f044895335af397c1599faeee10f6e90d63dcf42
1 const { expect
} = require('expect')
2 const { FixedThreadPool
, PoolEvents
} = require('../../../lib')
3 const { WorkerFunctions
} = require('../../test-types')
4 const TestUtils
= require('../../test-utils')
6 describe('Fixed thread pool test suite', () => {
7 const numberOfThreads
= 6
8 const pool
= new FixedThreadPool(
10 './tests/worker-files/thread/testWorker.js',
12 errorHandler
: e
=> console
.error(e
)
15 const queuePool
= new FixedThreadPool(
17 './tests/worker-files/thread/testWorker.js',
19 enableTasksQueue
: true,
23 errorHandler
: e
=> console
.error(e
)
26 const emptyPool
= new FixedThreadPool(
28 './tests/worker-files/thread/emptyWorker.js',
29 { exitHandler
: () => console
.log('empty pool worker exited') }
31 const echoPool
= new FixedThreadPool(
33 './tests/worker-files/thread/echoWorker.js'
35 const errorPool
= new FixedThreadPool(
37 './tests/worker-files/thread/errorWorker.js',
39 errorHandler
: e
=> console
.error(e
)
42 const asyncErrorPool
= new FixedThreadPool(
44 './tests/worker-files/thread/asyncErrorWorker.js',
46 errorHandler
: e
=> console
.error(e
)
49 const asyncPool
= new FixedThreadPool(
51 './tests/worker-files/thread/asyncWorker.js'
54 after('Destroy all pools', async () => {
55 // We need to clean up the resources after our test
56 await echoPool
.destroy()
57 await asyncPool
.destroy()
58 await errorPool
.destroy()
59 await asyncErrorPool
.destroy()
60 await emptyPool
.destroy()
61 await queuePool
.destroy()
64 it('Verify that the function is executed in a worker thread', async () => {
65 let result
= await pool
.execute({
66 function: WorkerFunctions
.fibonacci
68 expect(result
).toBe(75025)
69 result
= await pool
.execute({
70 function: WorkerFunctions
.factorial
72 expect(result
).toBe(9.33262154439441e157
)
75 it('Verify that is possible to invoke the execute() method without input', async () => {
76 const result
= await pool
.execute()
77 expect(result
).toBe(false)
80 it("Verify that 'busy' event is emitted", async () => {
82 pool
.emitter
.on(PoolEvents
.busy
, () => ++poolBusy
)
83 for (let i
= 0; i
< numberOfThreads
* 2; i
++) {
86 // The `busy` event is triggered when the number of submitted tasks at once reach the number of fixed pool workers.
87 // So in total numberOfThreads + 1 times for a loop submitting up to numberOfThreads * 2 tasks to the fixed pool.
88 expect(poolBusy
).toBe(numberOfThreads
+ 1)
91 it('Verify that tasks queuing is working', async () => {
92 const promises
= new Set()
93 const maxMultiplier
= 2
94 for (let i
= 0; i
< numberOfThreads
* maxMultiplier
; i
++) {
95 promises
.add(queuePool
.execute())
97 expect(promises
.size
).toBe(numberOfThreads
* maxMultiplier
)
98 for (const workerNode
of queuePool
.workerNodes
) {
99 expect(workerNode
.usage
.tasks
.executing
).toBeLessThanOrEqual(
100 queuePool
.opts
.tasksQueueOptions
.concurrency
102 expect(workerNode
.usage
.tasks
.executed
).toBe(0)
103 expect(workerNode
.usage
.tasks
.queued
).toBeGreaterThan(0)
104 expect(workerNode
.usage
.tasks
.maxQueued
).toBeGreaterThan(0)
106 expect(queuePool
.info
.executingTasks
).toBe(numberOfThreads
)
107 expect(queuePool
.info
.queuedTasks
).toBe(
108 numberOfThreads
* maxMultiplier
- numberOfThreads
110 expect(queuePool
.info
.maxQueuedTasks
).toBe(
111 numberOfThreads
* maxMultiplier
- numberOfThreads
113 await Promise
.all(promises
)
114 for (const workerNode
of queuePool
.workerNodes
) {
115 expect(workerNode
.usage
.tasks
.executing
).toBe(0)
116 expect(workerNode
.usage
.tasks
.executed
).toBeGreaterThan(0)
117 expect(workerNode
.usage
.tasks
.executed
).toBeLessThanOrEqual(maxMultiplier
)
118 expect(workerNode
.usage
.tasks
.queued
).toBe(0)
119 expect(workerNode
.usage
.tasks
.maxQueued
).toBe(1)
123 it('Verify that is possible to have a worker that return undefined', async () => {
124 const result
= await emptyPool
.execute()
125 expect(result
).toBeUndefined()
128 it('Verify that data are sent to the worker correctly', async () => {
129 const data
= { f
: 10 }
130 const result
= await echoPool
.execute(data
)
131 expect(result
).toStrictEqual(data
)
134 it('Verify that error handling is working properly:sync', async () => {
135 const data
= { f
: 10 }
137 errorPool
.emitter
.on(PoolEvents
.taskError
, e
=> {
142 await errorPool
.execute(data
)
146 expect(inError
).toBeDefined()
147 expect(inError
).toBeInstanceOf(Error
)
148 expect(inError
.message
).toBeDefined()
149 expect(typeof inError
.message
=== 'string').toBe(true)
150 expect(inError
.message
).toContain(
151 'Error Message from ThreadWorker on worker'
153 expect(taskError
.data
).toStrictEqual(data
)
155 errorPool
.workerNodes
.some(
156 workerNode
=> workerNode
.usage
.tasks
.failed
=== 1
161 it('Verify that error handling is working properly:async', async () => {
162 const data
= { f
: 10 }
164 asyncErrorPool
.emitter
.on(PoolEvents
.taskError
, e
=> {
169 await asyncErrorPool
.execute(data
)
173 expect(inError
).toBeDefined()
174 expect(inError
).toBeInstanceOf(Error
)
175 expect(inError
.message
).toBeDefined()
176 expect(typeof inError
.message
=== 'string').toBe(true)
177 expect(inError
.message
).toContain(
178 'Error Message from ThreadWorker:async on worker'
180 expect(taskError
.data
).toStrictEqual(data
)
182 asyncErrorPool
.workerNodes
.some(
183 workerNode
=> workerNode
.usage
.tasks
.failed
=== 1
188 it('Verify that async function is working properly', async () => {
189 const data
= { f
: 10 }
190 const startTime
= performance
.now()
191 const result
= await asyncPool
.execute(data
)
192 const usedTime
= performance
.now() - startTime
193 expect(result
).toStrictEqual(data
)
194 expect(usedTime
).toBeGreaterThanOrEqual(2000)
197 it('Shutdown test', async () => {
198 const exitPromise
= TestUtils
.waitWorkerEvents(
204 const numberOfExitEvents
= await exitPromise
205 expect(numberOfExitEvents
).toBe(numberOfThreads
)
208 it('Verify that thread pool options are checked', async () => {
209 const workerFilePath
= './tests/worker-files/thread/testWorker.js'
210 let pool1
= new FixedThreadPool(numberOfThreads
, workerFilePath
)
211 expect(pool1
.opts
.workerOptions
).toBeUndefined()
212 await pool1
.destroy()
213 pool1
= new FixedThreadPool(numberOfThreads
, workerFilePath
, {
215 env
: { TEST
: 'test' },
219 expect(pool1
.opts
.workerOptions
).toStrictEqual({
220 env
: { TEST
: 'test' },
223 await pool1
.destroy()
226 it('Should work even without opts in input', async () => {
227 const pool1
= new FixedThreadPool(
229 './tests/worker-files/thread/testWorker.js'
231 const res
= await pool1
.execute()
232 expect(res
).toBe(false)
233 // We need to clean up the resources after our test
234 await pool1
.destroy()
237 it('Verify that a pool with zero worker fails', async () => {
239 () => new FixedThreadPool(0, './tests/worker-files/thread/testWorker.js')
240 ).toThrowError('Cannot instantiate a fixed pool with no worker')