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Automated (and Guided!) Accessibility Audits with axe Pro

3.10.2019
It's important to know there are tools for automated accessibility testing of websites. They are a vital part in helping make sure your website is usable for everyone, which is both a noble goal and damn good for business. Automated tests won't catch every potential accessibility issue, but they...

Automatically compress images on Pull Requests

19.9.2019
Sarah introduced us to GitHub Actions right after it dropped about a year ago. Now they have improved the feature and are touting its CI/CD abilities. Run tests, do deployment, do whatever stuff computers do! It's essentially a YAML file that says run this, then this, then this, etc., with...

Ripple Price Tests Support Above $0.2580, Can Reclaim $0.26

9.9.2019
Ripple is trying to remain above $0.26, recently dropped below $0.2590 XRP tested support level above $0.2580 twice over the last 24-hours Bulls are pushing harder to deal with the slowdown; remains under selling pressure XRP may face hurdles at trendline resistance level if a substantial rebound...

Model-Based Testing in React with State Machines

4.9.2019
Testing applications is crucially important to ensuring that the code is error-free and the logic requirements are met. However, writing tests manually is tedious and prone to human bias and error. Furthermore, maintenance can be a nightmare, especially when features are added or business logic...

Lessons Learned from a Year of Testing the Web Platform

30.7.2019
Mike Pennisi: The web-platform-tests project is a massive suite of tests (over one million in total) which verify that software (mostly web browsers) correctly implement web technologies. It’s as important as it is ambitious: the health of the web depends on a plurality of interoperable...

Types or Tests: Why Not Both?

10.7.2019
Every now and then, a debate flares up about the value of typed JavaScript. "Just write more tests!" yell some opponents. "Replace unit tests with types!" scream others. Both are right in some ways, and wrong in others. Twitter affords little room for nuance. But in the space of this article we...

Using Cypress to Write Tests for a React Application

12.6.2019
End-to-end tests are written to assert the flow of an application from start to finish. Instead of handling the tests yourself — you know, manually clicking all over the application — you can write a test that runs as you build the application. That’s what we call continuous integration and it’s...

Getting Started with React Testing Library

22.5.2019
I can guess what you are thinking: another React testing library? So many have already been covered here on CSS-Tricks (heck, I’ve already posted one covering Jest and Enzyme) so aren’t there already enough options to go around? But react-testing-library is not just another testing library. It’s...

Awesome Visual Testing with Percy! (Sponsored)

3.5.2019
The more complex the applications I work on, the more I rely on and invest in testing. Whether it’s flow typing, jest tests, unit tests, or selenium tests, I rely on all of them to enforce integrity and save me from myself. One type of testing that’s incredibly important but often...

Creating Reusable Base Classes in TypeScript with a Real-Life Example

18.4.2019
Hey CSS-Tricksters! Bryan Hughes was kind enough to take a concept from an existing post he published on converting to TypeScript and take it a few couple steps further in this post to elaborate on creating reusable base classes. While this post doesn’t require reading the other one, it’s certainly...

Writing Tests for React Applications Using Jest and Enzyme

1.3.2019
While it is important to have a well-tested API, solid test coverage is a must for any React application. Tests increase confidence in the code and helps prevent shipping bugs to users. That’s why we’re going to focus on testing in this post, specifically for React applications. By the end, you’ll...

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