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

from __future__ import annotations

import hashlib
import json
import unittest
from pathlib import Path

import generate_gui_family_adapter_report


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


class GuiFamilyAdapterReportTests(unittest.TestCase):
    def test_contract(self) -> None:
        report = json.loads(REPORT.read_text(encoding="utf-8"))
        self.assertEqual(report["schema"], "gui-family-adapter-fe-m4-report.v1")
        self.assertEqual(report["task_id"], "FE-M4-GUI-04")
        self.assertEqual(report["status"], "verified")
        self.assertEqual(report["checks"]["all_families_have_descriptors"]["families"], 12)

    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(generate_gui_family_adapter_report.canonical(unsigned).encode()).hexdigest())


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