import json
import unittest
from pathlib import Path


class KinematicsMappingContractTests(unittest.TestCase):
    def test_contract_records_duplicate_and_home_semantics(self):
        root = Path(__file__).resolve().parents[1]
        report = json.loads((root / "coverage/kinematics-mapping-contract.json").read_text(encoding="utf-8"))
        self.assertEqual(report["schema"], "kinematics-mapping-contract.v1")
        self.assertEqual(report["status"], "verified")
        duplicate = next(row for row in report["sample_mappings"] if row["coordinates"] == "XYYZ")
        self.assertEqual(duplicate["duplicate"]["owner"], 1)
        self.assertIn("home", report["semantics"])
        self.assertIn("enabled_limit_violation", report["error_cases"])


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