-const expect = require('expect')
-const { DynamicThreadPool } = require('../../../lib/index')
-const TestUtils = require('../../test-utils')
-const min = 1
-const max = 3
-const pool = new DynamicThreadPool(
- min,
- max,
- './tests/worker-files/thread/testWorker.js',
- {
- errorHandler: e => console.error(e)
- }
-)
+const { expect } = require('expect')
+const { DynamicThreadPool, PoolEvents } = require('../../../lib')
+const { TaskFunctions } = require('../../test-types')
+const { sleep, waitWorkerEvents } = require('../../test-utils')
describe('Dynamic thread pool test suite', () => {
+ const min = 1
+ const max = 3
+ const pool = new DynamicThreadPool(
+ min,
+ max,
+ './tests/worker-files/thread/testWorker.js',
+ {
+ errorHandler: (e) => console.error(e)
+ }
+ )
+
it('Verify that the function is executed in a worker thread', async () => {
- const result = await pool.execute({ test: 'test' })
- expect(result).toBeDefined()
- expect(result).toBeFalsy()
+ let result = await pool.execute({
+ function: TaskFunctions.fibonacci
+ })
+ expect(result).toBe(75025)
+ result = await pool.execute({
+ function: TaskFunctions.factorial
+ })
+ expect(result).toBe(9.33262154439441e157)
})
it('Verify that new workers are created when required, max size is not exceeded and that after a while new workers will die', async () => {
- const promises = []
- let fullPool = 0
- pool.emitter.on('FullPool', () => fullPool++)
+ let poolBusy = 0
+ pool.emitter.on(PoolEvents.busy, () => ++poolBusy)
for (let i = 0; i < max * 2; i++) {
- promises.push(pool.execute({ test: 'test' }))
+ pool.execute()
}
- expect(pool.workers.length).toBe(max)
- expect(fullPool > 1).toBeTruthy()
- const res = await TestUtils.waitExits(pool, max - min)
- expect(res).toBe(max - min)
+ expect(pool.workerNodes.length).toBeLessThanOrEqual(max)
+ expect(pool.workerNodes.length).toBeGreaterThan(min)
+ expect(poolBusy).toBe(1)
+ const numberOfExitEvents = await waitWorkerEvents(pool, 'exit', max - min)
+ expect(numberOfExitEvents).toBe(max - min)
})
it('Verify scale thread up and down is working', async () => {
- expect(pool.workers.length).toBe(min)
- for (let i = 0; i < max * 10; i++) {
- pool.execute({ test: 'test' })
+ expect(pool.workerNodes.length).toBe(min)
+ for (let i = 0; i < max * 2; i++) {
+ pool.execute()
}
- expect(pool.workers.length).toBe(max)
- await TestUtils.waitExits(pool, max - min)
- expect(pool.workers.length).toBe(min)
- for (let i = 0; i < max * 10; i++) {
- pool.execute({ test: 'test' })
+ expect(pool.workerNodes.length).toBe(max)
+ await waitWorkerEvents(pool, 'exit', max - min)
+ expect(pool.workerNodes.length).toBe(min)
+ for (let i = 0; i < max * 2; i++) {
+ pool.execute()
}
- expect(pool.workers.length).toBe(max)
- await TestUtils.waitExits(pool, max - min)
- expect(pool.workers.length).toBe(min)
+ expect(pool.workerNodes.length).toBe(max)
+ await waitWorkerEvents(pool, 'exit', max - min)
+ expect(pool.workerNodes.length).toBe(min)
})
it('Shutdown test', async () => {
- let closedThreads = 0
- pool.workers.forEach(w => {
- w.on('exit', () => {
- closedThreads++
- })
- })
+ const exitPromise = waitWorkerEvents(pool, 'exit', min)
+ let poolDestroy = 0
+ pool.emitter.on(PoolEvents.destroy, () => ++poolDestroy)
await pool.destroy()
- expect(closedThreads).toBe(min)
+ const numberOfExitEvents = await exitPromise
+ expect(pool.started).toBe(false)
+ expect(pool.workerNodes.length).toBe(0)
+ expect(numberOfExitEvents).toBe(min)
+ expect(poolDestroy).toBe(1)
})
- it('Validations test', () => {
- expect(() => {
- const pool1 = new DynamicThreadPool()
- }).toThrowError(
- new Error('Please specify a file with a worker implementation')
+ it('Validation of inputs test', () => {
+ expect(() => new DynamicThreadPool(min)).toThrowError(
+ 'Please specify a file with a worker implementation'
)
})
it('Should work even without opts in input', async () => {
- const pool1 = new DynamicThreadPool(
- 1,
- 1,
+ const pool = new DynamicThreadPool(
+ min,
+ max,
'./tests/worker-files/thread/testWorker.js'
)
- const res = await pool1.execute({ test: 'test' })
- expect(res).toBeFalsy()
+ 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 scale thread up and down is working when long running task is used:hard', async () => {
+ it('Verify scale thread up and down is working when long executing task is used:hard', async () => {
const longRunningPool = new DynamicThreadPool(
min,
max,
'./tests/worker-files/thread/longRunningWorkerHardBehavior.js',
{
- errorHandler: e => console.error(e),
- onlineHandler: () => console.log('worker is online')
+ errorHandler: (e) => console.error(e),
+ onlineHandler: () => console.info('long executing worker is online'),
+ exitHandler: () => console.info('long executing worker exited')
}
)
- expect(longRunningPool.workers.length).toBe(min)
- for (let i = 0; i < max * 10; i++) {
- longRunningPool.execute({ test: 'test' })
+ expect(longRunningPool.workerNodes.length).toBe(min)
+ for (let i = 0; i < max * 2; i++) {
+ longRunningPool.execute()
}
- expect(longRunningPool.workers.length).toBe(max)
- await TestUtils.waitExits(longRunningPool, max - min)
- expect(longRunningPool.workers.length).toBe(min)
+ expect(longRunningPool.workerNodes.length).toBe(max)
+ await waitWorkerEvents(longRunningPool, 'exit', max - min)
+ expect(longRunningPool.workerNodes.length).toBe(min)
+ expect(
+ longRunningPool.workerChoiceStrategyContext.workerChoiceStrategies.get(
+ longRunningPool.workerChoiceStrategyContext.workerChoiceStrategy
+ ).nextWorkerNodeKey
+ ).toBeLessThan(longRunningPool.workerNodes.length)
// We need to clean up the resources after our test
await longRunningPool.destroy()
})
- it('Verify scale thread up and down is working when long running task is used:soft', async () => {
+ it('Verify scale thread up and down is working when long executing task is used:soft', async () => {
const longRunningPool = new DynamicThreadPool(
min,
max,
'./tests/worker-files/thread/longRunningWorkerSoftBehavior.js',
{
- errorHandler: e => console.error(e),
- onlineHandler: () => console.log('worker is online')
+ errorHandler: (e) => console.error(e),
+ onlineHandler: () => console.info('long executing worker is online'),
+ exitHandler: () => console.info('long executing worker exited')
}
)
- expect(longRunningPool.workers.length).toBe(min)
- for (let i = 0; i < max * 10; i++) {
- longRunningPool.execute({ test: 'test' })
+ expect(longRunningPool.workerNodes.length).toBe(min)
+ for (let i = 0; i < max * 2; i++) {
+ longRunningPool.execute()
}
- expect(longRunningPool.workers.length).toBe(max)
- await TestUtils.sleep(1500)
- // Here we expect the workers to be at the max size since that the task is still running
- expect(longRunningPool.workers.length).toBe(max)
+ expect(longRunningPool.workerNodes.length).toBe(max)
+ await sleep(1000)
+ // Here we expect the workerNodes to be at the max size since the task is still executing
+ expect(longRunningPool.workerNodes.length).toBe(max)
// We need to clean up the resources after our test
await longRunningPool.destroy()
})
+
+ it('Verify that a pool with zero worker can be instantiated', async () => {
+ const pool = new DynamicThreadPool(
+ 0,
+ max,
+ './tests/worker-files/thread/testWorker.js'
+ )
+ expect(pool).toBeInstanceOf(DynamicThreadPool)
+ // We need to clean up the resources after our test
+ await pool.destroy()
+ })
})
repositories / poolifier.git / blobdiff