from pathlib import Path

import pytest

from data.loaders import load_json_file, load_question_banks
from data.question import TSQuestion


def test_load_json_file_roundtrip(fixture_bank_dir: Path):
    path = fixture_bank_dir / "PSML_questions.json"
    qs = load_json_file(path)
    assert len(qs) >= 6
    assert all(isinstance(q, TSQuestion) for q in qs)
    assert qs[0].dataset == "PSML"


def test_load_question_banks_directory(fixture_bank_dir: Path):
    pools = load_question_banks(str(fixture_bank_dir))
    for d in ("PSML", "freshretailnet", "MIMIC", "causal_chambers"):
        assert d in pools
        assert len(pools[d]) >= 1


def test_load_question_banks_rejects_non_dir():
    with pytest.raises(NotADirectoryError):
        load_question_banks("/nonexistent/path/that/is/not/a/dir")