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test_invalid_log_length()

Documentation for tests/prague/eip6110_deposits/test_modified_contract.py::test_invalid_log_length@88e9fb8f.

Generate fixtures for these test cases for Osaka with:

fill -v tests/prague/eip6110_deposits/test_modified_contract.py::test_invalid_log_length --fork Osaka

Test deposit contract emitting logs with invalid log length (one byte more or less).

Source code in tests/prague/eip6110_deposits/test_modified_contract.py 
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@pytest.mark.parametrize(
    "slice_bytes",
    [
        pytest.param(
            True,
            marks=pytest.mark.pre_alloc_group(
                "deposit_log_length_short", reason="Deposit contract with shortened log data"
            ),
        ),
        pytest.param(
            False,
            marks=pytest.mark.pre_alloc_group(
                "deposit_log_length_long", reason="Deposit contract with lengthened log data"
            ),
        ),
    ],
)
@pytest.mark.exception_test
def test_invalid_log_length(
    blockchain_test: BlockchainTestFiller, pre: Alloc, slice_bytes: bool
) -> None:
    """
    Test deposit contract emitting logs with invalid log length (one byte more
    or less).
    """
    changed_log = DEFAULT_REQUEST_LOG[:-1] if slice_bytes else DEFAULT_REQUEST_LOG + b"\x00"

    bytecode = Om.MSTORE(changed_log) + Op.LOG1(
        0,
        len(changed_log),
        Spec.DEPOSIT_EVENT_SIGNATURE_HASH,
    )
    bytecode += Op.STOP

    pre[Spec.DEPOSIT_CONTRACT_ADDRESS] = Account(
        code=bytecode,
        nonce=1,
        balance=0,
    )
    sender = pre.fund_eoa()

    tx = Transaction(
        to=Spec.DEPOSIT_CONTRACT_ADDRESS,
        sender=sender,
        gas_limit=100_000,
    )

    blockchain_test(
        pre=pre,
        blocks=[
            Block(
                txs=[tx],
                exception=[
                    BlockException.INVALID_DEPOSIT_EVENT_LAYOUT,
                ],
            ),
        ],
        post={},
    )

Parametrized Test Cases

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

Test ID (Abbreviated) slice_bytes
...fork_Prague-blockchain_test-slice_bytes_True True
...fork_Prague-blockchain_test-slice_bytes_False False
...fork_Osaka-blockchain_test-slice_bytes_True True
...fork_Osaka-blockchain_test-slice_bytes_False False