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XCM: Limit the max number of assets weighable in MultiAssets (#6786)

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* Limit the max number of assets weighable in MultiAssets

* Apply suggestions from code review

Co-authored-by: Gavin Wood <gavin@parity.io>

* Add tests

* cargo fmt

* Include proof size weight in tests

* Add comments

---------

Co-authored-by: Gavin Wood <gavin@parity.io>
This commit is contained in:
Keith Yeung
2023-02-28 01:12:12 -08:00
committed by GitHub
parent 65fdcf3413
commit 56f6b39da8
4 changed files with 58 additions and 9 deletions
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polkadot/runtime/kusama/src/xcm_config.rs
+16
View File
@@ -457,3 +457,19 @@ impl pallet_xcm::Config for Runtime {
#[cfg(feature = "runtime-benchmarks")]
type ReachableDest = ReachableDest;
}
#[test]
fn karura_liquid_staking_xcm_has_sane_weight_upper_limt() {
use parity_scale_codec::Decode;
use xcm::VersionedXcm;
use xcm_executor::traits::WeightBounds;
let blob = hex_literal::hex!("02140004000000000700e40b540213000000000700e40b54020006010700c817a804341801000006010b00c490bf4302140d010003ffffffff000100411f");
let Ok(VersionedXcm::V2(old_xcm)) =
VersionedXcm::<super::RuntimeCall>::decode(&mut &blob[..]) else { panic!("can't decode XCM blob") };
let mut xcm: Xcm<super::RuntimeCall> =
old_xcm.try_into().expect("conversion from v2 to v3 failed");
let weight = <XcmConfig as xcm_executor::Config>::Weigher::weight(&mut xcm)
.expect("weighing XCM failed");
assert_eq!(weight, Weight::from_parts(20_313_281_000, 65536));
}