Quick Definition:
Unit Testing is the practice of testing individual units or components of software to ensure they work as expected. Test-Driven Development (TDD) is a software development process where you write the tests before you write the code.
Benefits for PMs
- Higher Quality: TDD leads to fewer bugs and a more robust product.
- Faster Feedback: Automated tests provide immediate feedback to developers, reducing the cost of fixing errors.
- Improved Documentation: Tests serve as a form of living documentation for how the code is supposed to work.
- Easier Refactoring: A comprehensive test suite gives developers the confidence to refactor code without breaking it.
The TDD Cycle
TDD follows a simple cycle: Red (write a failing test), Green (write the minimum code to pass the test), Refactor (improve the code while keeping the test passing).
