Warning
test-listen is deprecated. Please use async-listen instead.
test-listen
URLs with ephemeral ports. async/await ready.
Usage
Install it:
npm install --save-dev test-listen
Pass a http.Server to test-listen and it will return an URL in the format http://localhost:{port}.
The second parameter can optionally be a hostname to return in the URL
instead of localhost.
Useful for running HTTP server testsuites:
const http = require('http')
const listen = require('test-listen')
const srv = http.createServer((req, res) => res.end('1'))
const srv2 = http.createServer((req, res) => res.end('2'))
test('urls', async t => {
let url = await listen(srv)
t.ok(url == 'http://localhost:11401')
let url = await listen(srv2)
t.ok(url == 'http://localhost:42333')
})It also works with Express:
const http = require('http')
const express = require('express')
const listen = require('test-listen')
const srv = express()
test('urls', async t => {
let url = await listen(http.createServer(srv))
t.ok(url == 'http://localhost:11401')
})Or Koa:
const http = require('http')
const Koa = require('koa')
const listen = require('test-listen')
const srv = new Koa();
test('urls', async t => {
let url = await listen(http.createServer(srv.callback()))
t.ok(url == 'http://localhost:11401')
})Authors
- Guillermo Rauch (@rauchg) - Vercel
- Leo Lamprecht (@notquiteleo) - Vercel