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Edge-case hunt

Find the tests you forgot to write.

Review Find edge cases Common workflows testing edge-cases coverage Any Claude

Official basis Ask Claude to identify edge cases you might have missed. docs ↗

The prompt 
Analyze these code paths and list the tests I'm missing — error conditions, boundary values, and unexpected inputs I haven't covered. Don't write them yet, just enumerate the gaps.

Why it works

You’re blind to the cases you didn’t think of — that’s exactly where bugs hide. The docs recommend using Claude to surface missing edge cases; listing before writing lets you prioritize.

Fill in

  • Point at the function(s) or paste the code paths.

Follow-ups

  • “Write tests for the top 3, and confirm which ones currently fail.”

More review prompts

Diff review A focused correctness pass on the change you just made. Explain-back Understand unfamiliar code and catch surprises in it. Fresh-context adversarial review An unbiased review that won't rubber-stamp your own code.
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