test-driven-development

The red green refactor cycle in test-driven development is a workflow of writing a failing test, implementing minimal code to pass it, and safely improving the design. This enforces test-first implementation to validate behavior before production changes.

To prevent mock misuse when writing unit tests, apply test quality enforcement to avoid incomplete coverage and anti-patterns. Dependency-aware mocking decisions ensure you validate behavior correctly without test-only production code.

To write failing tests first for a new feature, follow a disciplined test-first workflow by defining the intended behavior before production code is written. Implement minimal solutions to pass the tests and safely refactor.

Automated verification for a bug fix is needed when changing existing software behavior. Applying test-driven development ensures every behavior change is protected by a verified regression test to prevent unreliable implementations.

Test-driven development works for refactoring by applying test-first implementation practices to behavior changes. It validates intended behavior before modifying production code, ensuring software reliability during structural improvements.

Limitations of test-first implementation involve the overhead of maintaining strict red green refactor discipline and dependency-aware mocking. It requires careful validation of test quality to avoid incomplete coverage and test-only production code.