1627652 - "Undefined" message is received when running manual snippets for cookie clearance

Status: RESOLVED INVALID

(Core :: Privacy: Anti-Tracking, defect)

Description

[Simona Badau, Desktop QA]

Attachment: 2020-04-06_14h49_25.png

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:76.0) Gecko/20100101 Firefox/76.0
Build ID: 20200406092400

Affected versions

• Nightly 76.0a1

Affected platforms

• all

Prerequisites

• Go to about:config and set the preferences:
  -- privacy.purge_trackers.enabled = true.
  -- privacy.purge_trackers.logging.level = All

• Make sure that in the Settings of the Web Console, "Enabled browser chrome and add-on debugging toolboxes" is checked.

Steps to reproduce

1. Open Firefox.
2. Open the Browser console
3. Run the snippet to trigger the 30 days cookie clean-up manually:
   await Components.classes["@mozilla.org/purge-tracker-service;1"].getService(Components.interfaces.nsIPurgeTrackerService).purgeTrackingCookieJars()
4. Run the snippet to trigger the idle-daily notification manually:
   Services.obs.notifyObservers(null, "idle-daily");

Expected result

• In steps 3 and 4, the manual cookie clearance should be properly done and end in logs like:
  *** PurgeTrackerService: Purging trackers enabled, beginning batch.
  *** PurgeTrackerService: Batch finished, queueing next batch.
  *** PurgeTrackerService: Purging trackers enabled, beginning batch.
  *** PurgeTrackerService: All cookie purging finished, resetting list until tomorrow.

Actual result

• In steps 3 and 4, an "undefined" message is triggered first.

Comment 1

[Steven Englehardt [:englehardt]]

Thanks for the report. This is expected since both of these commands do not have a return value. This is just a consequence of how the console displays null return values.