import hashlib
import json
import subprocess
import unittest
from pathlib import Path

import generate_rs274_closure_report


ROOT = Path(__file__).resolve().parents[1]
REPORT = ROOT / "coverage/rs274-interpreter-closure.report.json"


class Rs274ClosureReportTests(unittest.TestCase):
    def test_native_interpreter_and_report(self):
        result = subprocess.run([str(ROOT / "build-native/sim_interpreter_test")], cwd=ROOT, check=False)
        self.assertEqual(result.returncode, 0)
        report = json.loads(REPORT.read_text(encoding="utf-8"))
        self.assertEqual(report["schema"], "rs274-interpreter-closure-report.v1")
        self.assertEqual(report["task_id"], "S1-01A")
        self.assertEqual(report["status"], "verified")
        self.assertTrue(report["diagnostics"]["transactional_block"])
        unsigned = dict(report)
        self_hash = unsigned.pop("report_sha256")
        expected = hashlib.sha256(generate_rs274_closure_report.canonical(unsigned).encode("utf-8")).hexdigest()
        self.assertEqual(self_hash, expected)

    def test_required_outputs_are_hashed(self):
        report = json.loads(REPORT.read_text(encoding="utf-8"))
        paths = {item["path"] for item in report["outputs"]}
        self.assertEqual(paths, {path.as_posix() for path in generate_rs274_closure_report.OUTPUTS})


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