osaka: add specific exceptions on tests

Author: souradeep-das

src/ethereum/osaka/exceptions.py

@@ -113,3 +113,13 @@ class InitCodeTooLargeError(InvalidTransaction):
     """
     The init code of the transaction is too large.
     """
+
+
+class TransactionGasLimitExceededError(InvalidTransaction):
+    """
+    The transaction has specified a gas limit that is greater than the allowed
+    maximum.
+
+    Note that this is _not_ the exception thrown when bytecode execution runs
+    out of gas.
+    """

src/ethereum/osaka/transactions.py

@@ -19,7 +19,11 @@
     NonceOverflowError,
 )
 
-from .exceptions import InitCodeTooLargeError, TransactionTypeError
+from .exceptions import (
+    InitCodeTooLargeError,
+    TransactionGasLimitExceededError,
+    TransactionTypeError,
+)
 from .fork_types import Address, Authorization, VersionedHash
 
 TX_BASE_COST = Uint(21000)
@@ -556,8 +560,10 @@ def validate_transaction(tx: Transaction) -> Tuple[Uint, Uint]:
         raise InsufficientTransactionGasError("Insufficient gas")
     if U256(tx.nonce) >= U256(U64.MAX_VALUE):
         raise NonceOverflowError("Nonce too high")
+    if tx.to == Bytes0(b"") and len(tx.data) > MAX_INIT_CODE_SIZE:
+        raise InitCodeTooLargeError("Code size too large")
     if tx.gas > TX_MAX_GAS_LIMIT:
-        raise InvalidTransaction("Gas limit too high")
+        raise TransactionGasLimitExceededError("Gas limit too high")
 
     return intrinsic_gas, calldata_floor_gas_cost