How can test-driven development act as guardrails when you delegate coding to an AI agent?

beginner

Re-explain

Test-driven development gives an agent an executable contract and a short feedback loop, making delegated work narrower and easier to inspect.

Review a test that expresses one required behavior and confirm it fails for the right reason.
Ask for the smallest implementation that makes the test pass.
Protect tests from unapproved edits so the agent cannot weaken the contract.
Add boundaries, invalid inputs, and failure paths, then rerun focused checks.
Inspect the implementation and repeat with the next behavior.

A green suite proves only the specified cases, so human review and broader verification still matter.

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