Added a basic test and a workflow

.github/workflows/test.yml

@@ -0,0 +1,25 @@
+name: Run Tests
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: 20
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run tests
+        run: npm test

app.js

@@ -11,6 +11,8 @@ app.use(express.static(__dirname + '/app/public')); // Public folder containing
 
 require('./app/routes')(app); // Routes are imported
 
-http.createServer(app).listen(app.get('port'), function(){
+const server = http.createServer(app).listen(app.get('port'), function(){
 	console.log('The application is running on port ' + app.get('port'));
 }); // Http server is created
+
+module.exports = server;