test-driven-development

Test-driven development prevents regressions by enforcing a test-first workflow where you write failing tests before production code. This makes behavior explicit and ensures all features are validated through automated tests before implementation.

To start the red-green-refactor cycle, write a failing test for the desired behavior, then implement only enough production code to make the test pass, and finally refactor the code while keeping the tests green.

Yes, test-first development is applicable to bug fixes and refactoring across software projects. You write failing tests that capture the expected behavior, then adjust the production code to pass those tests.

Test-driven development solves unclear requirements by forcing you to write tests that explicitly define desired behavior before writing code. This translates vague requirements into repeatable, automated validations.

Writing failing tests before production code guides your software design and prevents regressions. It enforces a repeatable process where every behavior change is validated, ensuring code quality and explicit documentation.

The test-first workflow requires writing failing tests before any production code for behavior changes. This strict process can slow down initial development speed but ensures regression safety and explicit behavior validation across the software project.