jest test basic setup

backend/jest.config.ts

@@ -5,5 +5,5 @@ export default {
   modulePaths: ['<rootDir>/src'],
   testMatch: ['<rootDir>/tests/**/*.test.ts'],
   setupFiles: ['<rootDir>/test-resources/env-vars.js'],
-  setupFilesAfterEnv: ['<rootDir>/setupTests.ts']
+  setupFilesAfterEnv: ['<rootDir>/tests/setupTests.ts']
 };

backend/setupTests.ts

@@ -1,11 +0,0 @@
-import { beforeAll, afterAll } from '@jest/globals';
-import { DatabaseService } from './src/services';
-
-beforeAll(async () => {
-  const mongoURL = process.env.MONGO_URL!;
-  await DatabaseService.initDatabase(mongoURL);
-});
-
-afterAll(async () => {
-  await DatabaseService.closeDatabase();
-});