Code & Développement#unit tests#testing#TDD#developer#chatgpt

Unit Test Suite Generator Prompt

Generate comprehensive unit tests covering happy path, edge cases, and errors.

Fonctionne avec :ChatGPTClaudeGeminiMicrosoft Copilot
Prompt complet
Write unit tests for the following function using [pytest / Jest / JUnit / etc.].
```[language]
[paste function]
```
Cover:
1. Happy path with typical inputs
2. Edge cases: empty input, null/undefined, boundary values
3. Error cases: invalid types, missing fields, out-of-range values
4. Any side effects (mock external API/database calls)
Use descriptive test names in the format "it should [expected behavior] when [condition]". Aim for >90% branch coverage. Include setup/teardown if needed.
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How to use this prompt

Paste the smallest relevant code block. Review, test, and lint any generated code before merging; models can hallucinate APIs.

  1. Copy the full prompt above.
  2. Replace the bracketed placeholders with your own details.
  3. Paste it into chatgpt, claude, gemini (or your preferred AI tool).
  4. Iterate on the output: add constraints, ask follow-ups, or combine multiple results.

Why this prompt works

It gives the AI a clear role, specific inputs, and an output format. That structure reduces vague responses and gives you a draft you can refine in minutes instead of hours.

Foire aux questions

Should I mock all external dependencies?

Mock dependencies outside the unit under test, but avoid over-mocking internal logic.

How much coverage is enough?

Coverage is a guide, not a goal. Focus on meaningful assertions for all paths.

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