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Treasury Spend Detects Relative Locations of Native Asset (#233)
Treasury Spend detects the relative locations of native asset to compare
origin's spend limits.
When a spend is approved for a native asset located on Asset Hub, the
AssetRate pallet instance does not recognize the location (parent: 1,
here) as a native asset. Therefore, it requires the asset rate to be set
in advance to the rate of `1`. To address this issue in this PR, we
introduce new types to wrap the `AssetRate` implementation of balance
conversion. These types match the native asset's relative locations and
result in a 1:1 balance conversion in such cases.
In addition we provide integration tests to cover these cases.
Examples:
Treasury pallet on Relay Chain accepts the spend of the native asset on
Asset Hub with it's ID presented as `VersionedLocatableAsset` type
```
{
`location`: (0, Parachain(1000)),
`asset_id`: (1, Here),
}
```
and it's balance should be converted 1:1 by treasury pallet's
`BalanceConverter` type.
Note: I plan to introduce a similar but configurable implementation in
the polkadot-sdk and utilize it here. However, to get this change in the
next release, I open this PR first.
Frame version: paritytech/polkadot-sdk#3659
---------
Co-authored-by: joe petrowski <[email protected]>
Co-authored-by: Branislav Kontur <[email protected]>
Co-authored-by: Bastian Köcher <[email protected]>- Loading branch information
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271
integration-tests/emulated/tests/assets/asset-hub-kusama/src/tests/treasury.rs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,271 @@ | ||
| // 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. | ||
|
|
||
| //! Tests concerning the Kusama Treasury. | ||
| use crate::*; | ||
| 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 kusama_runtime::OriginCaller; | ||
| use kusama_runtime_constants::currency::GRAND; | ||
| use runtime_common::impls::VersionedLocatableAsset; | ||
| use xcm_executor::traits::ConvertLocation; | ||
|
|
||
| // Fund Treasury account on Asset Hub from Treasury account on Relay Chain with KSMs. | ||
| #[test] | ||
| fn spend_ksm_on_asset_hub() { | ||
| // initial treasury balance on Asset Hub in KSMs. | ||
| let treasury_balance = 9_000 * GRAND; | ||
| // the balance spend on Asset Hub. | ||
| let treasury_spend_balance = 1_000 * GRAND; | ||
|
|
||
| let init_alice_balance = AssetHubKusama::execute_with(|| { | ||
| <<AssetHubKusama as AssetHubKusamaPallet>::Balances as Inspect<_>>::balance( | ||
| &AssetHubKusama::account_id_of(ALICE), | ||
| ) | ||
| }); | ||
|
|
||
| Kusama::execute_with(|| { | ||
| type RuntimeEvent = <Kusama as Chain>::RuntimeEvent; | ||
| type RuntimeCall = <Kusama as Chain>::RuntimeCall; | ||
| type Runtime = <Kusama as Chain>::Runtime; | ||
| type Balances = <Kusama as KusamaPallet>::Balances; | ||
| type Treasury = <Kusama as KusamaPallet>::Treasury; | ||
|
|
||
| // Fund Treasury account on Asset Hub with KSMs. | ||
|
|
||
| let root = <Kusama 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 `dispatch_as` `Signed(treasury_account)`. | ||
| assert_ok!(teleport_call.dispatch(root)); | ||
|
|
||
| assert_expected_events!( | ||
| Kusama, | ||
| vec![ | ||
| RuntimeEvent::XcmPallet(pallet_xcm::Event::Sent { .. }) => {}, | ||
| ] | ||
| ); | ||
| }); | ||
|
|
||
| Kusama::execute_with(|| { | ||
| type RuntimeEvent = <Kusama as Chain>::RuntimeEvent; | ||
| type RuntimeCall = <Kusama as Chain>::RuntimeCall; | ||
| type RuntimeOrigin = <Kusama as Chain>::RuntimeOrigin; | ||
| type Runtime = <Kusama as Chain>::Runtime; | ||
| type Treasury = <Kusama as KusamaPallet>::Treasury; | ||
|
|
||
| // Fund Alice account from Kusama Treasury account on Asset Hub. | ||
|
|
||
| let treasury_origin: RuntimeOrigin = | ||
| kusama_runtime::governance::pallet_custom_origins::Origin::Treasurer.into(); | ||
|
|
||
| let alice_location: Location = | ||
| [Junction::AccountId32 { network: None, id: Kusama::account_id_of(ALICE).into() }] | ||
| .into(); | ||
| let asset_hub_location: Location = [Parachain(1000)].into(); | ||
| let native_asset_on_asset_hub = 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_on_asset_hub.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(Kusama::account_id_of(BOB)); | ||
| assert_ok!(Treasury::payout(bob_signed.clone(), 0)); | ||
|
|
||
| assert_expected_events!( | ||
| Kusama, | ||
| vec![ | ||
| RuntimeEvent::Treasury(pallet_treasury::Event::AssetSpendApproved { .. }) => {}, | ||
| RuntimeEvent::Treasury(pallet_treasury::Event::Paid { .. }) => {}, | ||
| ] | ||
| ); | ||
| }); | ||
|
|
||
| AssetHubKusama::execute_with(|| { | ||
| type RuntimeEvent = <AssetHubKusama as Chain>::RuntimeEvent; | ||
| type Balances = <AssetHubKusama as AssetHubKusamaPallet>::Balances; | ||
|
|
||
| // Ensure that the funds deposited to Alice account. | ||
|
|
||
| let alice_account = AssetHubKusama::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!( | ||
| AssetHubKusama, | ||
| 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_kusama_runtime::xcm_config::LocationToAccountId::convert_location( | ||
| &treasury_location, | ||
| ) | ||
| .unwrap(); | ||
| let asset_hub_location = | ||
| v3::Location::new(0, v3::Junction::Parachain(AssetHubKusama::para_id().into())); | ||
| let root = <Kusama 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 = Kusama::account_id_of(ALICE); | ||
| let bob: AccountId = Kusama::account_id_of(BOB); | ||
| let bob_signed = <Kusama as Chain>::RuntimeOrigin::signed(bob.clone()); | ||
|
|
||
| AssetHubKusama::execute_with(|| { | ||
| type Assets = <AssetHubKusama as AssetHubKusamaPallet>::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,); | ||
| }); | ||
|
|
||
| Kusama::execute_with(|| { | ||
| type RuntimeEvent = <Kusama as Chain>::RuntimeEvent; | ||
| type Treasury = <Kusama as KusamaPallet>::Treasury; | ||
| type AssetRate = <Kusama as KusamaPallet>::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!( | ||
| Kusama, | ||
| vec![ | ||
| RuntimeEvent::Treasury(pallet_treasury::Event::Paid { .. }) => {}, | ||
| ] | ||
| ); | ||
| }); | ||
|
|
||
| AssetHubKusama::execute_with(|| { | ||
| type RuntimeEvent = <AssetHubKusama as Chain>::RuntimeEvent; | ||
| type Assets = <AssetHubKusama as AssetHubKusamaPallet>::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!( | ||
| AssetHubKusama, | ||
| 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,); | ||
| }); | ||
|
|
||
| Kusama::execute_with(|| { | ||
| type RuntimeEvent = <Kusama as Chain>::RuntimeEvent; | ||
| type Treasury = <Kusama as KusamaPallet>::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!( | ||
| Kusama, | ||
| vec![ | ||
| RuntimeEvent::Treasury(pallet_treasury::Event::SpendProcessed { .. }) => {}, | ||
| ] | ||
| ); | ||
| }); | ||
| } |
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