test_bal_create_early_failure()

Documentation for tests/amsterdam/eip7928_block_level_access_lists/test_block_access_lists_opcodes.py::test_bal_create_early_failure@87aba1a3.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/amsterdam/eip7928_block_level_access_lists/test_block_access_lists_opcodes.py::test_bal_create_early_failure --fork Amsterdam

Test BAL with CREATE/CREATE2 failure due to insufficient endowment.

Factory (balance=50) attempts CREATE/CREATE2(value=100). Fails before nonce increment (before track_address). Distinct from collision where address IS accessed.

Expected BAL: - Alice: nonce_changes - Factory: storage_changes slot 0 (0xDEAD→0), NO nonce_changes - Contract address: MUST NOT appear (never accessed)

Source code in tests/amsterdam/eip7928_block_level_access_lists/test_block_access_lists_opcodes.py

@pytest.mark.with_all_create_opcodes
def test_bal_create_early_failure(
    pre: Alloc, blockchain_test: BlockchainTestFiller, create_opcode: Op
) -> None:
    """
    Test BAL with CREATE/CREATE2 failure due to insufficient endowment.

    Factory (balance=50) attempts CREATE/CREATE2(value=100).
    Fails before nonce increment (before track_address).
    Distinct from collision where address IS accessed.

    Expected BAL:
    - Alice: nonce_changes
    - Factory: storage_changes slot 0 (0xDEAD→0), NO nonce_changes
    - Contract address: MUST NOT appear (never accessed)
    """
    alice = pre.fund_eoa()

    factory_balance = 50
    endowment = 100

    init_code = Initcode(deploy_code=Op.STOP)
    init_code_bytes = bytes(init_code)

    factory_code = (
        Op.MSTORE(0, Op.PUSH32(init_code_bytes))
        + Op.SSTORE(
            0x00,
            create_opcode(
                value=endowment,
                offset=32 - len(init_code_bytes),
                size=len(init_code_bytes),
            ),
        )
        + Op.STOP
    )

    factory = pre.deploy_contract(
        code=factory_code,
        balance=factory_balance,
        storage={0x00: 0xDEAD},
    )

    would_be_contract_address = compute_create_address(
        address=factory,
        nonce=1,
        salt=0,
        initcode=init_code_bytes,
        opcode=create_opcode,
    )

    tx = Transaction(sender=alice, to=factory)

    block = Block(
        txs=[tx],
        expected_block_access_list=BlockAccessListExpectation(
            account_expectations={
                alice: BalAccountExpectation(
                    nonce_changes=[
                        BalNonceChange(block_access_index=1, post_nonce=1)
                    ],
                ),
                factory: BalAccountExpectation(
                    nonce_changes=[],
                    storage_changes=[
                        BalStorageSlot(
                            slot=0x00,
                            slot_changes=[
                                BalStorageChange(
                                    block_access_index=1, post_value=0
                                )
                            ],
                        )
                    ],
                ),
                would_be_contract_address: None,
            }
        ),
    )

    blockchain_test(
        pre=pre,
        blocks=[block],
        post={
            alice: Account(nonce=1),
            factory: Account(
                nonce=1, balance=factory_balance, storage={0x00: 0}
            ),
            would_be_contract_address: Account.NONEXISTENT,
        },
    )

Parametrized Test Cases

This test generates 2 parametrized test cases across 1 fork.