const { expect } = require('expect')
-const { FixedClusterPool } = require('../../../lib/index')
-const WorkerFunctions = require('../../test-types')
+const { FixedClusterPool, PoolEvents } = require('../../../lib')
+const { WorkerFunctions } = require('../../test-types')
const TestUtils = require('../../test-utils')
describe('Fixed cluster pool test suite', () => {
errorHandler: e => console.error(e)
}
)
+ const queuePool = new FixedClusterPool(
+ numberOfWorkers,
+ './tests/worker-files/cluster/testWorker.js',
+ {
+ enableTasksQueue: true,
+ tasksQueueOptions: {
+ concurrency: 2
+ },
+ errorHandler: e => console.error(e)
+ }
+ )
const emptyPool = new FixedClusterPool(
numberOfWorkers,
'./tests/worker-files/cluster/emptyWorker.js',
await errorPool.destroy()
await asyncErrorPool.destroy()
await emptyPool.destroy()
- })
-
- it('Choose worker round robin test', async () => {
- const results = new Set()
- for (let i = 0; i < numberOfWorkers; i++) {
- results.add(pool.chooseWorker().id)
- }
- expect(results.size).toBe(numberOfWorkers)
+ await queuePool.destroy()
})
it('Verify that the function is executed in a worker cluster', async () => {
let result = await pool.execute({
function: WorkerFunctions.fibonacci
})
- expect(result).toBe(false)
+ expect(result).toBe(121393)
result = await pool.execute({
function: WorkerFunctions.factorial
})
- expect(result).toBe(false)
+ expect(result).toBe(9.33262154439441e157)
})
- it('Verify that is possible to invoke the execute method without input', async () => {
+ it('Verify that is possible to invoke the execute() method without input', async () => {
const result = await pool.execute()
expect(result).toBe(false)
})
- it('Verify that busy event is emitted', async () => {
- const promises = []
+ it("Verify that 'busy' event is emitted", async () => {
let poolBusy = 0
- pool.emitter.on('busy', () => poolBusy++)
+ pool.emitter.on(PoolEvents.busy, () => ++poolBusy)
for (let i = 0; i < numberOfWorkers * 2; i++) {
- promises.push(pool.execute())
+ pool.execute()
}
// 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 maxMultiplier = 2
+ const promises = new Set()
+ 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.tasksUsage.running).toBeLessThanOrEqual(
+ queuePool.opts.tasksQueueOptions.concurrency
+ )
+ expect(workerNode.tasksUsage.run).toBe(0)
+ expect(workerNode.tasksQueue.size).toBeGreaterThan(0)
+ }
+ expect(queuePool.numberOfRunningTasks).toBe(numberOfWorkers)
+ expect(queuePool.numberOfQueuedTasks).toBe(
+ numberOfWorkers * maxMultiplier - numberOfWorkers
+ )
+ await Promise.all(promises)
+ for (const workerNode of queuePool.workerNodes) {
+ expect(workerNode.tasksUsage.running).toBe(0)
+ expect(workerNode.tasksUsage.run).toBeGreaterThan(0)
+ expect(workerNode.tasksQueue.size).toBe(0)
+ }
+ promises.clear()
+ })
+
it('Verify that is possible to have a worker that return undefined', async () => {
const result = await emptyPool.execute()
expect(result).toBeUndefined()
expect(inError).toBeDefined()
expect(typeof inError === 'string').toBe(true)
expect(inError).toBe('Error Message from ClusterWorker')
+ expect(
+ errorPool.workerNodes.some(
+ workerNode => workerNode.tasksUsage.error === 1
+ )
+ ).toBe(true)
})
it('Verify that error handling is working properly:async', async () => {
expect(inError).toBeDefined()
expect(typeof inError === 'string').toBe(true)
expect(inError).toBe('Error Message from ClusterWorker:async')
+ expect(
+ asyncErrorPool.workerNodes.some(
+ workerNode => workerNode.tasksUsage.error === 1
+ )
+ ).toBe(true)
})
it('Verify that async function is working properly', async () => {
const data = { f: 10 }
- const startTime = Date.now()
+ const startTime = performance.now()
const result = await asyncPool.execute(data)
- const usedTime = Date.now() - startTime
+ const usedTime = performance.now() - startTime
expect(result).toStrictEqual(data)
expect(usedTime).toBeGreaterThanOrEqual(2000)
})
expect(numberOfExitEvents).toBe(numberOfWorkers)
})
+ it('Verify that cluster pool options are checked', async () => {
+ const workerFilePath = './tests/worker-files/cluster/testWorker.js'
+ let pool1 = new FixedClusterPool(numberOfWorkers, workerFilePath)
+ expect(pool1.opts.env).toBeUndefined()
+ expect(pool1.opts.settings).toBeUndefined()
+ await pool1.destroy()
+ pool1 = new FixedClusterPool(numberOfWorkers, workerFilePath, {
+ env: { TEST: 'test' },
+ settings: { args: ['--use', 'http'], silent: true }
+ })
+ expect(pool1.opts.env).toStrictEqual({ TEST: 'test' })
+ expect(pool1.opts.settings).toStrictEqual({
+ args: ['--use', 'http'],
+ silent: true
+ })
+ expect({ ...pool1.opts.settings, exec: workerFilePath }).toStrictEqual({
+ args: ['--use', 'http'],
+ silent: true,
+ exec: workerFilePath
+ })
+ await pool1.destroy()
+ })
+
it('Should work even without opts in input', async () => {
const pool1 = new FixedClusterPool(
numberOfWorkers,
expect(
() =>
new FixedClusterPool(0, './tests/worker-files/cluster/testWorker.js')
- ).toThrowError(new Error('Cannot instantiate a fixed pool with no worker'))
+ ).toThrowError('Cannot instantiate a fixed pool with no worker')
})
})
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