practicing-test-driven-development

Test-driven development improves code quality by enforcing test design rules, requiring tests before production code, and mapping cycles to granular commits for better version control.

You can refactor legacy code using test-driven development by applying the inside-out approach, starting with robust value types and growing outward while writing tests before modifying production code.

Best test design rules for object-oriented programming include following blackbox testing, preferring fakes over mocks, and using clear test names to ensure maintainable test-driven development.

Yes, you can use test-driven development for object-oriented codebases by starting with value types, strictly adhering to the red-green-refactor cycle, and maintaining commit discipline for version control.

You should not use mocks in test-driven development when fakes can be used instead, as preferring fakes over mocks is a core test design rule to maintain clarity and reduce coupling.