test_factory_address_collision_reverts()

Documentation for tests/amsterdam/eip7997_deterministic_factory_predeploy/test_factory.py::test_factory_address_collision_reverts@2119b382.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/amsterdam/eip7997_deterministic_factory_predeploy/test_factory.py::test_factory_address_collision_reverts --fork Amsterdam

A second deployment to the same CREATE2 target reverts. CREATE2 fails when the destination already has code, returns 0, and the factory reverts with the (empty) creation-frame return data.

Source code in tests/amsterdam/eip7997_deterministic_factory_predeploy/test_factory.py

def test_factory_address_collision_reverts(
    state_test: StateTestFiller,
    pre: Alloc,
) -> None:
    """
    A second deployment to the same `CREATE2` target reverts. `CREATE2`
    fails when the destination already has code, returns 0, and the factory
    reverts with the (empty) creation-frame return data.
    """
    salt = 0x77
    runtime_code = Op.STOP
    initcode = Initcode(deploy_code=runtime_code)
    target = compute_create2_address(FACTORY, salt, initcode)

    storage = Storage()
    caller = pre.deploy_contract(
        Op.CALLDATACOPY(0, 0, Op.CALLDATASIZE)
        + Op.SSTORE(
            storage.store_next(1, "first_call_success"),
            Op.CALL(
                gas=Op.GAS,
                address=FACTORY,
                value=0,
                args_offset=0,
                args_size=Op.CALLDATASIZE,
                ret_offset=0x100,
                ret_size=32,
            ),
        )
        + Op.SSTORE(
            storage.store_next(0, "second_call_failed"),
            Op.CALL(
                gas=Op.GAS,
                address=FACTORY,
                value=0,
                args_offset=0,
                args_size=Op.CALLDATASIZE,
                ret_offset=0x100,
                ret_size=32,
            ),
        )
        + Op.STOP,
    )

    state_test(
        pre=pre,
        tx=Transaction(
            sender=pre.fund_eoa(),
            to=caller,
            data=Hash(salt) + bytes(initcode),
        ),
        post={
            caller: Account(storage=storage),
            target: Account(nonce=1, code=bytes(runtime_code)),
        },
    )

Parametrized Test Cases

This test generates 1 parametrized test case across 1 fork.