Testing Real-World Go Backends Isn't What Many People Think

I've reviewed enough Go backend test suites to notice a pattern. The services with the most unit tests are often the ones with the most production incidents. Not because unit tests cause incidents — because the teams writing unit tests and calling it a day weren't testing the things that actually broke. Production bugs in distributed Go backends don't usually look like "function computed wrong value." They look like: "The context deadline didn't propagate into the background goroutine, so under