test_receipt_cumulative_differs_from_header_gas_used()

Documentation for tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_block_2d_gas_accounting.py::test_receipt_cumulative_differs_from_header_gas_used@c74f1a67.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_block_2d_gas_accounting.py::test_receipt_cumulative_differs_from_header_gas_used --fork Amsterdam

Verify receipt cumulative_gas_used can diverge from header gas_used under 2D accounting when state gas dominates.

Source code in tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_block_2d_gas_accounting.py

@pytest.mark.valid_from("EIP8037")
def test_receipt_cumulative_differs_from_header_gas_used(
    blockchain_test: BlockchainTestFiller,
    pre: Alloc,
    fork: Fork,
) -> None:
    """
    Verify receipt cumulative_gas_used can diverge from header
    gas_used under 2D accounting when state gas dominates.
    """
    tx_regular, tx_state = sstore_tx_gas(fork)
    num_txs = 3

    sstore_state_gas = Op.SSTORE(new_value=1).state_cost(fork)
    per_tx_gas_used = tx_regular + tx_state

    txs: list[Transaction] = []
    post: dict = {}
    for i in range(num_txs):
        storage = Storage()
        contract = pre.deploy_contract(
            code=Op.SSTORE(storage.store_next(1), 1) + Op.STOP,
        )
        txs.append(
            Transaction(
                to=contract,
                state_gas_reservoir=sstore_state_gas,
                sender=pre.fund_eoa(),
                expected_receipt=TransactionReceipt(
                    cumulative_gas_used=(i + 1) * per_tx_gas_used,
                ),
            )
        )
        post[contract] = Account(storage=storage)

    block_regular = num_txs * tx_regular
    block_state = num_txs * tx_state
    header_gas_used = max(block_regular, block_state)

    assert block_state > block_regular
    assert header_gas_used < num_txs * per_tx_gas_used

    blockchain_test(
        pre=pre,
        blocks=[
            Block(
                txs=txs,
                header_verify=Header(gas_used=header_gas_used),
            ),
        ],
        post=post,
    )

Parametrized Test Cases

This test generates 1 parametrized test case across 1 fork.