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#
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import pytest

from pyfory import Fory


@pytest.mark.parametrize("xlang", [False, True])
def test_root_header_rejects_reserved_bits(xlang):
    fory = Fory(xlang=xlang)
    data = bytearray(fory.serialize(1))
    data[0] |= 0x04

    with pytest.raises(ValueError, match="Unsupported root header bitmap"):
        fory.deserialize(bytes(data))


@pytest.mark.parametrize("xlang", [False, True])
def test_root_header_rejects_xlang_mismatch(xlang):
    fory = Fory(xlang=xlang)
    data = bytearray(fory.serialize(1))
    data[0] ^= 0x01

    with pytest.raises(ValueError, match="xlang bit"):
        fory.deserialize(bytes(data))


@pytest.mark.parametrize("xlang", [False, True])
def test_root_header_oob_flag_requires_buffers(xlang):
    fory = Fory(xlang=xlang)
    data = bytearray(fory.serialize(1))
    data[0] |= 0x02

    with pytest.raises(ValueError, match="Out-of-band buffers are required"):
        fory.deserialize(bytes(data))


@pytest.mark.parametrize("xlang", [False, True])
def test_root_header_rejects_buffers_without_oob_flag(xlang):
    fory = Fory(xlang=xlang)
    data = fory.serialize(1)

    with pytest.raises(ValueError, match="Out-of-band buffers were provided"):
        fory.deserialize(data, buffers=[])