I am writing a Telemetry probe and would like to be able to verify it is collected properly in a mochitest. After some headscratching and discussion with Vladan, it appears we don't have Telemetry enabled while running mochitests; it would be nice if we did.

We don't want to submit this telemetry data to the server, though, right?

I was just trying to write a mochitest for verifying telemetry and probably would have been very confused by things not being counted, so this is a timely bug.

(In reply to Mark Reid [:mreid] from comment #1) > We don't want to submit this telemetry data to the server, though, right? Correct (IMO).

Andrew, Vladan asked me to help with this if you have any question. How urgent is that work?

(In reply to David Rajchenbach-Teller [:Yoric] (use "needinfo") from comment #4) > Andrew, Vladan asked me to help with this if you have any question. How > urgent is that work? Oh, it's not. I'll land my probe without a test as it seems that's what's normally done :) But I'll watch here and add a test when this is ready. Thanks!

In the meantime, I believe that the following snippet is sufficient: let oldCanRecord = Services.telemetry.canRecord; Services.telemetry.canRecord = true; registerCleanupFunction(() => { Services.telemetry.canRecord = oldCanRecord; }); That's what I use in my test code that needs to play with Telemetry.

We already disable submission on non-official builds, and mochitests can enable telemetry collection.