Fix BootstrapTimelineService crashing when bootstrapped accounts are invalid (#12037)

* Add test to handle suspended and missing users in BootstrapTimelineService

* Fix BootstrapTimelineService crashing when bootstrapped accounts are invalid

app/services/bootstrap_timeline_service.rb

@@ -17,7 +17,11 @@ class BootstrapTimelineService < BaseService
 
   def autofollow_bootstrap_timeline_accounts!
     bootstrap_timeline_accounts.each do |target_account|
-      FollowService.new.call(@source_account, target_account)
+      begin
+        FollowService.new.call(@source_account, target_account)
+      rescue ActiveRecord::RecordNotFound, Mastodon::NotPermittedError
+        nil
+      end
     end
   end
 
@@ -40,7 +44,9 @@ class BootstrapTimelineService < BaseService
 
   def local_unlocked_accounts(usernames)
     Account.local
+           .without_suspended
            .where(username: usernames)
            .where(locked: false)
+           .where(moved_to_account_id: nil)
   end
 end

spec/services/bootstrap_timeline_service_spec.rb

@@ -22,9 +22,10 @@ RSpec.describe BootstrapTimelineService, type: :service do
     context 'when setting is set' do
       let!(:alice) { Fabricate(:account, username: 'alice') }
       let!(:bob)   { Fabricate(:account, username: 'bob') }
+      let!(:eve)   { Fabricate(:account, username: 'eve', suspended: true) }
 
       before do
-        Setting.bootstrap_timeline_accounts = 'alice, bob'
+        Setting.bootstrap_timeline_accounts = 'alice, @bob, eve, unknown'
         subject.call(source_account)
       end
 
@@ -32,6 +33,10 @@ RSpec.describe BootstrapTimelineService, type: :service do
         expect(source_account.following?(alice)).to be true
         expect(source_account.following?(bob)).to be true
       end
+
+      it 'does not follow suspended account' do
+        expect(source_account.following?(eve)).to be false
+      end
     end
   end
 end