RSpec.shared_examples 'not owner of dossier' do |controller, redirect| let(:dossier_2) { create(:dossier) } before do get controller, params: { dossier_id: dossier_2.id } end it 'redirect to home page' do expect(response).to redirect_to(redirect || '/') end it 'show a flash message error' do expect(flash[:alert]).to be_present end end