Originally written on samueleresca.net
Wallaby.js is insanely fast, because it only executes tests affected by your code changes and runs your tests in parallel.
Wallaby.js is not free, but it is less expensive than some similar commercial solutions for other languages.
The power of wallaby.js
The power of Wallaby.js is the integration between tests and code editor: it reports code coverage and test results and error while you’re writing code. Wallaby.js supports a lot of technologies, you can find a lot of samples and templates on github account.
Wallaby.js supports continuous testing in most common code editor: Sublime text, Atom, Visual studio code, Visual Studio 2013/15 and WebStorm.
It supports browser code testing (via PhantomJS or node.js) and node.js testing, it also supports many testing frameworks, for example: Jasmine, Mocha, QUnit. Finally, tests can also be written using TypeScript or CoffeeScript.
Installation and Configuration
Wallaby.js can be installed as an extension of your code editor: for example, in VS Code you can simply install using extension manager:
Here’s the complete list of configuration options.
In my opinion..
I have tried Wallaby.js on two IDE: Visual studio 2013 and WebStorm 11. It has improved my TDD workflow, I think it’s very useful because it can jump to failing test, error sources, show error details inline. It has also been easy to import my testing code written on Mocha and Chai.