import json
import subprocess
import unittest
from pathlib import Path

import generate_motion_report


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


class MotionRuntimeTests(unittest.TestCase):
    def test_native_motion_binary(self):
        binary = ROOT / "build-native/sim_motion_queue_test"
        if not binary.is_file():
            self.skipTest("native build has not been generated")
        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_motion_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_motion_init", "sim_motion_enqueue", "sim_motion_step", "sim_motion_set_feed_override", "sim_motion_state_hash", "sim_motion_canonical"):
            self.assertIn(symbol, text)

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


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