Clean up of `RSpec/LetSetup` within `spec/lib` (#28447)

.rubocop_todo.yml

@@ -50,9 +50,6 @@ RSpec/LetSetup:
     - 'spec/controllers/auth/confirmations_controller_spec.rb'
     - 'spec/controllers/auth/passwords_controller_spec.rb'
     - 'spec/controllers/auth/sessions_controller_spec.rb'
-    - 'spec/lib/activitypub/activity/delete_spec.rb'
-    - 'spec/lib/vacuum/applications_vacuum_spec.rb'
-    - 'spec/lib/vacuum/preview_cards_vacuum_spec.rb'
     - 'spec/models/account_statuses_cleanup_policy_spec.rb'
     - 'spec/models/status_spec.rb'
     - 'spec/services/account_statuses_cleanup_service_spec.rb'

spec/lib/activitypub/activity/delete_spec.rb

@@ -50,6 +50,10 @@ RSpec.describe ActivityPub::Activity::Delete do
       it 'sends delete activity to followers of rebloggers' do
         expect(a_request(:post, 'http://example.com/inbox')).to have_been_made.once
       end
+
+      it 'deletes the reblog' do
+        expect { reblog.reload }.to raise_error(ActiveRecord::RecordNotFound)
+      end
     end
   end
 

spec/lib/vacuum/applications_vacuum_spec.rb

@@ -13,11 +13,11 @@ RSpec.describe Vacuum::ApplicationsVacuum do
     let!(:unused_app)      { Fabricate(:application, created_at: 1.month.ago) }
     let!(:recent_app)      { Fabricate(:application, created_at: 1.hour.ago) }
 
-    let!(:active_access_token) { Fabricate(:access_token, application: app_with_token) }
-    let!(:active_access_grant) { Fabricate(:access_grant, application: app_with_grant) }
-    let!(:user) { Fabricate(:user, created_by_application: app_with_signup) }
-
     before do
+      Fabricate(:access_token, application: app_with_token)
+      Fabricate(:access_grant, application: app_with_grant)
+      Fabricate(:user, created_by_application: app_with_signup)
+
       subject.perform
     end
 

spec/lib/vacuum/preview_cards_vacuum_spec.rb

@@ -30,5 +30,9 @@ RSpec.describe Vacuum::PreviewCardsVacuum do
     it 'does not delete attached preview cards' do
       expect(new_preview_card.reload).to be_persisted
     end
+
+    it 'does not delete orphaned preview cards in the retention period' do
+      expect(orphaned_preview_card.reload).to be_persisted
+    end
   end
 end