#!/usr/bin/env python3
"""Contract tests for selected-case release verification evidence."""

from __future__ import annotations

import hashlib
import json
import unittest
from pathlib import Path


ROOT = Path(__file__).resolve().parents[1]
REPORT = ROOT / "coverage/release-verification.report.json"


class ReleaseVerificationTests(unittest.TestCase):
    def test_all_required_commands_passed(self) -> None:
        report = json.loads(REPORT.read_text(encoding="utf-8"))
        self.assertEqual(report["schema"], "release-verification.v1")
        self.assertEqual(report["status"], "verified")
        self.assertEqual(report["release_action"], "ALLOW_RELEASE")
        self.assertEqual(report["passed_command_count"], report["required_command_count"])
        self.assertTrue(all(item["status"] == "passed" for item in report["commands"]))

    def test_self_hash(self) -> None:
        report = json.loads(REPORT.read_text(encoding="utf-8"))
        unsigned = {key: value for key, value in report.items() if key != "report_sha256"}
        self.assertEqual(report["report_sha256"], hashlib.sha256(json.dumps(unsigned, ensure_ascii=False, sort_keys=True, separators=(",", ":")).encode("utf-8")).hexdigest())


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