Spinner during VU init?

[ragnarlonn]

VU init at the start of a test can take many seconds to complete, during which a new user may think k6 has failed/frozen as there is no feedback.

Feature Description

I propose using a simple ASCII spinner ("|", "/", "-", "") to show the user that work is being done.

[na--]

This has already been mostly solved in #1007, we have a progress bar that measures VU initialization progress there. And we initialize VUs concurrently instead of sequentially, so it usually happens way faster 😄

@imiric is actively working on prettifying the progressbars for that PR even more right now #1310! Take a look at how it is like when you initialize and run different tests with the code from that branch:

(ignore the context cancelled errors, we know how to solve that thorny issue: #1283)

[na--]

That said, we actually plan to add a spinner, only it will probably be when an executor is running: #1310 (comment)

[na--]

@ragnarlonn, closing this for now, but feel free to re-open, or comment in the other issues/PRs that I linked to, if you think something could be further improved 🙂