Yes, of course, we've thought about it. Equally importantly, we have a "satisfies" keyword for stating checks about properties. (See the example on the Pyret ho

Yes, of course, we've thought about it. Equally importantly, we have a "satisfies" keyword for stating checks about properties. (See the example on the Pyret home page.) We use test oracles extensively in teaching; see these two assignments: http://cs.brown.edu/courses/cs019/2012/assignments/sortacle http://cs.brown.edu/courses/cs019/2012/assignments/sortacle , http://cs.brown.edu/courses/cs019/2012/assignments/oracle http://cs.brown.edu/courses/cs019/2012/assignments/oracle .