What is Test-Driven Development (TDD)?

Test-Driven Development (TDD) is a software development approach where tests are written before implementing features. This ensures code meets requirements and remains maintainable.

Test Driven Development

Why Use TDD?

  • 🚧 Early Feedback: Identify bugs during development
  • 🔄 Refactoring Confidence: Safeguard code integrity
  • 📊 Improved Design: Forces modular architecture
  • 📚 Read more about TDD principles

TDD Workflow

  1. 📝 Write a failing test case
  2. ✅ Implement code to pass the test
  3. 🧹 Refactor code while maintaining test passes
TDD Cycle

Tools & Frameworks

Popular TDD tools include:

  • 🧪 JUnit (Java)
  • 🧪 pytest (Python)
  • 🧪 Mocha (JavaScript)
  • 🧪 NUnit (.NET)
    For code structure examples, check our Testing Patterns guide.

Best Practices

  • 📌 Write tests for edge cases
  • 📌 Keep tests isolated and focused
  • 📌 Use descriptive test names
  • 📌 Monitor code coverage metrics

Resources

Stay curious! 🚀

Unit Testing