@kripken ava turned out to be a good match for the existing tests... I tried not to touch the test logic itself, but just port everything to the new runner.

One thing that I noticed was that there are some large numbers in the stress test output. I'm not sure how long it has behaved like this, or if it is even a problem. But I figured that I would mention it in case its a bug?

0 : 0.00,-56.00,0.00
1 : -4410.87,-30117726.00,251.04
2 : 6.51,-5.00,1.59
3 : 8.92,-5.61,2.37
4 : 3.95,-5.00,0.47
5 : -10667.17,-30883686.00,-4871.24
6 : 1.88,-5.61,-3.02
total time: 5.420

Not sure if those numbers are a bug, offhand... been a long time since I read that code. IIRC it just does a simple operation but a great many times. So maybe an object really does move quite a long way on one axis.