Write Better Tests With TDD
summary
Defines TDD as the three-rule red fail write minimal code pass then refactor cycle and demonstrates it with a toy increment example, a cautionary even/odd vs Tuesday bug that shows tests can lie, and a real date gap analysis where a robust test suite catches unsorted input and one-day-gap cases. Reports higher confidence and cleaner code, recommends applying TDD selectively (about 50% of the time) when branching or complex date math demands it.
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