X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=tests%2Fpools%2Fcluster%2Fdynamic.test.mjs;h=540223bf2840ab384e11d4b077a5f84cd27a8144;hb=03642ccf95f4fd58f39f8e141bafa38b60d8f5f5;hp=8c9196d1e9976db770a21865853187a862d34a00;hpb=d35e571704515a8b729d3455e4784054f07c368f;p=poolifier.git

diff --git a/tests/pools/cluster/dynamic.test.mjs b/tests/pools/cluster/dynamic.test.mjs
index 8c9196d1..540223bf 100644
--- a/tests/pools/cluster/dynamic.test.mjs
+++ b/tests/pools/cluster/dynamic.test.mjs
@@ -1,7 +1,11 @@
 import { expect } from 'expect'
-import { DynamicClusterPool, PoolEvents } from '../../../lib/index.cjs'
+import {
+  DynamicClusterPool,
+  PoolEvents,
+  WorkerChoiceStrategies
+} from '../../../lib/index.cjs'
 import { TaskFunctions } from '../../test-types.cjs'
-import { sleep, waitWorkerEvents } from '../../test-utils.cjs'
+import { sleep, waitPoolEvents, waitWorkerEvents } from '../../test-utils.cjs'
 
 describe('Dynamic cluster pool test suite', () => {
   const min = 1
@@ -152,4 +156,37 @@ describe('Dynamic cluster pool test suite', () => {
     // We need to clean up the resources after our test
     await pool.destroy()
   })
+
+  it('Verify that a pool with zero worker works', async () => {
+    for (const workerChoiceStrategy of Object.values(WorkerChoiceStrategies)) {
+      const pool = new DynamicClusterPool(
+        0,
+        max,
+        './tests/worker-files/cluster/testWorker.cjs',
+        {
+          workerChoiceStrategy
+        }
+      )
+      expect(pool.starting).toBe(false)
+      expect(pool.readyEventEmitted).toBe(false)
+      for (let run = 0; run < 2; run++) {
+        run % 2 !== 0 && pool.enableTasksQueue(true)
+        const maxMultiplier = 4
+        const promises = new Set()
+        expect(pool.workerNodes.length).toBe(pool.info.minSize)
+        for (let i = 0; i < max * maxMultiplier; i++) {
+          promises.add(pool.execute())
+        }
+        await Promise.all(promises)
+        expect(pool.readyEventEmitted).toBe(true)
+        expect(pool.workerNodes.length).toBeGreaterThan(pool.info.minSize)
+        expect(pool.workerNodes.length).toBeLessThanOrEqual(pool.info.maxSize)
+        await waitPoolEvents(pool, PoolEvents.empty, 1)
+        expect(pool.readyEventEmitted).toBe(false)
+        expect(pool.workerNodes.length).toBe(pool.info.minSize)
+      }
+      // We need to clean up the resources after our test
+      await pool.destroy()
+    }
+  })
 })