test_blob_type_tx_pre_fork()

Documentation for tests/cancun/eip4844_blobs/test_blob_txs.py::test_blob_type_tx_pre_fork@20373115.

Generate fixtures for these test cases for Cancun with:

fill -v tests/cancun/eip4844_blobs/test_blob_txs.py::test_blob_type_tx_pre_fork --fork Cancun

Reject blocks with blob type transactions before Cancun fork.

Blocks sent by NewPayloadV2 (Shanghai) that contain blob type transactions, furthermore blobs field within NewPayloadV2 method must be computed as INVALID, due to an invalid block hash.

Source code in tests/cancun/eip4844_blobs/test_blob_txs.py

@pytest.mark.parametrize(
    [
        "blobs_per_tx",
        "parent_excess_blobs",
        "tx_max_fee_per_blob_gas",
        "tx_error",
        "block_error",
    ],
    [
        (
            [0],
            None,
            1,
            [
                TransactionException.TYPE_3_TX_PRE_FORK,
                TransactionException.TYPE_3_TX_ZERO_BLOBS,
            ],
            [
                TransactionException.TYPE_3_TX_PRE_FORK,
                TransactionException.TYPE_3_TX_ZERO_BLOBS,
            ],
        ),
        (
            [1],
            None,
            1,
            TransactionException.TYPE_3_TX_PRE_FORK,
            [
                TransactionException.TYPE_3_TX_PRE_FORK,
                BlockException.INVALID_VERSIONED_HASHES,
            ],
        ),
    ],
    ids=["no_blob_tx", "one_blob_tx"],
)
@pytest.mark.exception_test
@pytest.mark.valid_at_transition_to("Cancun")
@pytest.mark.slow()
def test_blob_type_tx_pre_fork(
    state_test: StateTestFiller,
    pre: Alloc,
    txs: List[Transaction],
    block_error: Optional[TransactionException | BlockException],
) -> None:
    """
    Reject blocks with blob type transactions before Cancun fork.

    Blocks sent by NewPayloadV2 (Shanghai) that contain blob type transactions,
    furthermore blobs field within NewPayloadV2 method must be computed as
    INVALID, due to an invalid block hash.
    """
    assert len(txs) == 1
    state_test(
        pre=pre,
        post={},
        tx=txs[0],
        env=Environment(),  # `env` fixture has blob fields
        block_exception=block_error,
    )

Parametrized Test Cases

This test generates 2 parametrized test cases across 1 fork.