FA-12493 / Biological sequence representation / Member archive
Case normalization destroys soft-mask positions · case 03
Case normalization destroys soft-mask positions.
Case contract
Return zero-based indices of lowercase a,c,g,t only; lowercase n is unknown, not a masked canonical base.
Why this case matters
An offline abstract sequence-data model; useful for testing representation invariants without biological inference.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| variable prefix | [] | [3, 4] | Failed |
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