code: def test_returns_40x_if_not_authenticated(self):
      response = client.post("/api/users/get_user")
      assert response.status_code in [401, 403]
  
file_path: dstack/src/tests/_internal/server/routers/test_users.py
imports: from unittest.mock import patch
  from uuid import UUID
  import pytest
  from fastapi.testclient import TestClient
  from sqlalchemy import select
  from sqlalchemy.ext.asyncio import AsyncSession
  from dstack._internal.core.models.users import GlobalRole
  from dstack._internal.server.main import app
  from dstack._internal.server.models import UserModel
  from dstack._internal.server.testing.common import create_user, get_auth_headers
label_desc: Use image node_id 1 for calling the TestGetUser obj's underlying member method code with example usage: obj.test_returns_40x_if_not_authenticated() without return types