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test_init_collision_create_opcode()

Documentation for tests/paris/eip7610_create_collision/test_initcollision.py::test_init_collision_create_opcode@b314d18e.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/paris/eip7610_create_collision/test_initcollision.py::test_init_collision_create_opcode --fork Amsterdam

Test that a contract creation opcode exceptionally aborts when the target address has a non-empty storage, balance, nonce, or code.

Source code in tests/paris/eip7610_create_collision/test_initcollision.py 
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@pytest.mark.parametrize("opcode", [Op.CREATE, Op.CREATE2])
def test_init_collision_create_opcode(
    state_test: StateTestFiller,
    pre: Alloc,
    opcode: Op,
    collision_nonce: int,
    collision_balance: int,
    collision_code: bytes,
    initcode: Bytecode,
) -> None:
    """
    Test that a contract creation opcode exceptionally aborts when the target
    address has a non-empty storage, balance, nonce, or code.
    """
    assert len(initcode) <= 32
    contract_creator_code = (
        Op.MSTORE(0, Op.PUSH32(bytes(initcode).ljust(32, b"\0")))
        + Op.SSTORE(0x01, opcode(value=0, offset=0, size=len(initcode)))
        + Op.STOP
    )
    contract_creator_address = pre.deploy_contract(
        contract_creator_code,
        storage={0x01: 0x01},
    )
    created_contract_address = compute_create_address(
        address=contract_creator_address,
        nonce=1,
        salt=0,
        initcode=initcode,
        opcode=opcode,
    )

    tx = Transaction(
        sender=pre.fund_eoa(),
        to=contract_creator_address,
        data=initcode,
    )

    pre[created_contract_address] = Account(
        storage={0x01: 0x01},
        nonce=collision_nonce,
        balance=collision_balance,
        code=collision_code,
    )

    state_test(
        pre=pre,
        post={
            created_contract_address: Account(
                storage={0x01: 0x01},
            ),
            contract_creator_address: Account(storage={0x01: 0x00}),
        },
        tx=tx,
    )

Parametrized Test Cases

This test generates 6 parametrized test cases across 6 forks.