import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
import { resolveUploadBatchExpiresAt } from '@/utils/upload/resolveUploadBatchExpiresAt';

describe('resolveUploadBatchExpiresAt', () => {
    beforeEach(() => {
        vi.useFakeTimers();
        vi.setSystemTime(new Date('2026-01-01T12:00:00.000Z'));
    });

    afterEach(() => {
        vi.useRealTimers();
    });

    it('returns null for never', () => {
        expect(resolveUploadBatchExpiresAt('never')).toBeNull();
    });

    it('adds preset offsets from the reference time', () => {
        expect(resolveUploadBatchExpiresAt('1h')).toBe('2026-01-01T13:00:00.000Z');
        expect(resolveUploadBatchExpiresAt('24h')).toBe('2026-01-02T12:00:00.000Z');
        expect(resolveUploadBatchExpiresAt('7d')).toBe('2026-01-08T12:00:00.000Z');
        expect(resolveUploadBatchExpiresAt('30d')).toBe('2026-01-31T12:00:00.000Z');
    });
});