Be cool to split this on to two lines for slightly better readability.

You can also use `%Q()` to avoid needing to escape quotes in strings.

```ruby
expected = %Q(You are now <a href="#{show_user_wall_path(:url_name => @track_thing.tracking_user.url_name)}">following</a> updates about '#{user_link(@track_thing.tracked_user)}', a person)
subscribe_follow_notice(@track_thing).should == expected
```