test_state_gas_spill_header_gas_used()

Documentation for tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_create.py::test_state_gas_spill_header_gas_used@5c024cbb.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_create.py::test_state_gas_spill_header_gas_used --fork Amsterdam

Verify header gas_used when state gas spills into gas_left.

A transaction performs an SSTORE with state gas partially from the reservoir and partially spilling into gas_left. Verify the block header gas_used reflects the correct 2D max accounting.

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

@pytest.mark.valid_from("EIP8037")
def test_state_gas_spill_header_gas_used(
    blockchain_test: BlockchainTestFiller,
    pre: Alloc,
    fork: Fork,
) -> None:
    """
    Verify header gas_used when state gas spills into gas_left.

    A transaction performs an SSTORE with state gas partially from
    the reservoir and partially spilling into gas_left. Verify the
    block header gas_used reflects the correct 2D max accounting.
    """
    # SSTORE zero-to-nonzero with small reservoir
    sstore_code = Op.SSTORE(0, 1) + Op.STOP
    contract = pre.deploy_contract(code=sstore_code)

    intrinsic_cost = fork.transaction_intrinsic_cost_calculator()
    intrinsic_gas = intrinsic_cost()

    sstore_state_gas = sstore_code.state_cost(fork)
    evm_regular = sstore_code.regular_cost(fork)

    # Reservoir = half the SSTORE state gas, rest spills to gas_left
    reservoir = sstore_state_gas // 2

    tx = Transaction(
        to=contract,
        state_gas_reservoir=reservoir,
        sender=pre.fund_eoa(),
    )

    tx_regular = intrinsic_gas + evm_regular
    tx_state = sstore_state_gas
    expected_gas_used = max(tx_regular, tx_state)

    blockchain_test(
        pre=pre,
        blocks=[
            Block(
                txs=[tx],
                header_verify=Header(gas_used=expected_gas_used),
            ),
        ],
        post={contract: Account(storage={0: 1})},
    )

Parametrized Test Cases

This test generates 1 parametrized test case across 1 fork.