const { waitPoolEvents, waitWorkerEvents } = require('../../test-utils')
describe('Fixed cluster pool test suite', () => {
- const numberOfWorkers = 6
+ const numberOfWorkers = 8
const tasksConcurrency = 2
const pool = new FixedClusterPool(
numberOfWorkers,
expect(poolReady).toBe(1)
})
- it("Verify that 'busy' event is emitted", () => {
+ 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)
}
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.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(
numberOfWorkers * queuePool.opts.tasksQueueOptions.concurrency
)
numberOfWorkers *
(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(
+ numberOfWorkers * 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(
+ numberOfWorkers * maxMultiplier
+ )
}
+ expect(queuePool.info.executedTasks).toBe(numberOfWorkers * maxMultiplier)
+ expect(queuePool.info.backPressure).toBe(false)
+ expect(queuePool.info.stolenTasks).toBeGreaterThanOrEqual(0)
+ expect(queuePool.info.stolenTasks).toBeLessThanOrEqual(
+ numberOfWorkers * maxMultiplier
+ )
})
it('Verify that is possible to have a worker that return undefined', async () => {
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 () => {