import sys
from pathlib import Path

sys.path.insert(0, str(Path(__file__).resolve().parents[1]))

from app.grading import grade_item, normalize_answer


def test_multi_choice_normalize():
    assert normalize_answer("A,B,C,D", 288) == "ABCD"
    assert normalize_answer("ABCD", 288) == "ABCD"


def test_single_grade():
    ok, sc = grade_item("A", "A", None, 272, 1.0)
    assert ok and sc == 1.0
    ok, sc = grade_item("B", "A", None, 272, 1.0)
    assert not ok and sc == 0.0