Add test job to CI

.github/workflows/node.js.yml

@@ -10,12 +10,26 @@ on:
     branches: [ "main" ]
 
 jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [20.x]
+    steps:
+    - uses: actions/checkout@v3
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v3
+      with:
+        node-version: ${{ matrix.node-version }}
+        cache: 'npm'
+    - run: yarn install --frozen-lockfile
+    - run: yarn build
+    - run: yarn test
   lint:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [18.x]
-        # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
+        node-version: [20.x]
     steps:
     - uses: actions/checkout@v3
     - name: Use Node.js ${{ matrix.node-version }}