chore(blockifier_reexecution): implement get_old_block_hash_and_numbe…

…r for offline state reader

crates/blockifier_reexecution/src/main.rs

@@ -1,3 +1,4 @@
+use blockifier::abi::constants;
 use blockifier_reexecution::assert_eq_state_diff;
 use blockifier_reexecution::state_reader::reexecution_state_reader::ReexecutionStateReader;
 use blockifier_reexecution::state_reader::test_state_reader::{
@@ -114,6 +115,13 @@ fn main() {
 
             let block_info_next_block = next_block_state_reader.get_block_info().unwrap();
 
+            let old_block_number = BlockNumber(
+                block_info_next_block.block_number.0 - constants::STORED_BLOCK_HASH_BUFFER,
+            );
+
+            let old_block_hash =
+                last_block_state_reader.get_old_block_hash(old_block_number).unwrap();
+
             let starknet_version = next_block_state_reader.get_starknet_version().unwrap();
 
             let state_diff_next_block = next_block_state_reader.get_state_diff().unwrap();
@@ -146,6 +154,7 @@ fn main() {
                 transactions_next_block,
                 contract_class_mapping,
                 state_diff_next_block,
+                old_block_hash,
             };
 
             serializable_offline_reexecution_data

crates/blockifier_reexecution/src/state_reader/test_state_reader.rs

@@ -66,13 +66,13 @@ pub struct OfflineReexecutionData {
 
 #[derive(Serialize, Deserialize)]
 pub struct SerializableOfflineReexecutionData {
-    state_maps: ReexecutionStateMaps,
-    contract_class_mapping: StarknetContractClassMapping,
-    block_info_next_block: BlockInfo,
-    starknet_version: StarknetVersion,
-    transactions_next_block: Vec<(Transaction, TransactionHash)>,
-    state_diff_next_block: CommitmentStateDiff,
-    old_block_hash: BlockHash,
+    pub state_maps: ReexecutionStateMaps,
+    pub block_info_next_block: BlockInfo,
+    pub starknet_version: StarknetVersion,
+    pub transactions_next_block: Vec<(Transaction, TransactionHash)>,
+    pub state_diff_next_block: CommitmentStateDiff,
+    pub contract_class_mapping: StarknetContractClassMapping,
+    pub old_block_hash: BlockHash,
 }
 
 impl SerializableOfflineReexecutionData {