使用 404 路由和动态路由的超测试测试快速应用程序时开玩笑超时答案

【问题标题】：Jest timesout when testing express app using supertest for 404 route and dynamic routes too使用 404 路由和动态路由的超测试测试快速应用程序时开玩笑超时
【发布时间】：2022-09-27 14:30:15
【问题描述】：

我正在尝试构建一个 npm 包，它是一个快速应用程序，您可以在其中传递和应用程序将使用的路由数组。

我遇到的问题是，当我尝试测试 404 路由或传入参数的数组中的其中一个路由时，开玩笑超时/失败。当我测试默认的/health 路由时，测试通过了。

这是回购https://github.com/byverdu/http-server

// app.mjs
import express from \'express\'
import { healthRouter } from \'./routes/health.mjs\'

function expressApp ({ routes } = {}) {

  const app = express();

  app.use(\'/health\', healthRouter);

  for (const { path, handler, method } of routes) {
    // Register all the handlers
    app[method](path, handler)
  }

  app.use((req, res) => {
    res.status(404).send(`No handler found for ${req.url}`)
  })

  return app;
}

export { expressApp }

// server.mjs
import { expressApp } from \'./app.mjs\'

function httpServer ({ port, routes } = {}) {
  const PORT = port || 3000
  const server = expressApp({ routes })

  return server.listen(PORT, () => {
    console.log(`App running on: ${PORT}`)
  })
}

// usage
const routes = [
  {
    method: \'get\',
    path: \'/some-path\',
    handler: (req, res) => {

      res.send(\'ok\')
    }
  }
]

httpServer({routes})

// Tests
import request from \'supertest\'
import { expressApp } from \'../src/app.mjs\'

describe(\'App\', () => {
  it(\'should have a /health route by default\', async () => { // Test passes
    const app = expressApp({ routes: [] })
    const resp = await request(app).get(\'/health\')

    expect(resp.ok).toEqual(true)
    expect(resp.type).toEqual(\'text/html\')
    expect(resp.text).toEqual(\'ok\')
  })

  it(\'should handle 404 requests\', async () => { // Test timeouts
    const app = expressApp({ routes: [] })
    const resp = await request(app).get(\'/notFound\')

    expect(resp.status).toEqual(404)
    expect(resp.type).toEqual(\'text/html\')
    expect(resp.text).toEqual(\'No handler found for /notFound\')
  })

  it(\'should register all routes passed\', async () => { // Test timeouts
    const routes = [{ method: \'get\', handler: (req, res) => { res.json({ value: 100 }) }, path: \'/someRoute\' }]
    const server = expressApp({ routes })

    const resp = await request(server).get(\'/someRoute\').send()

    expect(resp.ok).toEqual(true)
    expect(resp.type).toEqual(\'application/json\')
    expect(resp.body).toEqual({ value: 100 })
  })
}

问题是我在终端上得到 2 个不同的输出，这取决于我是否在 wath 模式下运行 jest

我试图增加开玩笑配置的超时时间，但也不起作用

\"scripts\": {
    \"test:dev\": \"node --experimental-vm-modules node_modules/jest/bin/jest.js --watch --detectOpenHandles\",
    \"test\": \"node --experimental-vm-modules node_modules/jest/bin/jest.js --collect-coverage --detectOpenHandles --forceExit\"
  },
\"jest\": {
  \"testRegex\": \"(/__tests__/.*|(\\\\.|/)(test|spec))\\\\.(mjs?|js?)$\",
  \"transform\": {},
  \"moduleFileExtensions\": [
    \"mjs\",
    \"js\"
  ],
  \"testTimeout\": 30000 // no luck with it
}

任何想法将不胜感激......谢谢

标签： node.js express jestjs supertest

【解决方案1】：

尝试像这样更改您的路线声明：

for (const { path, handler, method } of routes) {
    // Register all the handlers
    switch (method.toLowerCase()) {
        case 'get':
            app.get(path, handler);
            break;
        case 'post':
            ...
    }
  }

  app.use('*', (req, res) => {
    res.status(404).send(`No handler found for ${req.url}`)
  })

【讨论】：