fix: fix worker function type definition and validation

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

diff --git a/tests/pools/selection-strategies/selection-strategies.test.js b/tests/pools/selection-strategies/selection-strategies.test.js
index 796c84baba1feb68953e8dd24b3eb610ac898382..2fcbba5a95054b20311baa45892e26f24733b1fe 100644 (file)
--- a/tests/pools/selection-strategies/selection-strategies.test.js
+++ b/tests/pools/selection-strategies/selection-strategies.test.js
@@ -33,44 +33,103 @@ describe('Selection strategies test suite', () => {
     await pool.destroy()
   })
 
-  it('Verify ROUND_ROBIN strategy is taken at pool creation', async () => {
-    const pool = new FixedThreadPool(
-      max,
-      './tests/worker-files/thread/testWorker.js',
-      { workerChoiceStrategy: WorkerChoiceStrategies.ROUND_ROBIN }
-    )
-    expect(pool.opts.workerChoiceStrategy).toBe(
-      WorkerChoiceStrategies.ROUND_ROBIN
-    )
-    expect(
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.ROUND_ROBIN
-      ).nextWorkerNodeId
-    ).toBe(0)
-    // We need to clean up the resources after our test
-    await pool.destroy()
+  it('Verify available strategies are taken at pool creation', async () => {
+    for (const workerChoiceStrategy of Object.values(WorkerChoiceStrategies)) {
+      const pool = new FixedThreadPool(
+        max,
+        './tests/worker-files/thread/testWorker.js',
+        { workerChoiceStrategy }
+      )
+      expect(pool.opts.workerChoiceStrategy).toBe(workerChoiceStrategy)
+      expect(pool.workerChoiceStrategyContext.workerChoiceStrategy).toBe(
+        workerChoiceStrategy
+      )
+      await pool.destroy()
+    }
   })
 
-  it('Verify ROUND_ROBIN strategy can be set after pool creation', async () => {
-    const pool = new DynamicThreadPool(
-      min,
+  it('Verify available strategies can be set after pool creation', async () => {
+    for (const workerChoiceStrategy of Object.values(WorkerChoiceStrategies)) {
+      const pool = new DynamicThreadPool(
+        min,
+        max,
+        './tests/worker-files/thread/testWorker.js'
+      )
+      pool.setWorkerChoiceStrategy(workerChoiceStrategy)
+      expect(pool.opts.workerChoiceStrategy).toBe(workerChoiceStrategy)
+      expect(pool.workerChoiceStrategyContext.workerChoiceStrategy).toBe(
+        workerChoiceStrategy
+      )
+      await pool.destroy()
+    }
+  })
+
+  it('Verify available strategies default internals at pool creation', async () => {
+    const pool = new FixedThreadPool(
       max,
       './tests/worker-files/thread/testWorker.js'
     )
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.ROUND_ROBIN)
-    expect(pool.opts.workerChoiceStrategy).toBe(
-      WorkerChoiceStrategies.ROUND_ROBIN
-    )
-    // We need to clean up the resources after our test
+    for (const workerChoiceStrategy of Object.values(WorkerChoiceStrategies)) {
+      if (workerChoiceStrategy === WorkerChoiceStrategies.ROUND_ROBIN) {
+        expect(
+          pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
+            workerChoiceStrategy
+          ).nextWorkerNodeId
+        ).toBe(0)
+      } else if (workerChoiceStrategy === WorkerChoiceStrategies.FAIR_SHARE) {
+        for (const workerNodeKey of pool.workerChoiceStrategyContext.workerChoiceStrategies
+          .get(workerChoiceStrategy)
+          .workerLastVirtualTaskTimestamp.keys()) {
+          expect(
+            pool.workerChoiceStrategyContext.workerChoiceStrategies
+              .get(workerChoiceStrategy)
+              .workerLastVirtualTaskTimestamp.get(workerNodeKey).start
+          ).toBe(0)
+          expect(
+            pool.workerChoiceStrategyContext.workerChoiceStrategies
+              .get(workerChoiceStrategy)
+              .workerLastVirtualTaskTimestamp.get(workerNodeKey).end
+          ).toBe(0)
+        }
+      } else if (
+        workerChoiceStrategy === WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
+      ) {
+        expect(
+          pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
+            workerChoiceStrategy
+          ).currentWorkerNodeId
+        ).toBe(0)
+        expect(
+          pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
+            workerChoiceStrategy
+          ).defaultWorkerWeight
+        ).toBeGreaterThan(0)
+        for (const workerNodeKey of pool.workerChoiceStrategyContext.workerChoiceStrategies
+          .get(workerChoiceStrategy)
+          .workersTaskRunTime.keys()) {
+          expect(
+            pool.workerChoiceStrategyContext.workerChoiceStrategies
+              .get(workerChoiceStrategy)
+              .workersTaskRunTime.get(workerNodeKey).weight
+          ).toBeGreaterThan(0)
+          expect(
+            pool.workerChoiceStrategyContext.workerChoiceStrategies
+              .get(workerChoiceStrategy)
+              .workersTaskRunTime.get(workerNodeKey).runTime
+          ).toBe(0)
+        }
+      }
+    }
     await pool.destroy()
   })
 
   it('Verify ROUND_ROBIN strategy default tasks usage statistics requirements', async () => {
+    const workerChoiceStrategy = WorkerChoiceStrategies.ROUND_ROBIN
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js'
+      './tests/worker-files/thread/testWorker.js',
+      { workerChoiceStrategy }
     )
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.ROUND_ROBIN)
     expect(
       pool.workerChoiceStrategyContext.getRequiredStatistics().runTime
     ).toBe(false)
@@ -84,9 +143,9 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js'
+      './tests/worker-files/thread/testWorker.js',
+      { workerChoiceStrategy }
     )
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.ROUND_ROBIN)
     expect(
       pool.workerChoiceStrategyContext.getRequiredStatistics().runTime
     ).toBe(false)
@@ -106,9 +165,6 @@ describe('Selection strategies test suite', () => {
       './tests/worker-files/thread/testWorker.js',
       { workerChoiceStrategy: WorkerChoiceStrategies.ROUND_ROBIN }
     )
-    expect(pool.opts.workerChoiceStrategy).toBe(
-      WorkerChoiceStrategies.ROUND_ROBIN
-    )
     // TODO: Create a better test to cover `RoundRobinWorkerChoiceStrategy#choose`
     const promises = []
     for (let i = 0; i < max * 2; i++) {
@@ -126,9 +182,6 @@ describe('Selection strategies test suite', () => {
       './tests/worker-files/thread/testWorker.js',
       { workerChoiceStrategy: WorkerChoiceStrategies.ROUND_ROBIN }
     )
-    expect(pool.opts.workerChoiceStrategy).toBe(
-      WorkerChoiceStrategies.ROUND_ROBIN
-    )
     // TODO: Create a better test to cover `RoundRobinWorkerChoiceStrategy#choose`
     const promises = []
     for (let i = 0; i < max * 2; i++) {
@@ -140,26 +193,33 @@ describe('Selection strategies test suite', () => {
   })
 
   it('Verify ROUND_ROBIN strategy runtime behavior', async () => {
+    const workerChoiceStrategy = WorkerChoiceStrategies.ROUND_ROBIN
     let pool = new FixedClusterPool(
       max,
-      './tests/worker-files/cluster/testWorker.js'
+      './tests/worker-files/cluster/testWorker.js',
+      { workerChoiceStrategy }
     )
     let results = new Set()
     for (let i = 0; i < max; i++) {
-      results.add(pool.chooseWorker()[1].id)
+      results.add(pool.chooseWorkerNode()[1].worker.id)
     }
     expect(results.size).toBe(max)
     await pool.destroy()
-    pool = new FixedThreadPool(max, './tests/worker-files/thread/testWorker.js')
+    pool = new FixedThreadPool(
+      max,
+      './tests/worker-files/thread/testWorker.js',
+      { workerChoiceStrategy }
+    )
     results = new Set()
     for (let i = 0; i < max; i++) {
-      results.add(pool.chooseWorker()[1].threadId)
+      results.add(pool.chooseWorkerNode()[1].worker.threadId)
     }
     expect(results.size).toBe(max)
     await pool.destroy()
   })
 
   it('Verify ROUND_ROBIN strategy internals are resets after setting it', async () => {
+    const workerChoiceStrategy = WorkerChoiceStrategies.ROUND_ROBIN
     let pool = new FixedThreadPool(
       max,
       './tests/worker-files/thread/testWorker.js',
@@ -167,13 +227,13 @@ describe('Selection strategies test suite', () => {
     )
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.ROUND_ROBIN
+        workerChoiceStrategy
       ).nextWorkerNodeId
     ).toBeDefined()
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.ROUND_ROBIN)
+    pool.setWorkerChoiceStrategy(workerChoiceStrategy)
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.ROUND_ROBIN
+        pool.workerChoiceStrategyContext.workerChoiceStrategy
       ).nextWorkerNodeId
     ).toBe(0)
     await pool.destroy()
@@ -185,51 +245,26 @@ describe('Selection strategies test suite', () => {
     )
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.ROUND_ROBIN
+        workerChoiceStrategy
       ).nextWorkerNodeId
     ).toBeDefined()
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.ROUND_ROBIN)
+    pool.setWorkerChoiceStrategy(workerChoiceStrategy)
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.ROUND_ROBIN
+        pool.workerChoiceStrategyContext.workerChoiceStrategy
       ).nextWorkerNodeId
     ).toBe(0)
     // We need to clean up the resources after our test
     await pool.destroy()
   })
 
-  it('Verify LESS_USED strategy is taken at pool creation', async () => {
-    const pool = new FixedThreadPool(
-      max,
-      './tests/worker-files/thread/testWorker.js',
-      { workerChoiceStrategy: WorkerChoiceStrategies.LESS_USED }
-    )
-    expect(pool.opts.workerChoiceStrategy).toBe(
-      WorkerChoiceStrategies.LESS_USED
-    )
-    // We need to clean up the resources after our test
-    await pool.destroy()
-  })
-
-  it('Verify LESS_USED strategy can be set after pool creation', async () => {
-    const pool = new FixedThreadPool(
-      max,
-      './tests/worker-files/thread/testWorker.js'
-    )
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.LESS_USED)
-    expect(pool.opts.workerChoiceStrategy).toBe(
-      WorkerChoiceStrategies.LESS_USED
-    )
-    // We need to clean up the resources after our test
-    await pool.destroy()
-  })
-
   it('Verify LESS_USED strategy default tasks usage statistics requirements', async () => {
+    const workerChoiceStrategy = WorkerChoiceStrategies.LESS_USED
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js'
+      './tests/worker-files/thread/testWorker.js',
+      { workerChoiceStrategy }
     )
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.LESS_USED)
     expect(
       pool.workerChoiceStrategyContext.getRequiredStatistics().runTime
     ).toBe(false)
@@ -243,9 +278,9 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js'
+      './tests/worker-files/thread/testWorker.js',
+      { workerChoiceStrategy }
     )
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.LESS_USED)
     expect(
       pool.workerChoiceStrategyContext.getRequiredStatistics().runTime
     ).toBe(false)
@@ -292,38 +327,13 @@ describe('Selection strategies test suite', () => {
     await pool.destroy()
   })
 
-  it('Verify LESS_BUSY strategy is taken at pool creation', async () => {
-    const pool = new FixedThreadPool(
-      max,
-      './tests/worker-files/thread/testWorker.js',
-      { workerChoiceStrategy: WorkerChoiceStrategies.LESS_BUSY }
-    )
-    expect(pool.opts.workerChoiceStrategy).toBe(
-      WorkerChoiceStrategies.LESS_BUSY
-    )
-    // We need to clean up the resources after our test
-    await pool.destroy()
-  })
-
-  it('Verify LESS_BUSY strategy can be set after pool creation', async () => {
-    const pool = new FixedThreadPool(
-      max,
-      './tests/worker-files/thread/testWorker.js'
-    )
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.LESS_BUSY)
-    expect(pool.opts.workerChoiceStrategy).toBe(
-      WorkerChoiceStrategies.LESS_BUSY
-    )
-    // We need to clean up the resources after our test
-    await pool.destroy()
-  })
-
   it('Verify LESS_BUSY strategy default tasks usage statistics requirements', async () => {
+    const workerChoiceStrategy = WorkerChoiceStrategies.LESS_BUSY
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js'
+      './tests/worker-files/thread/testWorker.js',
+      { workerChoiceStrategy }
     )
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.LESS_BUSY)
     expect(
       pool.workerChoiceStrategyContext.getRequiredStatistics().runTime
     ).toBe(true)
@@ -337,9 +347,9 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js'
+      './tests/worker-files/thread/testWorker.js',
+      { workerChoiceStrategy }
     )
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.LESS_BUSY)
     expect(
       pool.workerChoiceStrategyContext.getRequiredStatistics().runTime
     ).toBe(true)
@@ -386,52 +396,13 @@ describe('Selection strategies test suite', () => {
     await pool.destroy()
   })
 
-  it('Verify FAIR_SHARE strategy is taken at pool creation', async () => {
-    const pool = new FixedThreadPool(
-      max,
-      './tests/worker-files/thread/testWorker.js',
-      { workerChoiceStrategy: WorkerChoiceStrategies.FAIR_SHARE }
-    )
-    expect(pool.opts.workerChoiceStrategy).toBe(
-      WorkerChoiceStrategies.FAIR_SHARE
-    )
-    for (const workerNodeKey of pool.workerChoiceStrategyContext.workerChoiceStrategies
-      .get(WorkerChoiceStrategies.FAIR_SHARE)
-      .workerLastVirtualTaskTimestamp.keys()) {
-      expect(
-        pool.workerChoiceStrategyContext.workerChoiceStrategies
-          .get(WorkerChoiceStrategies.FAIR_SHARE)
-          .workerLastVirtualTaskTimestamp.get(workerNodeKey).start
-      ).toBe(0)
-      expect(
-        pool.workerChoiceStrategyContext.workerChoiceStrategies
-          .get(WorkerChoiceStrategies.FAIR_SHARE)
-          .workerLastVirtualTaskTimestamp.get(workerNodeKey).end
-      ).toBe(0)
-    }
-    // We need to clean up the resources after our test
-    await pool.destroy()
-  })
-
-  it('Verify FAIR_SHARE strategy can be set after pool creation', async () => {
-    const pool = new FixedThreadPool(
-      max,
-      './tests/worker-files/thread/testWorker.js'
-    )
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.FAIR_SHARE)
-    expect(pool.opts.workerChoiceStrategy).toBe(
-      WorkerChoiceStrategies.FAIR_SHARE
-    )
-    // We need to clean up the resources after our test
-    await pool.destroy()
-  })
-
   it('Verify FAIR_SHARE strategy default tasks usage statistics requirements', async () => {
+    const workerChoiceStrategy = WorkerChoiceStrategies.FAIR_SHARE
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js'
+      './tests/worker-files/thread/testWorker.js',
+      { workerChoiceStrategy }
     )
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.FAIR_SHARE)
     expect(
       pool.workerChoiceStrategyContext.getRequiredStatistics().runTime
     ).toBe(true)
@@ -445,9 +416,9 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js'
+      './tests/worker-files/thread/testWorker.js',
+      { workerChoiceStrategy }
     )
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.FAIR_SHARE)
     expect(
       pool.workerChoiceStrategyContext.getRequiredStatistics().runTime
     ).toBe(true)
@@ -475,7 +446,7 @@ describe('Selection strategies test suite', () => {
     await Promise.all(promises)
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.FAIR_SHARE
+        pool.workerChoiceStrategyContext.workerChoiceStrategy
       ).workerLastVirtualTaskTimestamp.size
     ).toBe(pool.workerNodes.length)
     // We need to clean up the resources after our test
@@ -499,7 +470,7 @@ describe('Selection strategies test suite', () => {
     // if (process.platform !== 'win32') {
     //   expect(
     //     pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-    //       WorkerChoiceStrategies.FAIR_SHARE
+    //       pool.workerChoiceStrategyContext.workerChoiceStrategy
     //     ).workerLastVirtualTaskTimestamp.size
     //   ).toBe(pool.workerNodes.length)
     // }
@@ -508,27 +479,28 @@ describe('Selection strategies test suite', () => {
   })
 
   it('Verify FAIR_SHARE strategy internals are resets after setting it', async () => {
+    const workerChoiceStrategy = WorkerChoiceStrategies.FAIR_SHARE
     let pool = new FixedThreadPool(
       max,
       './tests/worker-files/thread/testWorker.js'
     )
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.FAIR_SHARE
+        workerChoiceStrategy
       ).workerLastVirtualTaskTimestamp
     ).toBeDefined()
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.FAIR_SHARE)
+    pool.setWorkerChoiceStrategy(workerChoiceStrategy)
     for (const workerNodeKey of pool.workerChoiceStrategyContext.workerChoiceStrategies
-      .get(WorkerChoiceStrategies.FAIR_SHARE)
+      .get(pool.workerChoiceStrategyContext.workerChoiceStrategy)
       .workerLastVirtualTaskTimestamp.keys()) {
       expect(
         pool.workerChoiceStrategyContext.workerChoiceStrategies
-          .get(WorkerChoiceStrategies.FAIR_SHARE)
+          .get(pool.workerChoiceStrategyContext.workerChoiceStrategy)
           .workerLastVirtualTaskTimestamp.get(workerNodeKey).start
       ).toBe(0)
       expect(
         pool.workerChoiceStrategyContext.workerChoiceStrategies
-          .get(WorkerChoiceStrategies.FAIR_SHARE)
+          .get(pool.workerChoiceStrategyContext.workerChoiceStrategy)
           .workerLastVirtualTaskTimestamp.get(workerNodeKey).end
       ).toBe(0)
     }
@@ -540,21 +512,21 @@ describe('Selection strategies test suite', () => {
     )
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.FAIR_SHARE
+        workerChoiceStrategy
       ).workerLastVirtualTaskTimestamp
     ).toBeDefined()
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.FAIR_SHARE)
+    pool.setWorkerChoiceStrategy(workerChoiceStrategy)
     for (const workerNodeKey of pool.workerChoiceStrategyContext.workerChoiceStrategies
-      .get(WorkerChoiceStrategies.FAIR_SHARE)
+      .get(pool.workerChoiceStrategyContext.workerChoiceStrategy)
       .workerLastVirtualTaskTimestamp.keys()) {
       expect(
         pool.workerChoiceStrategyContext.workerChoiceStrategies
-          .get(WorkerChoiceStrategies.FAIR_SHARE)
+          .get(pool.workerChoiceStrategyContext.workerChoiceStrategy)
           .workerLastVirtualTaskTimestamp.get(workerNodeKey).start
       ).toBe(0)
       expect(
         pool.workerChoiceStrategyContext.workerChoiceStrategies
-          .get(WorkerChoiceStrategies.FAIR_SHARE)
+          .get(pool.workerChoiceStrategyContext.workerChoiceStrategy)
           .workerLastVirtualTaskTimestamp.get(workerNodeKey).end
       ).toBe(0)
     }
@@ -562,62 +534,13 @@ describe('Selection strategies test suite', () => {
     await pool.destroy()
   })
 
-  it('Verify WEIGHTED_ROUND_ROBIN strategy is taken at pool creation', async () => {
-    const pool = new FixedThreadPool(
-      max,
-      './tests/worker-files/thread/testWorker.js',
-      { workerChoiceStrategy: WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN }
-    )
-    expect(pool.opts.workerChoiceStrategy).toBe(
-      WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
-    )
-    expect(
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
-      ).currentWorkerNodeId
-    ).toBe(0)
-    expect(
-      pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
-      ).defaultWorkerWeight
-    ).toBeGreaterThan(0)
-    for (const workerNodeKey of pool.workerChoiceStrategyContext.workerChoiceStrategies
-      .get(WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN)
-      .workersTaskRunTime.keys()) {
-      expect(
-        pool.workerChoiceStrategyContext.workerChoiceStrategies
-          .get(WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN)
-          .workersTaskRunTime.get(workerNodeKey).weight
-      ).toBeGreaterThan(0)
-      expect(
-        pool.workerChoiceStrategyContext.workerChoiceStrategies
-          .get(WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN)
-          .workersTaskRunTime.get(workerNodeKey).runTime
-      ).toBe(0)
-    }
-    // We need to clean up the resources after our test
-    await pool.destroy()
-  })
-
-  it('Verify WEIGHTED_ROUND_ROBIN strategy can be set after pool creation', async () => {
-    const pool = new FixedThreadPool(
-      max,
-      './tests/worker-files/thread/testWorker.js'
-    )
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN)
-    expect(pool.opts.workerChoiceStrategy).toBe(
-      WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
-    )
-    // We need to clean up the resources after our test
-    await pool.destroy()
-  })
-
   it('Verify WEIGHTED_ROUND_ROBIN strategy default tasks usage statistics requirements', async () => {
+    const workerChoiceStrategy = WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
     let pool = new FixedThreadPool(
       max,
-      './tests/worker-files/thread/testWorker.js'
+      './tests/worker-files/thread/testWorker.js',
+      { workerChoiceStrategy }
     )
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN)
     expect(
       pool.workerChoiceStrategyContext.getRequiredStatistics().runTime
     ).toBe(true)
@@ -631,9 +554,9 @@ describe('Selection strategies test suite', () => {
     pool = new DynamicThreadPool(
       min,
       max,
-      './tests/worker-files/thread/testWorker.js'
+      './tests/worker-files/thread/testWorker.js',
+      { workerChoiceStrategy }
     )
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN)
     expect(
       pool.workerChoiceStrategyContext.getRequiredStatistics().runTime
     ).toBe(true)
@@ -661,7 +584,7 @@ describe('Selection strategies test suite', () => {
     await Promise.all(promises)
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
+        pool.workerChoiceStrategyContext.workerChoiceStrategy
       ).workersTaskRunTime.size
     ).toBe(pool.workerNodes.length)
     // We need to clean up the resources after our test
@@ -679,7 +602,7 @@ describe('Selection strategies test suite', () => {
     const promises = []
     const maxMultiplier =
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
+        pool.workerChoiceStrategyContext.workerChoiceStrategy
       ).defaultWorkerWeight * 50
     for (let i = 0; i < max * maxMultiplier; i++) {
       promises.push(pool.execute())
@@ -688,7 +611,7 @@ describe('Selection strategies test suite', () => {
     if (process.platform !== 'win32') {
       expect(
         pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-          WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
+          pool.workerChoiceStrategyContext.workerChoiceStrategy
         ).workersTaskRunTime.size
       ).toBe(pool.workerNodes.length)
     }
@@ -697,42 +620,43 @@ describe('Selection strategies test suite', () => {
   })
 
   it('Verify WEIGHTED_ROUND_ROBIN strategy internals are resets after setting it', async () => {
+    const workerChoiceStrategy = WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
     let pool = new FixedThreadPool(
       max,
       './tests/worker-files/thread/testWorker.js'
     )
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
+        workerChoiceStrategy
       ).currentWorkerNodeId
     ).toBeDefined()
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
+        workerChoiceStrategy
       ).defaultWorkerWeight
     ).toBeDefined()
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
+        workerChoiceStrategy
       ).workersTaskRunTime
     ).toBeDefined()
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN)
+    pool.setWorkerChoiceStrategy(workerChoiceStrategy)
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
+        pool.workerChoiceStrategyContext.workerChoiceStrategy
       ).currentWorkerNodeId
     ).toBe(0)
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
+        pool.workerChoiceStrategyContext.workerChoiceStrategy
       ).defaultWorkerWeight
     ).toBeGreaterThan(0)
     for (const workerNodeKey of pool.workerChoiceStrategyContext.workerChoiceStrategies
-      .get(WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN)
+      .get(pool.workerChoiceStrategyContext.workerChoiceStrategy)
       .workersTaskRunTime.keys()) {
       expect(
         pool.workerChoiceStrategyContext.workerChoiceStrategies
-          .get(WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN)
+          .get(pool.workerChoiceStrategyContext.workerChoiceStrategy)
           .workersTaskRunTime.get(workerNodeKey).runTime
       ).toBe(0)
     }
@@ -744,36 +668,36 @@ describe('Selection strategies test suite', () => {
     )
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
+        workerChoiceStrategy
       ).currentWorkerNodeId
     ).toBeDefined()
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
+        workerChoiceStrategy
       ).defaultWorkerWeight
     ).toBeDefined()
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
+        workerChoiceStrategy
       ).workersTaskRunTime
     ).toBeDefined()
-    pool.setWorkerChoiceStrategy(WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN)
+    pool.setWorkerChoiceStrategy(workerChoiceStrategy)
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
+        pool.workerChoiceStrategyContext.workerChoiceStrategy
       ).currentWorkerNodeId
     ).toBe(0)
     expect(
       pool.workerChoiceStrategyContext.workerChoiceStrategies.get(
-        WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN
+        pool.workerChoiceStrategyContext.workerChoiceStrategy
       ).defaultWorkerWeight
     ).toBeGreaterThan(0)
     for (const workerNodeKey of pool.workerChoiceStrategyContext.workerChoiceStrategies
-      .get(WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN)
+      .get(pool.workerChoiceStrategyContext.workerChoiceStrategy)
       .workersTaskRunTime.keys()) {
       expect(
         pool.workerChoiceStrategyContext.workerChoiceStrategies
-          .get(WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN)
+          .get(pool.workerChoiceStrategyContext.workerChoiceStrategy)
           .workersTaskRunTime.get(workerNodeKey).runTime
       ).toBe(0)
     }
@@ -781,7 +705,7 @@ describe('Selection strategies test suite', () => {
     await pool.destroy()
   })
 
-  it('Verify unknown strategies throw error', () => {
+  it('Verify unknown strategy throw error', () => {
     expect(
       () =>
         new DynamicThreadPool(
@@ -790,8 +714,6 @@ describe('Selection strategies test suite', () => {
           './tests/worker-files/thread/testWorker.js',
           { workerChoiceStrategy: 'UNKNOWN_STRATEGY' }
         )
-    ).toThrowError(
-      new Error("Invalid worker choice strategy 'UNKNOWN_STRATEGY'")
-    )
+    ).toThrowError("Invalid worker choice strategy 'UNKNOWN_STRATEGY'")
   })
 })