test-driven-development

Test-driven development (TDD) is a software development methodology that mandates writing failing tests before implementation. By following the strict Red-Green-Refactor cycle, it prevents regressions and ensures code quality by catching errors early before any actual feature code is written.

To implement a feature using the Red-Green-Refactor cycle, first write a failing test that defines the desired behavior (Red). Next, write the minimum code required to make that test pass (Green). Finally, clean up and optimize the code without changing its behavior (Refactor).

You should use TDD for bug fixes and refactoring tasks whenever you need to prevent regressions and ensure robust software. It requires writing a failing test that reproduces the specific bug before applying the fix, verifying the correction and safeguarding existing functionality.

Yes, test-driven development integrates seamlessly into agile software development workflows. It enforces strict testing protocols and verification steps during rapid iterations, ensuring high code quality and preventing regressions when developing new features or applying fixes.

Strictly enforcing TDD principles requires adherence to rigorous testing protocols and verification steps, which can initially slow down feature delivery. It mandates writing failing tests before any implementation, demanding high discipline and potentially impacting rapid prototyping speed.

TDD principles are applicable to all new feature development, bug fixes, and refactoring tasks. The methodology mandates failing tests before implementation across these scenarios to ensure code quality, catch errors early, and prevent software regressions effectively.