tdd-workflow

You enforce test-driven development by applying a structured workflow that requires writing tests first for new features, bug fixes, and refactors, then implementing code to pass them. This prevents feature creep and ensures reliable functionality.

The minimum test coverage required for test-driven development is 80% across unit, integration, and end-to-end tests. Meeting this explicit coverage target promotes robust software quality and reduces regression risk in production.

To write unit tests first, follow a repeatable workflow: define user journeys, write unit tests, run the test suite, implement the code to pass tests, and verify overall coverage. This structured approach reduces regression risk in production.

Test-driven development works for bug fixes and refactoring by mandating a tests-first approach. It provides clear guidance and checks to ensure changes are reliable, well-tested, and do not introduce brittle code or feature creep.

You should use a structured workflow for integration and e2e testing because it provides a repeatable process from writing user journeys to validating changes. This prevents brittle code, mandates explicit coverage targets, and reduces production regression risk.