27 lines
688 B
TypeScript
27 lines
688 B
TypeScript
import { WorkerPool } from '../src/index.js';
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import { waitFor } from './helpers.js';
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describe('WorkerPool', () => {
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it('respects concurrency limits', async () => {
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const pool = new WorkerPool(2);
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let active = 0;
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let maxActive = 0;
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const tasks = Array.from({ length: 5 }, (_, index) =>
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pool.run(async () => {
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active += 1;
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maxActive = Math.max(maxActive, active);
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await new Promise((resolve) => {
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setTimeout(resolve, 20 + index);
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});
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active -= 1;
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}),
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);
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await Promise.all(tasks);
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await waitFor(() => pool.activeCount === 0 && pool.pendingCount === 0);
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expect(maxActive).toBe(2);
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});
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});
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