+ it("Verify that pool event emitter 'ready' event can register a callback", async () => {
+ const pool = new DynamicClusterPool(
+ Math.floor(numberOfWorkers / 2),
+ numberOfWorkers,
+ './tests/worker-files/cluster/testWorker.js'
+ )
+ let poolInfo
+ let poolReady = 0
+ pool.emitter.on(PoolEvents.ready, (info) => {
+ ++poolReady
+ poolInfo = info
+ })
+ await waitPoolEvents(pool, PoolEvents.ready, 1)
+ expect(poolReady).toBe(1)
+ expect(poolInfo).toStrictEqual({
+ version,
+ type: PoolTypes.dynamic,
+ worker: WorkerTypes.cluster,
+ ready: true,
+ strategy: WorkerChoiceStrategies.ROUND_ROBIN,
+ minSize: expect.any(Number),
+ maxSize: expect.any(Number),
+ workerNodes: expect.any(Number),
+ idleWorkerNodes: expect.any(Number),
+ busyWorkerNodes: expect.any(Number),
+ executedTasks: expect.any(Number),
+ executingTasks: expect.any(Number),
+ failedTasks: expect.any(Number)
+ })
+ await pool.destroy()
+ })
+
+ it("Verify that pool event emitter 'busy' event can register a callback", async () => {
+ const pool = new FixedThreadPool(
+ numberOfWorkers,
+ './tests/worker-files/thread/testWorker.js'
+ )
+ const promises = new Set()
+ let poolBusy = 0
+ let poolInfo
+ pool.emitter.on(PoolEvents.busy, (info) => {
+ ++poolBusy
+ poolInfo = info
+ })
+ for (let i = 0; i < numberOfWorkers * 2; i++) {
+ 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(poolInfo).toStrictEqual({
+ version,
+ type: PoolTypes.fixed,
+ worker: WorkerTypes.thread,
+ ready: expect.any(Boolean),
+ strategy: WorkerChoiceStrategies.ROUND_ROBIN,
+ minSize: expect.any(Number),
+ maxSize: expect.any(Number),
+ workerNodes: expect.any(Number),
+ idleWorkerNodes: expect.any(Number),
+ busyWorkerNodes: expect.any(Number),
+ executedTasks: expect.any(Number),
+ executingTasks: expect.any(Number),
+ failedTasks: expect.any(Number)
+ })
+ await pool.destroy()
+ })
+