How to set up SimpleTest to work with CI

[eluser]drizz815[/eluser]
Hi

I've been trying to get SimpleTest to work with CI.
Have tried Don Pinkster's solution in http://ellislab.com/forums/viewthread/63602/ (thanks Don) and I think I'm nearly there except that I'm getting "Cannot instantiate non-existent class: testsuite".

Has anybody got any ideas?

I've used SimpleTest outside of CI and I'm quite keen to get it working with CI, but I'm new to CI and haven't quite got my head around why using SimpleTest with it is so difficult. I'm wondering what other people do for testing.