Move a user's notes to the ghost user

... when the user is destroyed.

app/services/concerns/users/migrate_to_ghost_user.rb

@@ -21,6 +21,7 @@ module Users::MigrateToGhostUser
 
       move_issues_to_ghost_user(user)
       move_merge_requests_to_ghost_user(user)
+      move_notes_to_ghost_user(user)
     end
 
     user.reload
@@ -35,4 +36,8 @@ module Users::MigrateToGhostUser
   def move_merge_requests_to_ghost_user(user)
     user.merge_requests.update_all(author_id: ghost_user.id)
   end
+
+  def move_notes_to_ghost_user(user)
+    user.notes.update_all(author_id: ghost_user.id)
+  end
 end

spec/services/users/destroy_service_spec.rb

@@ -144,18 +144,24 @@ describe Users::DestroyService, services: true do
 
     context 'migrating associated records to the ghost user' do
       context 'issues'  do
-        include_examples "migrating a deleted user's associated records to the ghost user", Issue do
+        include_examples "migrating a deleted user's associated records to the ghost user", Issue, {} do
           let(:created_record) { create(:issue, project: project, author: user) }
           let(:assigned_record) { create(:issue, project: project, assignee: user) }
         end
       end
 
       context 'merge requests' do
-        include_examples "migrating a deleted user's associated records to the ghost user", MergeRequest do
+        include_examples "migrating a deleted user's associated records to the ghost user", MergeRequest, {} do
           let(:created_record) { create(:merge_request, source_project: project, author: user, target_branch: "first") }
           let(:assigned_record) { create(:merge_request, source_project: project, assignee: user, target_branch: 'second') }
         end
       end
+
+      context 'notes' do
+        include_examples "migrating a deleted user's associated records to the ghost user", Note, { skip_assignee_specs: true } do
+          let(:created_record) { create(:note, project: project, author: user) }
+        end
+      end
     end
   end
 end

spec/support/services/user_destroy_service_migrate_to_ghost_user_shared_examples.rb

 require "spec_helper"
 
-shared_examples "migrating a deleted user's associated records to the ghost user" do |record_class|
+shared_examples "migrating a deleted user's associated records to the ghost user" do |record_class, options|
   record_class_name = record_class.to_s.titleize.downcase
 
   let(:project) { create(:project) }
@@ -33,6 +33,7 @@ shared_examples "migrating a deleted user's associated records to the ghost user
     end
   end
 
+  unless options[:skip_assignee_specs]
     context "for a #{record_class_name} the user was assigned to" do
       let!(:record) { assigned_record }
 
@@ -50,4 +51,5 @@ shared_examples "migrating a deleted user's associated records to the ghost user
         expect(migrated_record.assignee).to be_nil
       end
     end
+  end
 end