tdd

Test-driven development is a software quality practice where you write a failing test before implementing code. You follow the red-green-refactor cycle: write a failing test, implement minimal code to pass, then refactor while keeping tests green.

To enforce test-first development, you structure your workflow with clear rules: always write a failing test before implementing a feature, write just enough code to pass the test, and refactor with tests remaining green to ensure code discipline.

You do not need external services or installations to practice TDD beyond standard testing frameworks. It applies across development cycles and is suitable for individual projects and team workflows without additional infrastructure.

The best way to start a new feature using test-driven development is to write a failing test that defines the expected behavior, implement minimal code to make the test pass, and then refactor the code while keeping the tests green.

TDD is suitable for both individual projects and team workflows. It guides teams to write failing tests before implementing code and applies across development cycles to enforce disciplined iterative development.

Writing a failing test before implementing code in test-driven development prevents untested features from entering production. It ensures every feature starts with a failing test, verifying software quality through the red-green-refactor cycle.