feat: add integration test for EIP-7702 authorization overflow scenarios

Author: darwintree

integration_tests/tests/transaction/eip7702/test_eip7702_auth_overflow.py

@@ -0,0 +1,62 @@
+import pytest
+from eth_account.signers.local import LocalAccount
+from web3 import Web3
+from web3.exceptions import Web3RPCError
+
+from ethereum_test_tools import (
+    Initcode,
+    Opcodes as Op,
+    Storage,
+    Bytecode,
+    Macros as Om,
+)
+from web3.types import RPCEndpoint
+
+MAX_AUTH_CHAIN_ID = 2 ** 256 - 1
+MAX_AUTH_NONCE = 2 ** 64 - 1
+
+@pytest.fixture(scope="module")
+def contract_address(ew3: Web3) -> str:
+    return ew3.eth.account.create().address
+
+
+def get_new_fund_account(ew3: Web3) -> LocalAccount:
+    new_account = ew3.eth.account.create()
+    tx_hash = ew3.eth.send_transaction(
+        {
+            "to": new_account.address,
+            "value": ew3.to_wei(1, "ether"),
+        }
+    )
+    ew3.eth.wait_for_transaction_receipt(tx_hash)
+    return new_account
+
+@pytest.mark.parametrize("auth_chain_id, auth_nonce, should_overflow", [
+    (MAX_AUTH_CHAIN_ID, MAX_AUTH_NONCE, False),
+    (MAX_AUTH_CHAIN_ID+1, MAX_AUTH_NONCE, True),
+    (MAX_AUTH_CHAIN_ID, MAX_AUTH_NONCE+1, True),
+])
+def test_auth_overflow_chain_id(ew3: Web3, contract_address: str, auth_chain_id: int, auth_nonce: int, should_overflow: bool):
+    acct = get_new_fund_account(ew3)
+    nonce = ew3.eth.get_transaction_count(acct.address)
+    auth = ew3.eth.account.sign_authorization({
+        "chainId": auth_chain_id,
+        "address": contract_address,
+        "nonce": auth_nonce,
+    }, acct.key)
+    raw_tx = acct.sign_transaction({
+        "to": ew3.eth.account.create().address,
+        "chainId": ew3.eth.chain_id,
+        "nonce": nonce,
+        "maxFeePerGas": ew3.to_wei(1, "gwei"),
+        "maxPriorityFeePerGas": ew3.to_wei(1, "gwei"),
+        "gas": 200000,
+        "authorizationList": [auth]
+    })
+    if should_overflow:
+        with pytest.raises(Web3RPCError) as e:
+            ew3.eth.send_raw_transaction(raw_tx.raw_transaction)
+        assert e.value.message == "{'code': -32602, 'message': 'failed to decode signed transaction'}"
+    else:
+        tx_hash = ew3.eth.send_raw_transaction(raw_tx.raw_transaction)
+        ew3.eth.wait_for_transaction_receipt(tx_hash)