Vincent/fix smoketests (paritytech#866)

smoketest/README.md

@@ -9,7 +9,9 @@ This is necessary to cover rewards for "execution message" relayers. Messages wi
 
 # Bindings
 
-Generate bindings:
+First make sure the E2E Stack is running.
+
+Then run this command:
 
 ```shell
 ./make-bindings.sh

smoketest/make-bindings.sh

@@ -4,5 +4,18 @@ set -eu
 
 mkdir -p src/contracts
 
-subxt codegen --url http://localhost:11144 | rustfmt --edition 2021 --emit=stdout > src/parachains/bridgehub.rs
+subxt_version=v0.27.1
+cargo_dir=".cargo"
+export PATH=$PATH:$cargo_dir/bin
+
+# Install Subxt
+command -v subxt || cargo install subxt-cli \
+    --git https://github.com/paritytech/subxt.git \
+    --tag $subxt_version \
+    --root $cargo_dir
+
+# Fetch metadata from BridgeHUb and generate client
+subxt codegen --url ws://localhost:11144 | rustfmt --edition 2021 --emit=stdout > src/parachains/bridgehub.rs
+
+# Generate Rust bindings for contracts
 forge bind --module --overwrite --bindings-path src/contracts --root ../core/packages/contracts

smoketest/tests/lock_tokens.rs

@@ -1,5 +1,4 @@
 use snowbridge_smoketest::contracts::{native_tokens, weth9};
-
 use std::{sync::Arc, time::Duration};
 
 use ethers::{
@@ -18,9 +17,9 @@ use xcm::v3::MultiLocation;
 // contracts are deployed in DeployScript.sol.
 const ETHEREUM_API: &str = "http://localhost:8545";
 const ETHEREUM_KEY: &str = "0x5e002a1af63fd31f1c25258f3082dc889762664cb8f218d86da85dff8b07b342";
-const NATIVE_TOKENS_CONTRACT: &str = "0xB8EA8cB425d85536b158d661da1ef0895Bb92F1D";
-const TOKEN_VAULT_CONTRACT: &str = "0xB1185EDE04202fE62D38F5db72F71e38Ff3E8305";
-const WETH_CONTRACT: &str = "0x3f0839385DB9cBEa8E73AdA6fa0CFe07E321F61d";
+const NATIVE_TOKENS_CONTRACT: &str = "0x8cF6147918A5CBb672703F879f385036f8793a24";
+const TOKEN_VAULT_CONTRACT: &str = "0xB8EA8cB425d85536b158d661da1ef0895Bb92F1D";
+const WETH_CONTRACT: &str = "0x440eDFFA1352B13227e8eE646f3Ea37456deC701";
 
 #[tokio::test]
 async fn test_lock_tokens() {