test-driven-development

Test-driven development improves reliability by enforcing a test-first cycle where you write failing tests before implementation, reducing regressions and guiding code design. It ensures code correctness through minimal implementation to pass tests and a subsequent refactor step.

The red-green-refactor cycle in TDD is a workflow that guides developers from writing a failing test, implementing minimal code to make it pass, to refactoring for clarity. This enforces test-first discipline across new features, bug fixes, and refactors.

To start writing tests before code, write a failing test for a simple feature, then implement the minimal code required to pass the test, and finally refactor the code for clarity. This provides repeatable guardrails to accelerate onboarding and consistent practices.

Yes, you can use this TDD workflow for bug fixes and refactoring. It enforces test-first discipline across all software project tasks, ensuring that you write at least one failing test before implementing minimal code to pass and refactoring.

The limitations of enforcing test-first development include the strict requirement to write at least one failing test before any code. This discipline may slow down initial feature work but reduces regressions and improves overall code design and reliability.