Fix weights on hard-coded XCM fragments (#4144)

* Fix weights on hard-coded XCM fragments * Formatting
2026-05-30 15:11:02 +00:00 · 2021-10-26 12:36:23 +02:00
parent af18e90d70
commit 4c042b1de3
2 changed files with 400 additions and 85 deletions
@@ -473,7 +473,9 @@ pub mod pallet {

 		/// Teleport some assets from the local chain to some destination chain.
 		///
-		/// Fee payment on the destination side is made from the first asset listed in the `assets` vector.
+		/// Fee payment on the destination side is made from the first asset listed in the `assets` vector and
+		/// fee-weight is calculated locally and thus remote weights are assumed to be equal to
+		/// local weights.
 		///
 		/// - `origin`: Must be capable of withdrawing the `assets` and executing XCM.
 		/// - `dest`: Destination context for the assets. Will typically be `X2(Parent, Parachain(..))` to send
@@ -506,54 +508,15 @@ pub mod pallet {
 			assets: Box<VersionedMultiAssets>,
 			fee_asset_item: u32,
 		) -> DispatchResult {
-			let origin_location = T::ExecuteXcmOrigin::ensure_origin(origin)?;
-			let dest = MultiLocation::try_from(*dest).map_err(|()| Error::<T>::BadVersion)?;
-			let beneficiary =
-				MultiLocation::try_from(*beneficiary).map_err(|()| Error::<T>::BadVersion)?;
-			let assets = MultiAssets::try_from(*assets).map_err(|()| Error::<T>::BadVersion)?;
-
-			ensure!(assets.len() <= MAX_ASSETS_FOR_TRANSFER, Error::<T>::TooManyAssets);
-			let value = (origin_location, assets.drain());
-			ensure!(T::XcmTeleportFilter::contains(&value), Error::<T>::Filtered);
-			let (origin_location, assets) = value;
-			let inv_dest = T::LocationInverter::invert_location(&dest)
-				.map_err(|()| Error::<T>::DestinationNotInvertible)?;
-			let fees = assets
-				.get(fee_asset_item as usize)
-				.ok_or(Error::<T>::Empty)?
-				.clone()
-				.reanchored(&inv_dest)
-				.map_err(|_| Error::<T>::CannotReanchor)?;
-			let max_assets = assets.len() as u32;
-			let assets = assets.into();
-			let mut remote_message = Xcm(vec![
-				BuyExecution { fees, weight_limit: Limited(0) },
-				DepositAsset { assets: Wild(All), max_assets, beneficiary },
-			]);
-			// use local weight for remote message and hope for the best.
-			let remote_weight = T::Weigher::weight(&mut remote_message)
-				.map_err(|()| Error::<T>::UnweighableMessage)?;
-			if let Some(BuyExecution { weight_limit: Limited(ref mut limit), .. }) =
-				remote_message.0.get_mut(0)
-			{
-				*limit = remote_weight;
-			}
-			let mut message = Xcm(vec![
-				WithdrawAsset(assets),
-				InitiateTeleport { assets: Wild(All), dest, xcm: remote_message.into() },
-			]);
-			let weight =
-				T::Weigher::weight(&mut message).map_err(|()| Error::<T>::UnweighableMessage)?;
-			let outcome =
-				T::XcmExecutor::execute_xcm_in_credit(origin_location, message, weight, weight);
-			Self::deposit_event(Event::Attempted(outcome));
-			Ok(())
+			Self::do_teleport_assets(origin, dest, beneficiary, assets, fee_asset_item, None)
 		}

 		/// Transfer some assets from the local chain to the sovereign account of a destination chain and forward
 		/// a notification XCM.
 		///
-		/// Fee payment on the destination side is made from the first asset listed in the `assets` vector.
+		/// Fee payment on the destination side is made from the first asset listed in the `assets` vector and
+		/// fee-weight is calculated locally and thus remote weights are assumed to be equal to
+		/// local weights.
 		///
 		/// - `origin`: Must be capable of withdrawing the `assets` and executing XCM.
 		/// - `dest`: Destination context for the assets. Will typically be `X2(Parent, Parachain(..))` to send
@@ -583,45 +546,14 @@ pub mod pallet {
 			assets: Box<VersionedMultiAssets>,
 			fee_asset_item: u32,
 		) -> DispatchResult {
-			let origin_location = T::ExecuteXcmOrigin::ensure_origin(origin)?;
-			let dest = (*dest).try_into().map_err(|()| Error::<T>::BadVersion)?;
-			let beneficiary = (*beneficiary).try_into().map_err(|()| Error::<T>::BadVersion)?;
-			let assets: MultiAssets = (*assets).try_into().map_err(|()| Error::<T>::BadVersion)?;
-
-			ensure!(assets.len() <= MAX_ASSETS_FOR_TRANSFER, Error::<T>::TooManyAssets);
-			let value = (origin_location, assets.drain());
-			ensure!(T::XcmReserveTransferFilter::contains(&value), Error::<T>::Filtered);
-			let (origin_location, assets) = value;
-			let inv_dest = T::LocationInverter::invert_location(&dest)
-				.map_err(|()| Error::<T>::DestinationNotInvertible)?;
-			let fees = assets
-				.get(fee_asset_item as usize)
-				.ok_or(Error::<T>::Empty)?
-				.clone()
-				.reanchored(&inv_dest)
-				.map_err(|_| Error::<T>::CannotReanchor)?;
-			let max_assets = assets.len() as u32;
-			let assets = assets.into();
-			let mut remote_message = Xcm(vec![
-				BuyExecution { fees, weight_limit: Limited(0) },
-				DepositAsset { assets: Wild(All), max_assets, beneficiary },
-			]);
-			// use local weight for remote message and hope for the best.
-			let remote_weight = T::Weigher::weight(&mut remote_message)
-				.map_err(|()| Error::<T>::UnweighableMessage)?;
-			if let Some(BuyExecution { weight_limit: Limited(ref mut limit), .. }) =
-				remote_message.0.get_mut(0)
-			{
-				*limit = remote_weight;
-			}
-			let mut message =
-				Xcm(vec![TransferReserveAsset { assets, dest, xcm: remote_message.into() }]);
-			let weight =
-				T::Weigher::weight(&mut message).map_err(|()| Error::<T>::UnweighableMessage)?;
-			let outcome =
-				T::XcmExecutor::execute_xcm_in_credit(origin_location, message, weight, weight);
-			Self::deposit_event(Event::Attempted(outcome));
-			Ok(())
+			Self::do_reserve_transfer_assets(
+				origin,
+				dest,
+				beneficiary,
+				assets,
+				fee_asset_item,
+				None,
+			)
 		}

 		/// Execute an XCM message from a local, signed, origin.
@@ -732,9 +664,218 @@ pub mod pallet {
 				.into()
 			})
 		}
+
+		/// Transfer some assets from the local chain to the sovereign account of a destination chain and forward
+		/// a notification XCM.
+		///
+		/// Fee payment on the destination side is made from the first asset listed in the `assets` vector.
+		///
+		/// - `origin`: Must be capable of withdrawing the `assets` and executing XCM.
+		/// - `dest`: Destination context for the assets. Will typically be `X2(Parent, Parachain(..))` to send
+		///   from parachain to parachain, or `X1(Parachain(..))` to send from relay to parachain.
+		/// - `beneficiary`: A beneficiary location for the assets in the context of `dest`. Will generally be
+		///   an `AccountId32` value.
+		/// - `assets`: The assets to be withdrawn. This should include the assets used to pay the fee on the
+		///   `dest` side.
+		/// - `fee_asset_item`: The index into `assets` of the item which should be used to pay
+		///   fees.
+		/// - `weight_limit`: The remote-side weight limit, if any, for the XCM fee purchase.
+		#[pallet::weight({
+			match ((*assets.clone()).try_into(), (*dest.clone()).try_into()) {
+				(Ok(assets), Ok(dest)) => {
+					use sp_std::vec;
+					let mut message = Xcm(vec![
+						TransferReserveAsset { assets, dest, xcm: Xcm(vec![]) }
+					]);
+					T::Weigher::weight(&mut message).map_or(Weight::max_value(), |w| 100_000_000 + w)
+				},
+				_ => Weight::max_value(),
+			}
+		})]
+		pub fn limited_reserve_transfer_assets(
+			origin: OriginFor<T>,
+			dest: Box<VersionedMultiLocation>,
+			beneficiary: Box<VersionedMultiLocation>,
+			assets: Box<VersionedMultiAssets>,
+			fee_asset_item: u32,
+			weight_limit: WeightLimit,
+		) -> DispatchResult {
+			Self::do_reserve_transfer_assets(
+				origin,
+				dest,
+				beneficiary,
+				assets,
+				fee_asset_item,
+				Some(weight_limit),
+			)
+		}
+
+		/// Teleport some assets from the local chain to some destination chain.
+		///
+		/// Fee payment on the destination side is made from the first asset listed in the `assets` vector.
+		///
+		/// - `origin`: Must be capable of withdrawing the `assets` and executing XCM.
+		/// - `dest`: Destination context for the assets. Will typically be `X2(Parent, Parachain(..))` to send
+		///   from parachain to parachain, or `X1(Parachain(..))` to send from relay to parachain.
+		/// - `beneficiary`: A beneficiary location for the assets in the context of `dest`. Will generally be
+		///   an `AccountId32` value.
+		/// - `assets`: The assets to be withdrawn. The first item should be the currency used to to pay the fee on the
+		///   `dest` side. May not be empty.
+		/// - `dest_weight`: Equal to the total weight on `dest` of the XCM message
+		///   `Teleport { assets, effects: [ BuyExecution{..}, DepositAsset{..} ] }`.
+		/// - `weight_limit`: The remote-side weight limit, if any, for the XCM fee purchase.
+		#[pallet::weight({
+			let maybe_assets: Result<MultiAssets, ()> = (*assets.clone()).try_into();
+			let maybe_dest: Result<MultiLocation, ()> = (*dest.clone()).try_into();
+			match (maybe_assets, maybe_dest) {
+				(Ok(assets), Ok(dest)) => {
+					use sp_std::vec;
+					let mut message = Xcm(vec![
+						WithdrawAsset(assets),
+						InitiateTeleport { assets: Wild(All), dest, xcm: Xcm(vec![]) },
+					]);
+					T::Weigher::weight(&mut message).map_or(Weight::max_value(), |w| 100_000_000 + w)
+				},
+				_ => Weight::max_value(),
+			}
+		})]
+		pub fn limited_teleport_assets(
+			origin: OriginFor<T>,
+			dest: Box<VersionedMultiLocation>,
+			beneficiary: Box<VersionedMultiLocation>,
+			assets: Box<VersionedMultiAssets>,
+			fee_asset_item: u32,
+			weight_limit: WeightLimit,
+		) -> DispatchResult {
+			Self::do_teleport_assets(
+				origin,
+				dest,
+				beneficiary,
+				assets,
+				fee_asset_item,
+				Some(weight_limit),
+			)
+		}
 	}

 	impl<T: Config> Pallet<T> {
+		fn do_reserve_transfer_assets(
+			origin: OriginFor<T>,
+			dest: Box<VersionedMultiLocation>,
+			beneficiary: Box<VersionedMultiLocation>,
+			assets: Box<VersionedMultiAssets>,
+			fee_asset_item: u32,
+			maybe_weight_limit: Option<WeightLimit>,
+		) -> DispatchResult {
+			let origin_location = T::ExecuteXcmOrigin::ensure_origin(origin)?;
+			let dest = (*dest).try_into().map_err(|()| Error::<T>::BadVersion)?;
+			let beneficiary: MultiLocation =
+				(*beneficiary).try_into().map_err(|()| Error::<T>::BadVersion)?;
+			let assets: MultiAssets = (*assets).try_into().map_err(|()| Error::<T>::BadVersion)?;
+
+			ensure!(assets.len() <= MAX_ASSETS_FOR_TRANSFER, Error::<T>::TooManyAssets);
+			let value = (origin_location, assets.drain());
+			ensure!(T::XcmReserveTransferFilter::contains(&value), Error::<T>::Filtered);
+			let (origin_location, assets) = value;
+			let inv_dest = T::LocationInverter::invert_location(&dest)
+				.map_err(|()| Error::<T>::DestinationNotInvertible)?;
+			let fees = assets
+				.get(fee_asset_item as usize)
+				.ok_or(Error::<T>::Empty)?
+				.clone()
+				.reanchored(&inv_dest)
+				.map_err(|_| Error::<T>::CannotReanchor)?;
+			let max_assets = assets.len() as u32;
+			let assets: MultiAssets = assets.into();
+			let weight_limit = match maybe_weight_limit {
+				Some(weight_limit) => weight_limit,
+				None => {
+					let beneficiary = beneficiary.clone();
+					let fees = fees.clone();
+					let mut remote_message = Xcm(vec![
+						ReserveAssetDeposited(assets.clone()),
+						ClearOrigin,
+						BuyExecution { fees, weight_limit: Limited(0) },
+						DepositAsset { assets: Wild(All), max_assets, beneficiary },
+					]);
+					// use local weight for remote message and hope for the best.
+					let remote_weight = T::Weigher::weight(&mut remote_message)
+						.map_err(|()| Error::<T>::UnweighableMessage)?;
+					Limited(remote_weight)
+				},
+			};
+			let xcm = Xcm(vec![
+				BuyExecution { fees, weight_limit },
+				DepositAsset { assets: Wild(All), max_assets, beneficiary },
+			]);
+			let mut message = Xcm(vec![TransferReserveAsset { assets, dest, xcm }]);
+			let weight =
+				T::Weigher::weight(&mut message).map_err(|()| Error::<T>::UnweighableMessage)?;
+			let outcome =
+				T::XcmExecutor::execute_xcm_in_credit(origin_location, message, weight, weight);
+			Self::deposit_event(Event::Attempted(outcome));
+			Ok(())
+		}
+
+		fn do_teleport_assets(
+			origin: OriginFor<T>,
+			dest: Box<VersionedMultiLocation>,
+			beneficiary: Box<VersionedMultiLocation>,
+			assets: Box<VersionedMultiAssets>,
+			fee_asset_item: u32,
+			maybe_weight_limit: Option<WeightLimit>,
+		) -> DispatchResult {
+			let origin_location = T::ExecuteXcmOrigin::ensure_origin(origin)?;
+			let dest = (*dest).try_into().map_err(|()| Error::<T>::BadVersion)?;
+			let beneficiary: MultiLocation =
+				(*beneficiary).try_into().map_err(|()| Error::<T>::BadVersion)?;
+			let assets: MultiAssets = (*assets).try_into().map_err(|()| Error::<T>::BadVersion)?;
+
+			ensure!(assets.len() <= MAX_ASSETS_FOR_TRANSFER, Error::<T>::TooManyAssets);
+			let value = (origin_location, assets.drain());
+			ensure!(T::XcmTeleportFilter::contains(&value), Error::<T>::Filtered);
+			let (origin_location, assets) = value;
+			let inv_dest = T::LocationInverter::invert_location(&dest)
+				.map_err(|()| Error::<T>::DestinationNotInvertible)?;
+			let fees = assets
+				.get(fee_asset_item as usize)
+				.ok_or(Error::<T>::Empty)?
+				.clone()
+				.reanchored(&inv_dest)
+				.map_err(|_| Error::<T>::CannotReanchor)?;
+			let max_assets = assets.len() as u32;
+			let assets: MultiAssets = assets.into();
+			let weight_limit = match maybe_weight_limit {
+				Some(weight_limit) => weight_limit,
+				None => {
+					let beneficiary = beneficiary.clone();
+					let fees = fees.clone();
+					let mut remote_message = Xcm(vec![
+						ReceiveTeleportedAsset(assets.clone()),
+						ClearOrigin,
+						BuyExecution { fees, weight_limit: Limited(0) },
+						DepositAsset { assets: Wild(All), max_assets, beneficiary },
+					]);
+					// use local weight for remote message and hope for the best.
+					let remote_weight = T::Weigher::weight(&mut remote_message)
+						.map_err(|()| Error::<T>::UnweighableMessage)?;
+					Limited(remote_weight)
+				},
+			};
+			let xcm = Xcm(vec![
+				BuyExecution { fees, weight_limit },
+				DepositAsset { assets: Wild(All), max_assets, beneficiary },
+			]);
+			let mut message =
+				Xcm(vec![WithdrawAsset(assets), InitiateTeleport { assets: Wild(All), dest, xcm }]);
+			let weight =
+				T::Weigher::weight(&mut message).map_err(|()| Error::<T>::UnweighableMessage)?;
+			let outcome =
+				T::XcmExecutor::execute_xcm_in_credit(origin_location, message, weight, weight);
+			Self::deposit_event(Event::Attempted(outcome));
+			Ok(())
+		}
+
 		/// Will always make progress, and will do its best not to use much more than `weight_cutoff`
 		/// in doing so.
 		pub(crate) fn check_xcm_version_change(
@@ -234,7 +234,7 @@ fn teleport_assets_works() {
 				Xcm(vec![
 					ReceiveTeleportedAsset((Here, SEND_AMOUNT).into()),
 					ClearOrigin,
-					buy_limited_execution((Here, SEND_AMOUNT), 2000),
+					buy_limited_execution((Here, SEND_AMOUNT), 4000),
 					DepositAsset { assets: All.into(), max_assets: 1, beneficiary: dest },
 				]),
 			)]
@@ -248,6 +248,88 @@ fn teleport_assets_works() {
 	});
 }

+/// Test `limited_teleport_assets`
+///
+/// Asserts that the sender's balance is decreased as a result of execution of
+/// local effects.
+#[test]
+fn limmited_teleport_assets_works() {
+	let balances =
+		vec![(ALICE, INITIAL_BALANCE), (ParaId::from(PARA_ID).into_account(), INITIAL_BALANCE)];
+	new_test_ext_with_balances(balances).execute_with(|| {
+		let weight = 2 * BaseXcmWeight::get();
+		assert_eq!(Balances::total_balance(&ALICE), INITIAL_BALANCE);
+		let dest: MultiLocation = AccountId32 { network: Any, id: BOB.into() }.into();
+		assert_ok!(XcmPallet::limited_teleport_assets(
+			Origin::signed(ALICE),
+			Box::new(RelayLocation::get().into()),
+			Box::new(dest.clone().into()),
+			Box::new((Here, SEND_AMOUNT).into()),
+			0,
+			WeightLimit::Limited(5000),
+		));
+		assert_eq!(Balances::total_balance(&ALICE), INITIAL_BALANCE - SEND_AMOUNT);
+		assert_eq!(
+			sent_xcm(),
+			vec![(
+				RelayLocation::get().into(),
+				Xcm(vec![
+					ReceiveTeleportedAsset((Here, SEND_AMOUNT).into()),
+					ClearOrigin,
+					buy_limited_execution((Here, SEND_AMOUNT), 5000),
+					DepositAsset { assets: All.into(), max_assets: 1, beneficiary: dest },
+				]),
+			)]
+		);
+		let versioned_sent = VersionedXcm::from(sent_xcm().into_iter().next().unwrap().1);
+		let _check_v0_ok: xcm::v0::Xcm<()> = versioned_sent.try_into().unwrap();
+		assert_eq!(
+			last_event(),
+			Event::XcmPallet(crate::Event::Attempted(Outcome::Complete(weight)))
+		);
+	});
+}
+
+/// Test `limited_teleport_assets` with unlimited weight
+///
+/// Asserts that the sender's balance is decreased as a result of execution of
+/// local effects.
+#[test]
+fn unlimmited_teleport_assets_works() {
+	let balances =
+		vec![(ALICE, INITIAL_BALANCE), (ParaId::from(PARA_ID).into_account(), INITIAL_BALANCE)];
+	new_test_ext_with_balances(balances).execute_with(|| {
+		let weight = 2 * BaseXcmWeight::get();
+		assert_eq!(Balances::total_balance(&ALICE), INITIAL_BALANCE);
+		let dest: MultiLocation = AccountId32 { network: Any, id: BOB.into() }.into();
+		assert_ok!(XcmPallet::limited_teleport_assets(
+			Origin::signed(ALICE),
+			Box::new(RelayLocation::get().into()),
+			Box::new(dest.clone().into()),
+			Box::new((Here, SEND_AMOUNT).into()),
+			0,
+			WeightLimit::Unlimited,
+		));
+		assert_eq!(Balances::total_balance(&ALICE), INITIAL_BALANCE - SEND_AMOUNT);
+		assert_eq!(
+			sent_xcm(),
+			vec![(
+				RelayLocation::get().into(),
+				Xcm(vec![
+					ReceiveTeleportedAsset((Here, SEND_AMOUNT).into()),
+					ClearOrigin,
+					buy_execution((Here, SEND_AMOUNT)),
+					DepositAsset { assets: All.into(), max_assets: 1, beneficiary: dest },
+				]),
+			)]
+		);
+		assert_eq!(
+			last_event(),
+			Event::XcmPallet(crate::Event::Attempted(Outcome::Complete(weight)))
+		);
+	});
+}
+
 /// Test `reserve_transfer_assets`
 ///
 /// Asserts that the sender's balance is decreased and the beneficiary's balance
@@ -280,7 +362,7 @@ fn reserve_transfer_assets_works() {
 				Xcm(vec![
 					ReserveAssetDeposited((Parent, SEND_AMOUNT).into()),
 					ClearOrigin,
-					buy_limited_execution((Parent, SEND_AMOUNT), 2000),
+					buy_limited_execution((Parent, SEND_AMOUNT), 4000),
 					DepositAsset { assets: All.into(), max_assets: 1, beneficiary: dest },
 				]),
 			)]
@@ -294,6 +376,98 @@ fn reserve_transfer_assets_works() {
 	});
 }

+/// Test `limited_reserve_transfer_assets`
+///
+/// Asserts that the sender's balance is decreased and the beneficiary's balance
+/// is increased. Verifies the correct message is sent and event is emitted.
+#[test]
+fn limited_reserve_transfer_assets_works() {
+	let balances =
+		vec![(ALICE, INITIAL_BALANCE), (ParaId::from(PARA_ID).into_account(), INITIAL_BALANCE)];
+	new_test_ext_with_balances(balances).execute_with(|| {
+		let weight = BaseXcmWeight::get();
+		let dest: MultiLocation =
+			Junction::AccountId32 { network: NetworkId::Any, id: ALICE.into() }.into();
+		assert_eq!(Balances::total_balance(&ALICE), INITIAL_BALANCE);
+		assert_ok!(XcmPallet::limited_reserve_transfer_assets(
+			Origin::signed(ALICE),
+			Box::new(Parachain(PARA_ID).into().into()),
+			Box::new(dest.clone().into()),
+			Box::new((Here, SEND_AMOUNT).into()),
+			0,
+			WeightLimit::Limited(5000),
+		));
+		// Alice spent amount
+		assert_eq!(Balances::free_balance(ALICE), INITIAL_BALANCE - SEND_AMOUNT);
+		// Destination account (parachain account) has amount
+		let para_acc: AccountId = ParaId::from(PARA_ID).into_account();
+		assert_eq!(Balances::free_balance(para_acc), INITIAL_BALANCE + SEND_AMOUNT);
+		assert_eq!(
+			sent_xcm(),
+			vec![(
+				Parachain(PARA_ID).into(),
+				Xcm(vec![
+					ReserveAssetDeposited((Parent, SEND_AMOUNT).into()),
+					ClearOrigin,
+					buy_limited_execution((Parent, SEND_AMOUNT), 5000),
+					DepositAsset { assets: All.into(), max_assets: 1, beneficiary: dest },
+				]),
+			)]
+		);
+		let versioned_sent = VersionedXcm::from(sent_xcm().into_iter().next().unwrap().1);
+		let _check_v0_ok: xcm::v0::Xcm<()> = versioned_sent.try_into().unwrap();
+		assert_eq!(
+			last_event(),
+			Event::XcmPallet(crate::Event::Attempted(Outcome::Complete(weight)))
+		);
+	});
+}
+
+/// Test `limited_reserve_transfer_assets` with unlimited weight purchasing
+///
+/// Asserts that the sender's balance is decreased and the beneficiary's balance
+/// is increased. Verifies the correct message is sent and event is emitted.
+#[test]
+fn unlimited_reserve_transfer_assets_works() {
+	let balances =
+		vec![(ALICE, INITIAL_BALANCE), (ParaId::from(PARA_ID).into_account(), INITIAL_BALANCE)];
+	new_test_ext_with_balances(balances).execute_with(|| {
+		let weight = BaseXcmWeight::get();
+		let dest: MultiLocation =
+			Junction::AccountId32 { network: NetworkId::Any, id: ALICE.into() }.into();
+		assert_eq!(Balances::total_balance(&ALICE), INITIAL_BALANCE);
+		assert_ok!(XcmPallet::limited_reserve_transfer_assets(
+			Origin::signed(ALICE),
+			Box::new(Parachain(PARA_ID).into().into()),
+			Box::new(dest.clone().into()),
+			Box::new((Here, SEND_AMOUNT).into()),
+			0,
+			WeightLimit::Unlimited,
+		));
+		// Alice spent amount
+		assert_eq!(Balances::free_balance(ALICE), INITIAL_BALANCE - SEND_AMOUNT);
+		// Destination account (parachain account) has amount
+		let para_acc: AccountId = ParaId::from(PARA_ID).into_account();
+		assert_eq!(Balances::free_balance(para_acc), INITIAL_BALANCE + SEND_AMOUNT);
+		assert_eq!(
+			sent_xcm(),
+			vec![(
+				Parachain(PARA_ID).into(),
+				Xcm(vec![
+					ReserveAssetDeposited((Parent, SEND_AMOUNT).into()),
+					ClearOrigin,
+					buy_execution((Parent, SEND_AMOUNT)),
+					DepositAsset { assets: All.into(), max_assets: 1, beneficiary: dest },
+				]),
+			)]
+		);
+		assert_eq!(
+			last_event(),
+			Event::XcmPallet(crate::Event::Attempted(Outcome::Complete(weight)))
+		);
+	});
+}
+
 /// Test local execution of XCM
 ///
 /// Asserts that the sender's balance is decreased and the beneficiary's balance