Fastcheck: Property based testing for JavaScript and TypeScript

• fast-check

  21 4,099 9.8 TypeScript

  Property based testing framework for JavaScript (like QuickCheck) written in TypeScript

The about says:

Property based testing framework for JavaScript (like QuickCheck) written in TypeScript

source: https://github.com/dubzzz/fast-check

• hypothesis

  20 7,275 9.9 Python

  Hypothesis is a powerful, flexible, and easy to use library for property-based testing.

  

For those looking for property based testing for Python: https://hypothesis.works

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• checkers

  1 21 0.0 JavaScript

  Property-based testing for JavaScript via ClojureScript's test.check (by glenjamin)

The clojure/clojurescript tooling for QuickCheck is quite powerful - as it has a wide range of generators which are able to generate smarter / more specific data than simply matching on types.

And since clojurescript can be compiled and exported to JavaScript, this makes it available to JavaScript projects. A few years ago I packaged this up as https://github.com/glenjamin/checkers. I expect there are newer versions of the underlying library available now, but as I haven't been working in this ecosystem for a while, I haven't kept the package up to date.

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