bunch of tests and anvil

Author: gawnieg

.github/workflows/CI.yml

@@ -14,6 +14,11 @@ jobs:
       - name: Checkout repo
         uses: actions/checkout@v4
 
+      - name: Install Foundry
+        uses: foundry-rs/foundry-toolchain@v1
+        with:
+          version: nightly
+
       - name: Install pnpm
         uses: pnpm/action-setup@v4
         with:

package.json

@@ -13,10 +13,13 @@
   "packageManager": "pnpm@10.7.1",
   "devDependencies": {
     "@types/node": "^24.3.0",
+    "@types/ws": "^8.18.1",
     "supertest": "^7.1.4",
     "ts-node": "^10.9.2",
     "typescript": "^5.9.2",
-    "vitest": "^3.2.4"
+    "viem": "^2.34.0",
+    "vitest": "^3.2.4",
+    "ws": "^8.18.3"
   },
   "dependencies": {
     "@hono/node-server": "^1.19.0",

pnpm-lock.yaml

@@ -37,7 +37,7 @@ console.log(`Proxy running at http://localhost:8546`);
 ```
 
 ### Control Behaviour
-```ts
+```tsthe 
 // Deterministic mode: drop the next eth_sendRawTransaction call
 proxy.addBehavior(ProxyBehavior.NotAnswer);