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Untangle a Function Whose Tests Pass But Behavior Is Wrong

Coding Debugging Advanced 🤖 ChatGPT 👁 5 views

📝 The Prompt

I have a function where the tests pass but production reports it's behaving wrong in some specific case. Function: [paste function]. Tests: [paste tests]. Reported bad behavior: [describe what's happening in prod that's wrong]. Walk me through: (1) what the test suite is *not* covering — be specific about the gap, (2) whether the issue is more likely a bug in the function or a wrong mental model on the caller's side, (3) the smallest failing test I could write right now to reproduce the prod behavior, (4) what fix is suggested by that test, (5) what other places in the codebase probably have the same shape of bug. Don't refactor for style — focus on the correctness gap.

⚙️ Replace 3 placeholders: [paste function] [paste tests] [describe what's happening in prod that's wrong]

🎯 What this prompt does

This AI prompt helps you untangle a function whose tests pass but behavior is wrong. Designed for debugging workflows in the coding category, it's a advanced-level prompt you can copy directly into ChatGPT to get instant, production-ready results.

Use it when you need a advanced prompt that produces clear, actionable output without wrestling with trial-and-error wording. Just copy, customize, and run.

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🚀 How to use this prompt

  1. Copy the prompt using the 📋 button above.
  2. Open ChatGPT (or Claude, Gemini, Perplexity, or your preferred LLM).
  3. Paste the prompt into a new chat. Replace 3 bracketed placeholders ([paste function] [paste tests] [describe what's happening in prod that's wrong] ) with your own details.
  4. Run the prompt and review the AI's response. Most outputs are usable immediately.
  5. Iterate if needed — if the tone, length, or structure isn't quite right, reply with "make it shorter", "use bullet points", or "make it more formal" and the AI will refine it.

💡 Tips for better results

  • Replace the bracketed placeholders ([paste function], [paste tests], [describe what's happening in prod that's wrong]) with your own specifics before sending.
  • If the first output isn't quite right, ask the AI to refine, rewrite, or add more detail — iteration is key.
  • For long outputs, ask for a section at a time (e.g. 'start with the introduction only') to keep quality high.
  • Combine this with other coding prompts to build an end-to-end workflow.
  • Save your favorite variations — small wording tweaks often produce noticeably different results.
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✨ What you'll get

When you run this prompt, expect ChatGPT to return:

  • A directly usable debugging output tailored to the details you provided
  • Clear structure (headings, bullets, or numbered sections) that you can drop into your workflow
  • Content that matches your specified tone and context
  • Results in under 30 seconds — no manual drafting required

Need a different angle? Just ask follow-up questions. The AI will adjust without you starting over.

🔄 3 variations to try

1

Make it more formal

Add "Use a formal, professional tone suitable for enterprise clients" at the start of the prompt.

2

Ask for multiple options

Append "Give me 5 alternative versions, each with a different angle or approach." after the main instruction.

3

Request structured output

Add "Return the response as a markdown table (or bullet list, or JSON)" so you can paste the result directly into your docs or code.

🏷 Tags

🔎 Find more prompts like this

Browse 233 more coding prompts or search the full library.

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