"""运行离线单元测试。不会调用真实 API、访问数据库或启动服务。"""
import os
import socket
import sys
import unittest
from pathlib import Path
from unittest.mock import patch


def main():
    root = Path(__file__).resolve().parents[1]
    sys.path.insert(0, str(root))
    # 仅测试进程使用占位凭据，实际请求由网络拦截阻止。
    os.environ["DEEPSEEK_API_KEY"] = "offline-test-placeholder"
    os.environ["DASHSCOPE_API_KEY"] = "offline-test-placeholder"
    os.environ["QWEATHER_API_KEY"] = "offline-test-placeholder"
    os.environ["RUN_ONLINE_TESTS"] = "0"

    def no_network(*args, **kwargs):
        raise RuntimeError("离线测试禁止网络连接，请使用模拟对象。")

    with patch.object(socket.socket, "connect", no_network), \
         patch.object(socket.socket, "connect_ex", no_network), \
         patch.object(socket, "create_connection", no_network):
        suite = unittest.defaultTestLoader.discover(str(root / "tests"), top_level_dir=str(root))
        result = unittest.TextTestRunner(verbosity=2).run(suite)
    return 0 if result.wasSuccessful() else 1


if __name__ == "__main__":
    raise SystemExit(main())