Claire —at a glance—

Claire is a library for property-based testing for JavaScript applications. Just like Haskell’s QuickCheck or Scala’s ScalaCheck, Claire works by generating random values within a given data space and verifying if the properties declared for those values hold.

Guides

Getting Started A lightning introduction to Claire, so you can jump straight to testing. Discover Claire A thorough tour on Claire’s concepts for leeching all you can to test your code-bases better.

Extending Claire Explains Claire’s architecture, so you can extend Claire to support new types, combinators and test runners. API Reference A quick reference on Claire’s API, including plenty of usage examples and cross-references.

Platform Support

Claire runs on all ECMAScript 5-compliant platforms without problems. It’s been successfully tested in the following platforms:

• 7.0+
• 5.1
• 15.0+
• 10.0+
• 21.0+
• 0.6+

For legacy, ES3 platforms, like IE’s JScript, you’ll have to provide support for the following methods:

• Object.keys
• Object.create
• Object.getPrototypeOf
• Object.freeze (as an identity function)
• Array.prototype.indexOf
• Array.prototype.forEach
• Array.prototype.filter
• Array.prototype.map
• Array.prototype.reduce
• Array.prototype.some
• Array.prototype.every
• String.prototype.trim

The nice es5-shim library should take care of handling all of those for you.

Support

Claire uses the Github tracker for tracking bugs and new features.

Licence

MIT/X11.