FA-21083 / Assistive announcements / Member archive

Clear speech history also erases delivered-output record · case 03

The announcement trace violates the stated speech-history contract.

Member previewVariant 3 · 3 implementations · 8 checks per implementation

Case contract

History retains the last three delivered utterances [id,text], newest last. Deliver same ID replaces its prior record and moves it newest. Replay speaks selected history text without adding history. Previous walks a separate cursor newest to oldest and clamps at oldest. Deliver resets cursor to newest. Forget deletes one ID and resets cursor. Clear removes history without changing spoken output. Limit clamps to at least one and trims oldest. Report spoken and history.

Why this case matters

Deterministic controlled model of assistive announcement delivery.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
trace-6	`[[], [], 0]`	`[["alphaalphaalpha"], [], 0]`	Failed

MEMBER ARCHIVE

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