FA-11095 / Media playlist state / Member archive

Playlist deduplicate entry not track · case 05

Track-level deduplication collapses independently queued occurrences.

Member previewVariant 5 · 3 implementations · 4 checks per implementation

Case contract

Return the first occurrence of each unique entry ID in original first-occurrence order; track IDs may repeat and later duplicate-entry payloads are ignored.

Why this case matters

A deterministic local media controller stage; metadata and downloaded data are supplied explicitly. No external player, service or codec is required.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
fixture 1	`[["a", "first"], ["c", "same"], ["a", "later"]]`	`[["a", "first"], ["b", "same"], ["c", "same"]]`	Failed

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