from __future__ import annotations

import os
import subprocess
import sys
from pathlib import Path


def test_main_runs_headless() -> None:
    repo_root = Path(__file__).resolve().parents[1]
    env = os.environ.copy()
    env["AI_SIDEBAR_HEADLESS"] = "1"

    result = subprocess.run(
        [sys.executable, "main.py"],
        cwd=repo_root,
        env=env,
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
        text=True,
        check=False,
    )

    assert result.returncode == 0
    assert "Headless mode enabled" in result.stdout