Improve xcm emulator

Cargo.toml

@@ -50,14 +50,14 @@ members = [
 	"parachains/runtimes/collectives/collectives-polkadot",
 	"parachains/runtimes/contracts/contracts-rococo",
 	"parachains/runtimes/testing/penpal",
+	"parachains/integration-tests/emulated/common",
+	"parachains/integration-tests/emulated/assets/statemint",
 	"test/client",
 	"test/relay-sproof-builder",
 	"test/relay-validation-worker-provider",
 	"test/runtime",
 	"test/service",
 	"xcm/xcm-emulator",
-	"xcm/xcm-emulator/example",
-	"xcm/xcm-emulator/example/test-runtime",
 ]
 
 [profile.release]
@@ -68,4 +68,3 @@ opt-level = 3
 inherits = "release"
 lto = true
 codegen-units = 1
-

parachains/integration-tests/emulated/assets/statemint/Cargo.toml

@@ -0,0 +1,36 @@
+[package]
+name = "statemint-it"
+version = "1.0.0"
+authors = ["Parity Technologies <admin@parity.io>"]
+edition = "2021"
+description = "Statemint parachain runtime integration tests with xcm-emulator"
+
+[dependencies]
+codec = { package = "parity-scale-codec", version = "3.4.0", default-features = false }
+
+# Substrate
+sp-runtime = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "master" }
+frame-support = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "master" }
+frame-system = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "master" }
+sp-core = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "master" }
+sp-weights = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "master" }
+pallet-balances = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "master" }
+pallet-assets = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "master" }
+
+# Polkadot
+polkadot-core-primitives = { default-features = false, git = "https://github.com/paritytech/polkadot", branch = "master" }
+polkadot-parachain = { default-features = false, git = "https://github.com/paritytech/polkadot", branch = "master" }
+polkadot-runtime-parachains = { git = "https://github.com/paritytech/polkadot", branch = "master" }
+polkadot-runtime = { git = "https://github.com/paritytech/polkadot", branch = "master" }
+xcm = { default-features = false, git = "https://github.com/paritytech/polkadot", branch = "master" }
+xcm-executor = { default-features = false, git = "https://github.com/paritytech/polkadot", branch = "master" }
+pallet-xcm = { default-features = false, git = "https://github.com/paritytech/polkadot", branch = "master" }
+
+# Cumulus
+parachains-common = { path = "../../../../common" }
+penpal-runtime = { path = "../../../../runtimes/testing/penpal" }
+statemint-runtime = { path = "../../../../runtimes/assets/statemint" }
+
+# Local
+xcm-emulator = { default-features = false, path = "../../../../../xcm/xcm-emulator" }
+integration-tests-common = { default-features = false, path = "../../common" }

parachains/integration-tests/emulated/assets/statemint/src/lib.rs

@@ -0,0 +1,33 @@
+pub use codec::Encode;
+pub use frame_support::{
+	assert_ok, instances::Instance1, pallet_prelude::Weight, traits::fungibles::Inspect,
+};
+pub use integration_tests_common::{
+	constants::{
+		accounts::{ALICE, BOB},
+		polkadot::ED as POLKADOT_ED,
+		PROOF_SIZE_THRESHOLD, REF_TIME_THRESHOLD, XCM_V3,
+	},
+	AccountId, BHKusama, BHKusamaPallet, BHKusamaReceiver, BHKusamaSender, BHPolkadot,
+	BHPolkadotPallet, BHPolkadotReceiver, BHPolkadotSender, Collectives, CollectivesPallet,
+	CollectivesReceiver, CollectivesSender, Kusama, KusamaMockNet, KusamaPallet, KusamaReceiver,
+	KusamaSender, PenpalKusama, PenpalKusamaReceiver, PenpalKusamaSender, PenpalPolkadot,
+	PenpalPolkadotReceiver, PenpalPolkadotSender, Polkadot, PolkadotMockNet, PolkadotPallet,
+	PolkadotReceiver, PolkadotSender, Statemine, StateminePallet, StatemineReceiver,
+	StatemineSender, Statemint, StatemintPallet, StatemintReceiver, StatemintSender,
+};
+pub use polkadot_core_primitives::InboundDownwardMessage;
+pub use xcm::{
+	prelude::*,
+	v3::{
+		Error,
+		NetworkId::{Kusama as KusamaId, Polkadot as PolkadotId},
+	},
+};
+pub use xcm_emulator::{
+	assert_expected_events, bx, cumulus_pallet_dmp_queue, helpers::weight_within_threshold,
+	Parachain as Para, RelayChain as Relay, TestExt,
+};
+
+#[cfg(test)]
+mod tests;

parachains/integration-tests/emulated/assets/statemint/src/tests/mod.rs

@@ -0,0 +1,3 @@
+mod reserve_transfer;
+mod teleport;
+mod transact;

parachains/integration-tests/emulated/assets/statemint/src/tests/reserve_transfer.rs

@@ -0,0 +1,63 @@
+use crate::*;
+
+#[test]
+fn reserve_transfer_native_asset_from_relay_to_assets() {
+	// Init tests variables
+	let amount = POLKADOT_ED * 1000;
+	let relay_sender_balance_before = Polkadot::account_data_of(PolkadotSender::get()).free;
+	let para_receiver_balance_before = Statemint::account_data_of(StatemintReceiver::get()).free;
+
+	let origin = <Polkadot as Relay>::RuntimeOrigin::signed(PolkadotSender::get());
+	let assets_para_destination: VersionedMultiLocation =
+		Polkadot::child_location_of(Statemint::para_id()).into();
+	let beneficiary: VersionedMultiLocation =
+		AccountId32 { network: None, id: StatemintReceiver::get().into() }.into();
+	let native_assets: VersionedMultiAssets = (Here, amount).into();
+	let fee_asset_item = 0;
+	let weight_limit = WeightLimit::Unlimited;
+
+	// Send XCM message from Relay Chain
+	Polkadot::execute_with(|| {
+		assert_ok!(<Polkadot as PolkadotPallet>::XcmPallet::limited_reserve_transfer_assets(
+			origin,
+			bx!(assets_para_destination),
+			bx!(beneficiary),
+			bx!(native_assets),
+			fee_asset_item,
+			weight_limit,
+		));
+
+		type RuntimeEvent = <Polkadot as Relay>::RuntimeEvent;
+
+		assert_expected_events!(
+			Polkadot,
+			vec![
+				RuntimeEvent::XcmPallet(pallet_xcm::Event::Attempted(Outcome::Complete(weight))) => {
+					weight: weight_within_threshold((REF_TIME_THRESHOLD, PROOF_SIZE_THRESHOLD), Weight::from_parts(2_000_000_000, 0), *weight),
+				},
+			]
+		);
+	});
+
+	// Receive XCM message in Assets Parachain
+	Statemint::execute_with(|| {
+		type RuntimeEvent = <Statemint as Para>::RuntimeEvent;
+
+		assert_expected_events!(
+			Statemint,
+			vec![
+				RuntimeEvent::DmpQueue(cumulus_pallet_dmp_queue::Event::ExecutedDownward {
+					outcome: Outcome::Incomplete(_, Error::UntrustedReserveLocation),
+					..
+				}) => {},
+			]
+		);
+	});
+
+	// Check if balances are updated accordingly in Relay Chain and Assets Parachain
+	let relay_sender_balance_after = Polkadot::account_data_of(PolkadotSender::get()).free;
+	let para_sender_balance_after = Statemint::account_data_of(StatemintReceiver::get()).free;
+
+	assert_eq!(relay_sender_balance_before - amount, relay_sender_balance_after);
+	assert_eq!(para_sender_balance_after, para_receiver_balance_before);
+}