assert for bench

frame/referenda/src/benchmarking.rs

@@ -266,11 +266,15 @@ benchmarks_instance_pallet! {
 
 	refund_submission_deposit {
 		let (origin, index) = create_referendum::<T, I>();
+		let caller = frame_system::ensure_signed(origin.clone()).unwrap();
+		let balance = T::Currency::free_balance(&caller);
 		assert_ok!(Referenda::<T, I>::cancel(T::CancelOrigin::successful_origin(), index));
 		assert_matches!(ReferendumInfoFor::<T, I>::get(index), Some(ReferendumInfo::Cancelled(_, Some(_), _)));
 	}: _<T::RuntimeOrigin>(origin, index)
 	verify {
 		assert_matches!(ReferendumInfoFor::<T, I>::get(index), Some(ReferendumInfo::Cancelled(_, None, _)));
+		let new_balance = T::Currency::free_balance(&caller);
+		assert!(new_balance > balance);
 	}
 
 	cancel {