fix/ spectron e2e test

e2e/common-setup.ts

@@ -3,34 +3,22 @@ const ELECTRON_PATH = require('electron'); // Require Electron from the binaries
 const PATH = require('path');
 
 export default function setup(): void {
-  beforeEach(async () => {
+  beforeEach(async function() {
     this.app = new APPLICATION({
       // Your electron path can be any binary
       // i.e for OSX an example path could be '/Applications/MyApp.app/Contents/MacOS/MyApp'
       // But for the sake of the example we fetch it from our node_modules.
       path: ELECTRON_PATH,
-
-      // Assuming you have the following directory structure
-
-      //  |__ my project
-      //     |__ ...
-      //     |__ main.js
-      //     |__ package.json
-      //     |__ index.html
-      //     |__ ...
-      //     |__ test
-      //        |__ spec.js  <- You are here! ~ Well you should be.
-
       // The following line tells spectron to look and use the main.js file
-      // and the package.json located 1 level above.
-      args: [PATH.join(__dirname, '..')],
+      // and the package.json located in app folder.
+      args: [PATH.join(__dirname, '../app/main.js'), PATH.join(__dirname, '../app/package.json')],
       webdriverOptions: {}
     });
 
     await this.app.start();
   });
 
-  afterEach(async () => {
+  afterEach(async function() {
     if (this.app && this.app.isRunning()) {
       await this.app.stop();
     }