ES6 unittests with jest-cli

After 2 days fighting with babel and mocha , I couldnt figure out why none of my module exports worked.

Now I found jest-cli on a video on Egghead.io with Kent C. Dodds, which does the job of my unittest of ES6 classes.

1) install npm dependencies. Download package.json and run npm install

	{
	"name": "ject",
	"version": "1.0.0",
	"description": "",
	"main": "index.js",
	"scripts": {
	"test": "jest"
	},
	"author": "",
	"license": "ISC",
	"devDependencies": {
	"babel-preset-es2015": "^6.18.0",
	"jest-cli": "^17.0.3"
	},
	"dependencies": {
	"babel-jest": "^17.0.2"
	}
	}

view raw package.json hosted with ❤ by GitHub

2) save .babelrc with following content in the root of your project:

	{
	"presets": ["es2015"]
	}

view raw .babelrc hosted with ❤ by GitHub

3) save following content to your root as sum.js
   

	class Test {
	constructor(x, y) {
	this.x = x;
	this.y = y;
	}
	sum(a, b) {
	return a+b;
	}
	}
	export default Test;

view raw sum.js hosted with ❤ by GitHub

4) save following content to your root as sum.test.js

	/**
	* Created by pboethig on 07.12.16.
	*/
	import Test from './sum';
	test('1 + 2 = 3', ()=>
	{
	var inst = new Test(1,2);
	inst.sum(1,2)
	});

view raw sum.test.js hosted with ❤ by GitHub

5) run npm test

That`s all. Now you are able to test ES6 classes. Here are the souces on github: https://github.com/pboethig/unittest-es6-javascript