You have a function, you need tests, and you're staring at a blank file. AI can generate a solid first draft of your unit test suite in under a minute — but only if you prompt it correctly. This walkthrough shows you exactly how to do it, step by step, with copy-paste prompts and real output patterns you can adapt immediately.
Why the Naive Prompt Fails
Most engineers start with something like "write tests for this function" and paste their code. The output is usually technically correct but shallow: happy-path only, no edge cases, no error conditions, no boundary values. It looks like coverage but isn't.
The fix isn't a fancier AI model — it's a better prompt structure.
Step 1: Frame the Function with Context
