test_create_selfdestruct_no_refund_account_and_storage()

Documentation for tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_selfdestruct.py::test_create_selfdestruct_no_refund_account_and_storage@87aba1a3.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_selfdestruct.py::test_create_selfdestruct_no_refund_account_and_storage --fork Amsterdam

Verify same tx CREATE+SELFDESTRUCT does not refund state gas.

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

@pytest.mark.parametrize(
    "num_slots",
    [
        pytest.param(0, id="no_storage"),
        pytest.param(1, id="one_slot"),
        pytest.param(5, id="five_slots"),
    ],
)
@pytest.mark.with_all_create_opcodes()
@pytest.mark.valid_from("EIP8037")
def test_create_selfdestruct_no_refund_account_and_storage(
    blockchain_test: BlockchainTestFiller,
    pre: Alloc,
    fork: Fork,
    create_opcode: Op,
    num_slots: int,
) -> None:
    """Verify same tx CREATE+SELFDESTRUCT does not refund state gas."""
    new_account_state_gas = fork.gas_costs().NEW_ACCOUNT
    sstore_state_gas = Op.SSTORE(new_value=1).state_cost(fork)
    intrinsic_gas = fork.transaction_intrinsic_cost_calculator()()

    init_code = Bytecode()
    for i in range(num_slots):
        init_code += Op.SSTORE.with_metadata(
            key_warm=False,
            original_value=0,
            current_value=0,
            new_value=1,
        )(i, 1)
    init_code += Op.SELFDESTRUCT.with_metadata(address_warm=True)(Op.ADDRESS)
    mstore_value, size = init_code_at_high_bytes(init_code)

    # Metadata so `.gas_cost(fork)` matches runtime charges.
    mstore = Op.MSTORE.with_metadata(new_memory_size=32, old_memory_size=0)(
        0, mstore_value
    )
    create_metadata = create_opcode.with_metadata(init_code_size=size)
    create_call = (
        create_metadata(value=0, offset=0, size=size, salt=0)
        if create_opcode == Op.CREATE2
        else create_metadata(value=0, offset=0, size=size)
    )
    factory_code = mstore + Op.POP(create_call)
    factory = pre.deploy_contract(code=factory_code)

    total_state_gas = new_account_state_gas + num_slots * sstore_state_gas
    regular_used = (
        intrinsic_gas
        + factory_code.gas_cost(fork)
        + init_code.gas_cost(fork)
        - total_state_gas
    )
    expected_gas_used = max(regular_used, total_state_gas)

    tx = Transaction(
        to=factory,
        state_gas_reservoir=total_state_gas,
        sender=pre.fund_eoa(),
    )

    blockchain_test(
        pre=pre,
        blocks=[
            Block(txs=[tx], header_verify=Header(gas_used=expected_gas_used)),
        ],
        post={},
    )

Parametrized Test Cases

This test generates 6 parametrized test cases across 1 fork.