Wouldn't the integration (or global consistency as you call it) of objects be exactly what was worth testing in that's the hard part? Generally objects are sim

Wouldn't the integration (or global consistency as you call it) of objects be exactly what was worth testing in that's the hard part? Generally objects are simple enough that I can reason about them in my head. That's the whole point of encapsulating the state after all. That means tests are really less critical, since a thorough inspection should do. Between components it's MUCH harder to get any sort of coverage in your internal model, so tests that can be repeated become more useful. I want the tests to fail if the software doesn't work. Not if some object doesn't do what it says it will in a way that doesn't matter to the system. The hard part is exactly what I want tests to cover.