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test_returndataload_handling()

Documentation for tests/osaka/eip7692_eof_v1/eip7069_extcall/test_returndataload.py::test_returndataload_handling@49a16fac.

Generate fixtures for these test cases for Osaka with:

fill -v tests/osaka/eip7692_eof_v1/eip7069_extcall/test_returndataload.py::test_returndataload_handling --fork Osaka

Much simpler than returndatacopy, no memory or boosted call. Returner is called and results are stored in storage slot, which is asserted for expected values. The parameters offset and return data are configured to test boundary conditions.

Source code in tests/osaka/eip7692_eof_v1/eip7069_extcall/test_returndataload.py
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@pytest.mark.parametrize(
    "opcode",
    [
        Op.EXTCALL,
        Op.EXTDELEGATECALL,
        Op.EXTSTATICCALL,
    ],
)
@pytest.mark.parametrize(
    "return_data",
    [
        b"",
        b"\x10" * 0x10,
        b"\x20" * 0x20,
        b"\x30" * 0x30,
    ],
    ids=lambda x: "len_%x" % len(x),
)
@pytest.mark.parametrize(
    "offset",
    [
        0,
        0x10,
        0x20,
        0x30,
    ],
    ids=lambda x: "offset_%x" % x,
)
def test_returndataload_handling(
    state_test: StateTestFiller,
    pre: Alloc,
    opcode: Op,
    return_data: bytes,
    offset: int,
):
    """
    Much simpler than returndatacopy, no memory or boosted call.  Returner is called
    and results are stored in storage slot, which is asserted for expected values.
    The parameters offset and return data are configured to test boundary conditions.
    """
    env = Environment()

    slot_result_start = 0x1000

    sender = pre.fund_eoa()
    address_returner = pre.deploy_contract(
        Container(
            sections=[
                Section.Code(
                    code=Op.DATACOPY(0, 0, Op.DATASIZE) + Op.RETURN(0, Op.DATASIZE),
                ),
                Section.Data(data=return_data),
            ]
        )
    )
    address_entry_point = pre.deploy_contract(
        Container(
            sections=[
                Section.Code(
                    code=opcode(address=address_returner)
                    + Op.SSTORE(slot_result_start, Op.RETURNDATALOAD(offset))
                    + Op.SSTORE(slot_code_worked, value_code_worked)
                    + Op.STOP,
                )
            ]
        )
    )

    result = [0] * 0x20
    extent = 0x20 - max(0, 0x20 + offset - len(return_data))
    if extent > 0 and len(return_data) > 0:
        result[0:extent] = [return_data[0]] * extent
    post = {
        address_entry_point: Account(
            storage={
                slot_code_worked: value_code_worked,
                slot_result_start: bytes(result),
            }
        )
    }

    tx = Transaction(to=address_entry_point, gas_limit=2_000_000, sender=sender)

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

Parametrized Test Cases

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

Test ID (Abbreviated) offset return_data opcode
...fork_Osaka-blockchain_test-offset_0-len_0-opcode_EXTCALL 0 EXTCALL
...fork_Osaka-blockchain_test-offset_0-len_0-opcode_EXTDELEGATECALL 0 EXTDELEGATECALL
...fork_Osaka-blockchain_test-offset_0-len_0-opcode_EXTSTATICCALL 0 EXTSTATICCALL
...fork_Osaka-blockchain_test-offset_0-len_10-opcode_EXTCALL 0 10101010101010101010101010101010 EXTCALL
...fork_Osaka-blockchain_test-offset_0-len_10-opcode_EXTDELEGATECALL 0 10101010101010101010101010101010 EXTDELEGATECALL
...fork_Osaka-blockchain_test-offset_0-len_10-opcode_EXTSTATICCALL 0 10101010101010101010101010101010 EXTSTATICCALL
...fork_Osaka-blockchain_test-offset_0-len_20-opcode_EXTCALL 0 20202020202020202020202020202020 20202020202020202020202020202020 EXTCALL
...fork_Osaka-blockchain_test-offset_0-len_20-opcode_EXTDELEGATECALL 0 20202020202020202020202020202020 20202020202020202020202020202020 EXTDELEGATECALL
...fork_Osaka-blockchain_test-offset_0-len_20-opcode_EXTSTATICCALL 0 20202020202020202020202020202020 20202020202020202020202020202020 EXTSTATICCALL
...fork_Osaka-blockchain_test-offset_0-len_30-opcode_EXTCALL 0 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTCALL
...fork_Osaka-blockchain_test-offset_0-len_30-opcode_EXTDELEGATECALL 0 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTDELEGATECALL
...fork_Osaka-blockchain_test-offset_0-len_30-opcode_EXTSTATICCALL 0 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTSTATICCALL
...fork_Osaka-blockchain_test-offset_10-len_0-opcode_EXTCALL 16 EXTCALL
...fork_Osaka-blockchain_test-offset_10-len_0-opcode_EXTDELEGATECALL 16 EXTDELEGATECALL
...fork_Osaka-blockchain_test-offset_10-len_0-opcode_EXTSTATICCALL 16 EXTSTATICCALL
...fork_Osaka-blockchain_test-offset_10-len_10-opcode_EXTCALL 16 10101010101010101010101010101010 EXTCALL
...fork_Osaka-blockchain_test-offset_10-len_10-opcode_EXTDELEGATECALL 16 10101010101010101010101010101010 EXTDELEGATECALL
...fork_Osaka-blockchain_test-offset_10-len_10-opcode_EXTSTATICCALL 16 10101010101010101010101010101010 EXTSTATICCALL
...fork_Osaka-blockchain_test-offset_10-len_20-opcode_EXTCALL 16 20202020202020202020202020202020 20202020202020202020202020202020 EXTCALL
...fork_Osaka-blockchain_test-offset_10-len_20-opcode_EXTDELEGATECALL 16 20202020202020202020202020202020 20202020202020202020202020202020 EXTDELEGATECALL
...fork_Osaka-blockchain_test-offset_10-len_20-opcode_EXTSTATICCALL 16 20202020202020202020202020202020 20202020202020202020202020202020 EXTSTATICCALL
...fork_Osaka-blockchain_test-offset_10-len_30-opcode_EXTCALL 16 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTCALL
...fork_Osaka-blockchain_test-offset_10-len_30-opcode_EXTDELEGATECALL 16 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTDELEGATECALL
...fork_Osaka-blockchain_test-offset_10-len_30-opcode_EXTSTATICCALL 16 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTSTATICCALL
...fork_Osaka-blockchain_test-offset_20-len_0-opcode_EXTCALL 32 EXTCALL
...fork_Osaka-blockchain_test-offset_20-len_0-opcode_EXTDELEGATECALL 32 EXTDELEGATECALL
...fork_Osaka-blockchain_test-offset_20-len_0-opcode_EXTSTATICCALL 32 EXTSTATICCALL
...fork_Osaka-blockchain_test-offset_20-len_10-opcode_EXTCALL 32 10101010101010101010101010101010 EXTCALL
...fork_Osaka-blockchain_test-offset_20-len_10-opcode_EXTDELEGATECALL 32 10101010101010101010101010101010 EXTDELEGATECALL
...fork_Osaka-blockchain_test-offset_20-len_10-opcode_EXTSTATICCALL 32 10101010101010101010101010101010 EXTSTATICCALL
...fork_Osaka-blockchain_test-offset_20-len_20-opcode_EXTCALL 32 20202020202020202020202020202020 20202020202020202020202020202020 EXTCALL
...fork_Osaka-blockchain_test-offset_20-len_20-opcode_EXTDELEGATECALL 32 20202020202020202020202020202020 20202020202020202020202020202020 EXTDELEGATECALL
...fork_Osaka-blockchain_test-offset_20-len_20-opcode_EXTSTATICCALL 32 20202020202020202020202020202020 20202020202020202020202020202020 EXTSTATICCALL
...fork_Osaka-blockchain_test-offset_20-len_30-opcode_EXTCALL 32 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTCALL
...fork_Osaka-blockchain_test-offset_20-len_30-opcode_EXTDELEGATECALL 32 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTDELEGATECALL
...fork_Osaka-blockchain_test-offset_20-len_30-opcode_EXTSTATICCALL 32 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTSTATICCALL
...fork_Osaka-blockchain_test-offset_30-len_0-opcode_EXTCALL 48 EXTCALL
...fork_Osaka-blockchain_test-offset_30-len_0-opcode_EXTDELEGATECALL 48 EXTDELEGATECALL
...fork_Osaka-blockchain_test-offset_30-len_0-opcode_EXTSTATICCALL 48 EXTSTATICCALL
...fork_Osaka-blockchain_test-offset_30-len_10-opcode_EXTCALL 48 10101010101010101010101010101010 EXTCALL
...fork_Osaka-blockchain_test-offset_30-len_10-opcode_EXTDELEGATECALL 48 10101010101010101010101010101010 EXTDELEGATECALL
...fork_Osaka-blockchain_test-offset_30-len_10-opcode_EXTSTATICCALL 48 10101010101010101010101010101010 EXTSTATICCALL
...fork_Osaka-blockchain_test-offset_30-len_20-opcode_EXTCALL 48 20202020202020202020202020202020 20202020202020202020202020202020 EXTCALL
...fork_Osaka-blockchain_test-offset_30-len_20-opcode_EXTDELEGATECALL 48 20202020202020202020202020202020 20202020202020202020202020202020 EXTDELEGATECALL
...fork_Osaka-blockchain_test-offset_30-len_20-opcode_EXTSTATICCALL 48 20202020202020202020202020202020 20202020202020202020202020202020 EXTSTATICCALL
...fork_Osaka-blockchain_test-offset_30-len_30-opcode_EXTCALL 48 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTCALL
...fork_Osaka-blockchain_test-offset_30-len_30-opcode_EXTDELEGATECALL 48 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTDELEGATECALL
...fork_Osaka-blockchain_test-offset_30-len_30-opcode_EXTSTATICCALL 48 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTSTATICCALL
...fork_Osaka-state_test-offset_0-len_0-opcode_EXTCALL 0 EXTCALL
...fork_Osaka-state_test-offset_0-len_0-opcode_EXTDELEGATECALL 0 EXTDELEGATECALL
...fork_Osaka-state_test-offset_0-len_0-opcode_EXTSTATICCALL 0 EXTSTATICCALL
...fork_Osaka-state_test-offset_0-len_10-opcode_EXTCALL 0 10101010101010101010101010101010 EXTCALL
...fork_Osaka-state_test-offset_0-len_10-opcode_EXTDELEGATECALL 0 10101010101010101010101010101010 EXTDELEGATECALL
...fork_Osaka-state_test-offset_0-len_10-opcode_EXTSTATICCALL 0 10101010101010101010101010101010 EXTSTATICCALL
...fork_Osaka-state_test-offset_0-len_20-opcode_EXTCALL 0 20202020202020202020202020202020 20202020202020202020202020202020 EXTCALL
...fork_Osaka-state_test-offset_0-len_20-opcode_EXTDELEGATECALL 0 20202020202020202020202020202020 20202020202020202020202020202020 EXTDELEGATECALL
...fork_Osaka-state_test-offset_0-len_20-opcode_EXTSTATICCALL 0 20202020202020202020202020202020 20202020202020202020202020202020 EXTSTATICCALL
...fork_Osaka-state_test-offset_0-len_30-opcode_EXTCALL 0 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTCALL
...fork_Osaka-state_test-offset_0-len_30-opcode_EXTDELEGATECALL 0 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTDELEGATECALL
...fork_Osaka-state_test-offset_0-len_30-opcode_EXTSTATICCALL 0 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTSTATICCALL
...fork_Osaka-state_test-offset_10-len_0-opcode_EXTCALL 16 EXTCALL
...fork_Osaka-state_test-offset_10-len_0-opcode_EXTDELEGATECALL 16 EXTDELEGATECALL
...fork_Osaka-state_test-offset_10-len_0-opcode_EXTSTATICCALL 16 EXTSTATICCALL
...fork_Osaka-state_test-offset_10-len_10-opcode_EXTCALL 16 10101010101010101010101010101010 EXTCALL
...fork_Osaka-state_test-offset_10-len_10-opcode_EXTDELEGATECALL 16 10101010101010101010101010101010 EXTDELEGATECALL
...fork_Osaka-state_test-offset_10-len_10-opcode_EXTSTATICCALL 16 10101010101010101010101010101010 EXTSTATICCALL
...fork_Osaka-state_test-offset_10-len_20-opcode_EXTCALL 16 20202020202020202020202020202020 20202020202020202020202020202020 EXTCALL
...fork_Osaka-state_test-offset_10-len_20-opcode_EXTDELEGATECALL 16 20202020202020202020202020202020 20202020202020202020202020202020 EXTDELEGATECALL
...fork_Osaka-state_test-offset_10-len_20-opcode_EXTSTATICCALL 16 20202020202020202020202020202020 20202020202020202020202020202020 EXTSTATICCALL
...fork_Osaka-state_test-offset_10-len_30-opcode_EXTCALL 16 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTCALL
...fork_Osaka-state_test-offset_10-len_30-opcode_EXTDELEGATECALL 16 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTDELEGATECALL
...fork_Osaka-state_test-offset_10-len_30-opcode_EXTSTATICCALL 16 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTSTATICCALL
...fork_Osaka-state_test-offset_20-len_0-opcode_EXTCALL 32 EXTCALL
...fork_Osaka-state_test-offset_20-len_0-opcode_EXTDELEGATECALL 32 EXTDELEGATECALL
...fork_Osaka-state_test-offset_20-len_0-opcode_EXTSTATICCALL 32 EXTSTATICCALL
...fork_Osaka-state_test-offset_20-len_10-opcode_EXTCALL 32 10101010101010101010101010101010 EXTCALL
...fork_Osaka-state_test-offset_20-len_10-opcode_EXTDELEGATECALL 32 10101010101010101010101010101010 EXTDELEGATECALL
...fork_Osaka-state_test-offset_20-len_10-opcode_EXTSTATICCALL 32 10101010101010101010101010101010 EXTSTATICCALL
...fork_Osaka-state_test-offset_20-len_20-opcode_EXTCALL 32 20202020202020202020202020202020 20202020202020202020202020202020 EXTCALL
...fork_Osaka-state_test-offset_20-len_20-opcode_EXTDELEGATECALL 32 20202020202020202020202020202020 20202020202020202020202020202020 EXTDELEGATECALL
...fork_Osaka-state_test-offset_20-len_20-opcode_EXTSTATICCALL 32 20202020202020202020202020202020 20202020202020202020202020202020 EXTSTATICCALL
...fork_Osaka-state_test-offset_20-len_30-opcode_EXTCALL 32 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTCALL
...fork_Osaka-state_test-offset_20-len_30-opcode_EXTDELEGATECALL 32 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTDELEGATECALL
...fork_Osaka-state_test-offset_20-len_30-opcode_EXTSTATICCALL 32 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTSTATICCALL
...fork_Osaka-state_test-offset_30-len_0-opcode_EXTCALL 48 EXTCALL
...fork_Osaka-state_test-offset_30-len_0-opcode_EXTDELEGATECALL 48 EXTDELEGATECALL
...fork_Osaka-state_test-offset_30-len_0-opcode_EXTSTATICCALL 48 EXTSTATICCALL
...fork_Osaka-state_test-offset_30-len_10-opcode_EXTCALL 48 10101010101010101010101010101010 EXTCALL
...fork_Osaka-state_test-offset_30-len_10-opcode_EXTDELEGATECALL 48 10101010101010101010101010101010 EXTDELEGATECALL
...fork_Osaka-state_test-offset_30-len_10-opcode_EXTSTATICCALL 48 10101010101010101010101010101010 EXTSTATICCALL
...fork_Osaka-state_test-offset_30-len_20-opcode_EXTCALL 48 20202020202020202020202020202020 20202020202020202020202020202020 EXTCALL
...fork_Osaka-state_test-offset_30-len_20-opcode_EXTDELEGATECALL 48 20202020202020202020202020202020 20202020202020202020202020202020 EXTDELEGATECALL
...fork_Osaka-state_test-offset_30-len_20-opcode_EXTSTATICCALL 48 20202020202020202020202020202020 20202020202020202020202020202020 EXTSTATICCALL
...fork_Osaka-state_test-offset_30-len_30-opcode_EXTCALL 48 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTCALL
...fork_Osaka-state_test-offset_30-len_30-opcode_EXTDELEGATECALL 48 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTDELEGATECALL
...fork_Osaka-state_test-offset_30-len_30-opcode_EXTSTATICCALL 48 30303030303030303030303030303030 30303030303030303030303030303030 30303030303030303030303030303030 EXTSTATICCALL