fix bridge test

cumulus/parachains/integration-tests/emulated/tests/bridges/bridge-hub-westend/src/tests/asset_transfers.rs

@@ -570,6 +570,9 @@ fn do_send_pens_and_wnds_from_penpal_westend_via_ahw_to_asset_hub_rococo(
 	AssetHubWestend::force_xcm_version(destination.clone(), XCM_VERSION);
 	BridgeHubWestend::force_xcm_version(bridge_hub_rococo_location(), XCM_VERSION);
 
+	// open bridge
+	open_bridge_between_asset_hub_rococo_and_asset_hub_westend();
+
 	// send message over bridge
 	assert_ok!(PenpalB::execute_with(|| {
 		let signed_origin = <PenpalB as Chain>::RuntimeOrigin::signed(PenpalBSender::get());
@@ -586,17 +589,18 @@ fn do_send_pens_and_wnds_from_penpal_westend_via_ahw_to_asset_hub_rococo(
 		// XCM to be executed at (intermediary) Westend Asset Hub
 		let context = PenpalUniversalLocation::get();
 		let reanchored_dest = destination.clone().reanchored(&local_asset_hub, &context).unwrap();
-		// Pay up to half the WNDs in fees on AHW
-		let mut reanchored_wnds = wnds.clone().reanchored(&local_asset_hub, &context).unwrap();
-		reanchored_wnds.fun = Fungible(wnds_amount / 2);
+		let reanchored_pens = pens.clone().reanchored(&local_asset_hub, &context).unwrap();
+		let mut onward_wnds = wnds.clone().reanchored(&local_asset_hub, &context).unwrap();
+		// reserve 100_000_000_000 WNDs in fees on AHW
+		// (exec fees: 3_593_000_000, transpo fees: 69_021_561_290 = 72_614_561_290)
+		// TODO: make this exact once we have PayFees + bridge dry-running
+		onward_wnds.fun = Fungible(wnds_amount - 100_000_000_000);
 		let xcm_on_ahw = Xcm(vec![
 			// both WNDs and PENs are local-reserve transferred to Rococo Asset Hub
 			InitiateTransfer {
 				destination: reanchored_dest,
-				// use up to half the WNDs for fees
-				remote_fees: Some(AssetTransferFilter::ReserveDeposit(reanchored_wnds.into())),
-				// transfer everything else (including unspent WNDs) further
-				assets: vec![AssetTransferFilter::ReserveDeposit(AssetFilter::Wild(All))],
+				remote_fees: Some(AssetTransferFilter::ReserveDeposit(onward_wnds.into())),
+				assets: vec![AssetTransferFilter::ReserveDeposit(reanchored_pens.into())],
 				remote_xcm: xcm_on_dest,
 			},
 		]);