Files
pezkuwi-subxt/polkadot/xcm/xcm-builder/src/tests/expecting.rs
T
Francisco Aguirre 8428f678fe XCMv4 (#1230)
# Note for reviewer

Most changes are just syntax changes necessary for the new version.
Most important files should be the ones under the `xcm` folder.

# Description 

Added XCMv4.

## Removed `Multi` prefix
The following types have been renamed:
- MultiLocation -> Location
- MultiAsset -> Asset
- MultiAssets -> Assets
- InteriorMultiLocation -> InteriorLocation
- MultiAssetFilter -> AssetFilter
- VersionedMultiAsset -> VersionedAsset
- WildMultiAsset -> WildAsset
- VersionedMultiLocation -> VersionedLocation

In order to fix a name conflict, the `Assets` in `xcm-executor` were
renamed to `HoldingAssets`, as they represent assets in holding.

## Removed `Abstract` asset id

It was not being used anywhere and this simplifies the code.

Now assets are just constructed as follows:

```rust
let asset: Asset = (AssetId(Location::new(1, Here)), 100u128).into();
```

No need for specifying `Concrete` anymore.

## Outcome is now a named fields struct

Instead of

```rust
pub enum Outcome {
  Complete(Weight),
  Incomplete(Weight, Error),
  Error(Error),
}
```

we now have

```rust
pub enum Outcome {
  Complete { used: Weight },
  Incomplete { used: Weight, error: Error },
  Error { error: Error },
}
```

## Added Reanchorable trait

Now both locations and assets implement this trait, making it easier to
reanchor both.

## New syntax for building locations and junctions

Now junctions are built using the following methods:

```rust
let location = Location {
    parents: 1,
    interior: [Parachain(1000), PalletInstance(50), GeneralIndex(1984)].into()
};
```

or

```rust
let location = Location::new(1, [Parachain(1000), PalletInstance(50), GeneralIndex(1984)]);
```

And they are matched like so:

```rust
match location.unpack() {
  (1, [Parachain(id)]) => ...
  (0, Here) => ...,
  (1, [_]) => ...,
}
```

This syntax is mandatory in v4, and has been also implemented for v2 and
v3 for easier migration.

This was needed to make all sizes smaller.

# TODO
- [x] Scaffold v4
- [x] Port github.com/paritytech/polkadot/pull/7236
- [x] Remove `Multi` prefix
- [x] Remove `Abstract` asset id

---------

Co-authored-by: command-bot <>
Co-authored-by: Keith Yeung <kungfukeith11@gmail.com>
2024-01-16 18:18:04 +00:00

234 lines
5.8 KiB
Rust

// Copyright (C) Parity Technologies (UK) Ltd.
// This file is part of Polkadot.
// Polkadot is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Polkadot is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Polkadot. If not, see <http://www.gnu.org/licenses/>.
use super::*;
#[test]
fn expect_pallet_should_work() {
AllowUnpaidFrom::set(vec![[Parachain(1)].into()]);
// They want to transfer 100 of our native asset from sovereign account of parachain #1 into #2
// and let them know to hand it to account #3.
let message = Xcm(vec![ExpectPallet {
index: 1,
name: b"Balances".as_ref().into(),
module_name: b"pallet_balances".as_ref().into(),
crate_major: 1,
min_crate_minor: 42,
}]);
let mut hash = fake_message_hash(&message);
let r = XcmExecutor::<TestConfig>::prepare_and_execute(
Parachain(1),
message,
&mut hash,
Weight::from_parts(50, 50),
Weight::zero(),
);
assert_eq!(r, Outcome::Complete { used: Weight::from_parts(10, 10) });
let message = Xcm(vec![ExpectPallet {
index: 1,
name: b"Balances".as_ref().into(),
module_name: b"pallet_balances".as_ref().into(),
crate_major: 1,
min_crate_minor: 41,
}]);
let mut hash = fake_message_hash(&message);
let r = XcmExecutor::<TestConfig>::prepare_and_execute(
Parachain(1),
message,
&mut hash,
Weight::from_parts(50, 50),
Weight::zero(),
);
assert_eq!(r, Outcome::Complete { used: Weight::from_parts(10, 10) });
}
#[test]
fn expect_pallet_should_fail_correctly() {
AllowUnpaidFrom::set(vec![[Parachain(1)].into()]);
let message = Xcm(vec![ExpectPallet {
index: 1,
name: b"Balances".as_ref().into(),
module_name: b"pallet_balances".as_ref().into(),
crate_major: 1,
min_crate_minor: 60,
}]);
let mut hash = fake_message_hash(&message);
let r = XcmExecutor::<TestConfig>::prepare_and_execute(
Parachain(1),
message,
&mut hash,
Weight::from_parts(50, 50),
Weight::zero(),
);
assert_eq!(
r,
Outcome::Incomplete {
used: Weight::from_parts(10, 10),
error: XcmError::VersionIncompatible
}
);
let message = Xcm(vec![ExpectPallet {
index: 1,
name: b"System".as_ref().into(),
module_name: b"pallet_balances".as_ref().into(),
crate_major: 1,
min_crate_minor: 42,
}]);
let mut hash = fake_message_hash(&message);
let r = XcmExecutor::<TestConfig>::prepare_and_execute(
Parachain(1),
message,
&mut hash,
Weight::from_parts(50, 50),
Weight::zero(),
);
assert_eq!(
r,
Outcome::Incomplete { used: Weight::from_parts(10, 10), error: XcmError::NameMismatch }
);
let message = Xcm(vec![ExpectPallet {
index: 1,
name: b"Balances".as_ref().into(),
module_name: b"pallet_system".as_ref().into(),
crate_major: 1,
min_crate_minor: 42,
}]);
let mut hash = fake_message_hash(&message);
let r = XcmExecutor::<TestConfig>::prepare_and_execute(
Parachain(1),
message,
&mut hash,
Weight::from_parts(50, 50),
Weight::zero(),
);
assert_eq!(
r,
Outcome::Incomplete { used: Weight::from_parts(10, 10), error: XcmError::NameMismatch }
);
let message = Xcm(vec![ExpectPallet {
index: 0,
name: b"Balances".as_ref().into(),
module_name: b"pallet_balances".as_ref().into(),
crate_major: 1,
min_crate_minor: 42,
}]);
let mut hash = fake_message_hash(&message);
let r = XcmExecutor::<TestConfig>::prepare_and_execute(
Parachain(1),
message,
&mut hash,
Weight::from_parts(50, 50),
Weight::zero(),
);
assert_eq!(
r,
Outcome::Incomplete { used: Weight::from_parts(10, 10), error: XcmError::NameMismatch }
);
let message = Xcm(vec![ExpectPallet {
index: 2,
name: b"Balances".as_ref().into(),
module_name: b"pallet_balances".as_ref().into(),
crate_major: 1,
min_crate_minor: 42,
}]);
let mut hash = fake_message_hash(&message);
let r = XcmExecutor::<TestConfig>::prepare_and_execute(
Parachain(1),
message,
&mut hash,
Weight::from_parts(50, 50),
Weight::zero(),
);
assert_eq!(
r,
Outcome::Incomplete { used: Weight::from_parts(10, 10), error: XcmError::PalletNotFound }
);
let message = Xcm(vec![ExpectPallet {
index: 1,
name: b"Balances".as_ref().into(),
module_name: b"pallet_balances".as_ref().into(),
crate_major: 2,
min_crate_minor: 42,
}]);
let mut hash = fake_message_hash(&message);
let r = XcmExecutor::<TestConfig>::prepare_and_execute(
Parachain(1),
message,
&mut hash,
Weight::from_parts(50, 50),
Weight::zero(),
);
assert_eq!(
r,
Outcome::Incomplete {
used: Weight::from_parts(10, 10),
error: XcmError::VersionIncompatible
}
);
let message = Xcm(vec![ExpectPallet {
index: 1,
name: b"Balances".as_ref().into(),
module_name: b"pallet_balances".as_ref().into(),
crate_major: 0,
min_crate_minor: 42,
}]);
let mut hash = fake_message_hash(&message);
let r = XcmExecutor::<TestConfig>::prepare_and_execute(
Parachain(1),
message,
&mut hash,
Weight::from_parts(50, 50),
Weight::zero(),
);
assert_eq!(
r,
Outcome::Incomplete {
used: Weight::from_parts(10, 10),
error: XcmError::VersionIncompatible
}
);
let message = Xcm(vec![ExpectPallet {
index: 1,
name: b"Balances".as_ref().into(),
module_name: b"pallet_balances".as_ref().into(),
crate_major: 1,
min_crate_minor: 43,
}]);
let mut hash = fake_message_hash(&message);
let r = XcmExecutor::<TestConfig>::prepare_and_execute(
Parachain(1),
message,
&mut hash,
Weight::from_parts(50, 50),
Weight::zero(),
);
assert_eq!(
r,
Outcome::Incomplete {
used: Weight::from_parts(10, 10),
error: XcmError::VersionIncompatible
}
);
}