||Would it be possible to have the testing module be preloaded with some sample tests? It's really annoying to have to sit there and copy the given test case from the problem statement into the tester, especially since as it is, creating complex data structures with the tester is somewhat cumbersome.
Also, I think it would be nice to have several input->correct output examples (I think I have seen several problems where there is only one). I think it is more valuable at that stage of the competition for coders to be able to answer, "Okay, my code is not working -- why not?" than to be able to think up test cases that break their code. This latter skill is stressed enough in the challenge phase. And the former... it can be highlighted if we have many test examples to throw at our code before we submit, rather than just one or two.