test_sufficient_balance_blob_tx_pre_fund_tx()

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

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/cancun/eip4844_blobs/test_blob_txs.py::test_sufficient_balance_blob_tx_pre_fund_tx --fork Amsterdam

Check that transaction is accepted when user can exactly afford the blob gas specified (and max_fee_per_gas would be enough for current block) because a funding transaction is prepended in the same block.

• Transactions with max fee equal or higher than current block base fee
• Transactions with and without priority fee
• Transactions with and without value
• Transactions with and without calldata
• Transactions with max fee per blob gas lower or higher than the priority fee

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

@pytest.mark.parametrize_by_fork(
    "blobs_per_tx",
    lambda fork: [
        pytest.param([1], id="single_blob"),
        pytest.param([fork.max_blobs_per_tx()], id="max_blobs"),
    ],
)
@pytest.mark.parametrize(
    "tx_access_list",
    [[], [AccessList(address=100, storage_keys=[100, 200])]],
    ids=["no_access_list", "access_list"],
)
@pytest.mark.parametrize("tx_max_fee_per_gas", [7, 14])
@pytest.mark.parametrize("tx_max_priority_fee_per_gas", [0, 7])
@pytest.mark.parametrize("tx_value", [0, 1])
@pytest.mark.parametrize(
    "tx_calldata",
    [b"", b"\x00", b"\x01"],
    ids=["no_calldata", "single_zero_calldata", "single_one_calldata"],
)
@pytest.mark.parametrize("tx_max_fee_per_blob_gas_multiplier", [1, 100, 10000])
@pytest.mark.parametrize("sender_initial_balance", [0])
@pytest.mark.valid_from("Cancun")
def test_sufficient_balance_blob_tx_pre_fund_tx(
    blockchain_test: BlockchainTestFiller,
    total_account_minimum_balance: int,
    sender: EOA,
    env: Environment,
    pre: Alloc,
    txs: List[Transaction],
    header_verify: Optional[Header],
) -> None:
    """
    Check that transaction is accepted when user can exactly afford the blob
    gas specified (and max_fee_per_gas would be enough for current block)
    because a funding transaction is prepended in the same block.

    - Transactions with max fee equal or higher than current block base fee
    - Transactions with and without priority fee
    - Transactions with and without value
    - Transactions with and without calldata
    - Transactions with max fee per blob gas lower or higher than the priority
        fee
    """
    pre_funding_sender = pre.fund_eoa(
        amount=(21_000 * 100) + total_account_minimum_balance
    )
    txs = [
        Transaction(
            sender=pre_funding_sender,
            to=sender,
            value=total_account_minimum_balance,
            gas_limit=21_000,
        )
    ] + txs
    blockchain_test(
        pre=pre,
        post={},
        blocks=[
            Block(
                txs=txs,
                header_verify=header_verify,
            )
        ],
        genesis_environment=env,
    )

Parametrized Test Cases

This test generates 288 parametrized test cases across 4 forks.