Testing an add-on on restart

Add-ons Development
1

Hi.

I am working on an add-on that performs an action when Fx updates. How could I test this?

If I install the .xpi using about:debugging, the add-on is removed on restart. Is there a better way that might work?

2

Have you tried What do I do to ensure I can test my extension? > to test restart behavior:

3

I have, but no luck. I installed ESR115, flipped all three prefs, installed the add-on, updated Fx, and the add-on was gone.

I cannot seem to make it persistent between updates.