test: less strict expectation

[poolifier.git] / tests / pools / selection-strategies / selection-strategies.test.mjs

diff --git a/tests/pools/selection-strategies/selection-strategies.test.mjs b/tests/pools/selection-strategies/selection-strategies.test.mjs
index 342d2fa6c997c0bfe1f696cfcecfefcce91931c2..d4ea1df3b7978c76455427b31e72681ab93d855e 100644 (file)
--- a/tests/pools/selection-strategies/selection-strategies.test.mjs
+++ b/tests/pools/selection-strategies/selection-strategies.test.mjs
@@ -30,7 +30,7 @@ describe('Selection strategies test suite', () => {
     const pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js'
+      './tests/worker-files/thread/testWorker.mjs'
     )
     expect(pool.opts.workerChoiceStrategy).toBe(
       WorkerChoiceStrategies.ROUND_ROBIN
@@ -43,7 +43,7 @@ describe('Selection strategies test suite', () => {
     for (const workerChoiceStrategy of Object.values(WorkerChoiceStrategies)) {
       const pool = new FixedThreadPool(
         max,
-        './tests/worker-files/thread/testWorker.js',
+        './tests/worker-files/thread/testWorker.mjs',
         { workerChoiceStrategy }
       )
       expect(pool.opts.workerChoiceStrategy).toBe(workerChoiceStrategy)
@@ -59,24 +59,25 @@ describe('Selection strategies test suite', () => {
       const pool = new DynamicThreadPool(
         min,
         max,
-        './tests/worker-files/thread/testWorker.js'
+        './tests/worker-files/thread/testWorker.mjs'
       )
       pool.setWorkerChoiceStrategy(workerChoiceStrategy)
       expect(pool.opts.workerChoiceStrategy).toBe(workerChoiceStrategy)
       expect(pool.workerChoiceStrategyContext.workerChoiceStrategy).toBe(
         workerChoiceStrategy
       )
-      expect(pool.opts.workerChoiceStrategyOptions).toStrictEqual({
-        retries: 6,
-        runTime: { median: false },
-        waitTime: { median: false },
-        elu: { median: false }
-      })
+      expect(pool.opts.workerChoiceStrategyOptions).toBeUndefined()
       expect(pool.workerChoiceStrategyContext.opts).toStrictEqual({
-        retries: 6,
+        retries:
+          pool.info.maxSize +
+          Object.keys(pool.workerChoiceStrategyContext.opts.weights).length,
         runTime: { median: false },
         waitTime: { median: false },
-        elu: { median: false }
+        elu: { median: false },
+        weights: expect.objectContaining({
+          0: expect.any(Number),
+          [pool.info.maxSize - 1]: expect.any(Number)
+        })
       })
       await pool.destroy()
     }
@@ -86,22 +87,23 @@ describe('Selection strategies test suite', () => {
         max,
         './tests/worker-files/cluster/testWorker.js'
       )
-      pool.setWorkerChoiceStrategy(workerChoiceStrategy, { retries: 3 })
+      pool.setWorkerChoiceStrategy(workerChoiceStrategy)
       expect(pool.opts.workerChoiceStrategy).toBe(workerChoiceStrategy)
       expect(pool.workerChoiceStrategyContext.workerChoiceStrategy).toBe(
         workerChoiceStrategy
       )
-      expect(pool.opts.workerChoiceStrategyOptions).toStrictEqual({
-        retries: 3,
-        runTime: { median: false },
-        waitTime: { median: false },
-        elu: { median: false }
-      })
+      expect(pool.opts.workerChoiceStrategyOptions).toBeUndefined()
       expect(pool.workerChoiceStrategyContext.opts).toStrictEqual({
-        retries: 3,
+        retries:
+          pool.info.maxSize +
+          Object.keys(pool.workerChoiceStrategyContext.opts.weights).length,
         runTime: { median: false },
         waitTime: { median: false },
-        elu: { median: false }
+        elu: { median: false },
+        weights: expect.objectContaining({
+          0: expect.any(Number),
+          [pool.info.maxSize - 1]: expect.any(Number)
+        })
       })
       await pool.destroy()
     }
@@ -110,7 +112,7 @@ describe('Selection strategies test suite', () => {
   it('Verify available strategies default internals at pool creation', async () => {
     const pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js'
+      './tests/worker-files/thread/testWorker.mjs'
     )
     for (const workerChoiceStrategy of Object.values(WorkerChoiceStrategies)) {
       expect(
@@ -126,11 +128,6 @@ describe('Selection strategies test suite', () => {
       if (
         workerChoiceStrategy === WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
       ) {
-        expect(
-          pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-            workerChoiceStrategy
-          ).defaultWorkerWeight
-        ).toBeGreaterThan(0)
         expect(
           pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
             workerChoiceStrategy
@@ -140,11 +137,6 @@ describe('Selection strategies test suite', () => {
         workerChoiceStrategy ===
         WorkerChoiceStrategies.INTERLEAVED_WEIGHTED_ROUND_ROBIN
       ) {
-        expect(
-          pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-            workerChoiceStrategy
-          ).defaultWorkerWeight
-        ).toBeGreaterThan(0)
         expect(
           pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
             workerChoiceStrategy
@@ -163,22 +155,37 @@ describe('Selection strategies test suite', () => {
         expect(
           pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
             workerChoiceStrategy
-          ).roundWeights
-        ).toStrictEqual([
-          pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-            workerChoiceStrategy
-          ).defaultWorkerWeight
-        ])
+          ).roundWeights.length
+        ).toBe(1)
       }
     }
     await pool.destroy()
   })
 
+  it('Verify strategies wait for worker node readiness in dynamic pool', async () => {
+    const pool = new DynamicThreadPool(
+      min,
+      max,
+      './tests/worker-files/thread/testWorker.mjs'
+    )
+    expect(pool.starting).toBe(false)
+    expect(pool.workerNodes.length).toBe(min)
+    const maxMultiplier = 10000
+    const promises = new Set()
+    for (let i = 0; i < max * maxMultiplier; i++) {
+      promises.add(pool.execute())
+    }
+    await Promise.all(promises)
+    expect(pool.workerNodes.length).toBe(max)
+    // We need to clean up the resources after our test
+    await pool.destroy()
+  })
+
   it('Verify ROUND_ROBIN strategy default policy', async () => {
     const workerChoiceStrategy = WorkerChoiceStrategies.ROUND_ROBIN
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(pool.workerChoiceStrategyContext.getStrategyPolicy()).toStrictEqual({
@@ -189,7 +196,7 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(pool.workerChoiceStrategyContext.getStrategyPolicy()).toStrictEqual({
@@ -204,7 +211,7 @@ describe('Selection strategies test suite', () => {
     const workerChoiceStrategy = WorkerChoiceStrategies.ROUND_ROBIN
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(
@@ -230,7 +237,7 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(
@@ -260,7 +267,7 @@ describe('Selection strategies test suite', () => {
     const workerChoiceStrategy = WorkerChoiceStrategies.ROUND_ROBIN
     const pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     // TODO: Create a better test to cover `RoundRobinWorkerChoiceStrategy#choose`
@@ -277,6 +284,7 @@ describe('Selection strategies test suite', () => {
           executing: 0,
           queued: 0,
           maxQueued: 0,
+          sequentiallyStolen: 0,
           stolen: 0,
           failed: 0
         },
@@ -315,7 +323,7 @@ describe('Selection strategies test suite', () => {
     const pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     // TODO: Create a better test to cover `RoundRobinWorkerChoiceStrategy#choose`
@@ -332,6 +340,7 @@ describe('Selection strategies test suite', () => {
           executing: 0,
           queued: 0,
           maxQueued: 0,
+          sequentiallyStolen: 0,
           stolen: 0,
           failed: 0
         },
@@ -378,18 +387,18 @@ describe('Selection strategies test suite', () => {
     )
     let results = new Set()
     for (let i = 0; i < max; i++) {
-      results.add(pool.workerNodes[pool.chooseWorkerNode()].worker.id)
+      results.add(pool.workerNodes[pool.chooseWorkerNode()].info.id)
     }
     expect(results.size).toBe(max)
     await pool.destroy()
     pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     results = new Set()
     for (let i = 0; i < max; i++) {
-      results.add(pool.workerNodes[pool.chooseWorkerNode()].worker.threadId)
+      results.add(pool.workerNodes[pool.chooseWorkerNode()].info.id)
     }
     expect(results.size).toBe(max)
     await pool.destroy()
@@ -399,7 +408,7 @@ describe('Selection strategies test suite', () => {
     const workerChoiceStrategy = WorkerChoiceStrategies.ROUND_ROBIN
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy: WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN }
     )
     expect(
@@ -427,7 +436,7 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy: WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN }
     )
     expect(
@@ -459,7 +468,7 @@ describe('Selection strategies test suite', () => {
     const workerChoiceStrategy = WorkerChoiceStrategies.LEAST_USED
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(pool.workerChoiceStrategyContext.getStrategyPolicy()).toStrictEqual({
@@ -470,7 +479,7 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(pool.workerChoiceStrategyContext.getStrategyPolicy()).toStrictEqual({
@@ -485,7 +494,7 @@ describe('Selection strategies test suite', () => {
     const workerChoiceStrategy = WorkerChoiceStrategies.LEAST_USED
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(
@@ -511,7 +520,7 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(
@@ -540,7 +549,7 @@ describe('Selection strategies test suite', () => {
   it('Verify LEAST_USED strategy can be run in a fixed pool', async () => {
     const pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy: WorkerChoiceStrategies.LEAST_USED }
     )
     // TODO: Create a better test to cover `LeastUsedWorkerChoiceStrategy#choose`
@@ -557,6 +566,7 @@ describe('Selection strategies test suite', () => {
           executing: 0,
           queued: 0,
           maxQueued: 0,
+          sequentiallyStolen: 0,
           stolen: 0,
           failed: 0
         },
@@ -598,7 +608,7 @@ describe('Selection strategies test suite', () => {
     const pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy: WorkerChoiceStrategies.LEAST_USED }
     )
     // TODO: Create a better test to cover `LeastUsedWorkerChoiceStrategy#choose`
@@ -615,6 +625,7 @@ describe('Selection strategies test suite', () => {
           executing: 0,
           queued: 0,
           maxQueued: 0,
+          sequentiallyStolen: 0,
           stolen: 0,
           failed: 0
         },
@@ -656,7 +667,7 @@ describe('Selection strategies test suite', () => {
     const workerChoiceStrategy = WorkerChoiceStrategies.LEAST_BUSY
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(pool.workerChoiceStrategyContext.getStrategyPolicy()).toStrictEqual({
@@ -667,7 +678,7 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(pool.workerChoiceStrategyContext.getStrategyPolicy()).toStrictEqual({
@@ -682,7 +693,7 @@ describe('Selection strategies test suite', () => {
     const workerChoiceStrategy = WorkerChoiceStrategies.LEAST_BUSY
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(
@@ -708,7 +719,7 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(
@@ -737,7 +748,7 @@ describe('Selection strategies test suite', () => {
   it('Verify LEAST_BUSY strategy can be run in a fixed pool', async () => {
     const pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy: WorkerChoiceStrategies.LEAST_BUSY }
     )
     // TODO: Create a better test to cover `LeastBusyWorkerChoiceStrategy#choose`
@@ -754,6 +765,7 @@ describe('Selection strategies test suite', () => {
           executing: 0,
           queued: 0,
           maxQueued: 0,
+          sequentiallyStolen: 0,
           stolen: 0,
           failed: 0
         },
@@ -805,7 +817,7 @@ describe('Selection strategies test suite', () => {
     const pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy: WorkerChoiceStrategies.LEAST_BUSY }
     )
     // TODO: Create a better test to cover `LeastBusyWorkerChoiceStrategy#choose`
@@ -822,6 +834,7 @@ describe('Selection strategies test suite', () => {
           executing: 0,
           queued: 0,
           maxQueued: 0,
+          sequentiallyStolen: 0,
           stolen: 0,
           failed: 0
         },
@@ -873,7 +886,7 @@ describe('Selection strategies test suite', () => {
     const workerChoiceStrategy = WorkerChoiceStrategies.LEAST_ELU
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(pool.workerChoiceStrategyContext.getStrategyPolicy()).toStrictEqual({
@@ -884,7 +897,7 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(pool.workerChoiceStrategyContext.getStrategyPolicy()).toStrictEqual({
@@ -899,7 +912,7 @@ describe('Selection strategies test suite', () => {
     const workerChoiceStrategy = WorkerChoiceStrategies.LEAST_ELU
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(
@@ -925,7 +938,7 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(
@@ -954,7 +967,7 @@ describe('Selection strategies test suite', () => {
   it('Verify LEAST_ELU strategy can be run in a fixed pool', async () => {
     const pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy: WorkerChoiceStrategies.LEAST_ELU }
     )
     // TODO: Create a better test to cover `LeastEluWorkerChoiceStrategy#choose`
@@ -971,6 +984,7 @@ describe('Selection strategies test suite', () => {
           executing: 0,
           queued: 0,
           maxQueued: 0,
+          sequentiallyStolen: 0,
           stolen: 0,
           failed: 0
         },
@@ -1028,7 +1042,7 @@ describe('Selection strategies test suite', () => {
     const pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy: WorkerChoiceStrategies.LEAST_ELU }
     )
     // TODO: Create a better test to cover `LeastEluWorkerChoiceStrategy#choose`
@@ -1045,6 +1059,7 @@ describe('Selection strategies test suite', () => {
           executing: 0,
           queued: 0,
           maxQueued: 0,
+          sequentiallyStolen: 0,
           stolen: 0,
           failed: 0
         },
@@ -1102,7 +1117,7 @@ describe('Selection strategies test suite', () => {
     const workerChoiceStrategy = WorkerChoiceStrategies.FAIR_SHARE
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(pool.workerChoiceStrategyContext.getStrategyPolicy()).toStrictEqual({
@@ -1113,7 +1128,7 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(pool.workerChoiceStrategyContext.getStrategyPolicy()).toStrictEqual({
@@ -1128,7 +1143,7 @@ describe('Selection strategies test suite', () => {
     const workerChoiceStrategy = WorkerChoiceStrategies.FAIR_SHARE
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(
@@ -1154,7 +1169,7 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(
@@ -1183,7 +1198,7 @@ describe('Selection strategies test suite', () => {
   it('Verify FAIR_SHARE strategy can be run in a fixed pool', async () => {
     const pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy: WorkerChoiceStrategies.FAIR_SHARE }
     )
     // TODO: Create a better test to cover `FairShareChoiceStrategy#choose`
@@ -1200,6 +1215,7 @@ describe('Selection strategies test suite', () => {
           executing: 0,
           queued: 0,
           maxQueued: 0,
+          sequentiallyStolen: 0,
           stolen: 0,
           failed: 0
         },
@@ -1268,7 +1284,7 @@ describe('Selection strategies test suite', () => {
     const pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy: WorkerChoiceStrategies.FAIR_SHARE }
     )
     // TODO: Create a better test to cover `FairShareChoiceStrategy#choose`
@@ -1285,6 +1301,7 @@ describe('Selection strategies test suite', () => {
           executing: 0,
           queued: 0,
           maxQueued: 0,
+          sequentiallyStolen: 0,
           stolen: 0,
           failed: 0
         },
@@ -1353,7 +1370,7 @@ describe('Selection strategies test suite', () => {
     const pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       {
         workerChoiceStrategy: WorkerChoiceStrategies.FAIR_SHARE,
         workerChoiceStrategyOptions: {
@@ -1375,6 +1392,7 @@ describe('Selection strategies test suite', () => {
           executing: 0,
           queued: 0,
           maxQueued: 0,
+          sequentiallyStolen: 0,
           stolen: 0,
           failed: 0
         },
@@ -1443,7 +1461,7 @@ describe('Selection strategies test suite', () => {
     const workerChoiceStrategy = WorkerChoiceStrategies.FAIR_SHARE
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js'
+      './tests/worker-files/thread/testWorker.mjs'
     )
     for (const workerNode of pool.workerNodes) {
       workerNode.strategyData = {
@@ -1458,7 +1476,7 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js'
+      './tests/worker-files/thread/testWorker.mjs'
     )
     for (const workerNode of pool.workerNodes) {
       workerNode.strategyData = {
@@ -1477,7 +1495,7 @@ describe('Selection strategies test suite', () => {
     const workerChoiceStrategy = WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(pool.workerChoiceStrategyContext.getStrategyPolicy()).toStrictEqual({
@@ -1488,7 +1506,7 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(pool.workerChoiceStrategyContext.getStrategyPolicy()).toStrictEqual({
@@ -1503,7 +1521,7 @@ describe('Selection strategies test suite', () => {
     const workerChoiceStrategy = WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(
@@ -1529,7 +1547,7 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(
@@ -1558,7 +1576,7 @@ describe('Selection strategies test suite', () => {
   it('Verify WEIGHTED_ROUND_ROBIN strategy can be run in a fixed pool', async () => {
     const pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy: WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN }
     )
     // TODO: Create a better test to cover `WeightedRoundRobinWorkerChoiceStrategy#choose`
@@ -1575,6 +1593,7 @@ describe('Selection strategies test suite', () => {
           executing: 0,
           queued: 0,
           maxQueued: 0,
+          sequentiallyStolen: 0,
           stolen: 0,
           failed: 0
         },
@@ -1617,12 +1636,7 @@ describe('Selection strategies test suite', () => {
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
         pool.workerChoiceStrategyContext.workerChoiceStrategy
       ).previousWorkerNodeKey
-    ).toBe(0)
-    expect(
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        pool.workerChoiceStrategyContext.workerChoiceStrategy
-      ).defaultWorkerWeight
-    ).toBeGreaterThan(0)
+    ).toStrictEqual(expect.any(Number))
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
         pool.workerChoiceStrategyContext.workerChoiceStrategy
@@ -1636,7 +1650,7 @@ describe('Selection strategies test suite', () => {
     const pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy: WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN }
     )
     // TODO: Create a better test to cover `WeightedRoundRobinWorkerChoiceStrategy#choose`
@@ -1653,6 +1667,7 @@ describe('Selection strategies test suite', () => {
           executing: 0,
           queued: 0,
           maxQueued: 0,
+          sequentiallyStolen: 0,
           stolen: 0,
           failed: 0
         },
@@ -1695,12 +1710,7 @@ describe('Selection strategies test suite', () => {
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
         pool.workerChoiceStrategyContext.workerChoiceStrategy
       ).previousWorkerNodeKey
-    ).toBe(0)
-    expect(
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        pool.workerChoiceStrategyContext.workerChoiceStrategy
-      ).defaultWorkerWeight
-    ).toBeGreaterThan(0)
+    ).toStrictEqual(expect.any(Number))
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
         pool.workerChoiceStrategyContext.workerChoiceStrategy
@@ -1714,7 +1724,7 @@ describe('Selection strategies test suite', () => {
     const pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       {
         workerChoiceStrategy: WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN,
         workerChoiceStrategyOptions: {
@@ -1736,6 +1746,7 @@ describe('Selection strategies test suite', () => {
           executing: 0,
           queued: 0,
           maxQueued: 0,
+          sequentiallyStolen: 0,
           stolen: 0,
           failed: 0
         },
@@ -1779,11 +1790,6 @@ describe('Selection strategies test suite', () => {
         pool.workerChoiceStrategyContext.workerChoiceStrategy
       ).previousWorkerNodeKey
     ).toBe(0)
-    expect(
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        pool.workerChoiceStrategyContext.workerChoiceStrategy
-      ).defaultWorkerWeight
-    ).toBeGreaterThan(0)
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
         pool.workerChoiceStrategyContext.workerChoiceStrategy
@@ -1797,7 +1803,7 @@ describe('Selection strategies test suite', () => {
     const workerChoiceStrategy = WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js'
+      './tests/worker-files/thread/testWorker.mjs'
     )
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
@@ -1809,11 +1815,6 @@ describe('Selection strategies test suite', () => {
         workerChoiceStrategy
       ).previousWorkerNodeKey
     ).toBeDefined()
-    expect(
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        workerChoiceStrategy
-      ).defaultWorkerWeight
-    ).toBeDefined()
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
         workerChoiceStrategy
@@ -1830,11 +1831,6 @@ describe('Selection strategies test suite', () => {
         pool.workerChoiceStrategyContext.workerChoiceStrategy
       ).previousWorkerNodeKey
     ).toBe(0)
-    expect(
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        pool.workerChoiceStrategyContext.workerChoiceStrategy
-      ).defaultWorkerWeight
-    ).toBeGreaterThan(0)
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
         pool.workerChoiceStrategyContext.workerChoiceStrategy
@@ -1844,7 +1840,7 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js'
+      './tests/worker-files/thread/testWorker.mjs'
     )
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
@@ -1856,11 +1852,6 @@ describe('Selection strategies test suite', () => {
         workerChoiceStrategy
       ).previousWorkerNodeKey
     ).toBeDefined()
-    expect(
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        workerChoiceStrategy
-      ).defaultWorkerWeight
-    ).toBeDefined()
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
         workerChoiceStrategy
@@ -1877,11 +1868,6 @@ describe('Selection strategies test suite', () => {
         pool.workerChoiceStrategyContext.workerChoiceStrategy
       ).previousWorkerNodeKey
     ).toBe(0)
-    expect(
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        pool.workerChoiceStrategyContext.workerChoiceStrategy
-      ).defaultWorkerWeight
-    ).toBeGreaterThan(0)
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
         pool.workerChoiceStrategyContext.workerChoiceStrategy
@@ -1896,7 +1882,7 @@ describe('Selection strategies test suite', () => {
       WorkerChoiceStrategies.INTERLEAVED_WEIGHTED_ROUND_ROBIN
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(pool.workerChoiceStrategyContext.getStrategyPolicy()).toStrictEqual({
@@ -1907,7 +1893,7 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(pool.workerChoiceStrategyContext.getStrategyPolicy()).toStrictEqual({
@@ -1923,7 +1909,7 @@ describe('Selection strategies test suite', () => {
       WorkerChoiceStrategies.INTERLEAVED_WEIGHTED_ROUND_ROBIN
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(
@@ -1949,7 +1935,7 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       { workerChoiceStrategy }
     )
     expect(
@@ -1978,7 +1964,7 @@ describe('Selection strategies test suite', () => {
   it('Verify INTERLEAVED_WEIGHTED_ROUND_ROBIN strategy can be run in a fixed pool', async () => {
     const pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       {
         workerChoiceStrategy:
           WorkerChoiceStrategies.INTERLEAVED_WEIGHTED_ROUND_ROBIN
@@ -1998,6 +1984,7 @@ describe('Selection strategies test suite', () => {
           executing: 0,
           queued: 0,
           maxQueued: 0,
+          sequentiallyStolen: 0,
           stolen: 0,
           failed: 0
         },
@@ -2021,11 +2008,6 @@ describe('Selection strategies test suite', () => {
         max * maxMultiplier
       )
     }
-    expect(
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        pool.workerChoiceStrategyContext.workerChoiceStrategy
-      ).defaultWorkerWeight
-    ).toBeGreaterThan(0)
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
         pool.workerChoiceStrategyContext.workerChoiceStrategy
@@ -2049,12 +2031,8 @@ describe('Selection strategies test suite', () => {
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
         pool.workerChoiceStrategyContext.workerChoiceStrategy
-      ).roundWeights
-    ).toStrictEqual([
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        pool.workerChoiceStrategyContext.workerChoiceStrategy
-      ).defaultWorkerWeight
-    ])
+      ).roundWeights.length
+    ).toBe(1)
     // We need to clean up the resources after our test
     await pool.destroy()
   })
@@ -2063,7 +2041,7 @@ describe('Selection strategies test suite', () => {
     const pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js',
+      './tests/worker-files/thread/testWorker.mjs',
       {
         workerChoiceStrategy:
           WorkerChoiceStrategies.INTERLEAVED_WEIGHTED_ROUND_ROBIN
@@ -2083,6 +2061,7 @@ describe('Selection strategies test suite', () => {
           executing: 0,
           queued: 0,
           maxQueued: 0,
+          sequentiallyStolen: 0,
           stolen: 0,
           failed: 0
         },
@@ -2106,11 +2085,6 @@ describe('Selection strategies test suite', () => {
         max * maxMultiplier
       )
     }
-    expect(
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        pool.workerChoiceStrategyContext.workerChoiceStrategy
-      ).defaultWorkerWeight
-    ).toBeGreaterThan(0)
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
         pool.workerChoiceStrategyContext.workerChoiceStrategy
@@ -2134,12 +2108,8 @@ describe('Selection strategies test suite', () => {
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
         pool.workerChoiceStrategyContext.workerChoiceStrategy
-      ).roundWeights
-    ).toStrictEqual([
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        pool.workerChoiceStrategyContext.workerChoiceStrategy
-      ).defaultWorkerWeight
-    ])
+      ).roundWeights.length
+    ).toBe(1)
     // We need to clean up the resources after our test
     await pool.destroy()
   })
@@ -2149,7 +2119,7 @@ describe('Selection strategies test suite', () => {
       WorkerChoiceStrategies.INTERLEAVED_WEIGHTED_ROUND_ROBIN
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js'
+      './tests/worker-files/thread/testWorker.mjs'
     )
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
@@ -2171,11 +2141,6 @@ describe('Selection strategies test suite', () => {
         workerChoiceStrategy
       ).previousWorkerNodeKey
     ).toBeDefined()
-    expect(
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        workerChoiceStrategy
-      ).defaultWorkerWeight
-    ).toBeDefined()
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
         workerChoiceStrategy
@@ -2205,22 +2170,13 @@ describe('Selection strategies test suite', () => {
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
         pool.workerChoiceStrategyContext.workerChoiceStrategy
-      ).defaultWorkerWeight
-    ).toBeGreaterThan(0)
-    expect(
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        pool.workerChoiceStrategyContext.workerChoiceStrategy
-      ).roundWeights
-    ).toStrictEqual([
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        pool.workerChoiceStrategyContext.workerChoiceStrategy
-      ).defaultWorkerWeight
-    ])
+      ).roundWeights.length
+    ).toBe(1)
     await pool.destroy()
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js'
+      './tests/worker-files/thread/testWorker.mjs'
     )
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
@@ -2242,11 +2198,6 @@ describe('Selection strategies test suite', () => {
         workerChoiceStrategy
       ).previousWorkerNodeKey
     ).toBeDefined()
-    expect(
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        workerChoiceStrategy
-      ).defaultWorkerWeight
-    ).toBeDefined()
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
         workerChoiceStrategy
@@ -2276,17 +2227,8 @@ describe('Selection strategies test suite', () => {
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
         pool.workerChoiceStrategyContext.workerChoiceStrategy
-      ).defaultWorkerWeight
-    ).toBeGreaterThan(0)
-    expect(
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        pool.workerChoiceStrategyContext.workerChoiceStrategy
-      ).roundWeights
-    ).toStrictEqual([
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        pool.workerChoiceStrategyContext.workerChoiceStrategy
-      ).defaultWorkerWeight
-    ])
+      ).roundWeights.length
+    ).toBe(1)
     // We need to clean up the resources after our test
     await pool.destroy()
   })
@@ -2297,9 +2239,9 @@ describe('Selection strategies test suite', () => {
         new DynamicThreadPool(
           min,
           max,
-          './tests/worker-files/thread/testWorker.js',
+          './tests/worker-files/thread/testWorker.mjs',
           { workerChoiceStrategy: 'UNKNOWN_STRATEGY' }
         )
-    ).toThrowError("Invalid worker choice strategy 'UNKNOWN_STRATEGY'")
+    ).toThrow("Invalid worker choice strategy 'UNKNOWN_STRATEGY'")
   })
 })