The MDN Web Docs Learning Area teaches fundamentals of modern web development, beginning with HTML, CSS, and JavaScript essentials. In feedback this year, readers asked for a more opinionated, structured ...
All the Star Wars data you've ever wanted: Planets, Spaceships, Vehicles, People, Films and Species from all SEVEN Star Wars films now with The Force Awakens data!
This guide is intended to catch you up with the state of JavaScript testing in 2019. It combines information from the best recent articles, and our own experience at Welldone Software Solutions.
Purely functional code makes some things easier to understand: because values don't change, you can call functions and know that only their return value matters—they don't change anything outside themselves. But this makes many real-world applications difficult: how do you write to a database, or to the screen? In this screencast we look at one method for crossing this divide.
With the growing popularity of JavaScript frameworks such as React, Angular, and Vue, testing your client-side code is becoming even more vital. When it comes to test frameworks, there are two major…
Welcome to Part 12 of this comprehensive review and summary of Cory House's Pluralsight course Building Applications with React and Redux in ES6. Cory is a Microsoft MVP in C#, founder of OutlierDeveloper.com, avid tech reader, and speaker. He believes in clean code, pragmatic development, and responsive native UIs. Also in this series: Part 1 -…
Components can be tested with snapshot testing. Tools like Jest (often combined with Enzyme) that offer this functionality take a ‘snapshot’ of what your component renders — everything from divs…
Whoever reads and understands this guide, can safely assume they know the big picture of the state of JavaScript testing in the web development community for 2018.
This is the story of how frontend engineers at Podio improved productivity, developer experience and reduced technical debt simply by ditching Karma and Jasmine in favour of Mocha and jsdom. Testing…
One of the biggest complaints I hear about TDD and unit tests is that people struggle with all of the mocking required to isolate units. Some people struggle to understand how their unit tests are…
Mocha is one of the most popular Node.js testing frameworks and while it may seem daunting, it’s actually pretty easy to get started with. This tutorial is all about Mocha basics. By the end of this…
This short guide is intended to catch you up with the most important reasoning, terms, tools, and approaches to JavaScript testing. It combines information from many great recently written articles…
Jani Hartikainen looks at testdouble.js (a new mocking library with a streamlined API) and puts it head-to-head with Sinon.js, the JS test double incumbent.
Sometimes popularity is an indication of quality. Other times, popular things are popular for popularity’s sake, and not because they’re better than alternatives. On real production projects, I have…
Test Automation is supposed to be what we all strive to work towards, right? Well, I think the key line in this tweet was “expert in testing”. Coding is not testing. It never has been and never will be.
Test Driven Development (TDD) is a process for writing software that provably satisfies the software requirements. The process works like this: When you dig into TDD you’re going to find a bunch of…
Most developers seem to agree that testing is good, but developers frequently disagree about how to test. In this article, I’ll break down some common misconceptions and hopefully teach you a few…
Selenium is an open source automation tool and definitely a great JavaScript automated testing framework which supports all operating systems and browsers such…
I googled test patterns in Go, then I invoked the Spirits of the Core Library. As soon as I realised where to look at, I finally saw a sign. It was Brad Fitzpatrick.