Function _run_in_subprocess

tests/test_init_integration.py:262–292

Run ``code`` in a fresh Python subprocess, optionally sending it ``signal_name`` after ``signal_after_ms`` ms. Returns (returncode, stdout, stderr).

(
    code: str,
    signal_after_ms: float | None = None,
    signal_name: str = "SIGTERM",
    timeout: float = 5.0,
)

def _run_in_subprocess(
    code: str,
    signal_after_ms: float | None = None,
    signal_name: str = "SIGTERM",
    timeout: float = 5.0,
) -> tuple[int, str, str]:
    """Run ``code`` in a fresh Python subprocess, optionally sending it
    ``signal_name`` after ``signal_after_ms`` ms. Returns
    (returncode, stdout, stderr).
    """
    import signal as _signal
    env = dict(os.environ)
    env["PYTHONPATH"] = str(WORKTREE_ROOT) + os.pathsep + env.get("PYTHONPATH", "")
    proc = subprocess.Popen(
        [sys.executable, "-c", code],
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
        env=env,
    )
    if signal_after_ms is not None:
        time.sleep(signal_after_ms / 1000.0)
        try:
            proc.send_signal(getattr(_signal, signal_name))
        except ProcessLookupError:
            pass  # already exited
    try:
        out, err = proc.communicate(timeout=timeout)
    except subprocess.TimeoutExpired:
        proc.kill()
        out, err = proc.communicate()
    return proc.returncode, out.decode("utf-8", errors="replace"), err.decode("utf-8", errors="replace")


class TestSigtermPathRunsCleanups(unittest.TestCase):