P
💻DeveloppementIntermediateAll AIs

Automatically Generate Unit Tests with AI

Automatically generate an exhaustive unit test suite covering nominal cases, edge cases, and error cases for any source code.

Paste in your AI

Adapt this prompt

Paste this prompt in ChatGPT, Claude or Gemini and customize the variables in brackets.

Tu es un ingénieur QA senior spécialisé en tests automatisés. Génère une suite complète de tests unitaires pour le code suivant écrit en [LANGAGE_DE_PROGRAMMATION] :

[CODE_SOURCE]

Contexte du projet : [DESCRIPTION_DU_PROJET]
Framework de test à utiliser : [FRAMEWORK_DE_TEST]

Pour chaque fonction ou méthode présente dans le code, génère des tests couvrant :

  1. Cas nominaux : comportement attendu avec des entrées valides typiques
  2. Cas limites : valeurs aux frontières (zéro, chaîne vide, liste vide, valeurs maximales)
  3. Cas d'erreur : entrées invalides, null/undefined, types incorrects, exceptions attendues
  4. Cas de régression : scénarios susceptibles de casser lors de refactoring

Pour chaque test :

  • Utilise la convention de nommage : test_<methode>_<scenario>_<resultat_attendu>
  • Applique le pattern AAA (Arrange, Act, Assert) avec des commentaires séparant chaque section
  • Ajoute des messages d'assertion explicites décrivant l'échec
  • Utilise des fixtures ou des mocks si des dépendances externes sont impliquées

Après les tests, fournis :

  • Un tableau récapitulatif du taux de couverture estimé par fonction
  • Les cas non testables automatiquement (nécessitant des tests d'intégration)
  • Des suggestions pour améliorer la testabilité du code source si nécessaire

Personalize this prompt with Léa

Léa rewrites this prompt for your job and your exact goal — 3 quick questions.

Why this prompt works

<p>This prompt transforms AI into an expert QA engineer to produce professional-quality unit tests. By providing your source code and desired test framework, you get a complete suite covering essential scenarios: normal operation, boundary values, and error handling.</p><p>For optimal results, <strong>paste the actual code</strong> rather than a description. Specify the test framework (<strong>pytest</strong>, <strong>Jest</strong>, <strong>JUnit</strong>, <strong>PHPUnit</strong>, etc.) to get directly usable syntax. The AAA pattern (Arrange, Act, Assert) structures each test in a readable and maintainable way.</p><p>Adapt the prompt to your needs: add minimum coverage constraints, request <strong>mocks</strong> for API or database calls, or specify your naming conventions. The final coverage table helps identify uncovered areas and prioritize complementary integration tests.</p>

Use Cases

Quickly generate tests for legacy code without existing coverageCreate a test suite before a major refactoring to prevent regressionsComplete test coverage on critical functions identified by an auditTrain junior developers in testing best practices by showing concrete examples

Expected Output

A complete ready-to-use unit test suite in the specified framework, with explicit naming, AAA pattern, coverage of nominal, edge, and error cases, accompanied by an estimated coverage table and improvement recommendations.

Improve this prompt

Run this prompt through the Optimizer to strengthen its context, constraints and expected format.

Improve this prompt with the Optimizer

Comments

  • LéaAI

    Pour des tests plus pertinents, ajoutez dans le prompt 2-3 exemples concrets d'entrées avec valeurs attendues explicites. L'IA produira des assertions précises plutôt que génériques. Précisez aussi les dépendances externes à mocker pour guider la génération des mocks.

📬 Get new prompts every week

Join our newsletter and never miss a prompt.

Go further

Similar Prompts

💻DeveloppementIntermediateAll AIs

Midjourney Prompt for Code Refactoring

Midjourney, renowned for its powerful image generation, finds an unexpected yet valuable application in code refactoring. By visualizing software architectures, flow diagrams, and abstract representations of data structures, Midjourney allows developers to conceptualize their refactoring before touching a single line of code. This visual approach helps identify complex dependencies, excessive coupling, and simplification opportunities that often remain invisible in a text editor. By generating clear architectural schemas, module maps, and before/after visualizations, technical teams can communicate more effectively about planned structural changes. Whether you are refactoring a monolith into microservices, reorganizing abstraction layers, or simplifying a legacy codebase, Midjourney transforms abstract concepts into concrete visual representations. This methodology is part of a growing trend of using visual tools to improve code quality and facilitate architectural decision-making within development teams.

454
💻DeveloppementAdvancedAll AIs

Implement pod security

Enforce Kubernetes pod security

462
💻DeveloppementIntermediateAll AIs

Configuration Management with GitOps

Implementing GitOps for configuration management

469
💻DeveloppementIntermediateAll AIs

Write SLOs and SLIs

Define service reliability targets

450