Add simple test with Mocha

index.js

@@ -67,7 +67,7 @@ DB.getDB.then((DB) => {
     app.get('/', sessionChecker, async (req, res) => {
         try {
             const userInfo = req.userInfo;
-            if(!userInfo) {
+            if (!userInfo) {
                 // This should not happend, since the sessionChecker should redirect to login
                 return res.status(401).json({ status: "Unauthorized" });
             }
@@ -146,7 +146,7 @@ DB.getDB.then((DB) => {
     app.post('/token/', sessionChecker, async (req, res) => {
         try {
             const profileid = getProfileId(req);
-            const { token } = req.body; 
+            const { token } = req.body;
             // Validate token presence
             if (!token) {
                 return res.status(400).json({ status: 'Token is required' });
@@ -186,3 +186,5 @@ DB.getDB.then((DB) => {
     throw err;
 });
 
+// Export the app for testing purposes
+module.exports = { app, mongoDB: DB };