import unittest
from pathlib import Path

import generate_interpreter_report


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


class InterpreterRuntimeTests(unittest.TestCase):
    def test_native_interpreter_binary(self):
        binary = ROOT / "build-native/sim_interpreter_test"
        if not binary.is_file():
            self.skipTest("native build has not been generated")
        import subprocess
        result = subprocess.run([str(binary)], cwd=ROOT, check=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        self.assertEqual(result.returncode, 0, result.stderr.decode(errors="replace"))

    def test_wasm_exports_interpreter_api(self):
        module = ROOT / "build-wasm/linuxcnc-sim-core.js"
        if not module.is_file():
            self.skipTest("WASM build has not been generated")
        text = module.read_text(encoding="utf-8")
        for symbol in ("sim_interpreter_init", "sim_interpreter_execute", "sim_interpreter_canonical", "sim_interpreter_state_hash"):
            self.assertIn(symbol, text)

    def test_report_is_deterministic_and_complete(self):
        report = __import__("json").loads((ROOT / "coverage/interpreter-runtime.report.json").read_text(encoding="utf-8"))
        self.assertEqual(report["schema"], "interpreter-runtime-report.v1")
        self.assertGreater(report["inputs"]["file_count"], 0)
        self.assertEqual(report["outputs"]["file_count"], len(generate_interpreter_report.OUTPUTS))
        self.assertTrue(report["canonical"]["byte_identical"])
        self.assertTrue(report["canonical"]["state_hash_identical"])


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