> As soon as they cease being lightweight (and the norm seems to be more effort spent creating mocks/stubs than the actual tests) then they fail even in that p

> As soon as they cease being lightweight (and the norm seems to be more effort spent creating mocks/stubs than the actual tests) then they fail even in that purpose and just become another impediment to useful work. Agreed. I think that in many cases it is a signal that your code is too complex, and may be violating the Single-Responsiblity principle.