test_nonce_validity()

Documentation for tests/prague/eip7702_set_code_tx/test_set_code_txs.py::test_nonce_validity@v5.1.0.

Generate fixtures for these test cases for Osaka with:

fill -v tests/prague/eip7702_set_code_tx/test_set_code_txs.py::test_nonce_validity --fork Osaka

Test sending a transaction where the nonce field of an authorization almost overflows the maximum value.

Also test calling the account of the authorization signer in order to verify that the account is not warm.

Source code in tests/prague/eip7702_set_code_tx/test_set_code_txs.py

@pytest.mark.parametrize(
    "account_nonce,authorization_nonce",
    [
        pytest.param(
            Spec.MAX_NONCE,
            Spec.MAX_NONCE,
            id="nonce=2**64-1",
            marks=pytest.mark.execute(pytest.mark.skip(reason="Impossible account nonce")),
        ),
        pytest.param(
            Spec.MAX_NONCE - 1,
            Spec.MAX_NONCE - 1,
            id="nonce=2**64-2",
            marks=pytest.mark.execute(pytest.mark.skip(reason="Impossible account nonce")),
        ),
        pytest.param(
            0,
            1,
            id="nonce=1,account_nonce=0",
        ),
        pytest.param(
            1,
            0,
            id="nonce=0,account_nonce=1",
        ),
    ],
)
@pytest.mark.execute(pytest.mark.skip(reason="Non-zero nonce not supported"))
def test_nonce_validity(
    state_test: StateTestFiller,
    pre: Alloc,
    account_nonce: int,
    authorization_nonce: int,
):
    """
    Test sending a transaction where the nonce field of an authorization almost overflows the
    maximum value.

    Also test calling the account of the authorization signer in order to verify that the account
    is not warm.
    """
    auth_signer = pre.fund_eoa(auth_account_start_balance, nonce=account_nonce)

    success_slot = 1
    return_slot = 2

    valid_authorization = authorization_nonce < 2**64 - 1 and account_nonce == authorization_nonce
    set_code = Op.RETURN(0, 1)
    set_code_to_address = pre.deploy_contract(set_code)

    authorization = AuthorizationTuple(
        address=set_code_to_address,
        nonce=authorization_nonce,
        signer=auth_signer,
    )

    entry_code = (
        Op.SSTORE(success_slot, 1)
        + Op.CALL(address=auth_signer)
        + Op.SSTORE(return_slot, Op.RETURNDATASIZE)
    )
    entry_address = pre.deploy_contract(entry_code)

    tx = Transaction(
        gas_limit=100_000,
        to=entry_address,
        value=0,
        authorization_list=[authorization],
        sender=pre.fund_eoa(),
    )

    state_test(
        env=Environment(),
        pre=pre,
        tx=tx,
        post={
            auth_signer: Account(
                nonce=(account_nonce + 1) if valid_authorization else account_nonce,
                code=Spec.delegation_designation(set_code_to_address)
                if valid_authorization
                else b"",
            )
            if authorization_nonce < 2**64 and account_nonce > 0
            else Account.NONEXISTENT,
            entry_address: Account(
                storage={
                    success_slot: 1,
                    return_slot: 1 if valid_authorization else 0,
                },
            ),
        },
    )

Parametrized Test Cases

The interactive table below is also available as a standalone page.

Fork All Forks Prague Osaka

Fixture Type All Fixture Types state_test blockchain_test

Test ID (Abbreviated)	account_nonce	authorization_nonce
...fork_Prague-state_test-nonce=2**64-1	18446744073709551615	18446744073709551615
...fork_Prague-state_test-nonce=2**64-2	18446744073709551614	18446744073709551614
...fork_Prague-state_test-nonce=1,account_nonce=0	0	1
...fork_Prague-state_test-nonce=0,account_nonce=1	1	0
...fork_Prague-blockchain_test_from_state_test-nonce=2**64-1	18446744073709551615	18446744073709551615
...fork_Prague-blockchain_test_from_state_test-nonce=2**64-2	18446744073709551614	18446744073709551614
...fork_Prague-blockchain_test_from_state_test-nonce=1,account_nonce=0	0	1
...fork_Prague-blockchain_test_from_state_test-nonce=0,account_nonce=1	1	0
...fork_Osaka-state_test-nonce=2**64-1	18446744073709551615	18446744073709551615
...fork_Osaka-state_test-nonce=2**64-2	18446744073709551614	18446744073709551614
...fork_Osaka-state_test-nonce=1,account_nonce=0	0	1
...fork_Osaka-state_test-nonce=0,account_nonce=1	1	0
...fork_Osaka-blockchain_test_from_state_test-nonce=2**64-1	18446744073709551615	18446744073709551615
...fork_Osaka-blockchain_test_from_state_test-nonce=2**64-2	18446744073709551614	18446744073709551614
...fork_Osaka-blockchain_test_from_state_test-nonce=1,account_nonce=0	0	1
...fork_Osaka-blockchain_test_from_state_test-nonce=0,account_nonce=1	1	0