I’m surprised that tests are only mentioned as a way to squash bugs and not as a way to make refactoring faster. Just today I converted a large library into a s

I’m surprised that tests are only mentioned as a way to squash bugs and not as a way to make refactoring faster. Just today I converted a large library into a service and brought in some endpoints from another service. The diff is several thousand lines. But I’m not too worried about bugs because we have decent test coverage. I’m not sure why, but I really like working with legacy code (as long as I’m given some autonomy to improve it over time). Part of the enjoyment is the restraint, the humility when facing code that, despite not being squeaky clean, has racked up millions or billions of hours getting shit done. The code knows itself better than you do.