Creating a Hello World website with Node.js We’ll start with creating a simple application, just like we usually do. The subsequent part of this article will explain how to write, run, and automate tests with BuddyWorks. Node.js Install Node.js If that’s the first time you work with Node.js, install the npm manager first: nodejs.org/en/download/package-manager Install NPM and Mocha Create a directory for the application: mkdir myapp && cd myapp Now, npm should be initialized. We’ll use it in order to create a with the framework: package.json Mocha npm init You will be asked for the application’s details. Type the following: name: hello-world entry point: app.js test command: This framework will be used for testing the application ./node_modules/.bin/mocha Confirm the rest of the values by hitting enter. Create Hello World with Express framework Express Node.js web application framework will be used for building the app: npm install express --save Details of Hello World Once you already have everything installed, let’s create an file with a simple HTTP server that will serve our Hello World website: app.js //Load express module with `require` directivevar express = require('express')var app = express()

//Define request response in root URL (/)app.get('/', function (req, res) {  res.send('Hello World')})

//Launch listening server on port 8080app.listen(8080, function () {  console.log('App listening on port 8080!')}) Run the app Now, the application is ready to launch: $ node app.js Go to: in your browser to view it. http://localhost:8080/ Configuring unit tests with Mocha and Chai Each single application should be tested before the deployment to the server, especially, if it’s a welcome site that creates the first impression. Here, we will use Mocha as the test running framework, and Chai as the assertion library. Install Mocha and Chai Make sure to add Mocha and Chai packages to the : package.json npm install mocha --savenpm install chai --save Add a test file Now, it’s time for defining our first test… Like what you read? ! Check out the full guide here

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How to run Mocha/Chai unit tests on Node.js apps

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