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Tuple schema accepts an extra positional item · case 05

Tuple schema accepts an extra positional item.

Member previewVariant 5 · 3 implementations · 6 checks per implementation

Case contract

Tuple validation requires array length equal to schema count and validates each aligned item.

Why this case matters

Tool argument validation prevents malformed structured payloads from entering a deterministic downstream operation.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixtureActualExpectedOutcome
extra itemtruefalseFailed

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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

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