Fix XCM Weights on Westend (#4066)

* found issue

* fix up

* remove printlns

polkadot/runtime/westend/src/tests.rs

@@ -49,3 +49,21 @@ fn call_size() {
 		If the limit is too strong, maybe consider increase the limit to 300.",
 	);
 }
+
+#[test]
+fn sanity_check_teleport_assets_weight() {
+	// This test sanity checks that at least 50 teleports can exist in a block.
+	// Usually when XCM runs into an issue, it will return a weight of `Weight::MAX`,
+	// so this test will certainly ensure that this problem does not occur.
+	use frame_support::dispatch::GetDispatchInfo;
+	let weight = pallet_xcm::Call::<Runtime>::teleport_assets {
+		dest: Box::new(xcm::VersionedMultiLocation::V1(MultiLocation::here())),
+		beneficiary: Box::new(xcm::VersionedMultiLocation::V1(MultiLocation::here())),
+		assets: Box::new((Concrete(MultiLocation::here()), Fungible(200_000)).into()),
+		fee_asset_item: 0,
+	}
+	.get_dispatch_info()
+	.weight;
+
+	assert!(weight * 50 < BlockWeights::get().max_block);
+}