test_sstore_state_gas_drawn_from_reservoir()

Documentation for tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_sstore.py::test_sstore_state_gas_drawn_from_reservoir@622620d8.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_sstore.py::test_sstore_state_gas_drawn_from_reservoir --fork Amsterdam

Test SSTORE state gas drawn from reservoir before gas_left.

Provide enough gas above TX_MAX_GAS_LIMIT to fully cover the SSTORE state gas from the reservoir, leaving gas_left untouched by the state gas charge.

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

@pytest.mark.valid_from("EIP8037")
def test_sstore_state_gas_drawn_from_reservoir(
    state_test: StateTestFiller,
    pre: Alloc,
    fork: Fork,
) -> None:
    """
    Test SSTORE state gas drawn from reservoir before gas_left.

    Provide enough gas above TX_MAX_GAS_LIMIT to fully cover the
    SSTORE state gas from the reservoir, leaving gas_left untouched
    by the state gas charge.
    """
    measured = Op.SSTORE(1, 1)
    measured_execution = measured.execution_cost(fork)
    sstore_state_gas = measured.state_cost(fork)

    # The recording SSTORE is itself a zero-to-nonzero set; its state
    # gas spills into gas_left because the measured set drained the
    # reservoir first.
    code = CodeGasMeasure(code=measured, sstore_key=0)
    state_gas = code.state_cost(fork)
    tx_execution = (
        fork.transaction_intrinsic_cost_calculator()()
        + code.execution_cost(fork)
    )
    assert state_gas > tx_execution, "state dimension must set the header"

    contract = pre.deploy_contract(code=code)

    tx = Transaction(
        to=contract,
        state_gas_reservoir=sstore_state_gas,
        sender=pre.fund_eoa(),
        expected_receipt=TransactionReceipt(
            cumulative_gas_used=tx_execution + state_gas
        ),
    )

    state_test(
        pre=pre,
        post={contract: Account(storage={0: measured_execution, 1: 1})},
        tx=tx,
        blockchain_test_header_verify=Header(gas_used=state_gas),
    )

Parametrized Test Cases

This test generates 1 parametrized test case across 1 fork.