test_create_oog_during_state_gas_charge()

Documentation for tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_call.py::test_create_oog_during_state_gas_charge@a9abd46e.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_call.py::test_create_oog_during_state_gas_charge --fork Amsterdam

Verify the parent reservoir is refunded when a child's CREATE OOGs while charging account-creation state gas. The grandchild SSTORE is forwarded only its regular stipend, so it succeeds only if the refund landed in the reservoir (not in gas_left).

Source code in tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_call.py

@pytest.mark.with_all_create_opcodes()
@pytest.mark.valid_from("EIP8037")
def test_create_oog_during_state_gas_charge(
    state_test: StateTestFiller,
    pre: Alloc,
    fork: Fork,
    create_opcode: Op,
) -> None:
    """
    Verify the parent reservoir is refunded when a child's CREATE
    OOGs while charging account-creation state gas. The grandchild
    SSTORE is forwarded only its regular stipend, so it succeeds
    only if the refund landed in the reservoir (not in `gas_left`).
    """
    sstore_state_gas = Op.SSTORE(new_value=1).state_cost(fork)

    init_code = Op.STOP
    inner_create_call = (
        create_opcode(value=0, offset=31, size=1, salt=0)
        if create_opcode == Op.CREATE2
        else create_opcode(value=0, offset=31, size=1)
    )

    inner = pre.deploy_contract(
        code=(
            Op.MSTORE(
                0,
                int.from_bytes(bytes(init_code), "big") << 248,
            )
            + Op.POP(inner_create_call)
        ),
    )

    grandchild_storage = Storage()
    grandchild_code = Op.SSTORE(grandchild_storage.store_next(1, "ran"), 1)
    grandchild = pre.deploy_contract(code=grandchild_code)

    grandchild_stipend = grandchild_code.regular_cost(fork)

    parent = pre.deploy_contract(
        code=(
            Op.POP(Op.CALL(gas=20_000, address=inner))
            + Op.POP(Op.CALL(gas=grandchild_stipend, address=grandchild))
        ),
    )

    tx = Transaction(
        to=parent,
        state_gas_reservoir=sstore_state_gas,
        sender=pre.fund_eoa(),
    )

    state_test(
        pre=pre,
        post={grandchild: Account(storage=grandchild_storage)},
        tx=tx,
    )

Parametrized Test Cases

This test generates 2 parametrized test cases across 1 fork.