#!/usr/bin/env python3
import hashlib
import json
import unittest
from pathlib import Path
import sys

sys.path.insert(0, str(Path(__file__).resolve().parent))
from generate_sim_task_report import OUTPUT, generate

ROOT = Path(__file__).resolve().parents[1]


class SimTaskReportTests(unittest.TestCase):
    def test_report(self):
        report = json.loads((ROOT / OUTPUT).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["schema"], "sim-task-report.v1")
        self.assertEqual(report["task_id"], "P1-01")
        self.assertEqual(report["implementation_status"], "verified")
        self.assertEqual(report["report_sha256"], expected)
        self.assertTrue(all(value["status"] == "passed" and value["byte_identical"] for value in report["tests"].values()))

    def test_deterministic(self):
        before = (ROOT / OUTPUT).read_bytes()
        report = generate()
        self.assertEqual(before, (ROOT / OUTPUT).read_bytes())
        self.assertEqual(report["report_sha256"], json.loads(before)["report_sha256"])


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