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test_invalid_history_contract_calls_input_size()

Documentation for tests/prague/eip2935_historical_block_hashes_from_state/test_block_hashes.py::test_invalid_history_contract_calls_input_size@49a16fac.

Generate fixtures for these test cases for Prague with:

fill -v tests/prague/eip2935_historical_block_hashes_from_state/test_block_hashes.py::test_invalid_history_contract_calls_input_size --fork Prague

Test calling the history contract with invalid input sizes.

Source code in tests/prague/eip2935_historical_block_hashes_from_state/test_block_hashes.py 
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@pytest.mark.parametrize(
    "args_size,reverts",
    [
        pytest.param(0, True, id="zero_size"),
        pytest.param(33, True, id="too_large"),
        pytest.param(31, True, id="too_small"),
    ],
)
@pytest.mark.valid_from("Prague")
def test_invalid_history_contract_calls_input_size(
    blockchain_test: BlockchainTestFiller,
    pre: Alloc,
    reverts: bool,
    args_size: int,
):
    """Test calling the history contract with invalid input sizes."""
    storage = Storage()

    return_code_slot = storage.store_next(not reverts, "history storage call result")
    returned_block_hash_slot = storage.store_next(0)

    return_offset = 64
    return_size = 32
    block_number = 0

    # Check the first block outside of the window if any
    code = (
        Op.MSTORE(0, block_number)
        + Op.SSTORE(
            return_code_slot,
            Op.CALL(
                address=Spec.HISTORY_STORAGE_ADDRESS,
                args_offset=0,
                args_size=args_size,
                ret_offset=return_offset,
                ret_size=return_size,
            ),
        )
        + Op.SSTORE(returned_block_hash_slot, Op.MLOAD(return_offset))
    )
    check_contract_address = pre.deploy_contract(code, storage=storage.canary())

    txs = [
        Transaction(
            to=check_contract_address,
            gas_limit=10_000_000,
            sender=pre.fund_eoa(),
        )
    ]
    post = {check_contract_address: Account(storage=storage)}

    blocks = [Block(txs=txs)]
    blockchain_test(
        pre=pre,
        blocks=blocks,
        post=post,
        reverts=reverts,
    )

Parametrized Test Cases

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

Test ID (Abbreviated) args_size reverts
...fork_Prague-blockchain_test-zero_size 0 True
...fork_Prague-blockchain_test-too_large 33 True
...fork_Prague-blockchain_test-too_small 31 True
...fork_Osaka-blockchain_test-zero_size 0 True
...fork_Osaka-blockchain_test-too_large 33 True
...fork_Osaka-blockchain_test-too_small 31 True