test_create_selfdestruct_sstore_restoration_refund()

Documentation for tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_selfdestruct.py::test_create_selfdestruct_sstore_restoration_refund@5c024cbb.

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_sstore_restoration_refund --fork Amsterdam

Verify SSTORE restoration still refunds its slot state gas when the surrounding contract SELFDESTRUCTs.

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

@pytest.mark.valid_from("EIP8037")
def test_create_selfdestruct_sstore_restoration_refund(
    blockchain_test: BlockchainTestFiller,
    pre: Alloc,
    fork: Fork,
) -> None:
    """
    Verify SSTORE restoration still refunds its slot state gas when
    the surrounding contract SELFDESTRUCTs.
    """
    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 = (
        Op.SSTORE.with_metadata(
            key_warm=False,
            original_value=0,
            current_value=0,
            new_value=1,
        )(0, 1)
        + Op.SSTORE.with_metadata(
            key_warm=True,
            original_value=0,
            current_value=1,
            new_value=0,
        )(0, 0)
        + Op.SELFDESTRUCT.with_metadata(address_warm=True)(Op.ADDRESS)
    )
    mstore_value, size = init_code_at_high_bytes(init_code)

    mstore = Op.MSTORE.with_metadata(new_memory_size=32, old_memory_size=0)(
        0, mstore_value
    )
    create_call = Op.CREATE.with_metadata(init_code_size=size)(0, 0, size)
    factory_code = mstore + Op.POP(create_call)
    factory = pre.deploy_contract(code=factory_code)

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

    tx = Transaction(
        to=factory,
        state_gas_reservoir=new_account_state_gas + sstore_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 1 parametrized test case across 1 fork.