The test cases are kind of fun for the Processing.js stuff. I setup one for one of Andor’s functions… the subset( ). Took a bit to work out the bugs to get it to work, but its neat how the Processing.js stuff works anyhow.
Anyhow, here’s a link to the subset( ) tests. I’m not sure how everyone else was writing them, but I was writing it to challenge it to break, or deal with anomolous input. There are no exception events noted in the Processing website that defines the Java versions of these functions from their API pages.
I referenced the test page to Andor’s own Matrix account so that if he makes changes, then they’ll immediately reflect in the test case.
Enjoy!
Andrew Grimo's old college projects 
Processing.js is now in Android..Check it out: http://code.google.com/p/my-processing/
There is a FREE Ad-supported version in the market as well.