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test_factory_deploys_contract()

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

Generate fixtures for these test cases for Amsterdam with:

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

Calling the factory with salt || initcode deploys a contract at the expected CREATE2 address and returns that address. When the call forwards a non-zero value, the deployed contract receives that balance.

Source code in tests/amsterdam/eip7997_deterministic_factory_predeploy/test_factory.py 
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@pytest.mark.parametrize(
    "forwarded_value",
    [
        pytest.param(0, id="no_value"),
        pytest.param(1, id="with_value"),
    ],
)
def test_factory_deploys_contract(
    state_test: StateTestFiller,
    pre: Alloc,
    forwarded_value: int,
) -> None:
    """
    Calling the factory with `salt || initcode` deploys a contract at the
    expected `CREATE2` address and returns that address. When the call
    forwards a non-zero value, the deployed contract receives that
    balance.
    """
    salt = 0x42
    runtime_code = Op.PUSH1(0x01) + Op.PUSH1(0x00) + Op.RETURN
    initcode = Initcode(deploy_code=runtime_code)
    expected_address = compute_create2_address(FACTORY, salt, initcode)

    storage = Storage()
    caller = pre.deploy_contract(
        Op.CALLDATACOPY(0, 0, Op.CALLDATASIZE)
        + Op.SSTORE(
            storage.store_next(1, "factory_call_success"),
            Op.CALL(
                gas=Op.GAS,
                address=FACTORY,
                value=forwarded_value,
                args_offset=0,
                args_size=Op.CALLDATASIZE,
                ret_offset=12,
                ret_size=20,
            ),
        )
        + Op.SSTORE(
            storage.store_next(expected_address, "returned_address"),
            Op.MLOAD(0),
        )
        + Op.STOP,
        balance=forwarded_value,
    )

    state_test(
        pre=pre,
        tx=Transaction(
            sender=pre.fund_eoa(),
            to=caller,
            data=Hash(salt) + bytes(initcode),
        ),
        post={
            caller: Account(storage=storage, balance=0),
            expected_address: Account(
                nonce=1,
                balance=forwarded_value,
                code=bytes(runtime_code),
            ),
        },
    )

Parametrized Test Cases

This test generates 2 parametrized test cases across 1 fork.