Heheh company with 14 million LoC barely had tests :)
I don’t know what kind of companies you worked on, but let me tell you that the code that runs the world comes from an era before tests, and some of it is too complicated to even be tested.
Test it in production is the only way for a lot of it. Then you need observability and easy ways of rolling back. That’s about it. Regardless of the language.
Read the latest google book — code architects at google I think it’s called ? Has a couple of great chapters on testing at scale and how unittests are useless
I don’t know what kind of companies you worked on, but let me tell you that the code that runs the world comes from an era before tests, and some of it is too complicated to even be tested.
Test it in production is the only way for a lot of it. Then you need observability and easy ways of rolling back. That’s about it. Regardless of the language.
Read the latest google book — code architects at google I think it’s called ? Has a couple of great chapters on testing at scale and how unittests are useless