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970 | @pytest.mark.parametrize(
"oog_boundary",
list(OutOfGasBoundary),
ids=lambda x: x.value,
)
@pytest.mark.parametrize(
"target_is_warm", [False, True], ids=["cold_target", "warm_target"]
)
@pytest.mark.parametrize(
"delegation_is_warm",
[False, True],
ids=["cold_delegation", "warm_delegation"],
)
@pytest.mark.parametrize("value", [0, 1], ids=["no_value", "with_value"])
@pytest.mark.parametrize(
"args_size,ret_size",
[
pytest.param(0, 0, id="no_memory"),
pytest.param(4096, 0, id="args_large"),
pytest.param(0, 4096, id="ret_large"),
pytest.param(32, 32, id="both_small"),
],
)
def test_bal_call_7702_delegation_and_oog(
pre: Alloc,
blockchain_test: BlockchainTestFiller,
fork: Fork,
oog_boundary: OutOfGasBoundary,
target_is_warm: bool,
delegation_is_warm: bool,
value: int,
args_size: int,
ret_size: int,
) -> None:
"""
CALL with 7702 delegation - test all OOG boundaries.
When target_is_warm or delegation_is_warm, we use EIP-2930 tx access list.
Access list warming does NOT add targets to BAL - only EVM access does.
Memory expansion is parametrized independently for args and ret per #1910.
"""
alice = pre.fund_eoa()
delegation_target = pre.deploy_contract(code=Op.STOP)
target = pre.fund_eoa(amount=0, delegation=delegation_target)
new_memory_size = max(args_size, ret_size)
# Full gas metadata: includes delegation cost
call_code = Op.CALL(
gas=0,
address=target,
value=value,
args_size=args_size,
args_offset=0,
ret_size=ret_size,
ret_offset=0,
address_warm=target_is_warm,
value_transfer=value > 0,
account_new=False,
new_memory_size=new_memory_size,
delegated_address=True,
delegated_address_warm=delegation_is_warm,
)
caller = pre.deploy_contract(code=call_code, balance=value)
# Build access list for warming
access_list: list[AccessList] = []
if target_is_warm:
access_list.append(AccessList(address=target, storage_keys=[]))
if delegation_is_warm:
access_list.append(
AccessList(address=delegation_target, storage_keys=[])
)
intrinsic_cost = fork.transaction_intrinsic_cost_calculator()(
access_list=access_list
)
# Static gas (before state access): no delegation
call_static = Op.CALL(
gas=0,
address=target,
value=value,
args_size=args_size,
args_offset=0,
ret_size=ret_size,
ret_offset=0,
address_warm=target_is_warm,
value_transfer=value > 0,
account_new=False,
new_memory_size=new_memory_size,
)
if oog_boundary == OutOfGasBoundary.OOG_BEFORE_TARGET_ACCESS:
gas_limit = intrinsic_cost + call_static.gas_cost(fork) - 1
elif oog_boundary == OutOfGasBoundary.OOG_AFTER_TARGET_ACCESS:
# Enough for static_gas only - not enough for delegation_cost
gas_limit = intrinsic_cost + call_static.gas_cost(fork)
elif oog_boundary == OutOfGasBoundary.OOG_SUCCESS_MINUS_1:
# One less than full cost - not enough for full call
gas_limit = intrinsic_cost + call_code.gas_cost(fork) - 1
else:
gas_limit = intrinsic_cost + call_code.gas_cost(fork)
tx = Transaction(
sender=alice,
to=caller,
gas_limit=gas_limit,
access_list=access_list,
)
# Access list warming does NOT add to BAL - only EVM execution does
if oog_boundary == OutOfGasBoundary.OOG_BEFORE_TARGET_ACCESS:
target_in_bal = False
delegation_in_bal = False
elif oog_boundary in (
OutOfGasBoundary.OOG_AFTER_TARGET_ACCESS,
OutOfGasBoundary.OOG_SUCCESS_MINUS_1,
):
# Both cases: target accessed but not enough gas for full call
# so delegation is NOT read (static check optimization)
target_in_bal = True
delegation_in_bal = False
else:
target_in_bal = True
delegation_in_bal = True
value_transferred = value > 0 and oog_boundary == OutOfGasBoundary.SUCCESS
account_expectations: Dict[Address, BalAccountExpectation | None] = {
caller: (
BalAccountExpectation(
balance_changes=[
BalBalanceChange(block_access_index=1, post_balance=0)
]
)
if value_transferred
else BalAccountExpectation.empty()
),
delegation_target: (
BalAccountExpectation.empty() if delegation_in_bal else None
),
}
if target_in_bal:
if value_transferred:
account_expectations[target] = BalAccountExpectation(
balance_changes=[
BalBalanceChange(block_access_index=1, post_balance=value)
]
)
else:
account_expectations[target] = BalAccountExpectation.empty()
else:
account_expectations[target] = None
# Post-state balance checks verify value transfer only happened on success
post_state: Dict[Address, Account] = {alice: Account(nonce=1)}
if value > 0:
post_state[target] = Account(balance=value if value_transferred else 0)
post_state[caller] = Account(balance=0 if value_transferred else value)
blockchain_test(
pre=pre,
blocks=[
Block(
txs=[tx],
expected_block_access_list=BlockAccessListExpectation(
account_expectations=account_expectations
),
)
],
post=post_state,
)
|