Pro-Tip (TDD): Focus on Our Branching Logic

TDD Pro-Tip: What we TDD most rigorously and faithfully is our branching logic. This is the insight one needs to start gaining TDD’s massive productivity benefit. All three terms are important, "our", "branching", and "logic", so let’s take them one at a time. Remember as we forge in to this: there is no free lunch, but if there were a free lunch, writing a test ain’t it. Every test we write costs something and benefits something. We need that benefit …

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