test_block_at_rlp_size_limit_boundary()

Documentation for tests/osaka/eip7934_block_rlp_limit/test_max_block_rlp_size.py::test_block_at_rlp_size_limit_boundary@20373115.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/osaka/eip7934_block_rlp_limit/test_max_block_rlp_size.py::test_block_at_rlp_size_limit_boundary --fork Amsterdam

Test the block rlp size limit.

• At the limit - 1 byte, the block is valid
• At the limit, the block is valid
• At the limit + 1 byte, the block is invalid

Source code in tests/osaka/eip7934_block_rlp_limit/test_max_block_rlp_size.py

@EIPChecklist.BlockLevelConstraint.Test.Boundary.Under()
@EIPChecklist.BlockLevelConstraint.Test.Boundary.Exact()
@EIPChecklist.BlockLevelConstraint.Test.Boundary.Over()
@pytest.mark.parametrize(
    "delta",
    [
        pytest.param(
            -1, id="max_rlp_size_minus_1_byte", marks=pytest.mark.verify_sync
        ),
        pytest.param(0, id="max_rlp_size", marks=pytest.mark.verify_sync),
        pytest.param(
            1, id="max_rlp_size_plus_1_byte", marks=pytest.mark.exception_test
        ),
    ],
)
@pytest.mark.valid_from("Osaka")
def test_block_at_rlp_size_limit_boundary(
    blockchain_test: BlockchainTestFiller,
    pre: Alloc,
    post: Alloc,
    env: Environment,
    sender: EOA,
    fork: Fork,
    block_size_limit: int,
    delta: int,
) -> None:
    """
    Test the block rlp size limit.

    - At the limit - 1 byte, the block is valid
    - At the limit, the block is valid
    - At the limit + 1 byte, the block is invalid
    """
    transactions, extra_data_len = exact_size_transactions(
        sender,
        fork,
        pre,
        env.gas_limit,
    )

    block = Block(
        txs=transactions,
        exception=BlockException.RLP_BLOCK_LIMIT_EXCEEDED
        if delta > 0
        else None,
    )

    target_extra_data_len = max(extra_data_len + delta, 0)
    block.extra_data = Bytes(b"\x00" * target_extra_data_len)

    block.timestamp = ZeroPaddedHexNumber(HEADER_TIMESTAMP)
    blockchain_test(
        genesis_environment=env,
        pre=pre,
        post=post,
        blocks=[block],
    )

Parametrized Test Cases

This test generates 3 parametrized test cases across 2 forks.