FRAME: Unity Balance Conversion for Different IDs of Native Asset (#3659)

Introduce types to define 1:1 balance conversion for different relative
asset ids/locations of native asset.

Examples:
native asset on Asset Hub presented as `VersionedLocatableAsset` type in
the context of Relay Chain is
```
{
  `location`: (0, Parachain(1000)),
  `asset_id`: (1, Here),
}
```
and it's balance should be converted 1:1 by implementations of
`ConversionToAssetBalance` trait.

---------

Co-authored-by: Branislav Kontur <bkontur@gmail.com>

cumulus/parachains/integration-tests/emulated/chains/relays/rococo/src/lib.rs

@@ -39,6 +39,8 @@ decl_test_relay_chains! {
 			Hrmp: rococo_runtime::Hrmp,
 			Identity: rococo_runtime::Identity,
 			IdentityMigrator: rococo_runtime::IdentityMigrator,
+			Treasury: rococo_runtime::Treasury,
+			AssetRate: rococo_runtime::AssetRate,
 		}
 	},
 }

cumulus/parachains/integration-tests/emulated/tests/assets/asset-hub-rococo/Cargo.toml

@@ -21,15 +21,20 @@ pallet-balances = { path = "../../../../../../../substrate/frame/balances", defa
 pallet-assets = { path = "../../../../../../../substrate/frame/assets", default-features = false }
 pallet-asset-conversion = { path = "../../../../../../../substrate/frame/asset-conversion", default-features = false }
 pallet-message-queue = { path = "../../../../../../../substrate/frame/message-queue", default-features = false }
+pallet-treasury = { path = "../../../../../../../substrate/frame/treasury", default-features = false }
+pallet-utility = { path = "../../../../../../../substrate/frame/utility", default-features = false }
 
 # Polkadot
 xcm = { package = "staging-xcm", path = "../../../../../../../polkadot/xcm", default-features = false }
 pallet-xcm = { path = "../../../../../../../polkadot/xcm/pallet-xcm", default-features = false }
 xcm-executor = { package = "staging-xcm-executor", path = "../../../../../../../polkadot/xcm/xcm-executor", default-features = false }
 rococo-runtime = { path = "../../../../../../../polkadot/runtime/rococo" }
+polkadot-runtime-common = { path = "../../../../../../../polkadot/runtime/common" }
+rococo-runtime-constants = { path = "../../../../../../../polkadot/runtime/rococo/constants" }
 
 # Cumulus
 asset-test-utils = { path = "../../../../../runtimes/assets/test-utils" }
+cumulus-pallet-parachain-system = { path = "../../../../../../pallets/parachain-system", default-features = false }
 parachains-common = { path = "../../../../../common" }
 asset-hub-rococo-runtime = { path = "../../../../../runtimes/assets/asset-hub-rococo" }
 penpal-runtime = { path = "../../../../../runtimes/testing/penpal" }

cumulus/parachains/integration-tests/emulated/tests/assets/asset-hub-rococo/src/tests/mod.rs

@@ -19,3 +19,4 @@ mod send;
 mod set_xcm_versions;
 mod swap;
 mod teleport;
+mod treasury;

cumulus/parachains/integration-tests/emulated/tests/assets/asset-hub-rococo/src/tests/treasury.rs

@@ -0,0 +1,270 @@
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use crate::imports::*;
+use emulated_integration_tests_common::accounts::{ALICE, BOB};
+use frame_support::{
+	dispatch::RawOrigin,
+	sp_runtime::traits::Dispatchable,
+	traits::{
+		fungible::Inspect,
+		fungibles::{Create, Inspect as FungiblesInspect, Mutate},
+	},
+};
+use parachains_common::AccountId;
+use polkadot_runtime_common::impls::VersionedLocatableAsset;
+use rococo_runtime::OriginCaller;
+use rococo_runtime_constants::currency::GRAND;
+use xcm_executor::traits::ConvertLocation;
+
+// Fund Treasury account on Asset Hub from Treasury account on Relay Chain with ROCs.
+#[test]
+fn spend_roc_on_asset_hub() {
+	// initial treasury balance on Asset Hub in ROCs.
+	let treasury_balance = 9_000 * GRAND;
+	// the balance spend on Asset Hub.
+	let treasury_spend_balance = 1_000 * GRAND;
+
+	let init_alice_balance = AssetHubRococo::execute_with(|| {
+		<<AssetHubRococo as AssetHubRococoPallet>::Balances as Inspect<_>>::balance(
+			&AssetHubRococo::account_id_of(ALICE),
+		)
+	});
+
+	Rococo::execute_with(|| {
+		type RuntimeEvent = <Rococo as Chain>::RuntimeEvent;
+		type RuntimeCall = <Rococo as Chain>::RuntimeCall;
+		type Runtime = <Rococo as Chain>::Runtime;
+		type Balances = <Rococo as RococoPallet>::Balances;
+		type Treasury = <Rococo as RococoPallet>::Treasury;
+
+		// Fund Treasury account on Asset Hub with ROCs.
+
+		let root = <Rococo as Chain>::RuntimeOrigin::root();
+		let treasury_account = Treasury::account_id();
+
+		// Mint assets to Treasury account on Relay Chain.
+		assert_ok!(Balances::force_set_balance(
+			root.clone(),
+			treasury_account.clone().into(),
+			treasury_balance * 2,
+		));
+
+		let native_asset = Location::here();
+		let asset_hub_location: Location = [Parachain(1000)].into();
+		let treasury_location: Location = (Parent, PalletInstance(18)).into();
+
+		let teleport_call = RuntimeCall::Utility(pallet_utility::Call::<Runtime>::dispatch_as {
+			as_origin: bx!(OriginCaller::system(RawOrigin::Signed(treasury_account))),
+			call: bx!(RuntimeCall::XcmPallet(pallet_xcm::Call::<Runtime>::teleport_assets {
+				dest: bx!(VersionedLocation::V4(asset_hub_location.clone())),
+				beneficiary: bx!(VersionedLocation::V4(treasury_location)),
+				assets: bx!(VersionedAssets::V4(
+					Asset { id: native_asset.clone().into(), fun: treasury_balance.into() }.into()
+				)),
+				fee_asset_item: 0,
+			})),
+		});
+
+		// Dispatched from Root to `despatch_as` `Signed(treasury_account)`.
+		assert_ok!(teleport_call.dispatch(root));
+
+		assert_expected_events!(
+			Rococo,
+			vec![
+				RuntimeEvent::XcmPallet(pallet_xcm::Event::Sent { .. }) => {},
+			]
+		);
+	});
+
+	Rococo::execute_with(|| {
+		type RuntimeEvent = <Rococo as Chain>::RuntimeEvent;
+		type RuntimeCall = <Rococo as Chain>::RuntimeCall;
+		type RuntimeOrigin = <Rococo as Chain>::RuntimeOrigin;
+		type Runtime = <Rococo as Chain>::Runtime;
+		type Treasury = <Rococo as RococoPallet>::Treasury;
+
+		// Fund Alice account from Rococo Treasury account on Asset Hub.
+
+		let treasury_origin: RuntimeOrigin =
+			rococo_runtime::governance::pallet_custom_origins::Origin::Treasurer.into();
+
+		let alice_location: Location =
+			[Junction::AccountId32 { network: None, id: Rococo::account_id_of(ALICE).into() }]
+				.into();
+		let asset_hub_location: Location = [Parachain(1000)].into();
+		let native_asset = Location::parent();
+
+		let treasury_spend_call = RuntimeCall::Treasury(pallet_treasury::Call::<Runtime>::spend {
+			asset_kind: bx!(VersionedLocatableAsset::V4 {
+				location: asset_hub_location.clone(),
+				asset_id: native_asset.into(),
+			}),
+			amount: treasury_spend_balance,
+			beneficiary: bx!(VersionedLocation::V4(alice_location)),
+			valid_from: None,
+		});
+
+		assert_ok!(treasury_spend_call.dispatch(treasury_origin));
+
+		// Claim the spend.
+
+		let bob_signed = RuntimeOrigin::signed(Rococo::account_id_of(BOB));
+		assert_ok!(Treasury::payout(bob_signed.clone(), 0));
+
+		assert_expected_events!(
+			Rococo,
+			vec![
+				RuntimeEvent::Treasury(pallet_treasury::Event::AssetSpendApproved { .. }) => {},
+				RuntimeEvent::Treasury(pallet_treasury::Event::Paid { .. }) => {},
+			]
+		);
+	});
+
+	AssetHubRococo::execute_with(|| {
+		type RuntimeEvent = <AssetHubRococo as Chain>::RuntimeEvent;
+		type Balances = <AssetHubRococo as AssetHubRococoPallet>::Balances;
+
+		// Ensure that the funds deposited to Alice account.
+
+		let alice_account = AssetHubRococo::account_id_of(ALICE);
+		assert_eq!(
+			<Balances as Inspect<_>>::balance(&alice_account),
+			treasury_spend_balance + init_alice_balance
+		);
+
+		// Assert events triggered by xcm pay program:
+		// 1. treasury asset transferred to spend beneficiary;
+		// 2. response to Relay Chain Treasury pallet instance sent back;
+		// 3. XCM program completed;
+		assert_expected_events!(
+			AssetHubRococo,
+			vec![
+				RuntimeEvent::Balances(pallet_balances::Event::Transfer { .. }) => {},
+				RuntimeEvent::ParachainSystem(cumulus_pallet_parachain_system::Event::UpwardMessageSent { .. }) => {},
+				RuntimeEvent::MessageQueue(pallet_message_queue::Event::Processed { success: true ,.. }) => {},
+			]
+		);
+	});
+}
+
+#[test]
+fn create_and_claim_treasury_spend_in_usdt() {
+	const ASSET_ID: u32 = 1984;
+	const SPEND_AMOUNT: u128 = 1_000_000;
+	// treasury location from a sibling parachain.
+	let treasury_location: Location = Location::new(1, PalletInstance(18));
+	// treasury account on a sibling parachain.
+	let treasury_account =
+		asset_hub_rococo_runtime::xcm_config::LocationToAccountId::convert_location(
+			&treasury_location,
+		)
+		.unwrap();
+	let asset_hub_location =
+		v3::Location::new(0, v3::Junction::Parachain(AssetHubRococo::para_id().into()));
+	let root = <Rococo as Chain>::RuntimeOrigin::root();
+	// asset kind to be spend from the treasury.
+	let asset_kind = VersionedLocatableAsset::V3 {
+		location: asset_hub_location,
+		asset_id: v3::AssetId::Concrete(
+			(v3::Junction::PalletInstance(50), v3::Junction::GeneralIndex(ASSET_ID.into())).into(),
+		),
+	};
+	// treasury spend beneficiary.
+	let alice: AccountId = Rococo::account_id_of(ALICE);
+	let bob: AccountId = Rococo::account_id_of(BOB);
+	let bob_signed = <Rococo as Chain>::RuntimeOrigin::signed(bob.clone());
+
+	AssetHubRococo::execute_with(|| {
+		type Assets = <AssetHubRococo as AssetHubRococoPallet>::Assets;
+
+		// create an asset class and mint some assets to the treasury account.
+		assert_ok!(<Assets as Create<_>>::create(
+			ASSET_ID,
+			treasury_account.clone(),
+			true,
+			SPEND_AMOUNT / 2
+		));
+		assert_ok!(<Assets as Mutate<_>>::mint_into(ASSET_ID, &treasury_account, SPEND_AMOUNT * 4));
+		// beneficiary has zero balance.
+		assert_eq!(<Assets as FungiblesInspect<_>>::balance(ASSET_ID, &alice,), 0u128,);
+	});
+
+	Rococo::execute_with(|| {
+		type RuntimeEvent = <Rococo as Chain>::RuntimeEvent;
+		type Treasury = <Rococo as RococoPallet>::Treasury;
+		type AssetRate = <Rococo as RococoPallet>::AssetRate;
+
+		// create a conversion rate from `asset_kind` to the native currency.
+		assert_ok!(AssetRate::create(root.clone(), Box::new(asset_kind.clone()), 2.into()));
+
+		// create and approve a treasury spend.
+		assert_ok!(Treasury::spend(
+			root,
+			Box::new(asset_kind),
+			SPEND_AMOUNT,
+			Box::new(Location::new(0, Into::<[u8; 32]>::into(alice.clone())).into()),
+			None,
+		));
+		// claim the spend.
+		assert_ok!(Treasury::payout(bob_signed.clone(), 0));
+
+		assert_expected_events!(
+			Rococo,
+			vec![
+				RuntimeEvent::Treasury(pallet_treasury::Event::Paid { .. }) => {},
+			]
+		);
+	});
+
+	AssetHubRococo::execute_with(|| {
+		type RuntimeEvent = <AssetHubRococo as Chain>::RuntimeEvent;
+		type Assets = <AssetHubRococo as AssetHubRococoPallet>::Assets;
+
+		// assert events triggered by xcm pay program
+		// 1. treasury asset transferred to spend beneficiary
+		// 2. response to Relay Chain treasury pallet instance sent back
+		// 3. XCM program completed
+		assert_expected_events!(
+			AssetHubRococo,
+			vec![
+				RuntimeEvent::Assets(pallet_assets::Event::Transferred { asset_id: id, from, to, amount }) => {
+					id: id == &ASSET_ID,
+					from: from == &treasury_account,
+					to: to == &alice,
+					amount: amount == &SPEND_AMOUNT,
+				},
+				RuntimeEvent::ParachainSystem(cumulus_pallet_parachain_system::Event::UpwardMessageSent { .. }) => {},
+				RuntimeEvent::MessageQueue(pallet_message_queue::Event::Processed { success: true ,.. }) => {},
+			]
+		);
+		// beneficiary received the assets from the treasury.
+		assert_eq!(<Assets as FungiblesInspect<_>>::balance(ASSET_ID, &alice,), SPEND_AMOUNT,);
+	});
+
+	Rococo::execute_with(|| {
+		type RuntimeEvent = <Rococo as Chain>::RuntimeEvent;
+		type Treasury = <Rococo as RococoPallet>::Treasury;
+
+		// check the payment status to ensure the response from the AssetHub was received.
+		assert_ok!(Treasury::check_status(bob_signed, 0));
+		assert_expected_events!(
+			Rococo,
+			vec![
+				RuntimeEvent::Treasury(pallet_treasury::Event::SpendProcessed { .. }) => {},
+			]
+		);
+	});
+}

cumulus/parachains/integration-tests/emulated/tests/collectives/collectives-westend/Cargo.toml

@@ -0,0 +1,43 @@
+[package]
+name = "collectives-westend-integration-tests"
+version = "1.0.0"
+authors.workspace = true
+edition.workspace = true
+license = "Apache-2.0"
+description = "Collectives Westend runtime integration tests with xcm-emulator"
+publish = false
+
+[lints]
+workspace = true
+
+[dependencies]
+codec = { package = "parity-scale-codec", version = "3.4.0", default-features = false }
+assert_matches = "1.5.0"
+
+# Substrate
+sp-runtime = { path = "../../../../../../../substrate/primitives/runtime", default-features = false }
+frame-support = { path = "../../../../../../../substrate/frame/support", default-features = false }
+pallet-balances = { path = "../../../../../../../substrate/frame/balances", default-features = false }
+pallet-asset-rate = { path = "../../../../../../../substrate/frame/asset-rate", default-features = false }
+pallet-assets = { path = "../../../../../../../substrate/frame/assets", default-features = false }
+pallet-treasury = { path = "../../../../../../../substrate/frame/treasury", default-features = false }
+pallet-message-queue = { path = "../../../../../../../substrate/frame/message-queue", default-features = false }
+pallet-utility = { path = "../../../../../../../substrate/frame/utility", default-features = false }
+
+# Polkadot
+polkadot-runtime-common = { path = "../../../../../../../polkadot/runtime/common" }
+xcm = { package = "staging-xcm", path = "../../../../../../../polkadot/xcm", default-features = false }
+xcm-executor = { package = "staging-xcm-executor", path = "../../../../../../../polkadot/xcm/xcm-executor", default-features = false }
+pallet-xcm = { path = "../../../../../../../polkadot/xcm/pallet-xcm", default-features = false }
+westend-runtime = { path = "../../../../../../../polkadot/runtime/westend" }
+westend-runtime-constants = { path = "../../../../../../../polkadot/runtime/westend/constants" }
+
+# Cumulus
+parachains-common = { path = "../../../../../../parachains/common" }
+testnet-parachains-constants = { path = "../../../../../runtimes/constants", features = ["westend"] }
+asset-hub-westend-runtime = { path = "../../../../../runtimes/assets/asset-hub-westend" }
+collectives-westend-runtime = { path = "../../../../../runtimes/collectives/collectives-westend" }
+cumulus-pallet-xcmp-queue = { default-features = false, path = "../../../../../../pallets/xcmp-queue" }
+cumulus-pallet-parachain-system = { default-features = false, path = "../../../../../../pallets/parachain-system" }
+emulated-integration-tests-common = { path = "../../../common", default-features = false }
+westend-system-emulated-network = { path = "../../../networks/westend-system" }

cumulus/parachains/integration-tests/emulated/tests/collectives/collectives-westend/src/lib.rs

@@ -0,0 +1,30 @@
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+pub use xcm::{prelude::*, v3};
+
+pub use emulated_integration_tests_common::xcm_emulator::{
+	assert_expected_events, bx, Chain, RelayChain as Relay, TestExt,
+};
+pub use westend_system_emulated_network::{
+	asset_hub_westend_emulated_chain::AssetHubWestendParaPallet as AssetHubWestendPallet,
+	collectives_westend_emulated_chain::CollectivesWestendParaPallet as CollectivesWestendPallet,
+	westend_emulated_chain::WestendRelayPallet as WestendPallet,
+	AssetHubWestendPara as AssetHubWestend, CollectivesWestendPara as CollectivesWestend,
+	WestendRelay as Westend,
+};
+
+#[cfg(test)]
+mod tests;

cumulus/parachains/integration-tests/emulated/tests/collectives/collectives-westend/src/tests/fellowship_treasury.rs

@@ -0,0 +1,236 @@
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use crate::*;
+use asset_hub_westend_runtime::xcm_config::LocationToAccountId as AssetHubLocationToAccountId;
+use emulated_integration_tests_common::accounts::ALICE;
+use frame_support::{
+	assert_ok, dispatch::RawOrigin, instances::Instance1, sp_runtime::traits::Dispatchable,
+	traits::fungible::Inspect,
+};
+use polkadot_runtime_common::impls::VersionedLocatableAsset;
+use westend_runtime::OriginCaller;
+use westend_runtime_constants::currency::UNITS;
+use xcm_executor::traits::ConvertLocation;
+
+// Fund Fellowship Treasury from Westend Treasury and spend from Fellowship Treasury.
+#[test]
+fn fellowship_treasury_spend() {
+	// initial treasury balance on Asset Hub in WNDs.
+	let treasury_balance = 20_000_000 * UNITS;
+	// target fellowship balance on Asset Hub in WNDs.
+	let fellowship_treasury_balance = 1_000_000 * UNITS;
+	// fellowship first spend balance in WNDs.
+	let fellowship_spend_balance = 10_000 * UNITS;
+
+	let init_alice_balance = AssetHubWestend::execute_with(|| {
+		<<AssetHubWestend as AssetHubWestendPallet>::Balances as Inspect<_>>::balance(
+			&AssetHubWestend::account_id_of(ALICE),
+		)
+	});
+
+	Westend::execute_with(|| {
+		type RuntimeEvent = <Westend as Chain>::RuntimeEvent;
+		type RuntimeCall = <Westend as Chain>::RuntimeCall;
+		type Runtime = <Westend as Chain>::Runtime;
+		type Balances = <Westend as WestendPallet>::Balances;
+		type Treasury = <Westend as WestendPallet>::Treasury;
+
+		// Fund Treasury account on Asset Hub with WNDs.
+
+		let root = <Westend as Chain>::RuntimeOrigin::root();
+		let treasury_account = Treasury::account_id();
+
+		// Mist assets to Treasury account on Relay Chain.
+		assert_ok!(Balances::force_set_balance(
+			root.clone(),
+			treasury_account.clone().into(),
+			treasury_balance * 2,
+		));
+
+		let native_asset = Location::here();
+		let asset_hub_location: Location = [Parachain(1000)].into();
+		let treasury_location: Location = (Parent, PalletInstance(37)).into();
+
+		let teleport_call = RuntimeCall::Utility(pallet_utility::Call::<Runtime>::dispatch_as {
+			as_origin: bx!(OriginCaller::system(RawOrigin::Signed(treasury_account))),
+			call: bx!(RuntimeCall::XcmPallet(pallet_xcm::Call::<Runtime>::teleport_assets {
+				dest: bx!(VersionedLocation::V4(asset_hub_location.clone())),
+				beneficiary: bx!(VersionedLocation::V4(treasury_location)),
+				assets: bx!(VersionedAssets::V4(
+					Asset { id: native_asset.clone().into(), fun: treasury_balance.into() }.into()
+				)),
+				fee_asset_item: 0,
+			})),
+		});
+
+		// Dispatched from Root to `dispatch_as` `Signed(treasury_account)`.
+		assert_ok!(teleport_call.dispatch(root));
+
+		assert_expected_events!(
+			Westend,
+			vec![
+				RuntimeEvent::XcmPallet(pallet_xcm::Event::Sent { .. }) => {},
+			]
+		);
+	});
+
+	Westend::execute_with(|| {
+		type RuntimeEvent = <Westend as Chain>::RuntimeEvent;
+		type RuntimeCall = <Westend as Chain>::RuntimeCall;
+		type RuntimeOrigin = <Westend as Chain>::RuntimeOrigin;
+		type Runtime = <Westend as Chain>::Runtime;
+		type Treasury = <Westend as WestendPallet>::Treasury;
+
+		// Fund Fellowship Treasury from Westend Treasury.
+
+		let treasury_origin: RuntimeOrigin =
+			westend_runtime::governance::pallet_custom_origins::Origin::Treasurer.into();
+		let fellowship_treasury_location: Location =
+			Location::new(1, [Parachain(1001), PalletInstance(65)]);
+		let asset_hub_location: Location = [Parachain(1000)].into();
+		let native_asset = Location::parent();
+
+		let treasury_spend_call = RuntimeCall::Treasury(pallet_treasury::Call::<Runtime>::spend {
+			asset_kind: bx!(VersionedLocatableAsset::V4 {
+				location: asset_hub_location.clone(),
+				asset_id: native_asset.into(),
+			}),
+			amount: fellowship_treasury_balance,
+			beneficiary: bx!(VersionedLocation::V4(fellowship_treasury_location)),
+			valid_from: None,
+		});
+
+		assert_ok!(treasury_spend_call.dispatch(treasury_origin));
+
+		// Claim the spend.
+
+		let alice_signed = RuntimeOrigin::signed(Westend::account_id_of(ALICE));
+		assert_ok!(Treasury::payout(alice_signed.clone(), 0));
+
+		assert_expected_events!(
+			Westend,
+			vec![
+				RuntimeEvent::Treasury(pallet_treasury::Event::AssetSpendApproved { .. }) => {},
+				RuntimeEvent::Treasury(pallet_treasury::Event::Paid { .. }) => {},
+			]
+		);
+	});
+
+	AssetHubWestend::execute_with(|| {
+		type RuntimeEvent = <AssetHubWestend as Chain>::RuntimeEvent;
+		type Balances = <AssetHubWestend as AssetHubWestendPallet>::Balances;
+
+		// Ensure that the funds deposited to the Fellowship Treasury account.
+
+		let fellowship_treasury_location: Location =
+			Location::new(1, [Parachain(1001), PalletInstance(65)]);
+		let fellowship_treasury_account =
+			AssetHubLocationToAccountId::convert_location(&fellowship_treasury_location).unwrap();
+
+		assert_eq!(
+			<Balances as Inspect<_>>::balance(&fellowship_treasury_account),
+			fellowship_treasury_balance
+		);
+
+		// Assert events triggered by xcm pay program:
+		// 1. treasury asset transferred to spend beneficiary;
+		// 2. response to Relay Chain Treasury pallet instance sent back;
+		// 3. XCM program completed;
+		assert_expected_events!(
+			AssetHubWestend,
+			vec![
+				RuntimeEvent::Balances(pallet_balances::Event::Transfer { .. }) => {},
+				RuntimeEvent::ParachainSystem(cumulus_pallet_parachain_system::Event::UpwardMessageSent { .. }) => {},
+				RuntimeEvent::MessageQueue(pallet_message_queue::Event::Processed { success: true ,.. }) => {},
+			]
+		);
+	});
+
+	CollectivesWestend::execute_with(|| {
+		type RuntimeEvent = <CollectivesWestend as Chain>::RuntimeEvent;
+		type RuntimeCall = <CollectivesWestend as Chain>::RuntimeCall;
+		type RuntimeOrigin = <CollectivesWestend as Chain>::RuntimeOrigin;
+		type Runtime = <CollectivesWestend as Chain>::Runtime;
+		type FellowshipTreasury =
+			<CollectivesWestend as CollectivesWestendPallet>::FellowshipTreasury;
+
+		// Fund Alice account from Fellowship Treasury.
+
+		let fellows_origin: RuntimeOrigin =
+			collectives_westend_runtime::fellowship::pallet_fellowship_origins::Origin::Fellows
+				.into();
+		let asset_hub_location: Location = (Parent, Parachain(1000)).into();
+		let native_asset = Location::parent();
+
+		let alice_location: Location = [Junction::AccountId32 {
+			network: None,
+			id: CollectivesWestend::account_id_of(ALICE).into(),
+		}]
+		.into();
+
+		let fellowship_treasury_spend_call =
+			RuntimeCall::FellowshipTreasury(pallet_treasury::Call::<Runtime, Instance1>::spend {
+				asset_kind: bx!(VersionedLocatableAsset::V4 {
+					location: asset_hub_location,
+					asset_id: native_asset.into(),
+				}),
+				amount: fellowship_spend_balance,
+				beneficiary: bx!(VersionedLocation::V4(alice_location)),
+				valid_from: None,
+			});
+
+		assert_ok!(fellowship_treasury_spend_call.dispatch(fellows_origin));
+
+		// Claim the spend.
+
+		let alice_signed = RuntimeOrigin::signed(CollectivesWestend::account_id_of(ALICE));
+		assert_ok!(FellowshipTreasury::payout(alice_signed.clone(), 0));
+
+		assert_expected_events!(
+			CollectivesWestend,
+			vec![
+				RuntimeEvent::FellowshipTreasury(pallet_treasury::Event::AssetSpendApproved { .. }) => {},
+				RuntimeEvent::FellowshipTreasury(pallet_treasury::Event::Paid { .. }) => {},
+			]
+		);
+	});
+
+	AssetHubWestend::execute_with(|| {
+		type RuntimeEvent = <AssetHubWestend as Chain>::RuntimeEvent;
+		type Balances = <AssetHubWestend as AssetHubWestendPallet>::Balances;
+
+		// Ensure that the funds deposited to Alice account.
+
+		let alice_account = AssetHubWestend::account_id_of(ALICE);
+		assert_eq!(
+			<Balances as Inspect<_>>::balance(&alice_account),
+			fellowship_spend_balance + init_alice_balance
+		);
+
+		// Assert events triggered by xcm pay program:
+		// 1. treasury asset transferred to spend beneficiary;
+		// 2. response to Relay Chain Treasury pallet instance sent back;
+		// 3. XCM program completed;
+		assert_expected_events!(
+			AssetHubWestend,
+			vec![
+				RuntimeEvent::Balances(pallet_balances::Event::Transfer { .. }) => {},
+				RuntimeEvent::XcmpQueue(cumulus_pallet_xcmp_queue::Event::XcmpMessageSent { .. }) => {},
+				RuntimeEvent::MessageQueue(pallet_message_queue::Event::Processed { success: true ,.. }) => {},
+			]
+		);
+	});
+}

cumulus/parachains/integration-tests/emulated/tests/collectives/collectives-westend/src/tests/mod.rs

@@ -0,0 +1,16 @@
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+mod fellowship_treasury;