Idea: Conformance Tests and Test Vectors

I wish Cap'n Web had a set of conformance tests to help implementing the protocol in other languages. It could include various test vectors mapping exact client message to the expected server responses and vice-versa.

Have you thought about this? Do you have any specific edge cases in mind that would be worth testing? Maybe things like disposing, distinguishing property access vs. method calls vs. getters, and so on?