Intlayer

import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'; import { formatTimeDiff } from './formatTimeDiff'; describe('formatTimeDiff', () => { const fixedNow = new Date('2025-01-01T00:00:00Z'); beforeEach(() => { // Use fake timers so "now" is deterministic across tests vi.useFakeTimers(); vi.setSystemTime(fixedNow); }); afterEach(() => { vi.useRealTimers(); }); it('formats differences containing days', () => { // 2 days, 3 hours, 4 minutes, 5 seconds ago const past = new Date( 2 * 24 * 60 * 60 * 1000 + // 2 days 3 * 60 * 60 * 1000 + // 3 hours 4 * 60 * 1000 + // 4 minutes 5 * 1000 // 5 seconds ); expect(formatTimeDiff(past)).toBe('2d 3h 4m 5s'); }); it('formats differences containing hours but no days', () => { // 3 hours, 15 minutes, 20 seconds ago const past = new Date(3 * 60 * 60 * 1000 + 15 * 60 * 1000 + 20 * 1000); expect(formatTimeDiff(past)).toBe('3h 15m 20s'); }); it('formats differences containing only minutes and seconds', () => { // 7 minutes, 45 seconds ago const past = new Date(7 * 60 * 1000 + 45 * 1000); expect(formatTimeDiff(past)).toBe('7m 45s'); }); });