#!/usr/bin/env python3
"""Contract tests for FE-M4 GUI source inventory."""

from __future__ import annotations

import hashlib
import json
import unittest
from pathlib import Path

import generate_gui_source_inventory


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


class GuiSourceInventoryTests(unittest.TestCase):
    def test_contract(self) -> None:
        report = json.loads(REPORT.read_text(encoding="utf-8"))
        self.assertEqual(report["schema"], "gui-source-inventory-fe-m4-report.v1")
        self.assertEqual(report["task_id"], "FE-M4-GUI-01")
        self.assertEqual(report["status"], "verified")
        self.assertGreater(report["counts"]["records"], 1000)
        self.assertGreaterEqual(len(report["counts"]["families"]), 8)
        self.assertEqual(report["checks"]["source_hashes"]["status"], "verified")

    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_source_inventory.canonical(unsigned).encode()).hexdigest())


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