Why always force the injection of pinia symbol during component tests?

[LuisMiguelFilipe]

Hello,

I recently switched to Pinia.

In my project I never call useStore inside .vue files.
Instead I have a composable file which does it internally.

In my test of a Vue Component I am doing setActivePinia but not createTestingPinia from `@pinia/testing'

All my composable-only tests work fine with setActivePinia only.
As far as I understand, since I do not invoke useStore from .vue files

I pin-pointed the behavior to this line
https://github.com/vuejs/pinia/blob/v2/packages/pinia/src/store.ts#L859

Shouldn't we check, beforehand, if an activePinia is already defined?
because on line 871 we are simply assigning pinia = activePinia

I actually tried to comment out that line of code and my test actually passes!

I guess I am missing some part of a bigger plan?
Could someone shed some light on the matter?