test_duplicate_signer_authorizations()

Documentation for tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_set_code.py::test_duplicate_signer_authorizations@87aba1a3.

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_duplicate_signer_authorizations --fork Amsterdam

Test two authorizations from the same signer with increasing nonces.

The first authorization (nonce 0) sets a fresh delegation on the existing authority, paying the first-write ACCOUNT_WRITE and the top-frame AUTH_BASE. The second (nonce 1) overwrites it to a different target; the authority is already written and already had a delegation set in this transaction, so it pays nothing beyond the intrinsic base. The authority ends delegated to the second target with nonce 2.

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

@pytest.mark.valid_from("EIP8037")
def test_duplicate_signer_authorizations(
    state_test: StateTestFiller,
    pre: Alloc,
    fork: Fork,
) -> None:
    """
    Test two authorizations from the same signer with increasing nonces.

    The first authorization (nonce 0) sets a fresh delegation on the
    existing authority, paying the first-write ``ACCOUNT_WRITE`` and the
    top-frame ``AUTH_BASE``. The second (nonce 1) overwrites it to a
    different target; the authority is already written and already had a
    delegation set in this transaction, so it pays nothing beyond the
    intrinsic base. The authority ends delegated to the second target
    with nonce 2.
    """
    contract_a = pre.deploy_contract(code=Op.STOP)
    contract_b = pre.deploy_contract(code=Op.STOP)

    signer = pre.fund_eoa()
    authorization_list = [
        AuthorizationTuple(
            address=contract_a,
            nonce=0,
            signer=signer,
            creates_account=False,
            writes_delegation=True,
        ),
        AuthorizationTuple(
            address=contract_b,
            nonce=1,
            signer=signer,
            creates_account=False,
            writes_delegation=False,
            first_write=False,
        ),
    ]

    intrinsic_regular, top_frame_regular, top_frame_state = _auth_gas(
        fork, authorization_list
    )
    cumulative_gas_used, header_gas_used = _receipt_and_header(
        intrinsic_regular, top_frame_regular, top_frame_state
    )

    tx = Transaction(
        to=contract_a,
        authorization_list=authorization_list,
        sender=pre.fund_eoa(),
        expected_receipt=TransactionReceipt(
            cumulative_gas_used=cumulative_gas_used,
        ),
    )

    post = {
        signer: Account(
            nonce=2,
            code=Spec7702.delegation_designation(contract_b),
        ),
    }
    state_test(
        pre=pre,
        post=post,
        tx=tx,
        blockchain_test_header_verify=Header(gas_used=header_gas_used),
    )

Parametrized Test Cases

This test generates 1 parametrized test case across 1 fork.