我想开始在我的项目中使用Jest进行测试，但是我很难让这个测试工作。当我运行它时，我抛出了这个错误。

thrown: "Exceeded timeout of 5000 ms for a test.
    Use jest.setTimeout(newTimeout) to increase the timeout value, if this is a long-running test."

       5 |
       6 |
    >  7 | test('Create a new user', async()=>{
         | ^
       8 |
       9 |    await request(app).post('/').send({
      10 |         name:'alex',

      at Object.test (tests/user.test.js:7:1)

测试文件中的代码如下所示

const app = require('../app');
const usersRoute = require('../routes/users');
const request = require('supertest');


test('Create a new user', async()=>{

   await request(app).post('/').send({
        name:'alex',
        email:"a@gmail.com",
        password:"1234567",
        role:"admin"
    }).expect(201);

})

我的app.js文件如下所示

const express = require("express");
const colors = require('colors');
const errorHandler = require('./middleware/error');
const morgan = require('morgan');
const localdb = require('./db/bootcampDB');
const fileupload = require('express-fileupload');
const path = require('path');
const cookieParser = require('cookie-parser');

//ROUTES

const reviews = require('./routes/reviews');
const auth = require('./routes/auth')
const bootcamps = require('./routes/bootcamps');
const courses = require('./routes/courses')
const users = require('./routes/users');

const app = express();

app.use(express.json())

if(process.env.NODE_ENV === 'development'){
    app.use(morgan('dev'));
}

localdb();

app.use(fileupload())

//SET static folder
app.use(express.static(path.join(__dirname, 'public')));

app.use('/api/v1/bootcamps', bootcamps);
app.use('/api/v1/courses', courses);
app.use('/api/v1/auth', auth);
app.use('/api/v1/users', users);
app.use('/api/v1/reviews', reviews);

app.use(cookieParser);
app.use(errorHandler)

module.exports = app;

server.js文件

const app = require('./app');

const port = process.env.PORT || 4000

const server = app.listen(port, ()=>{
    console.log(`Server running in ${process.env.NODE_ENV} mode on port ${port}`.yellow.bold);
})

process.on('unhandledRejection',(err, promise)=>{
    console.log(`Error: ${err.message}`.red);
    
    //Close server
    server.close(()=>{
        process.exit(1)
    })
})

这个特定的测试需要通过“/api/v1/users”路径，如下所示

router.route('/').get(advancedResults(User), getUsers).post(createUsers);

这行代码位于名为uses.js的文件中，该文件位于名为routes的文件夹中。
用户. js文件

const express = require('express');
const {getUsers,getSingleUsers,createUsers, deleteUsers, updateUsers} = require('../controllers/users');
const User = require('../models/user');
const router = express.Router({mergeParams:true});

const {protect, authorize} = require('../middleware/auth')
const advancedResults = require('../middleware/advancedResults');

router.use(protect);
router.use( authorize('admin'))

router.route('/').get(advancedResults(User), getUsers).post(createUsers);

router.route('/:id').get(getSingleUsers).put(updateUsers).delete(deleteUsers);

module.exports = router;

方法本身位于controllers文件夹中名为user.js的文件中。

// @desc   Create user
// @route  POST /api/v1/auth/users
// @access Private/Admin

exports.createUsers = asynHandler(async(req, res, next)=> {
    const user = await User.create(req.body)
     
    res.status(201).json({success:true, data: user})
});

我所做的一件事就是改变传递给请求的内容，例如，如果我传入'/api/v1/users'，我没有得到定时错误，我得到了这个错误

expected 201 "Created", got 404 "Not Found"

      12 |         password:"1234567",
      13 |         role:"admin"
    > 14 |     }).expect(201);
         |        ^
      15 |
      16 | })
      17 |

      at Object.expect (tests/user.test.js:14:8)
      ----
      at Test._assertStatus (node_modules/supertest/lib/test.js:252:14)
      at node_modules/supertest/lib/test.js:308:13
      at Test._assertFunction (node_modules/supertest/lib/test.js:285:13)
      at Test.assert (node_modules/supertest/lib/test.js:164:23)
      at localAssert (node_modules/supertest/lib/test.js:120:14)
      at node_modules/supertest/lib/test.js:125:7
      at Test.fn [as callback] (node_modules/superagent/src/node/index.js:924:3)
      at IncomingMessage.callback (node_modules/superagent/src/node/index.js:1153:18)

这让我更加困惑，因为我以为我告诉程序创建数据，而不是找到它。如果有人能帮助我理解Jest和这里发生的事情，我将非常感激。
谢谢