test-driven-development

The Test-Driven Development (TDD) process follows a strict Red-Green-Refactor cycle. You write a failing test first, implement the minimal code required to make it pass, and then refactor the code to improve quality and maintainability.

To begin the Red-Green-Refactor cycle, write a failing test for your new feature before writing any implementation code. Once the test fails as expected, write the minimal code to turn it green, then refactor safely.

Writing a failing test before implementation code ensures your tests actually validate the feature and prevents regressions. It enforces rigorous TDD methodology, guiding you to design testable, reliable software from the start.

Yes, Test-Driven Development fits agile software development by supporting iterative refactoring and high code quality. It ensures every new feature is protected by tests, preventing regressions throughout the development lifecycle.

TDD is applicable to all software development tasks requiring high reliability and maintainability. It is particularly effective when you need to prevent regressions and enforce testable code design across your project.