6.2. Supporting Testing and Security
💡 First Principle: Copilot lowers the activation energy for testing and security work — the parts developers most often skip under time pressure — by drafting tests, surfacing edge cases, and suggesting fixes. But because its output is fallible, it assists these disciplines rather than guaranteeing them.
Why this matters: this subgroup is rich in scenarios — "generate tests," "find edge cases," "suggest security improvements" — and each carries a built-in caution. The exam rewards knowing both the help and its limits.
The mental model: a diligent assistant who'll happily draft the tests you've been putting off and point out risks you might miss — but whose work you still review, because they can be confidently wrong.
⚠️ Common Misconception: "Copilot-generated tests guarantee good coverage." Copilot scaffolds tests fast, but it can miss edge cases and assertions. The developer must direct it toward boundary conditions and verify coverage.
