Standalone and test framework agnostic JavaScript test spies, stubs and mocks.

via npm (node package manager)

$ sudo npm install sinon

or install via git by cloning the repository and including sinon.js in your project, as you would any other third party library.

See the sinon project homepage

• No global pollution
• Easy to use
• Require minimal “integration”
• Easy to embed seamlessly with any testing framework
• Easily fake any interface
• Ship with ready-to-use fakes for XMLHttpRequest, timers and more

Check out todo.org in the project repository

I've added a rudimentary setup for running the tests on Rhino with env.js (as this is a fairly common test setup, Sinon should support it). The files are located in test/rhino, but there are currently quite a few test failures. I believe these are not all bugs - many are probably problems with the tests running in Rhino. Run tests from the project root (load paths depend on it):

$ java -jar js.jar -opt -1 test/rhino/run.js