[testnets][xcm-emulator] add bridge-hub-westend and hook it up to emulator (#2204)

`bridge-hub-westend-runtime` was added to cumulus/parachains, but wasn't
hooked up to xcm-emulator to run tests against it.

This commit addresses that ^.

Signed-off-by: Adrian Catangiu <adrian@parity.io>

cumulus/parachains/integration-tests/emulated/common/src/constants.rs

@@ -1160,3 +1160,60 @@ pub mod bridge_hub_rococo {
 		}
 	}
 }
+
+// Bridge Hub Westend
+pub mod bridge_hub_westend {
+	use super::*;
+	pub const PARA_ID: u32 = 1013;
+	pub const ED: Balance = parachains_common::westend::currency::EXISTENTIAL_DEPOSIT;
+
+	pub fn genesis() -> Storage {
+		let genesis_config = serde_json::json!({
+			"balances": {
+				"balances": accounts::init_balances()
+					.iter()
+					.cloned()
+					.map(|k| (k, ED * 4096))
+					.collect::<Vec<_>>(),
+			},
+			"parachainInfo": {
+				"parachainId": cumulus_primitives_core::ParaId::from(PARA_ID),
+			},
+			"collatorSelection": {
+				"invulnerables": collators::invulnerables()
+					.iter()
+					.cloned()
+					.map(|(acc, _)| acc)
+					.collect::<Vec<_>>(),
+				"candidacyBond": ED * 16,
+			},
+			"session": {
+				"keys": collators::invulnerables()
+					.into_iter()
+					.map(|(acc, aura)| {
+						(
+							acc.clone(),                                     // account id
+							acc,                                             // validator id
+							bridge_hub_westend_runtime::SessionKeys { aura }, // session keys
+						)
+					})
+					.collect::<Vec<_>>(),
+			},
+			"polkadotXcm": {
+				"safeXcmVersion": Some(SAFE_XCM_VERSION),
+			},
+			"bridgeRococoGrandpa": {
+				"owner": Some(get_account_id_from_seed::<sr25519::Public>(accounts::BOB)),
+			},
+			"bridgeRococoMessages": {
+				"owner": Some(get_account_id_from_seed::<sr25519::Public>(accounts::BOB)),
+			}
+		});
+
+		build_genesis_storage(
+			genesis_config,
+			bridge_hub_westend_runtime::WASM_BINARY
+				.expect("WASM binary was not built, please build it!"),
+		)
+	}
+}

cumulus/parachains/integration-tests/emulated/common/src/lib.rs

@@ -20,8 +20,8 @@ pub mod xcm_helpers;
 
 use constants::{
 	accounts::{ALICE, BOB},
-	asset_hub_rococo, asset_hub_westend, asset_hub_wococo, bridge_hub_rococo, penpal, rococo,
-	westend,
+	asset_hub_rococo, asset_hub_westend, asset_hub_wococo, bridge_hub_rococo, bridge_hub_westend,
+	penpal, rococo, westend,
 };
 use impls::{RococoWococoMessageHandler, WococoRococoMessageHandler};
 pub use paste;
@@ -118,6 +118,23 @@ decl_test_parachains! {
 			AssetConversion: asset_hub_westend_runtime::AssetConversion,
 		}
 	},
+	pub struct BridgeHubWestend {
+		genesis = bridge_hub_westend::genesis(),
+		on_init = {
+			bridge_hub_westend_runtime::AuraExt::on_initialize(1);
+		},
+		runtime = bridge_hub_westend_runtime,
+		core = {
+			XcmpMessageHandler: bridge_hub_westend_runtime::XcmpQueue,
+			LocationToAccountId: bridge_hub_westend_runtime::xcm_config::LocationToAccountId,
+			ParachainInfo: bridge_hub_westend_runtime::ParachainInfo,
+			MessageProcessor: DefaultParaMessageProcessor<BridgeHubWestend>,
+		},
+		pallets = {
+			PolkadotXcm: bridge_hub_westend_runtime::PolkadotXcm,
+			Balances: bridge_hub_westend_runtime::Balances,
+		}
+	},
 	pub struct PenpalWestendA {
 		genesis = penpal::genesis(penpal::PARA_ID_A),
 		on_init = {
@@ -257,6 +274,7 @@ decl_test_networks! {
 		relay_chain = Westend,
 		parachains = vec![
 			AssetHubWestend,
+			BridgeHubWestend,
 			PenpalWestendA,
 		],
 		bridge = ()
@@ -323,6 +341,10 @@ impl_assert_events_helpers_for_parachain!(AssetHubRococo);
 // PenpalWestendA implementation
 impl_assert_events_helpers_for_parachain!(PenpalWestendA);
 
+// BridgeHubWestend implementation
+impl_accounts_helpers_for_parachain!(BridgeHubWestend);
+impl_assert_events_helpers_for_parachain!(BridgeHubWestend);
+
 // BridgeHubRococo implementation
 impl_accounts_helpers_for_parachain!(BridgeHubRococo);
 impl_assert_events_helpers_for_parachain!(BridgeHubRococo);
@@ -343,6 +365,7 @@ decl_test_sender_receiver_accounts_parameter_types! {
 	// Bridged Hubs
 	BridgeHubRococo { sender: ALICE, receiver: BOB },
 	BridgeHubWococo { sender: ALICE, receiver: BOB },
+	BridgeHubWestend { sender: ALICE, receiver: BOB },
 	// Penpals
 	PenpalWestendA { sender: ALICE, receiver: BOB },
 	PenpalRococoA { sender: ALICE, receiver: BOB },