if (
            isinstance(index, slice)
            and (index.start is None or index.start < 0)
            and (index.stop is None or index.stop <= 0)
            and (index.start < 0 and index.stop <=0)
        ):
            raise IndexError("Version index cannot be negative")

@pytest.mark.parametrize(
    "version, index",
    [
        ("1.2.3", 3),
        ("1.2.3", slice(3, 4)),
        ("1.2.3", 4),
        ("1.2.3", slice(4, 5)),
        ("1.2.3", 5),
        ("1.2.3", slice(5, 6)),
        ("1.2.3-rc.0", 5),
        ("1.2.3-rc.0", slice(5, 6)),
        ("1.2.3-rc.0", 6),
        ("1.2.3-rc.0", slice(6, 7)),
    ],
)
def test_version_info_should_throw_index_error(version, index):
    version_info = VersionInfo.parse(version)
    with pytest.raises(IndexError, match=r"Version part undefined"):
        version_info[index]

@pytest.mark.parametrize(
    "version, index",
    [
        ("1.2.3", -1),
        ("1.2.3", -2),
    ],
)
def test_version_info_should_throw_index_error_when_negative_index(version, index):
    version_info = VersionInfo.parse(version)
    with pytest.raises(IndexError, match=r"Version index cannot be negative"):
        version_info[index]