Commit to one useful node:test
Create a concrete plan to add one behavior-focused Node.js built-in test and run it through npm.
Add one behavior-focused node:test case to a real Node.js helper, parser, validator, or route utility Use this for a function with a clear input/output or input/error contract: config parsing, HTTP status mapping, JSON loading, discount math, or request validation. A config helper should reject a missing required environment variable with a clear error. A request validator should return a 400 problem object when email is empty. A pricing or formatting helper should produce an exact output for a bug that was recently fixed. I will test [function] with [specific input] and assert [specific output or error]. I will run it…
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