I'm genuely interested, what kind of test could that be? Some tests they have gave me in several interviews:

  - Online shops.
  - Hackerrank questions.
  - Read from a big log file in an efficient manner with Python (did it but there was also a 3-4 hour on-site interview).

Any test that: 1) is similar to the work in the day-to-day role 2) doesn't require more than a 1-2 hour time commitment from a candidate 3) is interesting

HackerRank questions typically don't meet criteria 1 or 3. The best tests are often ones that the engineering team has designed themselves.

For example, this is an example of a test that meets all the criteria above: https://app.mightyacorn.io/flow-club/founding-front-end-engi...