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CHEVALLIER Abel cb235644dc init
2025-11-13 16:23:22 +01:00

55 lines
1.7 KiB
TypeScript

import assert from 'node:assert';
import { test } from 'node:test';
import { resolve } from 'node:path';
import Piscina from '../dist';
test('workers are marked as destroyed if destroyed', async () => {
let index = 0;
// Its expected to have one task get balanced twice due to the load balancer distribution
// first task enters, its distributed; second is enqueued, once first is done, second is distributed and normalizes
let workersFirstRound = [];
let workersSecondRound = [];
const pool = new Piscina({
filename: resolve(__dirname, 'fixtures/eval.js'),
minThreads: 2,
maxThreads: 2,
concurrentTasksPerWorker: 1,
loadBalancer (_task, workers) {
if (workersFirstRound.length === 0) {
workersFirstRound = workers;
workersSecondRound = workers;
} else if (
workersFirstRound[0].id !== workers[0].id
) {
workersSecondRound = workers;
}
// Verify distribution to properly test this feature
const candidate = workers[index++ % workers.length];
if (candidate.currentUsage !== 0 && !candidate.isRunningAbortableTask) {
return null;
}
return candidate;
}
});
const tasks = [];
const controller = new AbortController();
const signal = controller.signal;
tasks.push(pool.run('while (true) {}', {
signal
}));
for (let n = 0; n < 5; n++) {
tasks.push(pool.run('new Promise(resolve => setTimeout(resolve, 5))'));
}
controller.abort();
await Promise.allSettled(tasks);
assert.notStrictEqual(workersFirstRound, workersSecondRound);
assert.strictEqual(workersFirstRound.length, 2);
assert.ok(workersFirstRound[0].destroyed);
assert.ok(!workersFirstRound[0].terminating);
});