I've attached a copy of the script.aculo.us SVN repository (pretty small). The tests are in the /test.
Created attachment 8556 [details] script.aculo.us SVN repo (r4367)
Test262 have good coverage of JavaScript tests and WPT also has coverage for a lot of tests. I am going to mark this as "RESOLVED CONFIGURATION CHANGED". Please reopen, if you think there is something we should take from these test cases.