This task is about ensuring Manual Topic Subscriptions (T263820)
=== Testing timing
=== Testing instructions
**Meta**
- Project: https://en.wikipedia.beta.wmflabs.org/
**Enabling topic subscriptions**
**Disabling topic subscriptions**
**Verify feature appears as expected**
//Exhaustively test `Special:Preferences` to ensure topic subscriptions appears/does not appear in expected ways. Where "exhaustively" means doing things like://
- If the `DiscussionTools` beta feature is enabled in `Special:Preferences#mw-prefsection-betafeatures` the `Enable topic subscription` appears enabled within `Special:Preferences#mw-prefsection-editing`
- If the `Enable topic subscription` is enabled within `Special:Preferences#mw-prefsection-editing`, all `==H2==` headings on talk pages should have a `Subscribe` link/affordance within them
- If the `Enable topic subscription` is disabled within `Special:Preferences#mw-prefsection-editing`, NO `==H2==` headings on talk pages should have a `Subscribe` link/affordance within them
**Verify new comment notifications are delivered through the proper channels**
//This grouping refers to verifying new comment notifications are delivered through the channels "enabled" for `Talk page subscription` in `Special:Preferences#mw-prefsection-echo`.//
**Verify new comment notifications are received for comments, regardless of the interface used to publish them**
**Verify new comment notifications are no longer sent when someone unsubscribes from a section**
- Verify `Unsubscribing` from the talk page works as expected
- Verify `Unsubscribing` from within Echo on mobile and desktop works as expected (T279150)
**Verify new comment notifications are bundled as expected**
//See: T275949#6980357.//
**Verify new comment notifications are only sent for qualifying edits**
//"Qualifying edit" needs to be defined.//
**Verify content within the new comment notifications in Echo is displaying as expected**
//E.g. Username of comment's author, a portion of what's written in the new comment person is being notified about, section title, etc.//
**Verify the calls to actions within the new comment notifications in Echo function as expected**
//E.g. links to author's user page, link to diff, link to precise location on talk page where comment was posted, etc.//
=== Requirements
- [ ] Execute the steps listed in the `Testing instructions` section above
- [ ] File tickets for any issues that surface while executing the steps listed in the `Testing instructions` section above