const { expect } = require('expect')
const { FixedClusterPool, PoolEvents } = require('../../../lib')
-const { WorkerFunctions } = require('../../test-types')
+const { TaskFunctions } = require('../../test-types')
const { waitPoolEvents, waitWorkerEvents } = require('../../test-utils')
describe('Fixed cluster pool test suite', () => {
const numberOfWorkers = 6
+ const tasksConcurrency = 2
const pool = new FixedClusterPool(
numberOfWorkers,
'./tests/worker-files/cluster/testWorker.js',
{
- errorHandler: e => console.error(e)
+ errorHandler: (e) => console.error(e)
}
)
const queuePool = new FixedClusterPool(
{
enableTasksQueue: true,
tasksQueueOptions: {
- concurrency: 2
+ concurrency: tasksConcurrency
},
- errorHandler: e => console.error(e)
+ errorHandler: (e) => console.error(e)
}
)
const emptyPool = new FixedClusterPool(
numberOfWorkers,
'./tests/worker-files/cluster/emptyWorker.js',
- { exitHandler: () => console.log('empty pool worker exited') }
+ { exitHandler: () => console.info('empty pool worker exited') }
)
const echoPool = new FixedClusterPool(
numberOfWorkers,
numberOfWorkers,
'./tests/worker-files/cluster/errorWorker.js',
{
- errorHandler: e => console.error(e)
+ errorHandler: (e) => console.error(e)
}
)
const asyncErrorPool = new FixedClusterPool(
numberOfWorkers,
'./tests/worker-files/cluster/asyncErrorWorker.js',
{
- errorHandler: e => console.error(e)
+ errorHandler: (e) => console.error(e)
}
)
const asyncPool = new FixedClusterPool(
it('Verify that the function is executed in a worker cluster', async () => {
let result = await pool.execute({
- function: WorkerFunctions.fibonacci
+ function: TaskFunctions.fibonacci
})
expect(result).toBe(75025)
result = await pool.execute({
- function: WorkerFunctions.factorial
+ function: TaskFunctions.factorial
})
expect(result).toBe(9.33262154439441e157)
})
numberOfWorkers,
'./tests/worker-files/cluster/testWorker.js',
{
- errorHandler: e => console.error(e)
+ errorHandler: (e) => console.error(e)
}
)
let poolReady = 0
})
it("Verify that 'busy' event is emitted", async () => {
+ const promises = new Set()
let poolBusy = 0
pool.emitter.on(PoolEvents.busy, () => ++poolBusy)
for (let i = 0; i < numberOfWorkers * 2; i++) {
- pool.execute()
+ promises.add(pool.execute())
}
+ await Promise.all(promises)
// The `busy` event is triggered when the number of submitted tasks at once reach the number of fixed pool workers.
// So in total numberOfWorkers + 1 times for a loop submitting up to numberOfWorkers * 2 tasks to the fixed pool.
expect(poolBusy).toBe(numberOfWorkers + 1)
it('Verify that tasks queuing is working', async () => {
const promises = new Set()
- const maxMultiplier = 2
+ const maxMultiplier = 3 // Must be greater than tasksConcurrency
for (let i = 0; i < numberOfWorkers * maxMultiplier; i++) {
promises.add(queuePool.execute())
}
expect(promises.size).toBe(numberOfWorkers * maxMultiplier)
for (const workerNode of queuePool.workerNodes) {
+ expect(workerNode.usage.tasks.executing).toBeGreaterThanOrEqual(0)
expect(workerNode.usage.tasks.executing).toBeLessThanOrEqual(
queuePool.opts.tasksQueueOptions.concurrency
)
expect(workerNode.usage.tasks.executed).toBe(0)
- expect(workerNode.usage.tasks.queued).toBeGreaterThan(0)
- expect(workerNode.usage.tasks.maxQueued).toBeGreaterThan(0)
+ expect(workerNode.usage.tasks.queued).toBe(
+ maxMultiplier - queuePool.opts.tasksQueueOptions.concurrency
+ )
+ expect(workerNode.usage.tasks.maxQueued).toBe(
+ maxMultiplier - queuePool.opts.tasksQueueOptions.concurrency
+ )
}
- expect(queuePool.info.executingTasks).toBe(numberOfWorkers)
+ expect(queuePool.info.executingTasks).toBe(
+ numberOfWorkers * queuePool.opts.tasksQueueOptions.concurrency
+ )
expect(queuePool.info.queuedTasks).toBe(
- numberOfWorkers * maxMultiplier - numberOfWorkers
+ numberOfWorkers *
+ (maxMultiplier - queuePool.opts.tasksQueueOptions.concurrency)
)
expect(queuePool.info.maxQueuedTasks).toBe(
- numberOfWorkers * maxMultiplier - numberOfWorkers
+ numberOfWorkers *
+ (maxMultiplier - queuePool.opts.tasksQueueOptions.concurrency)
)
+ expect(queuePool.info.backPressure).toBe(false)
await Promise.all(promises)
for (const workerNode of queuePool.workerNodes) {
expect(workerNode.usage.tasks.executing).toBe(0)
- expect(workerNode.usage.tasks.executed).toBeGreaterThan(0)
- expect(workerNode.usage.tasks.executed).toBeLessThanOrEqual(maxMultiplier)
+ expect(workerNode.usage.tasks.executed).toBe(maxMultiplier)
expect(workerNode.usage.tasks.queued).toBe(0)
- expect(workerNode.usage.tasks.maxQueued).toBe(1)
+ expect(workerNode.usage.tasks.maxQueued).toBe(
+ maxMultiplier - queuePool.opts.tasksQueueOptions.concurrency
+ )
}
})
it('Verify that error handling is working properly:sync', async () => {
const data = { f: 10 }
let taskError
- errorPool.emitter.on(PoolEvents.taskError, e => {
+ errorPool.emitter.on(PoolEvents.taskError, (e) => {
taskError = e
})
let inError
})
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 }
let taskError
- asyncErrorPool.emitter.on(PoolEvents.taskError, e => {
+ asyncErrorPool.emitter.on(PoolEvents.taskError, (e) => {
taskError = e
})
let inError
})
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', numberOfWorkers)
+ let poolDestroy = 0
+ pool.emitter.on(PoolEvents.destroy, () => ++poolDestroy)
await pool.destroy()
const numberOfExitEvents = await exitPromise
expect(numberOfExitEvents).toBe(numberOfWorkers)
+ expect(poolDestroy).toBe(1)
})
it('Verify that cluster pool options are checked', async () => {