test_create_selfdestruct_no_refund_code_deposit_state_gas()

Documentation for tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_selfdestruct.py::test_create_selfdestruct_no_refund_code_deposit_state_gas@c74f1a67.

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_code_deposit_state_gas --fork Amsterdam

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

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

@pytest.mark.parametrize(
    "beneficiary_type,code_size",
    [
        pytest.param("self", 2, id="self_tiny"),
        pytest.param("self", 100, id="self_medium"),
        pytest.param("external", 100, id="external_medium"),
    ],
)
@pytest.mark.valid_from("EIP8037")
def test_create_selfdestruct_no_refund_code_deposit_state_gas(
    blockchain_test: BlockchainTestFiller,
    pre: Alloc,
    fork: Fork,
    code_size: int,
    beneficiary_type: str,
) -> None:
    """
    Verify same tx CREATE+SELFDESTRUCT does not refund code deposit
    state gas.
    """
    assert code_size >= 2
    new_account_state_gas = fork.gas_costs().NEW_ACCOUNT
    code_deposit_state_gas = fork.code_deposit_state_gas(code_size=code_size)

    if beneficiary_type == "self":
        selfdestruct = Op.SELFDESTRUCT(Op.ADDRESS)
    else:
        beneficiary = pre.deploy_contract(code=Op.STOP)
        selfdestruct = Op.SELFDESTRUCT(beneficiary)
    sd_len = len(bytes(selfdestruct))
    assert code_size >= sd_len
    deployed = bytes(selfdestruct) + b"\x00" * (code_size - sd_len)
    initcode = Initcode(deploy_code=deployed)
    initcode_len = len(initcode)

    # Nest CREATE directly as the address argument to CALL so the
    # deployed contract's address flows via the stack, avoiding a
    # magic memory slot for address storage and an arbitrary gas
    # budget.
    factory_code = Op.CALLDATACOPY(
        0,
        0,
        Op.CALLDATASIZE,
        data_size=initcode_len,
        new_memory_size=initcode_len,
    ) + Op.POP(
        Op.CALL(
            gas=Op.GAS,
            address=Op.CREATE(
                value=0,
                offset=0,
                size=Op.CALLDATASIZE,
                init_code_size=initcode_len,
            ),
        )
    )
    factory = pre.deploy_contract(code=factory_code)
    created_address = compute_create_address(address=factory, nonce=1)

    total_state_gas = new_account_state_gas + code_deposit_state_gas
    tx = Transaction(
        to=factory,
        data=bytes(initcode),
        state_gas_reservoir=total_state_gas,
        sender=pre.fund_eoa(),
    )

    blockchain_test(
        pre=pre,
        blocks=[Block(txs=[tx])],
        post={created_address: Account.NONEXISTENT},
    )

Parametrized Test Cases

This test generates 3 parametrized test cases across 1 fork.