Unit Tests Can Be a Source of Complexity

All the unit tests can also be a source of complexity. It is the most you need to change something and you realize you just broke a bunch of tests. I've had cases like that too, where it's like, does it feel like I'm testing the wrong thing? And anytime I have find myself in a situation where I need to run it in order to see what the output is, and then that's what I want to do.