1 import { expect } from 'expect'
2 import { restore, stub } from 'sinon'
4 import { ClusterWorker } from '../../lib/index.cjs'
5 import { DEFAULT_TASK_NAME } from '../../lib/utils.cjs'
7 describe('Cluster worker test suite', () => {
12 it('Verify that sync kill handler is called when worker is killed', () => {
13 const worker = new ClusterWorker(() => {}, {
14 killHandler: stub().returns()
17 worker.getMainWorker = stub().returns({
19 send: stub().returns()
21 worker.handleKillMessage()
22 expect(worker.getMainWorker.calledTwice).toBe(true)
23 expect(worker.getMainWorker().send.calledOnce).toBe(true)
24 expect(worker.opts.killHandler.calledOnce).toBe(true)
27 it('Verify that removeTaskFunction() is working', () => {
34 const worker = new ClusterWorker({ fn1, fn2 })
35 worker.getMainWorker = stub().returns({
37 send: stub().returns()
39 expect(worker.removeTaskFunction(0, fn1)).toStrictEqual({
41 error: new TypeError('name parameter is not a string')
43 expect(worker.removeTaskFunction('', fn1)).toStrictEqual({
45 error: new TypeError('name parameter is an empty string')
47 expect(worker.taskFunctions.get(DEFAULT_TASK_NAME)).toBeInstanceOf(Function)
48 expect(worker.taskFunctions.get('fn1')).toBeInstanceOf(Function)
49 expect(worker.taskFunctions.get('fn2')).toBeInstanceOf(Function)
50 expect(worker.taskFunctions.size).toBe(3)
51 expect(worker.taskFunctions.get(DEFAULT_TASK_NAME)).toStrictEqual(
52 worker.taskFunctions.get('fn1')
54 expect(worker.removeTaskFunction(DEFAULT_TASK_NAME)).toStrictEqual({
57 'Cannot remove the task function with the default reserved name'
60 expect(worker.removeTaskFunction('fn1')).toStrictEqual({
63 'Cannot remove the task function used as the default task function'
66 worker.removeTaskFunction('fn2')
67 expect(worker.taskFunctions.get(DEFAULT_TASK_NAME)).toBeInstanceOf(Function)
68 expect(worker.taskFunctions.get('fn1')).toBeInstanceOf(Function)
69 expect(worker.taskFunctions.get('fn2')).toBeUndefined()
70 expect(worker.taskFunctions.size).toBe(2)
71 expect(worker.getMainWorker.calledTwice).toBe(true)
72 expect(worker.getMainWorker().send.calledOnce).toBe(true)
75 it('Verify that handleError() method is working properly', () => {
76 const error = new Error('Error as an error')
77 const worker = new ClusterWorker(() => {})
78 expect(worker.handleError(error)).not.toBeInstanceOf(Error)
79 expect(worker.handleError(error)).toStrictEqual(error.message)
80 const errorMessage = 'Error as a string'
81 expect(worker.handleError(errorMessage)).toStrictEqual(errorMessage)
84 it('Verify that sendToMainWorker() method invokes the getMainWorker() and send() methods', () => {
85 const worker = new ClusterWorker(() => {})
86 worker.getMainWorker = stub().returns({
87 send: stub().returns()
89 worker.sendToMainWorker({ ok: 1 })
90 expect(worker.getMainWorker.calledTwice).toBe(true)
91 expect(worker.getMainWorker().send.calledOnce).toBe(true)