The linked article does not speak of tests, it speaks of a team that failed to properly review an LLM refactor then proceeds to blame the tooling.

LLMs are good at writing tests in my experience.

This is a massive change for cache in webapp templates as it makes their rendering more stable and thus more cacheable.

A key component here is that we are trusting the user's browser to not be tampered with, as it is the browser that sets the Sec-Fetch-Site header and guarantees it has not been tampered with.

I wonder if that's a new thing ? Do we already rely on browsers being correct in their implementation for something equally fundamental ?