test(tests): adapted it after refactoring the core file

Author: pharindoko

tests/test.js

@@ -1,5 +1,9 @@
 const request = require('supertest');
-const app = require('../dist/utils.js');
+const app = require('../dist/core');
+
+(async () => {
+  await app.init();
+})();
 
 describe('Test the root path', () => {
   test('It should response the GET method', async () => {