Which BDD framework for JavaScript do you use?

Question

I'm developing large application using ExtJS framework. Because it grows too fast, I realized that this might be the time to start doing tests.

I want to go for BDD technique, I found several BDD frameworks for JavaScript around (Screw.Unit, JSpec, JSSpec), but I'm still not sure which one to choose. There are some articles about this topic, but I'm more interested in your own experiences/suggestions.

So my questions are:

• Which one do you use and why?
• Any other hints/tips are welcome.
• Do you use Selenium alongside a BDD testing?
• Do you use any other technique?

Answer 1

We use Selenium, yes.

I wrote a Unit Test framework (well, most of one, functional, not entirely pluggable) that I have used a few times. These sorts of topics keep coming up so maybe I should finish it... the url is http://code.google.com/p/jasproject/