superpowers-test-driven-development

Test-driven development is a workflow where you write a failing test first, implement the minimal code to make it pass, and then refactor. The red-green-refactor cycle enforces this sequence to catch regressions early and maintain clear test names.

To apply test-driven development to bug fixes and refactors, write a failing test that captures the desired behavior change first. Implement the smallest production code to pass the test, then refactor for clarity while ensuring all tests stay green.

Yes, test-driven development is suitable for new features, bug fixes, refactors, and behavioral changes across software projects. It enforces clear test names, minimal implementations, and automated verification of tests during development regardless of project scope.

The best way to start TDD is to write a failing test that captures the desired behavior, run the tests to see the failure, implement the smallest production code to pass, and then refactor while all tests stay green to establish a disciplined workflow.

Test-driven development requires minimal implementations to ensure tests describe expected behavior with small, focused scopes. Writing only enough production code to satisfy tests prevents over-engineering and maintains fearless regression catching across software projects.

Test-driven development is broadly applicable to features, bug fixes, refactors, and behavioral changes across software projects. However, it may not suit exploratory spikes where immediate behavior validation is unnecessary and writing failing tests first provides no regression value.