t8n: Return InvalidBlock exception in result.blockException

Author: marioevz

src/ethereum_spec_tools/evm_tools/t8n/__init__.py

@@ -442,21 +442,25 @@ def apply_body(self) -> None:
             self.fork.is_after_fork("ethereum.prague")
             and not self.options.state_test
         ):
-            requests_from_execution = (
-                self.fork.process_general_purpose_requests(
-                    deposit_requests,
-                    self.alloc.state,
-                    self.env.block_hashes,
-                    self.env.coinbase,
-                    self.env.block_number,
-                    self.env.base_fee_per_gas,
-                    self.env.block_gas_limit,
-                    self.env.block_timestamp,
-                    self.env.prev_randao,
-                    self.chain_id,
-                    self.env.excess_blob_gas,
+            requests_from_execution = []
+            try:
+                requests_from_execution = (
+                    self.fork.process_general_purpose_requests(
+                        deposit_requests,
+                        self.alloc.state,
+                        self.env.block_hashes,
+                        self.env.coinbase,
+                        self.env.block_number,
+                        self.env.base_fee_per_gas,
+                        self.env.block_gas_limit,
+                        self.env.block_timestamp,
+                        self.env.prev_randao,
+                        self.chain_id,
+                        self.env.excess_blob_gas,
+                    )
                 )
-            )
+            except InvalidBlock as e:
+                self.result.block_exception = f"{e}"
             requests_hash = self.fork.compute_requests_hash(
                 requests_from_execution
             )

src/ethereum_spec_tools/evm_tools/t8n/t8n_types.py

@@ -311,6 +311,7 @@ class Result:
     blob_gas_used: Optional[Uint] = None
     requests_hash: Optional[Hash32] = None
     requests: Optional[List[Bytes]] = None
+    block_exception: Optional[str] = None
 
     def to_json(self) -> Any:
         """Encode the result to JSON"""
@@ -360,5 +361,8 @@ def to_json(self) -> Any:
             # T8N doesn't consider the request type byte to be part of the
             # request
             data["requests"] = [encode_to_hex(req) for req in self.requests]
+        
+        if self.block_exception is not None:
+            data["blockException"] = self.block_exception
 
         return data