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test_contract_initcode()

Documentation for tests/osaka/eip7951_p256verify_precompiles/test_p256verify.py::test_contract_initcode@v5.1.0.

Generate fixtures for these test cases for Osaka with:

fill -v tests/osaka/eip7951_p256verify_precompiles/test_p256verify.py::test_contract_initcode --fork Osaka

Test P256VERIFY behavior from contract creation.

Source code in tests/osaka/eip7951_p256verify_precompiles/test_p256verify.py 
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@pytest.mark.parametrize(
    "input_data,expected_output",
    [
        pytest.param(
            Spec.H0 + Spec.R0 + Spec.S0 + Spec.X0 + Spec.Y0,
            Spec.SUCCESS_RETURN_VALUE,
            id="valid_input",
        ),
        pytest.param(
            b"\x00" * 160,
            Spec.INVALID_RETURN_VALUE,
            id="invalid_input",
        ),
    ],
)
@pytest.mark.parametrize("precompile_address", [Spec.P256VERIFY], ids=[""])
@pytest.mark.parametrize("opcode", [Op.CREATE, Op.CREATE2])
@EIPChecklist.Precompile.Test.CallContexts.Initcode.CREATE()
def test_contract_initcode(
    state_test: StateTestFiller,
    pre: Alloc,
    tx: Transaction,
    input_data: bytes,
    expected_output: bytes,
    opcode: Op,
):
    """Test P256VERIFY behavior from contract creation."""
    sender = pre.fund_eoa()

    storage = Storage()

    call_256verify_bytecode = (
        Op.CODECOPY(0, Op.SUB(Op.CODESIZE, len(input_data)), len(input_data))
        + Op.CALL(
            gas=Spec.P256VERIFY_GAS,
            address=Spec.P256VERIFY,
            value=0,
            args_offset=0,
            args_size=len(input_data),
            ret_offset=0,
            ret_size=32,
        )
        + Op.SSTORE(storage.store_next(True), Op.DUP1())
        + Op.SSTORE(storage.store_next(expected_output), Op.MLOAD(0))
        + Op.SSTORE(storage.store_next(len(expected_output)), Op.RETURNDATASIZE())
        + Op.STOP
    )
    full_initcode = call_256verify_bytecode + input_data
    total_bytecode_length = len(call_256verify_bytecode) + len(input_data)

    create_contract = (
        Op.CALLDATACOPY(offset=0, size=total_bytecode_length)
        + opcode(offset=0, size=total_bytecode_length)
        + Op.STOP
    )

    factory_contract_address = pre.deploy_contract(code=create_contract)
    contract_address = compute_create_address(
        address=factory_contract_address, nonce=1, initcode=full_initcode, opcode=opcode
    )

    tx = Transaction(
        sender=sender,
        gas_limit=200_000,
        to=factory_contract_address,
        value=0,
        data=call_256verify_bytecode + input_data,
    )

    post = {
        contract_address: {
            "storage": storage,
        }
    }

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

Parametrized Test Cases

The interactive table below is also available as a standalone page.

Test ID (Abbreviated) opcode precompile_address input_data expected_output
...fork_Osaka-state_test-opcode_CREATE--valid_input CREATE 256 bb5a52f42f9c9261ed4361f59422a1e3 0036e7c32b270c8807a419feca605023 2ba3a8be6b94d5ec80a6d9d1190a436e ffe50d85a1eee859b8cc6af9bd5c2e18 4cd60b855d442f5b3c7b11eb6c4e0ae7 525fe710fab9aa7c77a67f79e6fadd76 2927b10512bae3eddcfe467828128bad 2903269919f7086069c8c4df6c732838 c7787964eaac00e5921fb1498a60f460 6766b3d9685001558d1a974e7341513e 00000000000000000000000000000000 00000000000000000000000000000001
...fork_Osaka-state_test-opcode_CREATE--invalid_input CREATE 256 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000
...fork_Osaka-state_test-opcode_CREATE2--valid_input CREATE2 256 bb5a52f42f9c9261ed4361f59422a1e3 0036e7c32b270c8807a419feca605023 2ba3a8be6b94d5ec80a6d9d1190a436e ffe50d85a1eee859b8cc6af9bd5c2e18 4cd60b855d442f5b3c7b11eb6c4e0ae7 525fe710fab9aa7c77a67f79e6fadd76 2927b10512bae3eddcfe467828128bad 2903269919f7086069c8c4df6c732838 c7787964eaac00e5921fb1498a60f460 6766b3d9685001558d1a974e7341513e 00000000000000000000000000000000 00000000000000000000000000000001
...fork_Osaka-state_test-opcode_CREATE2--invalid_input CREATE2 256 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000
...fork_Osaka-blockchain_test_from_state_test-opcode_CREATE--valid_input CREATE 256 bb5a52f42f9c9261ed4361f59422a1e3 0036e7c32b270c8807a419feca605023 2ba3a8be6b94d5ec80a6d9d1190a436e ffe50d85a1eee859b8cc6af9bd5c2e18 4cd60b855d442f5b3c7b11eb6c4e0ae7 525fe710fab9aa7c77a67f79e6fadd76 2927b10512bae3eddcfe467828128bad 2903269919f7086069c8c4df6c732838 c7787964eaac00e5921fb1498a60f460 6766b3d9685001558d1a974e7341513e 00000000000000000000000000000000 00000000000000000000000000000001
...fork_Osaka-blockchain_test_from_state_test-opcode_CREATE--invalid_input CREATE 256 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000
...fork_Osaka-blockchain_test_from_state_test-opcode_CREATE2--valid_input CREATE2 256 bb5a52f42f9c9261ed4361f59422a1e3 0036e7c32b270c8807a419feca605023 2ba3a8be6b94d5ec80a6d9d1190a436e ffe50d85a1eee859b8cc6af9bd5c2e18 4cd60b855d442f5b3c7b11eb6c4e0ae7 525fe710fab9aa7c77a67f79e6fadd76 2927b10512bae3eddcfe467828128bad 2903269919f7086069c8c4df6c732838 c7787964eaac00e5921fb1498a60f460 6766b3d9685001558d1a974e7341513e 00000000000000000000000000000000 00000000000000000000000000000001
...fork_Osaka-blockchain_test_from_state_test-opcode_CREATE2--invalid_input CREATE2 256 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000