fix(services): can destroy with discarded procedures

Closes #7626

app/controllers/administrateurs/services_controller.rb

@@ -64,6 +64,7 @@ module Administrateurs
         flash[:alert] = message
         redirect_to admin_services_path(procedure_id: params[:procedure_id])
       else
+        service_to_destroy.procedures.with_discarded.discarded.update(service: nil)
         service_to_destroy.destroy
         redirect_to admin_services_path(procedure_id: params[:procedure_id]),
           notice: "#{service_to_destroy.nom} est supprimé"

spec/controllers/administrateurs/services_controller_spec.rb

@@ -135,5 +135,19 @@ describe Administrateurs::ServicesController, type: :controller do
       it { expect(flash.notice).to be_nil }
       it { expect(response).to redirect_to(admin_services_path(procedure_id: 12)) }
     end
+
+    context "when a service has some related discarded procedures" do
+      let!(:procedure) { create(:procedure, :discarded, service: service) }
+
+      before do
+        sign_in(admin.user)
+        delete :destroy, params: { id: service.id, procedure_id: procedure.id }
+      end
+
+      it { expect { service.reload }.to raise_error(ActiveRecord::RecordNotFound) }
+      it { expect(flash.alert).to be_nil }
+      it { expect(flash.notice).to eq("#{service.nom} est supprimé") }
+      it { expect(procedure.reload.service_id).to be_nil }
+    end
   end
 end