updated frontend workflow

.github/workflows/frontend.yaml

@@ -12,7 +12,27 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: 20
+
+      - name: Install dependencies
+        run: yarn install
+
+      - name: Run tests
+        run: |
+          cd frontend
+          yarn test
+        
   build:
+    needs: test
     runs-on: ubuntu-latest
     steps:
       - name: Checkout