+
+ it('Verify that pool options are checked', () => {
+ let pool = new FixedThreadPool(
+ numberOfWorkers,
+ './tests/worker-files/thread/testWorker.js'
+ )
+ expect(pool.opts.enableEvents).toBe(true)
+ expect(pool.emitter).toBeDefined()
+ expect(pool.opts.workerChoiceStrategy).toBe(
+ WorkerChoiceStrategies.ROUND_ROBIN
+ )
+ expect(pool.opts.messageHandler).toBeUndefined()
+ expect(pool.opts.errorHandler).toBeUndefined()
+ expect(pool.opts.onlineHandler).toBeUndefined()
+ expect(pool.opts.exitHandler).toBeUndefined()
+ pool.destroy()
+ const testHandler = () => console.log('test handler executed')
+ pool = new FixedThreadPool(
+ numberOfWorkers,
+ './tests/worker-files/thread/testWorker.js',
+ {
+ workerChoiceStrategy: WorkerChoiceStrategies.LESS_RECENTLY_USED,
+ enableEvents: false,
+ messageHandler: testHandler,
+ errorHandler: testHandler,
+ onlineHandler: testHandler,
+ exitHandler: testHandler
+ }
+ )
+ expect(pool.opts.enableEvents).toBe(false)
+ expect(pool.emitter).toBeUndefined()
+ expect(pool.opts.workerChoiceStrategy).toBe(
+ WorkerChoiceStrategies.LESS_RECENTLY_USED
+ )
+ expect(pool.opts.messageHandler).toStrictEqual(testHandler)
+ expect(pool.opts.errorHandler).toStrictEqual(testHandler)
+ expect(pool.opts.onlineHandler).toStrictEqual(testHandler)
+ expect(pool.opts.exitHandler).toStrictEqual(testHandler)
+ pool.destroy()
+ })
+
+ it("Verify that pool event emitter 'busy' event can register a callback", () => {
+ const pool = new FixedThreadPool(
+ numberOfWorkers,
+ './tests/worker-files/thread/testWorker.js'
+ )
+ const promises = []
+ let poolBusy = 0
+ pool.emitter.on('busy', () => poolBusy++)
+ for (let i = 0; i < numberOfWorkers * 2; i++) {
+ promises.push(pool.execute({ test: 'test' }))
+ }
+ // 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)
+ pool.destroy()
+ })