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import { describe, it, expect } from 'vitest'; import { parallelLimit, settleAll } from '../../src/utils/promiseUtils.js'; describe('promiseUtils', () => { it('parallelLimit preserves order and respects limit', async () => { const items = [1, 2, 3, 4, 5]; const calls: number[] = []; const start = Date.now(); const results = await parallelLimit(items, 2, async (n) => { calls.push(n); await new Promise((r) => setTimeout(r, 10)); return n * 2; }); const duration = Date.now() - start; expect(results).toEqual([2, 4, 6, 8, 10]); expect(calls.length).toBe(5); expect(duration).toBeGreaterThanOrEqual(30); // executed in batches }); it('settleAll returns both fulfilled and rejected results', async () => { const promises = [ Promise.resolve(1), Promise.reject(new Error('nope')), Promise.resolve(3), ]; const results = await settleAll(promises); const statuses = results.map((r) => r.status); expect(statuses.sort()).toEqual(['fulfilled', 'fulfilled', 'rejected'].sort()); }); });