test_calldata_floor_binds_regardless_of_funding()

Documentation for tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_calldata_floor.py::test_calldata_floor_binds_regardless_of_funding@622620d8.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_calldata_floor.py::test_calldata_floor_binds_regardless_of_funding --fork Amsterdam

Bind the calldata floor however the state charge is funded.

The floor is a lower bound on the sender's bill in the execution dimension alone, so splitting the SSTORE-set charge between the reservoir and gas_left must not move it. All three fundings bill the sender exactly the floor.

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

@pytest.mark.parametrize(
    "funding",
    ["reservoir", "mixed", "spill"],
)
@pytest.mark.valid_from("EIP8037")
def test_calldata_floor_binds_regardless_of_funding(
    state_test: StateTestFiller,
    pre: Alloc,
    fork: Fork,
    funding: str,
) -> None:
    """
    Bind the calldata floor however the state charge is funded.

    The floor is a lower bound on the sender's bill in the execution
    dimension alone, so splitting the SSTORE-set charge between the
    reservoir and `gas_left` must not move it. All three fundings bill
    the sender exactly the floor.
    """
    storage = Storage()
    code = Op.SSTORE(storage.store_next(1), 1, new_value=1)
    state_cost = code.state_cost(fork)

    calldata = b"\x00" * 5000
    floor = fork.transaction_data_floor_cost_calculator()(data=calldata)
    intrinsic = fork.transaction_intrinsic_cost_calculator()(
        calldata=calldata,
        return_cost_deducted_prior_execution=True,
    )
    tx_execution = intrinsic + code.execution_cost(fork)
    assert floor > tx_execution + state_cost, (
        "calldata floor must exceed the sender's pre-floor bill"
    )

    contract = pre.deploy_contract(code=code)

    tx = Transaction(
        to=contract,
        data=calldata,
        state_gas_reservoir={
            "reservoir": state_cost,
            "mixed": state_cost // 2,
            "spill": 0,
        }[funding],
        sender=pre.fund_eoa(),
        expected_receipt=TransactionReceipt(cumulative_gas_used=floor),
    )
    state_test(
        pre=pre,
        post={contract: Account(storage=storage)},
        tx=tx,
        blockchain_test_header_verify=Header(gas_used=floor),
    )

Parametrized Test Cases

This test generates 3 parametrized test cases across 1 fork.