[dylukes]

The fundamental idea of testing units and then integrations between units is unassailable and unkillable (today).

We should have serious discussions about HOW we test units, and whether example based tests are sufficient when we can do property based testing, etc...

...but the suggestion of the idea that the unit/integration distinction has somehow been surpassed is absolutely baffling. You would need to rewrite more than half the languages in use for this to make much sense and even then I don't think you could shake this core abstraction. It's built into the tools we use and may even be built into the way we think about systems far below any language or tool choice.