test-driven-development

Test-driven development improves code quality by enforcing a test-first principle, ensuring all functionality is verified before implementation to reduce bugs, prevent regressions, and build reliable software.

To start writing tests first, identify your feature requirements and write a failing test for a specific scenario, then implement the minimal production code required to make that test pass before moving on to the next test case.

You should use test-driven development for bug fixes and refactoring to create a safety net of tests that verify existing functionality, ensuring your code changes prevent regressions and maintain robust software behavior.

Test-driven development works effectively within agile software development workflows by structuring feature implementation into incremental, verifiable steps that ensure continuous code quality and reliable testing throughout the iteration.

Enforcing a test-first development approach requires strict adherence to the Red-Green-Refactor cycle, which may slow down initial feature implementation and requires writing comprehensive test scenarios before any production code is established.