Tests can be messed up just like anything else can be messed up. Doesn’t mean that the concept itself is flawed.
If you only do things that people cannot mess up, then you’ll quickly end up not doing anything at all.
The biggest benefit to me that testing has is when refactoring. If I have decent test coverage and I change something major, tests help me to see if I accidentally broke something on the way, which is especially helpful if I am touching ancient code written by someone who left the company years ago.
Tests can be messed up just like anything else can be messed up. Doesn’t mean that the concept itself is flawed.
If you only do things that people cannot mess up, then you’ll quickly end up not doing anything at all.
The biggest benefit to me that testing has is when refactoring. If I have decent test coverage and I change something major, tests help me to see if I accidentally broke something on the way, which is especially helpful if I am touching ancient code written by someone who left the company years ago.