tasks: delete dossiers without procedures

Fix #3279

lib/tasks/deployment/20190117154829_delete_dossiers_without_procedure.rake

@@ -0,0 +1,25 @@
+require Rails.root.join("lib", "tasks", "task_helper")
+
+namespace :after_party do
+  desc 'Deployment task: delete_dossiers_without_procedure'
+  task delete_dossiers_without_procedure: :environment do
+    rake_puts "Running deploy task 'delete_dossiers_without_procedure'"
+
+    dossiers_without_procedure = Dossier.left_outer_joins(:procedure).where(procedures: { id: nil })
+    total = dossiers_without_procedure.count
+    expected_dossiers_count = 60
+
+    if total > expected_dossiers_count
+      raise "Error: #{expected_dossiers_count} dossiers expected, but found #{total}. Aborting."
+    end
+
+    dossiers_without_procedure.each do |dossier|
+      rake_puts "Destroy dossier #{dossier.id}"
+      dossier.destroy!
+    end
+
+    rake_puts "#{total} dossiers without procedure were destroyed."
+
+    AfterParty::TaskRecord.create version: '20190117154829'
+  end # task :delete_dossiers_without_procedure
+end # namespace :after_party

spec/lib/tasks/deployment/20190117154829_delete_dossiers_without_procedure.rake_spec.rb

@@ -0,0 +1,42 @@
+describe '20190117154829_delete_dossiers_without_procedure.rake' do
+  let(:rake_task) { Rake::Task['after_party:delete_dossiers_without_procedure'] }
+
+  subject do
+    rake_task.invoke
+  end
+
+  after do
+    rake_task.reenable
+  end
+
+  context 'when the procedure of some dossiers has been deleted' do
+    let!(:procedure1) { create(:procedure_with_dossiers, dossiers_count: 2) }
+    let!(:procedure2) { create(:procedure_with_dossiers, :published, dossiers_count: 2) }
+    let!(:procedure3) { create(:procedure_with_dossiers, :published, dossiers_count: 2) }
+    let!(:procedure4) { create(:procedure_with_dossiers, :archived, dossiers_count: 2) }
+
+    let(:procedure_2_dossier_ids) { procedure2.dossiers.pluck(:id) }
+
+    before do
+      procedure_2_dossier_ids
+      procedure2.delete
+      expect(procedure_2_dossier_ids.count).to eq(2)
+      expect(Dossier.find_by(id: procedure_2_dossier_ids.first).procedure).to be nil
+      expect(Dossier.find_by(id: procedure_2_dossier_ids.second).procedure).to be nil
+    end
+
+    it 'destroy dossiers without an existing procedure' do
+      subject
+      expect(Dossier.unscoped.find_by(id: procedure_2_dossier_ids.first)).to be nil
+      expect(Dossier.unscoped.find_by(id: procedure_2_dossier_ids.last)).to be nil
+    end
+
+    it 'doesn’t destroy other dossiers' do
+      subject
+      expect(Dossier.all.count).to eq(6)
+      expect(procedure1.reload.dossiers.count).to eq(2)
+      expect(procedure3.reload.dossiers.count).to eq(2)
+      expect(procedure4.reload.dossiers.count).to eq(2)
+    end
+  end
+end