tests/pools/worker-node.test.js

   1 const { MessageChannel, Worker } = require('node:worker_threads')
   2 const cluster = require('node:cluster')
   3 const { expect } = require('expect')
   4 const { WorkerNode } = require('../../lib/pools/worker-node')
   5 const { WorkerTypes } = require('../../lib')
   6 const { CircularArray } = require('../../lib/circular-array')
   7 const { Deque } = require('../../lib/deque')
   8 const { DEFAULT_TASK_NAME } = require('../../lib/utils')
   9
  10 describe('Worker node test suite', () => {
  11   const threadWorker = new Worker('./tests/worker-files/thread/testWorker.js')
  12   const clusterWorker = cluster.fork()
  13   const threadWorkerNode = new WorkerNode(threadWorker, 12)
  14   const clusterWorkerNode = new WorkerNode(clusterWorker, 12)
  15
  16   it('Worker node instantiation', () => {
  17     expect(() => new WorkerNode()).toThrowError(
  18       new TypeError('Cannot construct a worker node without a worker')
  19     )
  20     expect(() => new WorkerNode(threadWorker)).toThrowError(
  21       new TypeError(
  22         'Cannot construct a worker node without a tasks queue back pressure size'
  23       )
  24     )
  25     expect(
  26       () => new WorkerNode(threadWorker, 'invalidTasksQueueBackPressureSize')
  27     ).toThrowError(
  28       new TypeError(
  29         'Cannot construct a worker node with a tasks queue back pressure size that is not an integer'
  30       )
  31     )
  32     expect(() => new WorkerNode(threadWorker, 0.2)).toThrowError(
  33       new TypeError(
  34         'Cannot construct a worker node with a tasks queue back pressure size that is not an integer'
  35       )
  36     )
  37     expect(() => new WorkerNode(threadWorker, 0)).toThrowError(
  38       new RangeError(
  39         'Cannot construct a worker node with a tasks queue back pressure size that is not a positive integer'
  40       )
  41     )
  42     expect(() => new WorkerNode(threadWorker, -1)).toThrowError(
  43       new RangeError(
  44         'Cannot construct a worker node with a tasks queue back pressure size that is not a positive integer'
  45       )
  46     )
  47     expect(threadWorkerNode).toBeInstanceOf(WorkerNode)
  48     expect(threadWorkerNode.worker).toBe(threadWorker)
  49     expect(threadWorkerNode.info).toStrictEqual({
  50       id: threadWorker.threadId,
  51       type: WorkerTypes.thread,
  52       dynamic: false,
  53       ready: false
  54     })
  55     expect(threadWorkerNode.usage).toStrictEqual({
  56       tasks: {
  57         executed: 0,
  58         executing: 0,
  59         queued: 0,
  60         maxQueued: 0,
  61         stolen: 0,
  62         failed: 0
  63       },
  64       runTime: {
  65         history: new CircularArray()
  66       },
  67       waitTime: {
  68         history: new CircularArray()
  69       },
  70       elu: {
  71         idle: {
  72           history: new CircularArray()
  73         },
  74         active: {
  75           history: new CircularArray()
  76         }
  77       }
  78     })
  79     expect(threadWorkerNode.messageChannel).toBeInstanceOf(MessageChannel)
  80     expect(threadWorkerNode.tasksQueueBackPressureSize).toBe(12)
  81     expect(threadWorkerNode.tasksQueue).toBeInstanceOf(Deque)
  82     expect(threadWorkerNode.tasksQueue.size).toBe(0)
  83     expect(threadWorkerNode.tasksQueueSize()).toBe(
  84       threadWorkerNode.tasksQueue.size
  85     )
  86     expect(threadWorkerNode.onBackPressureStarted).toBe(false)
  87     expect(threadWorkerNode.onEmptyQueueCount).toBe(0)
  88     expect(threadWorkerNode.taskFunctionsUsage).toBeInstanceOf(Map)
  89
  90     expect(clusterWorkerNode).toBeInstanceOf(WorkerNode)
  91     expect(clusterWorkerNode.worker).toBe(clusterWorker)
  92     expect(clusterWorkerNode.info).toStrictEqual({
  93       id: clusterWorker.id,
  94       type: WorkerTypes.cluster,
  95       dynamic: false,
  96       ready: false
  97     })
  98     expect(clusterWorkerNode.usage).toStrictEqual({
  99       tasks: {
 100         executed: 0,
 101         executing: 0,
 102         queued: 0,
 103         maxQueued: 0,
 104         stolen: 0,
 105         failed: 0
 106       },
 107       runTime: {
 108         history: new CircularArray()
 109       },
 110       waitTime: {
 111         history: new CircularArray()
 112       },
 113       elu: {
 114         idle: {
 115           history: new CircularArray()
 116         },
 117         active: {
 118           history: new CircularArray()
 119         }
 120       }
 121     })
 122     expect(clusterWorkerNode.messageChannel).toBeUndefined()
 123     expect(clusterWorkerNode.tasksQueueBackPressureSize).toBe(12)
 124     expect(clusterWorkerNode.tasksQueue).toBeInstanceOf(Deque)
 125     expect(clusterWorkerNode.tasksQueue.size).toBe(0)
 126     expect(clusterWorkerNode.tasksQueueSize()).toBe(
 127       clusterWorkerNode.tasksQueue.size
 128     )
 129     expect(clusterWorkerNode.onBackPressureStarted).toBe(false)
 130     expect(clusterWorkerNode.onEmptyQueueCount).toBe(0)
 131     expect(clusterWorkerNode.taskFunctionsUsage).toBeInstanceOf(Map)
 132   })
 133
 134   it('Worker node getTaskFunctionWorkerUsage()', () => {
 135     expect(() =>
 136       threadWorkerNode.getTaskFunctionWorkerUsage('invalidTaskFunction')
 137     ).toThrowError(
 138       new TypeError(
 139         "Cannot get task function worker usage for task function name 'invalidTaskFunction' when task function names list is not yet defined"
 140       )
 141     )
 142     threadWorkerNode.info.taskFunctionNames = [DEFAULT_TASK_NAME, 'fn1']
 143     expect(() =>
 144       threadWorkerNode.getTaskFunctionWorkerUsage('invalidTaskFunction')
 145     ).toThrowError(
 146       new TypeError(
 147         "Cannot get task function worker usage for task function name 'invalidTaskFunction' when task function names list has less than 3 elements"
 148       )
 149     )
 150     threadWorkerNode.info.taskFunctionNames = [DEFAULT_TASK_NAME, 'fn1', 'fn2']
 151     expect(
 152       threadWorkerNode.getTaskFunctionWorkerUsage(DEFAULT_TASK_NAME)
 153     ).toStrictEqual({
 154       tasks: {
 155         executed: 0,
 156         executing: 0,
 157         queued: 0,
 158         stolen: 0,
 159         failed: 0
 160       },
 161       runTime: {
 162         history: new CircularArray()
 163       },
 164       waitTime: {
 165         history: new CircularArray()
 166       },
 167       elu: {
 168         idle: {
 169           history: new CircularArray()
 170         },
 171         active: {
 172           history: new CircularArray()
 173         }
 174       }
 175     })
 176     expect(threadWorkerNode.getTaskFunctionWorkerUsage('fn1')).toStrictEqual({
 177       tasks: {
 178         executed: 0,
 179         executing: 0,
 180         queued: 0,
 181         stolen: 0,
 182         failed: 0
 183       },
 184       runTime: {
 185         history: new CircularArray()
 186       },
 187       waitTime: {
 188         history: new CircularArray()
 189       },
 190       elu: {
 191         idle: {
 192           history: new CircularArray()
 193         },
 194         active: {
 195           history: new CircularArray()
 196         }
 197       }
 198     })
 199     expect(threadWorkerNode.getTaskFunctionWorkerUsage('fn2')).toStrictEqual({
 200       tasks: {
 201         executed: 0,
 202         executing: 0,
 203         queued: 0,
 204         stolen: 0,
 205         failed: 0
 206       },
 207       runTime: {
 208         history: new CircularArray()
 209       },
 210       waitTime: {
 211         history: new CircularArray()
 212       },
 213       elu: {
 214         idle: {
 215           history: new CircularArray()
 216         },
 217         active: {
 218           history: new CircularArray()
 219         }
 220       }
 221     })
 222     expect(threadWorkerNode.taskFunctionsUsage.size).toBe(2)
 223   })
 224
 225   it('Worker node deleteTaskFunctionWorkerUsage()', () => {
 226     expect(threadWorkerNode.info.taskFunctionNames).toStrictEqual([
 227       DEFAULT_TASK_NAME,
 228       'fn1',
 229       'fn2'
 230     ])
 231     expect(threadWorkerNode.taskFunctionsUsage.size).toBe(2)
 232     expect(
 233       threadWorkerNode.deleteTaskFunctionWorkerUsage('invalidTaskFunction')
 234     ).toBe(false)
 235     expect(threadWorkerNode.taskFunctionsUsage.size).toBe(2)
 236     expect(threadWorkerNode.deleteTaskFunctionWorkerUsage('fn1')).toBe(true)
 237     expect(threadWorkerNode.taskFunctionsUsage.size).toBe(1)
 238   })
 239 })