// REQ-USR-004: request.ts 401 统一登出回调（BR10 / D11）
import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
import MockAdapter from 'axios-mock-adapter';
import request, {
  ApiError,
  registerUnauthorizedHandler,
  HTTP_UNAUTHORIZED,
} from '../../src/api/request';

describe('request 401 统一登出回调', () => {
  let mock: MockAdapter;

  beforeEach(() => {
    mock = new MockAdapter(request);
  });

  afterEach(() => {
    mock.restore();
    // 清理已注册回调，避免跨用例污染
    registerUnauthorizedHandler(null);
  });

  it('exposes HTTP_UNAUTHORIZED constant = 401', () => {
    expect(HTTP_UNAUTHORIZED).toBe(401);
  });

  it('HTTP 401 triggers registered onUnauthorized then rejects ApiError', async () => {
    const spy = vi.fn();
    registerUnauthorizedHandler(spy);
    mock.onGet('/usr/users').reply(401, { code: 40100, message: '未授权', data: null });
    await expect(request.get('/usr/users')).rejects.toBeInstanceOf(ApiError);
    expect(spy).toHaveBeenCalledTimes(1);
  });

  it('no handler registered does not throw extra error', async () => {
    registerUnauthorizedHandler(null);
    mock.onGet('/usr/users').reply(401, { code: 40100, message: '未授权', data: null });
    await expect(request.get('/usr/users')).rejects.toBeInstanceOf(ApiError);
  });
});