I am using a ttl cache library to cache my data and let it expire after a certain duration.

import TTLCache from '@isaacs/ttlcache';

const DATA_KEY = 'barks';

const dataCache = new TTLCache({ ttl: 60_000, checkAgeOnGet: true, max: 1 });

export const getCachedData = async (): Promise<string> => {
    if (!dataCache.has(DATA_KEY)) {
        dataCache.set(DATA_KEY, 'new-item');
    }

    console.log('remainingTTL', dataCache.getRemainingTTL(DATA_KEY));

    return dataCache.get(DATA_KEY);
};

I want to test what happens after the ttl expires, thus the need to use the jest fake timers but I cannot get the timer to advance beyond the ttl expiry:

jest.useFakeTimers();

describe('ttlCaching', () => {
    test('Return undefined when ttl has expired', async () => {
        expect(await getCachedData()).toEqual('new-item');

        jest.advanceTimersByTime(100_000);

        expect(await getCachedData()).toEqual(undefined);
    });
});

When logging the ttl, the ttl has not expired yet I am advancing the timers.