3 ms·

Does bending your design to make it easier to mock result in better designs?

• eyelidlessness 5y ago
  1. It can promote simpler and easier to understand interfaces, but doesn’t guarantee it. 2. That doesn’t mean they’re “right” or necessarily “better”. 3. It depends a lot on the complexity of the code under test. If it’s really simple code—and especially if the stuff you intend to mock performs well and doesn’t mutate—making it easier to mock is probably going the wrong direction. 4. For most (>50%) things, yes. 5. But also for most things (off the cuff guess: >75%), you might be better off not mocking anyway. 6. If you (like me) prefer unit tests, you’ll probably get even better results by isolating as much of your code as possible from anything you’d want to mock in the first place.