tests/worker/thread-worker.test.js

   1 const { expect } = require('expect')
   2 const { ThreadWorker } = require('../../lib')
   3
   4 describe('Thread worker test suite', () => {
   5   let numberOfMessagesPosted = 0
   6   const postMessage = () => {
   7     ++numberOfMessagesPosted
   8   }
   9   class SpyWorker extends ThreadWorker {
  10     constructor (fn) {
  11       super(fn)
  12       this.port = { postMessage }
  13     }
  14   }
  15
  16   it('Verify worker has default maxInactiveTime', () => {
  17     const worker = new ThreadWorker(() => {})
  18     expect(worker.opts.maxInactiveTime).toStrictEqual(60000)
  19   })
  20
  21   it('Verify that handleError() method is working properly', () => {
  22     const error = new Error('Error as an error')
  23     const worker = new ThreadWorker(() => {})
  24     expect(worker.handleError(error)).toStrictEqual(error)
  25     const errorMessage = 'Error as a string'
  26     expect(worker.handleError(errorMessage)).toStrictEqual(errorMessage)
  27   })
  28
  29   it('Verify worker invokes the postMessage() method on port property', () => {
  30     const worker = new SpyWorker(() => {})
  31     worker.sendToMainWorker({ ok: 1 })
  32     expect(numberOfMessagesPosted).toBe(1)
  33   })
  34 })