600 is not a valid value for at. at must be epoch seconds, so the value should always be over one billion.

You are correct, enqueued_at should be mutually exclusive with at since scheduling does not enqueue (unless the schedule time is less than now!).

@mperham I'm going down a rabbit hole and getting more confused in this hole 🐰

600 is not a valid value for at. at must be epoch seconds, so the value should always be over one billion.

Understood. But I copy-pasted it from the test above 😅

scheduling does not enqueue (unless the schedule time is less than now!).

If you look at the existing test above it proves exactly the opposite for push_bulk:

1. 'at' => 600
2. we push two jobs
3. and the scheduled set grows by 2
4. I checked and Time.now is not mocked in this test

Is this a bug with a test passing by mistake or am I missing something obvious in my rabbit hole?

Ok, find and fix what you can.