const { FixedThreadPool, PoolEvents } = require('../../../lib')
const { TaskFunctions } = require('../../test-types')
const { waitPoolEvents, waitWorkerEvents } = require('../../test-utils')
+const { DEFAULT_TASK_NAME } = require('../../../lib/utils')
describe('Fixed thread pool test suite', () => {
const numberOfThreads = 6
numberOfThreads,
'./tests/worker-files/thread/testWorker.js',
{
- errorHandler: (e) => console.error(e)
+ errorHandler: e => console.error(e)
}
)
const queuePool = new FixedThreadPool(
tasksQueueOptions: {
concurrency: tasksConcurrency
},
- errorHandler: (e) => console.error(e)
+ errorHandler: e => console.error(e)
}
)
const emptyPool = new FixedThreadPool(
numberOfThreads,
'./tests/worker-files/thread/errorWorker.js',
{
- errorHandler: (e) => console.error(e)
+ errorHandler: e => console.error(e)
}
)
const asyncErrorPool = new FixedThreadPool(
numberOfThreads,
'./tests/worker-files/thread/asyncErrorWorker.js',
{
- errorHandler: (e) => console.error(e)
+ errorHandler: e => console.error(e)
}
)
const asyncPool = new FixedThreadPool(
})
it("Verify that 'ready' event is emitted", async () => {
- const pool1 = new FixedThreadPool(
+ const pool = new FixedThreadPool(
numberOfThreads,
'./tests/worker-files/thread/testWorker.js',
{
- errorHandler: (e) => console.error(e)
+ errorHandler: e => console.error(e)
}
)
+ expect(pool.emitter.eventNames()).toStrictEqual([])
let poolReady = 0
- pool1.emitter.on(PoolEvents.ready, () => ++poolReady)
- await waitPoolEvents(pool1, PoolEvents.ready, 1)
+ pool.emitter.on(PoolEvents.ready, () => ++poolReady)
+ await waitPoolEvents(pool, PoolEvents.ready, 1)
+ expect(pool.emitter.eventNames()).toStrictEqual([PoolEvents.ready])
expect(poolReady).toBe(1)
+ await pool.destroy()
})
it("Verify that 'busy' event is emitted", async () => {
const promises = new Set()
+ expect(pool.emitter.eventNames()).toStrictEqual([])
let poolBusy = 0
pool.emitter.on(PoolEvents.busy, () => ++poolBusy)
+ expect(pool.emitter.eventNames()).toStrictEqual([PoolEvents.busy])
for (let i = 0; i < numberOfThreads * 2; i++) {
promises.add(pool.execute())
}
expect(workerNode.usage.tasks.maxQueued).toBe(
maxMultiplier - queuePool.opts.tasksQueueOptions.concurrency
)
+ expect(workerNode.usage.tasks.stolen).toBe(0)
}
+ expect(queuePool.info.executedTasks).toBe(0)
expect(queuePool.info.executingTasks).toBe(
numberOfThreads * queuePool.opts.tasksQueueOptions.concurrency
)
(maxMultiplier - queuePool.opts.tasksQueueOptions.concurrency)
)
expect(queuePool.info.backPressure).toBe(false)
+ expect(queuePool.info.stolenTasks).toBe(0)
await Promise.all(promises)
for (const workerNode of queuePool.workerNodes) {
- expect(workerNode.usage.tasks.executing).toBe(0)
+ expect(workerNode.usage.tasks.executing).toBeGreaterThanOrEqual(0)
+ expect(workerNode.usage.tasks.executing).toBeLessThanOrEqual(
+ numberOfThreads * maxMultiplier
+ )
expect(workerNode.usage.tasks.executed).toBe(maxMultiplier)
expect(workerNode.usage.tasks.queued).toBe(0)
expect(workerNode.usage.tasks.maxQueued).toBe(
maxMultiplier - queuePool.opts.tasksQueueOptions.concurrency
)
+ expect(workerNode.usage.tasks.stolen).toBeGreaterThanOrEqual(0)
+ expect(workerNode.usage.tasks.stolen).toBeLessThanOrEqual(
+ numberOfThreads * maxMultiplier
+ )
}
+ expect(queuePool.info.executedTasks).toBe(numberOfThreads * maxMultiplier)
+ expect(queuePool.info.backPressure).toBe(false)
+ expect(queuePool.info.stolenTasks).toBeGreaterThanOrEqual(0)
+ expect(queuePool.info.stolenTasks).toBeLessThanOrEqual(
+ numberOfThreads * maxMultiplier
+ )
})
it('Verify that is possible to have a worker that return undefined', async () => {
it('Verify that error handling is working properly:sync', async () => {
const data = { f: 10 }
+ expect(errorPool.emitter.eventNames()).toStrictEqual([])
let taskError
- errorPool.emitter.on(PoolEvents.taskError, (e) => {
+ errorPool.emitter.on(PoolEvents.taskError, e => {
taskError = e
})
+ expect(errorPool.emitter.eventNames()).toStrictEqual([PoolEvents.taskError])
let inError
try {
await errorPool.execute(data)
expect(typeof inError.message === 'string').toBe(true)
expect(inError.message).toBe('Error Message from ThreadWorker')
expect(taskError).toStrictEqual({
- name: 'default',
+ name: DEFAULT_TASK_NAME,
message: new Error('Error Message from ThreadWorker'),
data
})
expect(
errorPool.workerNodes.some(
- (workerNode) => workerNode.usage.tasks.failed === 1
+ workerNode => workerNode.usage.tasks.failed === 1
)
).toBe(true)
})
it('Verify that error handling is working properly:async', async () => {
const data = { f: 10 }
+ expect(asyncErrorPool.emitter.eventNames()).toStrictEqual([])
let taskError
- asyncErrorPool.emitter.on(PoolEvents.taskError, (e) => {
+ asyncErrorPool.emitter.on(PoolEvents.taskError, e => {
taskError = e
})
+ expect(asyncErrorPool.emitter.eventNames()).toStrictEqual([
+ PoolEvents.taskError
+ ])
let inError
try {
await asyncErrorPool.execute(data)
expect(typeof inError.message === 'string').toBe(true)
expect(inError.message).toBe('Error Message from ThreadWorker:async')
expect(taskError).toStrictEqual({
- name: 'default',
+ name: DEFAULT_TASK_NAME,
message: new Error('Error Message from ThreadWorker:async'),
data
})
expect(
asyncErrorPool.workerNodes.some(
- (workerNode) => workerNode.usage.tasks.failed === 1
+ workerNode => workerNode.usage.tasks.failed === 1
)
).toBe(true)
})
it('Shutdown test', async () => {
const exitPromise = waitWorkerEvents(pool, 'exit', numberOfThreads)
+ expect(pool.emitter.eventNames()).toStrictEqual([PoolEvents.busy])
let poolDestroy = 0
pool.emitter.on(PoolEvents.destroy, () => ++poolDestroy)
+ expect(pool.emitter.eventNames()).toStrictEqual([
+ PoolEvents.busy,
+ PoolEvents.destroy
+ ])
await pool.destroy()
const numberOfExitEvents = await exitPromise
+ expect(pool.started).toBe(false)
+ expect(pool.workerNodes.length).toBe(0)
expect(numberOfExitEvents).toBe(numberOfThreads)
expect(poolDestroy).toBe(1)
})
it('Verify that thread pool options are checked', async () => {
const workerFilePath = './tests/worker-files/thread/testWorker.js'
- let pool1 = new FixedThreadPool(numberOfThreads, workerFilePath)
- expect(pool1.opts.workerOptions).toBeUndefined()
- await pool1.destroy()
- pool1 = new FixedThreadPool(numberOfThreads, workerFilePath, {
+ let pool = new FixedThreadPool(numberOfThreads, workerFilePath)
+ expect(pool.opts.workerOptions).toBeUndefined()
+ await pool.destroy()
+ pool = new FixedThreadPool(numberOfThreads, workerFilePath, {
workerOptions: {
env: { TEST: 'test' },
name: 'test'
}
})
- expect(pool1.opts.workerOptions).toStrictEqual({
+ expect(pool.opts.workerOptions).toStrictEqual({
env: { TEST: 'test' },
name: 'test'
})
- await pool1.destroy()
+ await pool.destroy()
})
it('Should work even without opts in input', async () => {
- const pool1 = new FixedThreadPool(
- numberOfThreads,
- './tests/worker-files/thread/testWorker.js'
- )
- const res = await pool1.execute()
+ const workerFilePath = './tests/worker-files/thread/testWorker.js'
+ const pool = new FixedThreadPool(numberOfThreads, workerFilePath)
+ const res = await pool.execute()
expect(res).toStrictEqual({ ok: 1 })
// We need to clean up the resources after our test
- await pool1.destroy()
+ await pool.destroy()
+ })
+
+ it('Verify destroyWorkerNode()', async () => {
+ const workerFilePath = './tests/worker-files/thread/testWorker.js'
+ const pool = new FixedThreadPool(numberOfThreads, workerFilePath)
+ const workerNodeKey = 0
+ let exitEvent = 0
+ pool.workerNodes[workerNodeKey].worker.on('exit', () => {
+ ++exitEvent
+ })
+ await expect(pool.destroyWorkerNode(workerNodeKey)).resolves.toBeUndefined()
+ expect(exitEvent).toBe(1)
+ expect(pool.workerNodes.length).toBe(numberOfThreads - 1)
+ await pool.destroy()
})
it('Verify that a pool with zero worker fails', async () => {