#!/usr/bin/env python3
"""Contract tests for FE-M4 GUI browser visual evidence."""

from __future__ import annotations

import hashlib
import json
import unittest
from pathlib import Path


ROOT = Path(__file__).resolve().parents[1]
REPORT = ROOT / "coverage/gui-browser-visual-fe-m4.report.json"


class GuiBrowserVisualReportTests(unittest.TestCase):
    def test_contract(self) -> None:
        report = json.loads(REPORT.read_text(encoding="utf-8"))
        self.assertEqual(report["schema"], "gui-browser-visual-fe-m4-report.v1")
        self.assertEqual(report["task_id"], "FE-M4-GUI-06")
        self.assertEqual(report["status"], "verified")
        self.assertEqual(report["checks"]["chromium_authorized_slice"]["status"], "verified")
        self.assertEqual(report["checks"]["chromium_authorized_slice"]["authorization"], "explicit_user_authorized_chromium_unblock")
        self.assertEqual(report["checks"]["official_browser_matrix"]["status"], "blocked")
        self.assertEqual(report["release_action"], "STOP_RELEASE")

    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"}
        expected = hashlib.sha256(json.dumps(unsigned, ensure_ascii=False, sort_keys=True, separators=(",", ":")).encode()).hexdigest()
        self.assertEqual(report["report_sha256"], expected)


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