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test_access_list_intrinsic_surcharge()

Documentation for tests/amsterdam/eip8038_state_access_gas_cost_increase/test_access_list_gas.py::test_access_list_intrinsic_surcharge@5c024cbb.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/amsterdam/eip8038_state_access_gas_cost_increase/test_access_list_gas.py::test_access_list_intrinsic_surcharge --fork Amsterdam

Assert the per-entry intrinsic access-list surcharge.

The intrinsic-cost delta from adding the access list, minus the EIP-7981 floor-token contribution, must equal n_addr * TX_ACCESS_LIST_ADDRESS + n_keys * TX_ACCESS_LIST_STORAGE_KEY. A simple value-less transaction then exercises the access list end to end.

Source code in tests/amsterdam/eip8038_state_access_gas_cost_increase/test_access_list_gas.py 
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@EIPChecklist.GasCostChanges.Test.GasUpdatesMeasurement()
@pytest.mark.parametrize("n_addr,n_keys_each,duplicate", ACCESS_LIST_SHAPES)
def test_access_list_intrinsic_surcharge(
    state_test: StateTestFiller,
    pre: Alloc,
    fork: Fork,
    n_addr: int,
    n_keys_each: int,
    duplicate: bool,
) -> None:
    """
    Assert the per-entry intrinsic access-list surcharge.

    The intrinsic-cost delta from adding the access list, minus the
    EIP-7981 floor-token contribution, must equal
    ``n_addr * TX_ACCESS_LIST_ADDRESS + n_keys * TX_ACCESS_LIST_STORAGE_KEY``.
    A simple value-less transaction then exercises the access list end to
    end.
    """
    gas_costs = fork.gas_costs()
    intrinsic = fork.transaction_intrinsic_cost_calculator()

    access_list = _make_access_list(n_addr, n_keys_each, duplicate=duplicate)
    n_keys = n_addr * n_keys_each

    base = intrinsic(return_cost_deducted_prior_execution=True)
    with_al = intrinsic(
        access_list=access_list,
        return_cost_deducted_prior_execution=True,
    )
    surcharge = (
        with_al - base - _access_list_floor_token_gas(access_list, fork)
    )
    expected = (
        n_addr * gas_costs.TX_ACCESS_LIST_ADDRESS
        + n_keys * gas_costs.TX_ACCESS_LIST_STORAGE_KEY
    )
    assert surcharge == expected

    contract = pre.deploy_contract(code=Op.STOP)
    tx = Transaction(
        to=contract,
        sender=pre.fund_eoa(),
        access_list=access_list if access_list else None,
    )

    state_test(pre=pre, post={}, tx=tx)

Parametrized Test Cases

This test generates 5 parametrized test cases across 1 fork.