofDepth::to_usize()