[tests] add more e2e tests, make emulated setup closer to ecosystem reality (#428)

In the real world, not all assets are sufficient. This aligns our
emulated networks to that reality. Only DOT/KSM and USDT are sufficient
"by default" in tests.

Also added more e2e tests.

- [x] Does not require a CHANGELOG entry

---------

Co-authored-by: fellowship-merge-bot[bot] <151052383+fellowship-merge-bot[bot]@users.noreply.github.com>

Author: acatangiu

integration-tests/emulated/chains/parachains/assets/asset-hub-kusama/src/genesis.rs

@@ -28,6 +28,7 @@ use xcm::prelude::*;
 
 pub const PARA_ID: u32 = 1000;
 pub const ED: Balance = asset_hub_kusama_runtime::ExistentialDeposit::get();
+pub const USDT_ID: u32 = 1984;
 
 frame_support::parameter_types! {
 	pub AssetHubKusamaAssetOwner: AccountId = get_account_id_from_seed::<sr25519::Public>("Alice");
@@ -77,7 +78,10 @@ pub fn genesis() -> Storage {
 			..Default::default()
 		},
 		assets: asset_hub_kusama_runtime::AssetsConfig {
-			assets: vec![(RESERVABLE_ASSET_ID, AssetHubKusamaAssetOwner::get(), true, ED)],
+			assets: vec![
+				(RESERVABLE_ASSET_ID, AssetHubKusamaAssetOwner::get(), false, ED),
+				(USDT_ID, AssetHubKusamaAssetOwner::get(), true, ED),
+			],
 			..Default::default()
 		},
 		foreign_assets: asset_hub_kusama_runtime::ForeignAssetsConfig {
@@ -86,7 +90,7 @@ pub fn genesis() -> Storage {
 				(
 					PenpalATeleportableAssetLocation::get().try_into().unwrap(),
 					PenpalASiblingSovereignAccount::get(),
-					true,
+					false,
 					ED,
 				),
 			],

integration-tests/emulated/chains/parachains/assets/asset-hub-polkadot/src/genesis.rs

@@ -29,6 +29,7 @@ use xcm::prelude::*;
 
 pub const PARA_ID: u32 = 1000;
 pub const ED: Balance = asset_hub_polkadot_runtime::ExistentialDeposit::get();
+pub const USDT_ID: u32 = 1984;
 
 frame_support::parameter_types! {
 	pub AssetHubPolkadotAssetOwner: AccountId = get_account_id_from_seed::<sr25519::Public>("Alice");
@@ -103,7 +104,10 @@ pub fn genesis() -> Storage {
 			..Default::default()
 		},
 		assets: asset_hub_polkadot_runtime::AssetsConfig {
-			assets: vec![(RESERVABLE_ASSET_ID, AssetHubPolkadotAssetOwner::get(), true, ED)],
+			assets: vec![
+				(RESERVABLE_ASSET_ID, AssetHubPolkadotAssetOwner::get(), false, ED),
+				(USDT_ID, AssetHubPolkadotAssetOwner::get(), true, ED),
+			],
 			..Default::default()
 		},
 		foreign_assets: asset_hub_polkadot_runtime::ForeignAssetsConfig {
@@ -112,13 +116,13 @@ pub fn genesis() -> Storage {
 				(
 					PenpalATeleportableAssetLocation::get().try_into().unwrap(),
 					PenpalASiblingSovereignAccount::get(),
-					true,
+					false,
 					ED,
 				),
 				(
 					PenpalBTeleportableAssetLocation::get().try_into().unwrap(),
 					PenpalBSiblingSovereignAccount::get(),
-					true,
+					false,
 					ED,
 				),
 			],

integration-tests/emulated/tests/assets/asset-hub-kusama/src/lib.rs

@@ -18,10 +18,12 @@ pub use codec::Encode;
 // Substrate
 pub use frame_support::{
 	assert_err, assert_ok,
+	dispatch::RawOrigin,
 	pallet_prelude::Weight,
 	sp_runtime::{AccountId32, DispatchError, DispatchResult},
 	traits::fungibles::Inspect,
 };
+pub use sp_runtime::traits::Dispatchable;
 
 // Polkadot
 pub use xcm::{
@@ -41,6 +43,9 @@ pub use emulated_integration_tests_common::{
 	xcm_helpers::{xcm_transact_paid_execution, xcm_transact_unpaid_execution},
 	PROOF_SIZE_THRESHOLD, REF_TIME_THRESHOLD, RESERVABLE_ASSET_ID, XCM_V3,
 };
+pub use integration_tests_helpers::{
+	test_parachain_is_trusted_teleporter_for_relay, test_relay_is_trusted_teleporter,
+};
 pub use kusama_runtime::xcm_config::UniversalLocation as KusamaUniversalLocation;
 pub use kusama_system_emulated_network::{
 	asset_hub_kusama_emulated_chain::{
@@ -67,8 +72,8 @@ pub const ASSET_MIN_BALANCE: u128 = 1000;
 // `Assets` pallet index
 pub const ASSETS_PALLET_ID: u8 = 50;
 
-pub type RelayToSystemParaTest = Test<Kusama, AssetHubKusama>;
 pub type RelayToParaTest = Test<Kusama, PenpalA>;
+pub type ParaToRelayTest = Test<PenpalA, Kusama>;
 pub type SystemParaToRelayTest = Test<AssetHubKusama, Kusama>;
 pub type SystemParaToParaTest = Test<AssetHubKusama, PenpalA>;
 pub type ParaToSystemParaTest = Test<PenpalA, AssetHubKusama>;