import pytest

from ocr_app.pdf import parse_page_spec


def test_page_ranges():
    assert parse_page_spec("1-2,4,6-", 7) == [0, 1, 3, 5, 6]


@pytest.mark.parametrize("value", ["0", "3-2", "1-a", "8"])
def test_invalid_page_ranges(value):
    with pytest.raises(ValueError):
        parse_page_spec(value, 7)