Write a Test Skill in 30 Minutes: Turning Wishful Prompts into SOPs That AI Will Follow

Using test case generation as an example, the article explains how to rewrite wishful prompts like "please help me generate test cases" into a SKILL.md that Claude Code can follow. The author provides a four-step skeleton: understand the requirements; identify four types of scenarios—normal flows and exception scenarios, boundary conditions, and permission checks; generate test cases according to fixed fields; and check against a self-review checklist. The article also explains that description should clearly state the trigger words, and when_to_use should indicate applicable and non-applicable scenarios. The comparison in the article shows that before the rewrite, AI output only three plain-text test cases; after the rewrite, it output twelve table-form test cases covering scenarios such as unauthorized access, and the author recommends running through manually written test cases to verify format and coverage.