Add GHA tests

.github/workflows/test.yml

@@ -0,0 +1,38 @@
+name: Tests
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  test:
+    name: Test
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 30
+
+    strategy:
+      fail-fast: true
+      matrix:
+        os: ["ubuntu-latest"]
+        node-version: ["22"]
+
+    steps:
+      - name: Checkout project
+        uses: actions/checkout@v3
+
+      - name: Setup Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+          check-latest: true
+          cache: "npm"
+
+      - name: Setup Circom
+        run: wget https://github.com/iden3/circom/releases/latest/download/circom-linux-amd64 && sudo mv ./circom-linux-amd64 /usr/bin/circom && sudo chmod +x /usr/bin/circom
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run tests
+        run: npm test