test-driven-development

Test-driven development is a process where you write failing tests first to drive correct implementation. The red-green-refactor cycle guides you to write a failing test, implement minimal code to pass it, then refactor while maintaining test coverage.

To start writing tests before code for new feature development, write a failing test that defines the desired behavior, then implement the smallest amount of production code to make it pass, ensuring early failure detection.

Yes, you can use test-driven development for bug fixes and refactoring across diverse codebases. It enforces a strict workflow with minimal production code and test-driven guardrails to prevent regressions and ensure correct behavior.

The best way to ensure software testing prevents regressions is adopting test-driven development. By enforcing minimal production code and early failure detection through the red-green-refactor cycle, it maintains reliable code behavior.

Writing minimal production code matters in test-driven development because it prevents over-engineering and ensures every line of code is directly driven by a failing test, maintaining strict quality assurance and early failure detection.