Hi Sven:
Not sure if you got my email, so I'll re-post here:
For JS testing, I'd highly suggest the qUnit framework, found at
http://docs.jquery.com/QUnit . As the site implies, it's jQuery-
managed, yet framework-independent test suite that supports many
powerful functions. The documentation is fairly simple. For some coweb-
specific examples that may be a little more in-depth than you need,
some qUnit tests exist for a basic text editor we did at
https://github.com/opencoweb/cowebx/tree/master/cowebx-widgets/cowebx-widgets-dojo/src/main/webapp/BasicTextareaEditor/test
. We successfully use the qUnit framework to imitate multiple browser
environments, sessions, and users concurrently, and rip through tests
accordingly.
Don't hesitate to ask for any further help in testing using qUnit or
anything else with OCW.