rocket.chat.mqtt/node_modules/aedes-packet/test.js

It's a MQTT Server, using redis to scale horizontally.

'use strict'

var test = require('tape')
var Packet = require('./')

test('Packet defaults', function (t) {
  var instance = new Packet({})
  t.equal(instance.cmd, 'publish')
  t.equal(instance.brokerId, undefined)
  t.equal(instance.brokerCounter, 0)
  t.equal(instance.topic, undefined)
  t.deepEqual(instance.payload, new Buffer(0))
  t.equal(instance.qos, 0)
  t.equal(instance.retain, false)
  t.equal(instance.messageId, 0)
  t.end()
})

test('Packet copies over most data', function (t) {
  var original = {
    cmd: 'pubrel',
    brokerId: 'A56c',
    brokerCounter: 42,
    topic: 'hello',
    payload: 'world',
    qos: 2,
    retain: true,
    messageId: 24
  }
  var instance = new Packet(original)
  var expected = {
    cmd: 'pubrel',
    brokerId: 'A56c',
    brokerCounter: 42,
    topic: 'hello',
    payload: 'world',
    qos: 2,
    retain: true,
    messageId: 0 // this is different
  }

  t.deepEqual(instance, expected)
  t.end()
})

test('Packet fills in broker data', function (t) {
  var broker = {
    id: 'A56c',
    counter: 41
  }
  var original = {
    cmd: 'pubrel',
    topic: 'hello',
    payload: 'world',
    qos: 2,
    retain: true,
    messageId: 24
  }
  var instance = new Packet(original, broker)
  var expected = {
    cmd: 'pubrel',
    brokerId: 'A56c',
    brokerCounter: 42,
    topic: 'hello',
    payload: 'world',
    qos: 2,
    retain: true,
    messageId: 0 // this is different
  }

  t.deepEqual(instance, expected)
  t.end()
})