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Externalize received fees checks from `receive_reserve_asset_deposite…
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…d_from_different_consensus_works` (#3409)

Backport of patch-fix:
#3404
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@bkontur
bkontur authored Feb 20, 2024
1 parent d250a6e commit ff40310
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1 change: 0 additions & 1 deletion Cargo.lock
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176 changes: 166 additions & 10 deletions cumulus/parachains/runtimes/assets/asset-hub-rococo/tests/tests.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -22,13 +22,13 @@ use asset_hub_rococo_runtime::{
xcm_config::{
bridging, AssetFeeAsExistentialDepositMultiplierFeeCharger, CheckingAccount,
ForeignAssetFeeAsExistentialDepositMultiplierFeeCharger, ForeignCreatorsSovereignAccountOf,
LocationToAccountId, TokenLocation, TokenLocationV3, TrustBackedAssetsPalletLocation,
TrustBackedAssetsPalletLocationV3, XcmConfig,
LocationToAccountId, StakingPot, TokenLocation, TokenLocationV3,
TrustBackedAssetsPalletLocation, TrustBackedAssetsPalletLocationV3, XcmConfig,
},
AllPalletsWithoutSystem, AssetConversion, AssetDeposit, Assets, Balances, CollatorSelection,
ExistentialDeposit, ForeignAssets, ForeignAssetsInstance, MetadataDepositBase,
MetadataDepositPerByte, ParachainSystem, Runtime, RuntimeCall, RuntimeEvent, SessionKeys,
ToWestendXcmRouterInstance, TrustBackedAssetsInstance, XcmpQueue,
MetadataDepositPerByte, ParachainSystem, Runtime, RuntimeCall, RuntimeEvent, RuntimeOrigin,
SessionKeys, ToWestendXcmRouterInstance, TrustBackedAssetsInstance, XcmpQueue,
};
use asset_test_utils::{
test_cases_over_bridge::TestBridgingConfig, CollatorSessionKey, CollatorSessionKeys,
Expand All @@ -49,6 +49,7 @@ use frame_support::{
use parachains_common::{AccountId, AssetIdForTrustBackedAssets, AuraId, Balance};
use sp_consensus_aura::SlotDuration;
use sp_runtime::traits::MaybeEquivalence;
use sp_std::ops::Mul;
use std::convert::Into;
use testnet_parachains_constants::rococo::{consensus::*, currency::UNITS, fee::WeightToFee};
use xcm::latest::prelude::{Assets as XcmAssets, *};
Expand Down Expand Up @@ -85,6 +86,52 @@ fn slot_durations() -> SlotDurations {
}
}

fn setup_pool_for_paying_fees_with_foreign_assets(
(foreign_asset_owner, foreign_asset_id_location, foreign_asset_id_minimum_balance): (
AccountId,
xcm::v3::Location,
Balance,
),
) {
let existential_deposit = ExistentialDeposit::get();

// setup a pool to pay fees with `foreign_asset_id_location` tokens
let pool_owner: AccountId = [14u8; 32].into();
let native_asset = xcm::v3::Location::parent();
let pool_liquidity: Balance =
existential_deposit.max(foreign_asset_id_minimum_balance).mul(100_000);

let _ = Balances::force_set_balance(
RuntimeOrigin::root(),
pool_owner.clone().into(),
(existential_deposit + pool_liquidity).mul(2).into(),
);

assert_ok!(ForeignAssets::mint(
RuntimeOrigin::signed(foreign_asset_owner),
foreign_asset_id_location.into(),
pool_owner.clone().into(),
(foreign_asset_id_minimum_balance + pool_liquidity).mul(2).into(),
));

assert_ok!(AssetConversion::create_pool(
RuntimeOrigin::signed(pool_owner.clone()),
Box::new(native_asset.into()),
Box::new(foreign_asset_id_location.into())
));

assert_ok!(AssetConversion::add_liquidity(
RuntimeOrigin::signed(pool_owner.clone()),
Box::new(native_asset.into()),
Box::new(foreign_asset_id_location.into()),
pool_liquidity,
pool_liquidity,
1,
1,
pool_owner,
));
}

#[test]
fn test_buy_and_refund_weight_in_native() {
ExtBuilder::<Runtime>::default()
Expand Down Expand Up @@ -1056,7 +1103,8 @@ fn limited_reserve_transfer_assets_for_native_asset_over_bridge_works(

mod asset_hub_rococo_tests {
use super::*;
use asset_hub_rococo_runtime::{PolkadotXcm, RuntimeOrigin};
use asset_hub_rococo_runtime::PolkadotXcm;
use xcm_executor::traits::ConvertLocation;

fn bridging_to_asset_hub_westend() -> TestBridgingConfig {
let _ = PolkadotXcm::force_xcm_version(
Expand All @@ -1081,27 +1129,135 @@ mod asset_hub_rococo_tests {
}

#[test]
fn receive_reserve_asset_deposited_wnd_from_asset_hub_westend_works() {
fn receive_reserve_asset_deposited_wnd_from_asset_hub_westend_fees_paid_by_pool_swap_works() {
const BLOCK_AUTHOR_ACCOUNT: [u8; 32] = [13; 32];
let block_author_account = AccountId::from(BLOCK_AUTHOR_ACCOUNT);
let staking_pot = StakingPot::get();

let foreign_asset_id_location = xcm::v3::Location::new(
2,
[xcm::v3::Junction::GlobalConsensus(xcm::v3::NetworkId::Westend)],
);
let foreign_asset_id_minimum_balance = 1_000_000_000;
// sovereign account as foreign asset owner (can be whoever for this scenario)
let foreign_asset_owner =
LocationToAccountId::convert_location(&Location::parent()).unwrap();
let foreign_asset_create_params =
(foreign_asset_owner, foreign_asset_id_location, foreign_asset_id_minimum_balance);

asset_test_utils::test_cases_over_bridge::receive_reserve_asset_deposited_from_different_consensus_works::<
Runtime,
AllPalletsWithoutSystem,
XcmConfig,
ForeignAssetsInstance,
>(
collator_session_keys().add(collator_session_key(BLOCK_AUTHOR_ACCOUNT)),
ExistentialDeposit::get(),
AccountId::from([73; 32]),
block_author_account,
// receiving WNDs
foreign_asset_create_params.clone(),
1000000000000,
|| {
// setup pool for paying fees to touch `SwapFirstAssetTrader`
setup_pool_for_paying_fees_with_foreign_assets(foreign_asset_create_params);
// staking pot account for collecting local native fees from `BuyExecution`
let _ = Balances::force_set_balance(RuntimeOrigin::root(), StakingPot::get().into(), ExistentialDeposit::get());
// prepare bridge configuration
bridging_to_asset_hub_westend()
},
(
[PalletInstance(bp_bridge_hub_rococo::WITH_BRIDGE_ROCOCO_TO_WESTEND_MESSAGES_PALLET_INDEX)].into(),
GlobalConsensus(Westend),
[Parachain(1000)].into()
),
|| {
// check staking pot for ED
assert_eq!(Balances::free_balance(&staking_pot), ExistentialDeposit::get());
// check now foreign asset for staking pot
assert_eq!(
ForeignAssets::balance(
foreign_asset_id_location.into(),
&staking_pot
),
0
);
},
|| {
// `SwapFirstAssetTrader` - staking pot receives xcm fees in ROCs
assert!(
Balances::free_balance(&staking_pot) > ExistentialDeposit::get()
);
// staking pot receives no foreign assets
assert_eq!(
ForeignAssets::balance(
foreign_asset_id_location.into(),
&staking_pot
),
0
);
}
)
}

#[test]
fn receive_reserve_asset_deposited_wnd_from_asset_hub_westend_fees_paid_by_sufficient_asset_works(
) {
const BLOCK_AUTHOR_ACCOUNT: [u8; 32] = [13; 32];
let block_author_account = AccountId::from(BLOCK_AUTHOR_ACCOUNT);
let staking_pot = StakingPot::get();

let foreign_asset_id_location = xcm::v3::Location::new(
2,
[xcm::v3::Junction::GlobalConsensus(xcm::v3::NetworkId::Westend)],
);
let foreign_asset_id_minimum_balance = 1_000_000_000;
// sovereign account as foreign asset owner (can be whoever for this scenario)
let foreign_asset_owner =
LocationToAccountId::convert_location(&Location::parent()).unwrap();
let foreign_asset_create_params =
(foreign_asset_owner, foreign_asset_id_location, foreign_asset_id_minimum_balance);

asset_test_utils::test_cases_over_bridge::receive_reserve_asset_deposited_from_different_consensus_works::<
Runtime,
AllPalletsWithoutSystem,
XcmConfig,
LocationToAccountId,
ForeignAssetsInstance,
>(
collator_session_keys().add(collator_session_key(BLOCK_AUTHOR_ACCOUNT)),
ExistentialDeposit::get(),
AccountId::from([73; 32]),
AccountId::from(BLOCK_AUTHOR_ACCOUNT),
block_author_account.clone(),
// receiving WNDs
(xcm::v3::Location::new(2, [xcm::v3::Junction::GlobalConsensus(xcm::v3::NetworkId::Westend)]), 1000000000000, 1_000_000_000),
foreign_asset_create_params,
1000000000000,
bridging_to_asset_hub_westend,
(
[PalletInstance(bp_bridge_hub_rococo::WITH_BRIDGE_ROCOCO_TO_WESTEND_MESSAGES_PALLET_INDEX)].into(),
GlobalConsensus(Westend),
[Parachain(1000)].into()
)
),
|| {
// check block author before
assert_eq!(
ForeignAssets::balance(
foreign_asset_id_location.into(),
&block_author_account
),
0
);
},
|| {
// `TakeFirstAssetTrader` puts fees to the block author
assert!(
ForeignAssets::balance(
foreign_asset_id_location.into(),
&block_author_account
) > 0
);
// `SwapFirstAssetTrader` did not work
assert_eq!(Balances::free_balance(&staking_pot), 0);
}
)
}

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