test_call_insufficient_balance_refunds_new_account_state_gas()

Documentation for tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_call.py::test_call_insufficient_balance_refunds_new_account_state_gas@622620d8.

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_call_insufficient_balance_refunds_new_account_state_gas --fork Amsterdam

Refill NEW_ACCOUNT state gas on a value CALL that fails the balance check before the child frame.

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

@pytest.mark.parametrize("depth", ["top", "child"])
@pytest.mark.parametrize(
    "funding",
    [
        pytest.param("reservoir", id="reservoir"),
        pytest.param("mixed", id="mixed"),
    ],
)
@pytest.mark.valid_from("EIP8037")
def test_call_insufficient_balance_refunds_new_account_state_gas(
    state_test: StateTestFiller,
    pre: Alloc,
    fork: Fork,
    funding: str,
    depth: str,
) -> None:
    """
    Refill NEW_ACCOUNT state gas on a value CALL that fails the balance
    check before the child frame.
    """
    sstore_state_gas = Op.SSTORE(new_value=1).state_cost(fork)

    probe_storage = Storage()
    probe_code = Op.SSTORE(probe_storage.store_next(1, "probe_ran"), 1)
    probe = pre.deploy_contract(probe_code)

    probe_stipend = probe_code.execution_cost(fork)

    non_existent_account = pre.nonexistent_account()

    value_call = Op.CALL(
        gas=Op.GAS,
        address=non_existent_account,
        value=1,
        value_transfer=True,
        account_new=True,
    )
    parent = pre.deploy_contract(
        code=(
            Op.POP(value_call)
            + Op.POP(Op.CALL(gas=probe_stipend, address=probe))
        ),
        balance=0,
    )

    new_account_state_gas = value_call.state_cost(fork)
    assert new_account_state_gas > sstore_state_gas
    if funding == "mixed":
        reservoir = sstore_state_gas
    else:
        reservoir = new_account_state_gas

    if depth == "child":
        target = pre.deploy_contract(
            code=Op.POP(Op.CALL(gas=Op.GAS, address=parent))
        )
    else:
        target = parent

    tx = Transaction(
        to=target,
        state_gas_reservoir=reservoir,
        sender=pre.fund_eoa(),
    )

    post = {probe: Account(storage=probe_storage)}
    state_test(
        pre=pre,
        post=post,
        tx=tx,
        blockchain_test_header_verify=Header(gas_used=sstore_state_gas),
    )

Parametrized Test Cases

This test generates 4 parametrized test cases across 1 fork.