#!/usr/bin/env python3
"""Tests for the S6-01 full simulation gap audit."""

from __future__ import annotations

import hashlib
import json
import sys
import tempfile
import unittest
from pathlib import Path

sys.path.insert(0, str(Path(__file__).resolve().parent))
import generate_full_linuxcnc_simulation_gap_audit


ROOT = Path(__file__).resolve().parents[1]
REPORT = ROOT / "coverage/full-linuxcnc-simulation-gap-audit.report.json"


class FullLinuxCncSimulationGapAuditTests(unittest.TestCase):
    def test_contract(self):
        report = json.loads(REPORT.read_text(encoding="utf-8"))
        self.assertEqual(report["schema"], "full-linuxcnc-simulation-gap-audit.v1")
        self.assertEqual(report["task_id"], "S6-01")
        self.assertEqual(report["status"], "verified")
        self.assertGreaterEqual(report["audit_scope"]["p0_p8_task_count"], 30)
        self.assertEqual(report["source_test_summary"]["tasks"], ["S5-01", "S5-02", "S5-03", "S5-04", "S5-05", "S5-06", "S5-07", "S5-08"])
        self.assertEqual(report["next_execution"]["task_id"], "S6-02")
        self.assertTrue(any(item["gap_id"] == "GAP-TASK-TICK-INTEGRATION" for item in report["gap_ledger"]))
        self.assertTrue(any(item["evidence_state"] == "NO_DIRECT_REPORT" for item in report["task_ledger"]["tasks"]))

    def test_self_hash(self):
        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_full_linuxcnc_simulation_gap_audit.canonical(unsigned).encode()).hexdigest())

    def test_deterministic(self):
        with tempfile.TemporaryDirectory() as directory:
            first = generate_full_linuxcnc_simulation_gap_audit.generate(ROOT, Path(directory) / "one.json")
            second = generate_full_linuxcnc_simulation_gap_audit.generate(ROOT, Path(directory) / "two.json")
            self.assertEqual(first, second)


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