
jsverify.github.io
JSVerify — property based testing for JavaScript. Like QuickCheck.Write powerful and concise tests. JSVerify is a property-based testing library, highly inspired by QuickCheck. It is testing framework agnostic, you could use JSVerify with Mocha. Or any other framework. Write properties about your function that should hold true for all inputs, instead of enumerating expected inputs and outputs. Tests written this way are concise and powerful. Install the module from npm registry. Clone the source from GitHub. Boolean to Boolean function applied thrice. Bool → bool.
http://jsverify.github.io/