test_invalid_tx_blob_count()

Documentation for tests/cancun/eip4844_blobs/test_blob_txs.py::test_invalid_tx_blob_count@verkle@v0.0.6.

Generate fixtures for these test cases for Cancun with:

Cancun only:

fill -v tests/cancun/eip4844_blobs/test_blob_txs.py::test_invalid_tx_blob_count --fork=Cancun --evm-bin=/path/to/evm-tool-dev-version

For all forks up to and including Cancun:

fill -v tests/cancun/eip4844_blobs/test_blob_txs.py::test_invalid_tx_blob_count --until=Cancun

Reject blocks that include blob transactions with invalid blob counts:

• blob count == 0 in type 3 transaction
• blob count > MAX_BLOBS_PER_BLOCK in type 3 transaction

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

@pytest.mark.parametrize(
    "blobs_per_tx,tx_error",
    [
        ([0], TransactionException.TYPE_3_TX_ZERO_BLOBS),
        (
            [SpecHelpers.max_blobs_per_block() + 1],
            TransactionException.TYPE_3_TX_BLOB_COUNT_EXCEEDED,
        ),
    ],
    ids=["too_few_blobs", "too_many_blobs"],
)
@pytest.mark.valid_from("Cancun")
def test_invalid_tx_blob_count(
    state_test: StateTestFiller,
    state_env: Environment,
    pre: Alloc,
    txs: List[Transaction],
    header_verify: Optional[Header],
    rlp_modifier: Optional[Header],
):
    """
    Reject blocks that include blob transactions with invalid blob counts:

    - `blob count == 0` in type 3 transaction
    - `blob count > MAX_BLOBS_PER_BLOCK` in type 3 transaction
    """
    assert len(txs) == 1
    state_test(
        pre=pre,
        post={},
        tx=txs[0],
        env=state_env,
        blockchain_test_header_verify=header_verify,
        blockchain_test_rlp_modifier=rlp_modifier,
    )

Parametrized Test Cases

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

Skipped Parameters

For more concise readability, the table below does not list the following parameter values: fork, blockchain_test, state_test, state_test_only, eof_test, eof_state_test.

Test ID	blobs_per_tx	tx_error
too_few_blobs	[0]	TransactionException.TYPE_3_TX_ZERO_BLOBS
too_many_blobs	[7]	TransactionException.TYPE_3_TX_BLOB_COUNT_EXCEEDED
too_few_blobs	[0]	TransactionException.TYPE_3_TX_ZERO_BLOBS
too_many_blobs	[7]	TransactionException.TYPE_3_TX_BLOB_COUNT_EXCEEDED