server/tests/utils/miscs/miscs.ts

   1 /* tslint:disable:no-unused-expression */
   2
   3 import * as chai from 'chai'
   4 import { isAbsolute, join } from 'path'
   5 import * as request from 'supertest'
   6 import * as WebTorrent from 'webtorrent'
   7 import { pathExists, readFile } from 'fs-extra'
   8 import * as ffmpeg from 'fluent-ffmpeg'
   9
  10 const expect = chai.expect
  11 let webtorrent = new WebTorrent()
  12
  13 function immutableAssign <T, U> (target: T, source: U) {
  14   return Object.assign<{}, T, U>({}, target, source)
  15 }
  16
  17   // Default interval -> 5 minutes
  18 function dateIsValid (dateString: string, interval = 300000) {
  19   const dateToCheck = new Date(dateString)
  20   const now = new Date()
  21
  22   return Math.abs(now.getTime() - dateToCheck.getTime()) <= interval
  23 }
  24
  25 function wait (milliseconds: number) {
  26   return new Promise(resolve => setTimeout(resolve, milliseconds))
  27 }
  28
  29 function webtorrentAdd (torrent: string, refreshWebTorrent = false) {
  30   if (refreshWebTorrent === true) webtorrent = new WebTorrent()
  31
  32   return new Promise<WebTorrent.Torrent>(res => webtorrent.add(torrent, res))
  33 }
  34
  35 function root () {
  36   // We are in server/tests/utils/miscs
  37   return join(__dirname, '..', '..', '..', '..')
  38 }
  39
  40 async function testImage (url: string, imageName: string, imagePath: string, extension = '.jpg') {
  41   const res = await request(url)
  42     .get(imagePath)
  43     .expect(200)
  44
  45   const body = res.body
  46
  47   const data = await readFile(join(__dirname, '..', '..', 'fixtures', imageName + extension))
  48   const minLength = body.length - ((20 * body.length) / 100)
  49   const maxLength = body.length + ((20 * body.length) / 100)
  50
  51   expect(data.length).to.be.above(minLength)
  52   expect(data.length).to.be.below(maxLength)
  53 }
  54
  55 function buildAbsoluteFixturePath (path: string, customTravisPath = false) {
  56   if (isAbsolute(path)) {
  57     return path
  58   }
  59
  60   if (customTravisPath && process.env.TRAVIS) return join(process.env.HOME, 'fixtures', path)
  61
  62   return join(__dirname, '..', '..', 'fixtures', path)
  63 }
  64
  65 async function generateHighBitrateVideo () {
  66   const tempFixturePath = buildAbsoluteFixturePath('video_high_bitrate_1080p.mp4', true)
  67
  68   const exists = await pathExists(tempFixturePath)
  69   if (!exists) {
  70
  71     // Generate a random, high bitrate video on the fly, so we don't have to include
  72     // a large file in the repo. The video needs to have a certain minimum length so
  73     // that FFmpeg properly applies bitrate limits.
  74     // https://stackoverflow.com/a/15795112
  75     return new Promise<string>(async (res, rej) => {
  76       ffmpeg()
  77         .outputOptions([ '-f rawvideo', '-video_size 1920x1080', '-i /dev/urandom' ])
  78         .outputOptions([ '-ac 2', '-f s16le', '-i /dev/urandom', '-t 10' ])
  79         .outputOptions([ '-maxrate 10M', '-bufsize 10M' ])
  80         .output(tempFixturePath)
  81         .on('error', rej)
  82         .on('end', () => res(tempFixturePath))
  83         .run()
  84     })
  85   }
  86
  87   return tempFixturePath
  88 }
  89
  90 // ---------------------------------------------------------------------------
  91
  92 export {
  93   dateIsValid,
  94   wait,
  95   webtorrentAdd,
  96   immutableAssign,
  97   testImage,
  98   buildAbsoluteFixturePath,
  99   root,
 100   generateHighBitrateVideo
 101 }