#!/usr/bin/env python3
"""Unit tests for UnsolvedMed relations graph integrity (Section 6.12 & Section 10)."""

import json
import unittest
from pathlib import Path

ROOT = Path(__file__).resolve().parent.parent


class TestRelations(unittest.TestCase):
    def test_relations_resolve_and_no_self_loops(self):
        bundle = json.loads((ROOT / "dataset.json").read_text(encoding="utf-8"))
        all_ids = {r["id"] for r in bundle["problems"]}

        with (ROOT / "relations" / "relations.jsonl").open("r", encoding="utf-8") as f:
            rels = [json.loads(line) for line in f if line.strip()]

        self.assertGreaterEqual(len(rels), 5000)
        for r in rels:
            self.assertIn(r["subject_id"], all_ids)
            if r["object_id"].startswith("UMED-"):
                self.assertIn(r["object_id"], all_ids)
            self.assertNotEqual(r["subject_id"], r["object_id"])


if __name__ == "__main__":
    unittest.main()