T294398 changed how Automatic Topic Subscription is configured such that only new accounts become automatically subscribed to the discussions they start and comment within.
This task is about verifying the above has been implemented in as we expect.
=== Test cases
- On wikis where Automatic Topic Subscriptions is available by default (read: the functionality is available regardless of the state of the `Discussion tools` Beta Feature):
-- **New people/accounts** should see the `Automatically subscribe to topics` setting within `Special:Preferences#mw-prefsection-editing` --> `Discussion pages` **ENABLED**
-- **Existing account holders** should see the `Automatically subscribe to topics` setting within `Special:Preferences#mw-prefsection-editing` --> `Discussion pages` **DISABLED**
//This chart is an attempt to communicate the requirements listed above in a more visual way...//
|Availability of Automatic Topic Subscriptions|`Automatically subscribe to topics` setting (EXISTING accounts)|`Automatically subscribe to topics` setting (NEW accounts)
|---|---|---
| Opt-out| DISABLED | ENABLED|
=== Wikis to test on
!!@ppelberg to document once finalized.!!
=== Done
- [ ] Verify the Automatic Topic Subscriptions setting is configured in the ways described in the `===Test cases` section above