Merge branch 'security-35235-todos-cleanup' into 'master'

Remove todos for users from removed linked group

See merge request gitlab-org/security/gitlab!59

app/services/projects/group_links/destroy_service.rb

@@ -6,6 +6,12 @@ module Projects
       def execute(group_link)
         return false unless group_link
 
+        if group_link.project.private?
+          TodosDestroyer::ProjectPrivateWorker.perform_in(Todo::WAIT_FOR_DELETE, project.id)
+        else
+          TodosDestroyer::ConfidentialIssueWorker.perform_in(Todo::WAIT_FOR_DELETE, nil, project.id)
+        end
+
         group_link.destroy
       end
     end

changelogs/unreleased/security-35235-todos-cleanup.yml

+---
+title: Cleanup todos for users from a removed linked group
+merge_request:
+author:
+type: security

spec/services/projects/group_links/destroy_service_spec.rb

@@ -3,8 +3,8 @@
 require 'spec_helper'
 
 describe Projects::GroupLinks::DestroyService, '#execute' do
-  let(:group_link) { create :project_group_link }
-  let(:project) { group_link.project }
+  let(:project) { create(:project, :private) }
+  let!(:group_link) { create(:project_group_link, project: project) }
   let(:user) { create :user }
   let(:subject) { described_class.new(project, user) }
 
@@ -15,4 +15,39 @@ describe Projects::GroupLinks::DestroyService, '#execute' do
   it 'returns false if group_link is blank' do
     expect { subject.execute(nil) }.not_to change { project.project_group_links.count }
   end
+
+  describe 'todos cleanup' do
+    context 'when project is private' do
+      it 'triggers todos cleanup' do
+        expect(TodosDestroyer::ProjectPrivateWorker).to receive(:perform_in).with(Todo::WAIT_FOR_DELETE, project.id)
+        expect(project.private?).to be true
+
+        subject.execute(group_link)
+      end
+    end
+
+    context 'when project is public or internal' do
+      shared_examples_for 'removes confidential todos' do
+        it 'does not trigger todos cleanup' do
+          expect(TodosDestroyer::ProjectPrivateWorker).not_to receive(:perform_in).with(Todo::WAIT_FOR_DELETE, project.id)
+          expect(TodosDestroyer::ConfidentialIssueWorker).to receive(:perform_in).with(Todo::WAIT_FOR_DELETE, nil, project.id)
+          expect(project.private?).to be false
+
+          subject.execute(group_link)
+        end
+      end
+
+      context 'when project is public' do
+        let(:project) { create(:project, :public) }
+
+        it_behaves_like 'removes confidential todos'
+      end
+
+      context 'when project is internal' do
+        let(:project) { create(:project, :public) }
+
+        it_behaves_like 'removes confidential todos'
+      end
+    end
+  end
 end