test_multi_tx_block_auth_refund_and_sstore()

Documentation for tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_set_code.py::test_multi_tx_block_auth_refund_and_sstore@a9abd46e.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_set_code.py::test_multi_tx_block_auth_refund_and_sstore --fork Amsterdam

Test multi-transaction block with auth refund and SSTORE state gas.

Two transactions in one block: 1. A SetCode tx authorizing an existing account (gets new-account state gas refund to reservoir). The refund reduces intrinsic_state_gas. 2. A regular tx performing an SSTORE (charges STATE_BYTES_PER_STORAGE_SET * cpsb state gas).

Verifies block-level state gas accounting correctly handles both the auth refund from tx1 and the SSTORE charge from tx2.

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

@pytest.mark.valid_from("EIP8037")
def test_multi_tx_block_auth_refund_and_sstore(
    blockchain_test: BlockchainTestFiller,
    pre: Alloc,
    fork: Fork,
) -> None:
    """
    Test multi-transaction block with auth refund and SSTORE state gas.

    Two transactions in one block:
    1. A SetCode tx authorizing an existing account (gets new-account state gas
       refund to reservoir). The refund reduces intrinsic_state_gas.
    2. A regular tx performing an SSTORE (charges
       STATE_BYTES_PER_STORAGE_SET * cpsb state gas).

    Verifies block-level state gas accounting correctly handles both
    the auth refund from tx1 and the SSTORE charge from tx2.
    """
    auth_state_gas = fork.transaction_intrinsic_state_gas(
        authorization_count=1,
    )
    sstore_state_gas = Op.SSTORE(new_value=1).state_cost(fork)

    contract = pre.deploy_contract(code=Op.STOP)

    # TX 1: auth targeting existing account (gets refund)
    signer = pre.fund_eoa()
    authorization_list = [
        AuthorizationTuple(
            address=contract,
            nonce=0,
            signer=signer,
        ),
    ]
    sender_1 = pre.fund_eoa()
    tx_1 = Transaction(
        to=contract,
        state_gas_reservoir=auth_state_gas,
        authorization_list=authorization_list,
        sender=sender_1,
    )

    # TX 2: SSTORE zero-to-nonzero (charges state gas)
    storage = Storage()
    sstore_contract = pre.deploy_contract(
        code=Op.SSTORE(storage.store_next(1), 1),
    )
    sender_2 = pre.fund_eoa()
    tx_2 = Transaction(
        to=sstore_contract,
        state_gas_reservoir=sstore_state_gas,
        sender=sender_2,
    )

    blockchain_test(
        pre=pre,
        blocks=[Block(txs=[tx_1, tx_2])],
        post={sstore_contract: Account(storage=storage)},
    )

Parametrized Test Cases

This test generates 1 parametrized test case across 1 fork.