first commit

libraries/fetch-utils/test/unit/helpers/TestServer.js

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+const express = require('express')
+const bodyParser = require('body-parser')
+const { EventEmitter } = require('node:events')
+const http = require('node:http')
+const https = require('node:https')
+const { promisify } = require('node:util')
+
+class TestServer {
+  constructor() {
+    this.app = express()
+    this.events = new EventEmitter()
+
+    this.app.use(bodyParser.json())
+    this.app.use((req, res, next) => {
+      this.events.emit('request-received')
+      this.lastReq = req
+      next()
+    })
+
+    // Plain text endpoints
+
+    this.app.get('/hello', (req, res) => {
+      res.send('hello')
+    })
+
+    this.largePayload = 'x'.repeat(16 * 1024 * 1024)
+    this.app.get('/large', (req, res) => {
+      res.send(this.largePayload)
+    })
+
+    this.app.get('/204', (req, res) => {
+      res.status(204).end()
+    })
+
+    this.app.get('/empty', (req, res) => {
+      res.end()
+    })
+
+    this.app.get('/500', (req, res) => {
+      res.sendStatus(500)
+    })
+
+    this.app.post('/sink', (req, res) => {
+      req.on('data', () => {})
+      req.on('end', () => {
+        res.status(204).end()
+      })
+    })
+
+    // JSON endpoints
+
+    this.app.get('/json/hello', (req, res) => {
+      res.json({ msg: 'hello' })
+    })
+
+    this.app.post('/json/add', (req, res) => {
+      const { a, b } = req.body
+      res.json({ sum: a + b })
+    })
+
+    this.app.get('/json/500', (req, res) => {
+      res.status(500).json({ error: 'Internal server error' })
+    })
+
+    this.app.get('/json/basic-auth', (req, res) => {
+      const expectedAuth =
+        'Basic ' + Buffer.from('user:pass').toString('base64')
+      if (req.headers.authorization === expectedAuth) {
+        res.json({ key: 'verysecret' })
+      } else {
+        res.status(401).json({ error: 'unauthorized' })
+      }
+    })
+
+    this.app.post('/json/ignore-request', (req, res) => {
+      res.json({ msg: 'hello' })
+    })
+
+    // Never returns
+
+    this.app.get('/hang', (req, res) => {})
+    this.app.post('/hang', (req, res) => {})
+
+    // Redirect
+
+    this.app.get('/redirect/1', (req, res) => {
+      res.redirect('/redirect/2')
+    })
+    this.app.get('/redirect/2', (req, res) => {
+      res.send('body after redirect')
+    })
+    this.app.get('/redirect/empty-location', (req, res) => {
+      res.sendStatus(302)
+    })
+  }
+
+  start(port, httpsPort, httpsOptions) {
+    const startHttp = new Promise((resolve, reject) => {
+      this.server = http.createServer(this.app).listen(port, err => {
+        if (err) {
+          reject(err)
+        } else {
+          resolve()
+        }
+      })
+    })
+    const startHttps = new Promise((resolve, reject) => {
+      this.https_server = https
+        .createServer(httpsOptions, this.app)
+        .listen(httpsPort, err => {
+          if (err) {
+            reject(err)
+          } else {
+            resolve()
+          }
+        })
+    })
+    return Promise.all([startHttp, startHttps])
+  }
+
+  stop() {
+    const stopHttp = promisify(this.server.close).bind(this.server)
+    const stopHttps = promisify(this.https_server.close).bind(this.https_server)
+    this.server.closeAllConnections()
+    this.https_server.closeAllConnections()
+    return Promise.all([stopHttp(), stopHttps()])
+  }
+}
+
+module.exports = { TestServer }