workspace/mega-test/node_modules/simple-update-notifier/src/cache.spec.ts

import { createConfigDir, getLastUpdate, saveLastUpdate } from './cache';

createConfigDir();

jest.useFakeTimers().setSystemTime(new Date('2022-01-01'));

const fakeTime = new Date('2022-01-01').getTime();

test('can save update then get the update details', () => {
  saveLastUpdate('test');
  expect(getLastUpdate('test')).toBe(fakeTime);
});

test('prefixed module can save update then get the update details', () => {
  saveLastUpdate('@alexbrazier/test');
  expect(getLastUpdate('@alexbrazier/test')).toBe(fakeTime);
});