Test-First Turns Vibes Into Constraints
Translate a fuzzy coding request into a failing test that drives a smaller, cleaner implementation.
The first draft should be a test when the behavior is disputed. That is how you turn “it feels broken” into something the machine can actually drive toward. Developers often treat tests as cleanup after an AI coding session. In test-first work, the test is the brief. It tells the model which behavior matters, what edge case is real, and when to stop changing things. Why test-first improves AI coding A test creates a narrow success condition. The model no longer needs to infer whether the issue is timing, permissions, formatting, or state handling. Because the test focuses on interface…
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