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Test Legacy Eof Creates

Documentation for tests/prague/eip7692_eof_v1/eip7620_eof_create/test_legacy_eof_creates.py.

Generate fixtures for these test cases for Prague with:

Prague only: 

fill -v tests/prague/eip7692_eof_v1/eip7620_eof_create/test_legacy_eof_creates.py --fork=Prague --evm-bin=/path/to/evm-tool-dev-version
For all forks up to and including Prague: 
fill -v tests/prague/eip7692_eof_v1/eip7620_eof_create/test_legacy_eof_creates.py --until=Prague --evm-bin=/path/to/evm-tool-dev-version

Test interactions between CREATE, CREATE2, and EOFCREATE

test_cross_version_creates_fail(state_test, pre, legacy_create_opcode, deploy_code)

Verifies that CREATE and CREATE2 cannot create EOF contracts

Source code in tests/prague/eip7692_eof_v1/eip7620_eof_create/test_legacy_eof_creates.py 
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@pytest.mark.parametrize(
    "legacy_create_opcode",
    [
        pytest.param(Op.CREATE, id="CREATE"),
        pytest.param(Op.CREATE2, id="CREATE2"),
    ],
)
@pytest.mark.parametrize(
    "deploy_code",
    [
        pytest.param(smallest_initcode_subcontainer, id="deploy_eof_initcontainer"),
        pytest.param(smallest_runtime_subcontainer, id="deploy_eof_container"),
    ],
)
def test_cross_version_creates_fail(
    state_test: StateTestFiller,
    pre: Alloc,
    legacy_create_opcode: Opcodes,
    deploy_code: Container,
):
    """
    Verifies that CREATE and CREATE2 cannot create EOF contracts
    """
    env = Environment()
    salt_param = [0] if legacy_create_opcode == Op.CREATE2 else []
    sender = pre.fund_eoa()
    contract_address = pre.deploy_contract(
        code=Op.CALLDATACOPY(0, 0, Op.CALLDATASIZE)
        + Op.SSTORE(slot_create_address, legacy_create_opcode(0, 0, Op.CALLDATASIZE, *salt_param))
        + Op.SSTORE(slot_code_worked, value_code_worked)
        + Op.STOP
    )

    # Storage in 0 should be empty as the create/create2 should fail,
    # and 1 in 1 to show execution continued and did not halt
    post = {
        contract_address: Account(
            storage={
                slot_create_address: value_create_failed,
                slot_code_worked: value_code_worked,
            }
        )
    }
    tx = Transaction(
        to=contract_address,
        gas_limit=10_000_000,
        gas_price=10,
        protected=False,
        sender=sender,
        data=deploy_code,
    )

    state_test(
        env=env,
        pre=pre,
        post=post,
        tx=tx,
    )

test_legacy_initcode_eof_contract_fails(state_test, pre, legacy_create_opcode, deploy_code)

Verifies that legacy initcode cannot create EOF

Source code in tests/prague/eip7692_eof_v1/eip7620_eof_create/test_legacy_eof_creates.py 
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@pytest.mark.parametrize(
    "legacy_create_opcode",
    [
        pytest.param(Op.CREATE, id="CREATE"),
        pytest.param(Op.CREATE2, id="CREATE2"),
    ],
)
@pytest.mark.parametrize(
    "deploy_code",
    [
        pytest.param(smallest_initcode_subcontainer, id="deploy_eof_initcontainer"),
        pytest.param(smallest_runtime_subcontainer, id="deploy_eof_container"),
    ],
)
def test_legacy_initcode_eof_contract_fails(
    state_test: StateTestFiller,
    pre: Alloc,
    legacy_create_opcode: Opcodes,
    deploy_code: Container,
):
    """
    Verifies that legacy initcode cannot create EOF
    """
    env = Environment()
    init_code = LegacyInitcode(deploy_code=deploy_code)
    salt_param = [0] if legacy_create_opcode == Op.CREATE2 else []
    factory_code = (
        Op.CALLDATACOPY(0, 0, Op.CALLDATASIZE)
        + Op.SSTORE(slot_create_address, legacy_create_opcode(0, 0, Op.CALLDATASIZE, *salt_param))
        + Op.SSTORE(slot_code_worked, value_code_worked)
    )

    sender = pre.fund_eoa()
    contract_address = pre.deploy_contract(code=factory_code)

    # Storage in 0 should be empty as the final CREATE filed
    # and 1 in 1 to show execution continued and did not halt
    post = {
        contract_address: Account(
            storage={slot_create_address: value_create_failed, slot_code_worked: value_code_worked}
        )
    }
    tx = Transaction(
        to=contract_address,
        gas_limit=10_000_000,
        gas_price=10,
        protected=False,
        data=init_code,
        sender=sender,
    )

    state_test(env=env, pre=pre, post=post, tx=tx)