import hashlib
import json
import unittest
from pathlib import Path

import generate_linuxcnc_source_test_matrix

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


class LinuxCncSourceTestMatrixTests(unittest.TestCase):
    def test_contract(self):
        report = json.loads((ROOT / "coverage/linuxcnc-source-test-s5.report.json").read_text(encoding="utf-8"))
        self.assertEqual(report["schema"], "linuxcnc-source-test-matrix.v1")
        self.assertEqual(report["task_id"], "S5-01")
        self.assertEqual(report["status"], "verified")
        self.assertGreaterEqual(report["counts"]["test_entries"], 70)
        self.assertEqual(report["counts"]["unit_suites"], 2)
        self.assertEqual(report["counts"]["matrix_entrypoints"], 233)
        self.assertIn("PURE_REGRESSION", report["counts"]["adapter_status"])
        self.assertIn("HOST_EXCLUDED", report["counts"]["adapter_status"])

    def test_runner_semantics(self):
        report = json.loads((ROOT / "coverage/linuxcnc-source-test-s5.report.json").read_text(encoding="utf-8"))
        self.assertIn("expected byte compare", report["runner"]["semantics"])
        self.assertIn("checkresult exit status", report["runner"]["semantics"])

    def test_self_hash(self):
        report = json.loads((ROOT / "coverage/linuxcnc-source-test-s5.report.json").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["report_sha256"], expected)

    def test_deterministic(self):
        first = ROOT / "coverage/.linuxcnc-source-test-s5-one.json"
        second = ROOT / "coverage/.linuxcnc-source-test-s5-two.json"
        try:
            self.assertEqual(generate_linuxcnc_source_test_matrix.generate(first), generate_linuxcnc_source_test_matrix.generate(second))
        finally:
            first.unlink(missing_ok=True)
            second.unlink(missing_ok=True)


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