"""Run Node contract tests for frontend helpers (``*.test.mjs``)."""
from __future__ import annotations

import shutil
import subprocess
import sys
from pathlib import Path

import pytest

REPO_ROOT = Path(__file__).resolve().parent.parent


@pytest.mark.skipif(shutil.which("node") is None, reason="Node.js not installed")
def test_frontend_contracts_via_node() -> None:
    tests = sorted((REPO_ROOT / "frontend").glob("*.test.mjs"))
    for t in tests:
        assert t.is_file(), t
    proc = subprocess.run(
        [shutil.which("node") or "node", "--test", *[str(t) for t in tests]],
        cwd=str(REPO_ROOT),
        capture_output=True,
        text=True,
        timeout=60,
    )
    if proc.returncode != 0:
        sys.stderr.write(proc.stdout or "")
        sys.stderr.write(proc.stderr or "")
    assert proc.returncode == 0, "node --test frontend/*.test.mjs failed"