move dotenv config from server index to the config file

backend/src/config/index.ts

@@ -1,3 +1,17 @@
+import dotenv from "dotenv";
+import fs from "fs";
+dotenv.config();
+if (process.env.NODE_ENV === "test"){
+    try{
+        const envConfig = dotenv.parse(fs.readFileSync('.test.env'));
+        for (const k of Object.keys(envConfig)) {
+            process.env[k] = envConfig[k];
+        }
+    }catch (e) {
+        //Use .env file values
+    }
+}
+
 const SERVER_PORT:number = parseInt(process.env.SERVER_PORT, 10) || 8080;
 
 const VALID_EXPORT_TYPES: {[key:string]: string} = {

backend/src/server.ts

@@ -1,11 +1,7 @@
 import express from "express";
-import dotenv from "dotenv";
 import * as bodyParser from 'body-parser';
-
 import * as routes from "./routes"
 
-dotenv.config();
-
 const app = express();
 app.use(bodyParser.json());