JavaScript for Line of Business Applications

AngularJS provides support for testing directives.  Testing directives that use inline templates -- html that is embedded within the directive's code -- is a straightforward process.  What isn't straightforward is testing a directive that uses an external html template.

This guide shows how to write javascript tests with a minimal test api that works in both node and browsers.

This guide covers the ins-and-outs of tape, a simple TAP-producing test library for node and browsers. The tape API is a small superset of the node core assert module.

This guide was written for Testling. Testling lets you write continuous integration cross-browser tests that run on every git push! Once the tests run you get a badge you can put in your readme with the current browser test status. Here's how it looks:

I recently started using QUnit for unit testing JS code and I’m really impressed with it. I’m sure Jasmine framework is equally good, but I picked up QUnit because none of the languages/frameworks I have learned so far have the letter ‘Q’ in them!!

So I have a simple page which is used to add two numbers and show the sum as a text.

By now, everyone knows about Test-Driven Development and unit testing. But are you using the testing frameworks to their fullest?

In this tutorial, I’ll introduce you to some of the more advanced techniques available to you.

As this tutorial will cover some advanced topics, I assume you’ve already created unit tests before and are familiar with the basics and its terminology. If not, here’s an excellent article to you get started: TDD Terminology Simplified.

We’ll be using SinonJS. This is a standalone framework which provides an API for mocks, stubs, spies and more. You can use it with any testing framework of your choosing, but for this tutorial, we’ll be using BusterJS, as it ships with SinonJS built-in.

I’m giving a presentation on KnockoutJS and TDD at DevTeach in Toronto on Wednesday. I’ll be doing a live code demo, which is always exciting (at least for the presenter). I thought I’d write a quick article recording the steps I go through as part of the demo.

With a proper suite of unit tests in place, it’s much safer to make changes. It took me way too long to realize this, but the easiest way to make sure you have a great suite of unit tests is to practice some form of Test Driven Development (TDD) or Behavior Driven Development (BDD). Since you write the tests first in these practices, you never have to go back and try to shoe horn your code in to a test harness. Also, if you wrote the tests before the code, you wrote the tests already, so there’s no risk you’re going to skip them when the schedule gets tight.

Seamless javascript code coverage. Easy to install, easy to configure, easy to use on client side and node.js. Blanket.js is an open source project created by Migrii Team.

As I was learning how to design and execute load tests, an experienced load tester told me the one rule you needed to be able to judge the effectiveness of a test execution: If something didn’t go wrong with some part of the application and/or infrastructure during the test, there was likely something wrong with the test you ran.

Ember-testing is a recent addition to the Ember.js framework that allows you to create integration tests for your app using a custom DSL for interacting with your async Ember.js app. We’re going to walk through how to write integration tests with ember-testing using the qunit-rails gem.

I have been experimenting more with JavaScript frameworks lately. Being fond of the Test Driven Development methodology, I came across Jasmine. Here is how the site defines it: Jasmine is a behavior-driven development framework for testing JavaScript code. It does not depend on any other JavaScript frameworks. It does not require a DOM. And it has a clean, obvious syntax so that you can easily write tests.

Venus.js in an open source software testing tool developed by LinkedIn that allows you to organize and run your entire JS testing system with a single tool using Node.js. Venus eliminates repetitive tasks and friction points and lets you focus on writing tests instead of running them.

In our last post, we created a ViewModel which models the basic functionality we would like on the page. As a reminder, we have a Knockout “observable array” of items suitable for binding; each item is a JavaScript object containing a title and description in addition to a value called complete which indicates if this item has been completed. Our ViewModel function object accepts a parameter of any initial items we may need to load in to to our list from the server. We have a method called add_item which can add new items to our list, and we have a test suite that ensures that all of this is working. So far, all of this is inside a single file calledToDontListSpec.js.

The latest Razor View Model of ASP.Net MVC 3/MVC 4 uses considerable amount of JavaScript/JQuery. Sometimes the ActionResult returned by the Controller methods are refined further using JQuery methods before the result in the view. It’s very common when we are returning JSON formatted output from the controller method.

We have various options to run the unit test on the .Net code written within controller. But sometimes it’s required to test those JavaScript/JQuery codes as well, to check the sanity of the output especially in the situation mentioned above.

QUnit (http://nuget.org/packages/QUnit-MVC, a NuGet package) can help us to run such Unit Test.

Now with javascript we are back to the old techniques. There have been very few changes in software architecture and patterns in the last 20 years. We could have been writing web applications in the browser the way we do today, more than 10 years ago, if the big companies had agreed on standards and all that. It's always about people, not about software

Anyway, for those friends of mine that are already practicing TDD but haven't really used events, it is not clear how to test drive a collaboration between objects, using events.
Let's see the simplest way to publish and subscribe to an event using javascript: