Book Image

Learning Node.js for .NET Developers

By : Cummings
Book Image

Learning Node.js for .NET Developers

By: Cummings

Overview of this book

Node.js is an open source, cross-platform runtime environment that allows you to use JavaScript to develop server-side web applications. This short guide will help you develop applications using JavaScript and Node.js, leverage your existing programming skills from .NET or Java, and make the most of these other platforms through understanding the Node.js programming model. You will learn how to build web applications and APIs in Node, discover packages in the Node.js ecosystem, test and deploy your Node.js code, and more. Finally, you will discover how to integrate Node.js and .NET code.
Table of Contents (16 chapters)
15
Index

Testing Socket.IO applications


Now let's look at how we can test our chat module. To talk to it from our tests we'll need a Socket.IO client. The Socket.IO project provides another package for this:

> npm install socket.io-client --save-dev

The infrastructure for our tests consists of setting up a server and multiple clients as given here test/realtime/chat.js:

'use strict';
describe('chat', function() {
    const expect = require('chai').expect;
    let server, io, url, createUser, createdClients = [];
    
    beforeEach(done => {
        server = require('http').createServer();
        
        server.listen((err) => {
            if (err) {
                done(err);
            } else {
                const addr = server.address();
                url = 'http://localhost:' + addr.port + '/chat'; 

                io = require('socket.io')(server);
                require('../../src/realtime/chat.js')(io);
                
                done();
            }
        });
  ...