About a month ago I hit that point in a project where the business logic was solid, the API endpoints were clean, but the test file was a pathetic stub. I had 30+ similar validation functions – each one a slight variation on “does this field exist?”, “is it the right type?”, “does it pass this custom rule?”. The manual approach would mean copying the same assert pattern dozens of times, changing only the function name and the test input. My brain started melting just thinking about it.
I’m a big believer in testing, but I’m also a big believer in not doing boring work twice. So I started looking for ways to automate test generation.
What I tried first (and why it sucked)
My first instinct was to write a Python generator that parsed the function signatures and spat out basic asserts. Something like:
def generate_test(func_name, params):
