The most minimal JavaScript unit test solution I could come up with. It's written using Spidermonkey, and may depend on it for the print() function. It's for stand-alone JavaScript, not for browser testing.
Consisting of all of ~25 lines of code, it's almost embarrassing to publish this a project of its own. But then, it works for me, and smaller is better as long as it works. It's also a testament to how expressive JavaScript's literal object notation is.
It has tests with names, grouped into functions according to your liking, and a simple console output. It does not know the reason of test failures and does not allow nesting tests. I suspect these things tempt one to write tests that are too difficult, anyway. Just test one concern per test function.
Run the tests in example.js with $ js -f js_minimal_test.js example.js.
I have the idea of making several versions that get successively bigger and introduce more features, to get a feel for the behind-the-scenes of testing, and to find the sweet spot(s) for something that is expressive enough, but small enough to be a no-brainer to use in a new project. At least the smallest one should be.
It also serves as a learning JavaScript project for me. I (try to) strongly follow Douglas Crockford's JavaScript: The Good Parts.