fix: set NODE_ENV to test for database setup and prevent server from starting in test environment

Author: DilshanX09

.github/workflows/build.yml

@@ -43,6 +43,7 @@ jobs:
       - name: Setup Database and run Tests
         env:
           DATABASE_URL: postgres://postgres:password@localhost:5432/rest-api-db
+          NODE_ENV: test
         run: |
           # Wait for postgres to be ready (prevents connection errors)
           until pg_isready -h localhost -p 5432; do

package.json

@@ -11,7 +11,7 @@
   },
   "scripts": {
     "start": "nodemon server.js",
-    "test": "jest --detectOpenHandles"
+    "test": "NODE_ENV=test jest --runInBand"
   },
   "keywords": [],
   "author": "@DilshanX09",

server.js

@@ -39,6 +39,8 @@ app.get('/health', (req, res) => {
     });
 });
 
-app.listen(PORT, () => console.log(`Server is running on port ${PORT}`));
+if (process.env.NODE_ENV !== 'test') {
+  app.listen(PORT, () => console.log(`Server is running on port ${PORT}`));
+}
 
 module.exports = app;