Skills Library / Test Case Writer / for ChatGPT

Test Case Writer — for ChatGPT

This is the ChatGPT version of the Test Case Writer skill: produce a test plan for a feature: happy paths, edges, and failure modes as a checklist. ChatGPT has no triggering skill files, so the skill is converted into a standing instruction set: paste it into a custom GPT's instructions, or into a Project's instructions, and it governs every chat there.

The file

✎ Editable — click in, customize or extend this prompt, then copy. Your edits copy with it.Take this prompt into the Generator and customize it to your own specification →

Download gpt-instructions.txt

Install

Create a custom GPT (or open a Project) for this job
Paste the file into the Instructions field, complete
Test with a real task and one edge case; tighten any line that was ignored

Other platforms

Claude version Gemini version Microsoft Copilot version Qwen & Kimi version Local Models version

Canonical version and the skill's full description: Test Case Writer. The underlying procedure is identical on every platform - only the packaging differs, because each model takes its skills its own way.

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